A viscosity testing apparatus for printing inks

Abstract

The application relates to the technical field of tackiness testing, in particular to a printing ink tackiness testing device which comprises a detection box body, a metal ink-distributing roller, a rubber testing roller, an ink returning pipeline, an ink applying assembly and a balanced ink sticking assembly. The printing ink tackiness testing device of the application adjusts the coating position by cooperation of a metal telescopic pipe and a blanking pipe, ensures that the ink uniformly covers the metal ink-distributing roller, circulates the ink by a built-in ink guiding slope, reduces ink waste, maintains constant ink amount, avoids test deviation caused by ink sedimentation. In addition, the fine grinding turntable cooperates with the embedded groove to ensure the accurate moving track of the rubber testing roller, avoids deflection, the torque sensor monitors and dynamically feeds back the separation resistance in real time, improves the data accuracy, the pneumatic cylinder drives the push sleeve rod and provides constant pressure, reduces mechanical vibration interference, so that the separation process of the device is closer to the real printing condition, and the data has higher reference value.

Description

Technical Field

[0001] This application relates to the field of viscosity testing technology, and in particular to a viscosity testing device for printing ink. Background Technology

[0002] Ink viscosity refers to the magnitude of the cohesive force within the ink, i.e., the crack resistance of the ink film. Ink viscosity is an important indicator of ink performance and a crucial factor in determining ink transfer performance, print fastness, penetration, and gloss. Therefore, viscosity testing is required after ink production.

[0003] A search revealed that publication number CN217332063U discloses a novel ink viscosity testing device. A guide rod is fixedly connected to one side of a support frame, and a lead screw is mounted on one side of the guide rod. The two ends of the lead screw are movably connected to the inside of the support frame. A through hole is opened on one side of the fixed seat, and a threaded hole is opened on the other side. In use, rotating the handle drives the lead screw to rotate, which in turn drives the fixed seat to rise and fall smoothly under the guidance of the guide rod. This, in turn, causes the main body of the digital viscometer to rise and fall smoothly, facilitating precise adjustment of the rotor's insertion height into the ink. A container filled with ink is placed inside the container slot, and then a knob is rotated. The knob rotates the screw, which pushes a pusher block to slide inside the telescopic groove, thus clamping and limiting the container.

[0004] Regarding the aforementioned technologies, the inventors believe that the following technical defects exist that need to be improved: When the above-mentioned device is in use, due to the rheological properties of ink, the ink film on the rollers or rotors that are sticky with ink becomes uneven; and the pressure adjustment relies heavily on springs or counterweights, which are easily affected by vibration, resulting in pressure fluctuations, which in turn makes the sticky parts between the rollers more secure, thereby reducing the separation resistance and causing test distortion. Utility Model Content

[0005] This application provides a printing ink viscosity testing device to improve the following technical problems: When the above-mentioned device is used, due to the rheological properties of ink, the ink film on the roller or rotor that sticks to the ink is uneven; and the pressure adjustment relies heavily on springs or counterweights, which are easily affected by vibration, resulting in pressure fluctuations, which in turn makes the sticky part between the rollers more secure, thereby reducing the separation resistance and causing test distortion.

[0006] This application provides a device for testing the viscosity of printing ink, which adopts the following technical solution:

[0007] A printing ink viscosity testing device includes a testing chamber, a metal ink distribution roller, a rubber test roller, an ink return pipe, an ink coating assembly, and an ink balancing assembly. The metal ink distribution roller is rotatably connected inside the testing chamber, the rubber test roller is movably connected to the side of the testing chamber near the metal ink distribution roller, the ink return pipe is installed on one side of the testing chamber, the ink coating assembly is installed on the outside of the ink return pipe, and the ink balancing assembly is installed on both sides of the rubber test roller.

[0008] The detection chamber is used to provide a circulating ink coating environment and cooperate with the ink balancing component to detect ink viscosity. The metal ink roller, in conjunction with the ink coating component, is used to uniformly coat the outer wall of the metal ink roller with ink. The ink return pipe, in conjunction with the ink coating component, is used for circulating ink coating. The ink balancing component is used to push the rubber test roller and adhere the ink located on the metal ink roller and stabilize its separation.

[0009] In one feasible technical solution of this application, the balanced ink adhesion assembly includes a positioning frame, a fine grinding turntable, a connecting rod, a torque sensor, a pushing cylinder, and a pushing sleeve. The positioning frame is fixedly connected inside the detection chamber. The fine grinding turntable is embedded inside the positioning frame and slidably connected to the inner surface of the positioning frame. The torque sensor is sleeved on the outside of the connecting rod. The two ends of the connecting rod are fixedly connected to the opposite side surfaces of the fine grinding turntable and the rubber test roller, respectively. The pushing cylinder is installed on the outside of the detection chamber. One end of the pushing sleeve is installed outside the output end of the pushing cylinder, and the other end of the pushing sleeve is sleeved on the outside of the connecting rod.

[0010] In one feasible technical solution of this application, the ink coating assembly includes a metal telescopic tube, a feeding tube, a sleeve, a hydraulic cylinder, and a connecting bracket. The metal telescopic tube is snapped onto the top outside of the ink return pipe, the feeding tube is snapped onto the outside of the metal telescopic tube, the sleeve is sleeved on the outside of the feeding tube, the hydraulic cylinder is installed on the top of the detection box, and the connecting bracket is fixedly connected to the outside of the output end of the hydraulic cylinder, and the outside of the connecting bracket is fixedly connected to the outer surface of the sleeve.

[0011] In one feasible technical solution of this application, the positioning frame is further provided with an embedding groove that matches the size of the fine grinding turntable.

[0012] In one feasible technical solution of this application, a DC motor is also provided on the outside of the detection box, and the output end of the DC motor is fixedly connected to one end of the metal ink roller.

[0013] In one feasible technical solution of this application, an ink pump for circulating material is also provided on the outside of the ink return pipe.

[0014] In one feasible technical solution of this application, the bottom inner side of the detection box is provided with an ink guide ramp with an inclined structure.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] This device uses a metal telescopic tube in conjunction with a feeding tube to adjust the coating position, ensuring that the ink evenly covers the metal ink distribution roller. The ink return pipe circulates ink through a built-in ink guide ramp, reducing ink waste and maintaining a constant ink volume to avoid test deviations caused by ink settling. In addition, the precision grinding turntable and embedded groove ensure the accurate movement trajectory of the rubber test roller, preventing skewness. A torque sensor monitors and dynamically feeds back the separation resistance in real time, improving data accuracy. A cylinder drives the push rod and provides constant pressure, reducing mechanical vibration interference. This makes the separation process of this device closer to real printing conditions, and the data is more valuable. Furthermore, the precision grinding turntable is slidably connected to the positioning frame, reducing frictional resistance during the pushing process and improving the smoothness of movement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the printing ink viscosity testing device according to an embodiment of this application.

[0019] Figure 2 This is a cross-sectional view of the detection box in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the structure of the balanced ink adhesion group in the embodiments of this application.

[0021] Figure 4 This is a disassembled diagram of the push sleeve and connecting rod in the embodiments of this application.

[0022] Figure 5 This is a schematic diagram of the ink guide ramp in the embodiment of this application.

[0023] Figure 6 yes Figure 1 Enlarged view of part A in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Testing chamber; 2. Metal ink distribution roller; 3. Rubber test roller; 4. Ink return pipe;

[0026] 5. Ink coating assembly; 51. Metal telescopic tube; 52. Feed tube; 53. Sleeve disc; 54. Hydraulic cylinder; 55. Connecting bracket;

[0027] 6. Balance ink adhesion assembly; 61. Positioning frame; 62. Precision grinding turntable; 63. Connecting rod; 64. Torque sensor; 65. Push cylinder; 66. Push sleeve rod;

[0028] 7. Embedded slot; 8. DC motor; 9. Ink pump; 10. Ink guide ramp. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] This application discloses an apparatus for testing the viscosity of printing ink. (Refer to...) Figures 1 to 6The printing ink viscosity testing equipment includes a test chamber 1, a metal ink distribution roller 2, a rubber test roller 3, an ink return pipe 4, an ink coating assembly 5, and an ink balancing assembly 6. The metal ink distribution roller 2 is rotatably connected inside the test chamber 1, the rubber test roller 3 is movably connected to the side of the test chamber 1 near the metal ink distribution roller 2, the ink return pipe 4 is installed on one side of the test chamber 1, the ink coating assembly 5 is installed on the outside of the ink return pipe 4, and the ink balancing assembly 6 is installed on both sides of the rubber test roller 3.

[0035] The test chamber 1 is used to provide a circulating ink coating environment and cooperate with the ink balancing component 6 to test the ink viscosity. The metal ink roller 2, in conjunction with the ink coating component 5, is used to uniformly coat the outer wall of the metal ink roller 2 with ink. The ink return pipe 4, in conjunction with the ink coating component 5, is used for circulating ink coating. The ink balancing component 6 is used to push the rubber test roller 3 and adhere the ink located on the metal ink roller 2 and stabilize its separation.

[0036] The ink-adhesion balancing assembly 6 includes a positioning frame 61, a fine grinding turntable 62, a connecting rod 63, a torque sensor 64, a push cylinder 65, and a push sleeve 66. The positioning frame 61 is fixedly connected inside the detection chamber 1. The fine grinding turntable 62 is embedded inside the positioning frame 61 and slidably connected to the inner surface of the positioning frame 61. The torque sensor 64 is sleeved on the outside of the connecting rod 63. The two ends of the connecting rod 63 are fixedly connected to the opposite side surfaces of the fine grinding turntable 62 and the rubber test roller 3, respectively. The push cylinder 65 is installed on the outside of the detection chamber 1. One end of the push sleeve 66 is installed on the outside of the output end of the push cylinder 65, and the other end of the push sleeve 66 is sleeved on the outside of the connecting rod 63.

[0037] The ink coating assembly 5 includes a metal telescopic tube 51, a feeding tube 52, a sleeve 53, a hydraulic cylinder 54, and a connecting bracket 55. The metal telescopic tube 51 is snapped onto the top outside of the ink return pipe 4, the feeding tube 52 is snapped onto the outside of the metal telescopic tube 51, the sleeve 53 is sleeved on the outside of the feeding tube 52, the hydraulic cylinder 54 is installed on the top of the detection box 1, and the connecting bracket 55 is fixedly connected to the outside of the output end of the hydraulic cylinder 54, and the outside of the connecting bracket 55 is fixedly connected to the outer surface of the sleeve 53.

[0038] The positioning frame 61 also has an insert groove 7 that matches the size of the fine grinding turntable 62.

[0039] A DC motor 8 is also installed on the outside of the detection box 1, and the output end of the DC motor 8 is fixedly connected to one end of the metal ink roller 2.

[0040] An ink pump 9 for circulating material is also installed on the outside of the ink return pipe 4.

[0041] The bottom inner side of the test chamber 1 has an ink guide ramp 10 with an inclined structure.

[0042] The usage process of the printing ink viscosity testing device in this application embodiment is roughly as follows:

[0043] The ink to be tested is injected into the return ink pipe 4, and the ink pump 9 is started to circulate the ink within the system. The height of the connecting bracket 55 is adjusted by the hydraulic cylinder 54, so that the sleeve 53 drives the feed pipe 52 to the predetermined position. The metal telescopic tube 51 adjusts its extension length according to the ink characteristics to ensure that it can be evenly coated with ink on the metal ink distribution roller 2. During the ink coating process, the DC motor 8 drives the metal ink distribution roller 2 to rotate, and the ink flows out evenly through the feed pipe 52, forming an initial ink film on the surface of the rotating metal ink distribution roller 2. Excess ink flows back to the return ink pipe 4 along the ink guide ramp 10, completing the recycling. During the test, the push cylinder 65 applies a preset pressure by pushing the sleeve rod 66, and the connecting rod 63 transmits the pressure to the rubber test roller 3, so that it forms a standard contact width with the metal ink distribution roller 2. The precision grinding disc 62 slides precisely in the embedded groove 7 of the positioning frame 61 to ensure the parallelism between the rollers. During this process, the torque sensor 64 monitors the force changes on the connecting rod 63 in real time. When the two rollers separate, the rubber test roller 3 maintains a stable trajectory movement via the precision grinding turntable 62, pushing the sleeve rod 66 to maintain a constant separation speed. The torque sensor 64 records the maximum separation resistance value. The system automatically records the rotational speed of the metal ink-spreading roller 2, the inter-roller pressure, and the peak separation resistance parameters output by the torque sensor 64, thereby completing the accurate testing of the printing ink.

[0044] The beneficial technical effects of the printing ink viscosity testing device according to the embodiments of this application are roughly as follows:

[0045] This device uses a metal telescopic tube 51 in conjunction with a feeding tube 52 to adjust the coating position, ensuring that the ink evenly covers the metal ink roller 2. The ink return pipe 4 circulates ink through the built-in ink guide ramp 10, reducing ink waste and maintaining a constant ink volume to avoid test deviations caused by ink settling. In addition, the fine grinding turntable 62, in conjunction with the embedded groove 7, ensures the accurate movement trajectory of the rubber test roller 3, avoiding skewness. The torque sensor 64 monitors and dynamically feeds back the separation resistance in real time, improving data accuracy. The push cylinder 65 drives the push sleeve 66 and provides constant pressure, reducing mechanical vibration interference. This makes the separation process of this device closer to real printing conditions, and the data more valuable for reference. Furthermore, the fine grinding turntable 62 is slidably connected to the positioning frame 61, which reduces frictional resistance during the pushing process and improves the smoothness of the movement.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for testing the viscosity of printing ink, characterized in that, The device includes a detection chamber (1), a metal ink-spreading roller (2), a rubber test roller (3), an ink return pipe (4), an ink coating assembly (5), and an ink balancing assembly (6). The metal ink-spreading roller (2) is rotatably connected inside the detection chamber (1). The rubber test roller (3) is movably connected to the side of the detection chamber (1) near the metal ink-spreading roller (2). The ink return pipe (4) is installed on one side of the detection chamber (1). The ink coating assembly (5) is installed on the outside of the ink return pipe (4). The ink balancing assembly (6) is installed on both sides of the rubber test roller (3). The detection chamber (1) is used to provide a circulating ink coating environment and cooperate with the ink balancing assembly (6) to detect ink viscosity. The metal ink roller (2) cooperates with the ink coating assembly (5) to uniformly coat the outer wall of the metal ink roller (2). The ink return pipe (4) cooperates with the ink coating assembly (5) to circulate ink coating. The ink balancing assembly (6) is used to push the rubber test roller (3) and adhere the ink located on the metal ink roller (2) and stabilize its separation.

2. The printing ink viscosity testing device according to claim 1, characterized in that, The balanced ink adhesion assembly (6) includes a positioning frame (61), a fine grinding turntable (62), a connecting rod (63), a torque sensor (64), a push cylinder (65), and a push sleeve (66). The positioning frame (61) is fixedly connected inside the detection box (1). The fine grinding turntable (62) is embedded inside the positioning frame (61) and slidably connected to the inner surface of the positioning frame (61). The torque sensor (64) is sleeved on the outside of the connecting rod (63). The two ends of the connecting rod (63) are fixedly connected to the opposite side surfaces of the fine grinding turntable (62) and the rubber test roller (3), respectively. The push cylinder (65) is installed on the outside of the detection box (1). One end of the push sleeve (66) is installed on the outside of the output end of the push cylinder (65), and the other end of the push sleeve (66) is sleeved on the outside of the connecting rod (63).

3. The printing ink viscosity testing device according to claim 1, characterized in that, The ink coating assembly (5) includes a metal telescopic tube (51), a feeding tube (52), a sleeve (53), a hydraulic cylinder (54), and a connecting bracket (55). The metal telescopic tube (51) is snapped onto the top outside of the ink return pipe (4). The feeding tube (52) is snapped onto the outside of the metal telescopic tube (51). The sleeve (53) is sleeved on the outside of the feeding tube (52). The hydraulic cylinder (54) is installed on the top of the detection box (1). The connecting bracket (55) is fixedly connected to the outside of the output end of the hydraulic cylinder (54), and the outside of the connecting bracket (55) is fixedly connected to the outer surface of the sleeve (53).

4. The printing ink viscosity testing device according to claim 2, characterized in that, The positioning frame (61) also has an embedding groove (7) that matches the size of the fine grinding turntable (62).

5. The printing ink viscosity testing device according to claim 1, characterized in that, A DC motor (8) is also provided on the outside of the detection box (1), and the output end of the DC motor (8) is fixedly connected to one end of the metal ink roller (2).

6. The printing ink viscosity testing device according to claim 1, characterized in that, An ink pump (9) for circulating material feeding is also provided on the outside of the ink return pipe (4).

7. The printing ink viscosity testing device according to claim 5, characterized in that, The bottom inner side of the detection box (1) is provided with an ink guide ramp (10) with an inclined structure.

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