Gravure ultrasonic automatic solvent adding device

Abstract

The invention discloses a gravure ultrasonic automatic solvent adding device, and belongs to the technical field of printing equipment, the gravure ultrasonic automatic solvent adding device comprises a first oil tank for preliminarily mixing printing ink, a concentration detection unit and a controller, the first oil tank is provided with a first conveying pipe for filling the printing ink and a second conveying pipe for filling an additive; a first conveying pipe and a second conveying pipe are arranged in the first oil tank, a first control valve and a second control valve are arranged on the first conveying pipe and the second conveying pipe correspondingly, and an ultrasonic generator used for mixing ink and additives is further arranged in the first oil tank. All corners and areas in the box body can be fully covered, misjudgment on the overall condition caused by only detecting the local position is avoided, the first control valve and the second control valve are controlled to be independently opened and closed through the controller according to the detection result, ink or additives are independently added, and the overall quality of the ink is improved.

Description

Technical Field

[0001] The invention relates to the technical field of printing equipment, in particular to a gravure printing ultrasonic automatic solvent adding device. Background Art

[0002] In gravure printing, solvents play a vital role. They can dissolve materials such as resins, additives and auxiliaries, make the ink fluid, and evenly disperse the pigments, which helps the ink to transfer on the printing press and form a good bond with the printing material. At the same time, solvents can also reduce the viscosity of the ink, making it more suitable for printing. In gravure printing, the energy generated by high-frequency vibration of ultrasound is usually used to accelerate the diffusion and dissolution process of the solvent in the ink. At the same time, ultrasound can also generate tiny bubbles, which release energy when they burst, promoting the mixing of the solvent and the ink.

[0003] When adding solvent, quantitative accuracy is crucial. Excessive solvent will cause the ink particles to decrease in unit volume, thus affecting the ink transfer amount and printing quality, which may cause hue deviation. In severe cases, it will cause water marks on solid printing, edge blurring and other faults, and may even cause missing prints. Insufficient solvent will make the ink viscosity too high, affecting the printing effect and easily causing knife marks, dirty plates, blockages and other phenomena. Therefore, in actual operation, instruments are usually set in the container containing the ink to detect the ink viscosity to accurately control the amount of solvent added.

[0004] However, after the solvent is added, it may not be possible to evenly mix the ink and solvent in the entire container immediately. If the concentration detector is installed near the solvent inlet, the mixing speed in these areas is relatively fast and may soon reach the qualified detection standard. At this time, the addition of solvent may be stopped. However, at the edge or bottom corner of the container, the stirring is uneven due to failure to reach a certain mixing time. The mixing degree of ink and solvent may be low and not completely mixed. If the addition of solvent is stopped at this time, insufficient amount of solvent may be added later, affecting the quality of the ink. Summary of the invention

[0005] The embodiment of the present invention provides a gravure printing ultrasonic automatic solvent adding device to solve the above-mentioned technical problems.

[0006] The embodiment of the present invention adopts the following technical scheme: it includes a first oil tank for preliminary mixing of ink, a concentration detection unit and a controller, the first oil tank is provided with a first delivery pipe for filling ink and a second delivery pipe for filling additives, and the first delivery pipe and the second delivery pipe are respectively provided with a first control valve and a second control valve, and the first oil tank is also provided with an ultrasonic generator for mixing ink and additives, the concentration detection unit is used to detect the ink concentration in the first oil tank, the concentration detection unit includes a plurality of detectors, and the plurality of detectors are equidistantly installed on the inner bottom wall of the first oil tank according to the geometric shape of the first oil tank, so as to achieve comprehensive coverage detection of the ink concentration in different areas inside the first oil tank, and the controller is configured to receive data collected by the detector of the concentration detection unit concentration data, and determines whether the concentration data received from one or more detectors is within a preset threshold range. When all the detector data are within the preset threshold, the overall ink concentration in the first oil tank is determined to be qualified. If one or more detector data are not within the preset threshold, the overall ink concentration in the first oil tank is determined to be unqualified. The controller is electrically connected to the first control valve and the second control valve, and is used to control the opening and closing of the first control valve and the second control valve when the overall ink concentration in the first oil tank is determined to be unqualified, so as to realize the supplementary addition of ink or additives. The concentration detection unit performs a comprehensive multi-point detection of the ink concentration in the first oil tank to ensure the ink quality, and the ink or additives are finely added according to the detection results to ensure that the ink concentration in the box meets the accuracy and stability requirements of the gravure printing operation.

[0007] Furthermore, it also includes a second oil tank, a material delivery pipeline is connected between the second oil tank and the first oil tank, and the material delivery pipeline is provided with a delivery valve electrically connected to the controller, so as to facilitate the delivery of the mixed ink to the second oil tank for direct printing.

[0008] Furthermore, the first delivery pipe and the second delivery pipe are both connected to the first oil tank through a main pipeline, and the main pipeline and the delivery pipeline are respectively provided with a first flow meter and a second flow meter electrically connected to the controller, so as to adjust the addition amount according to the output of the ink.

[0009] Furthermore, it also includes a timing module electrically connected to the controller, which is used to detect time and provide time information to the controller. When the controller receives that the first control valve and the second control valve are opened at the same time, the controller controls the concentration detection unit to stop working, and based on the time information provided by the timing module, the controller stops the concentration detection unit from working within a specific time after the first control valve and the second control valve are opened, and then controls the concentration detection unit to resume working to continue detecting the ink concentration, so as to avoid the newly added ink or solvent from adhering to the detector, or the ink with a qualified proportion remaining on the detector during the previous mixing work, causing the detector to give a false alarm.

[0010] Furthermore, it also includes a data processing unit and an alarm unit electrically connected to the controller, wherein the data processing unit is used to receive and process the detection value output by the concentration detection unit, and the data processing unit is also configured to continuously monitor the detection value output by each detector. If it is determined that the detection value of a certain detector has not been updated within a preset time interval, or if it is determined that the detection value output by a certain detector is continuously in an abnormal range, the alarm is controlled by the controller to issue an alarm to promptly remind personnel.

[0011] Furthermore, the first delivery pipeline is connected to a micro-adjustment tube extending into the first oil tank, the micro-adjustment tube is provided with a regulating valve, and the input end of the micro-adjustment tube is located at the upstream end of the first control valve, so as to facilitate more accurate addition of ink.

[0012] Furthermore, when the feed valve is opened, the controller controls the first control valve, the second control valve and the regulating valve to close, so as to avoid the addition of additives and ink while the mixed ink that meets the standards is discharged, thereby affecting the ink quality.

[0013] A method for adding solvent to a gravure ultrasonic automatic solvent adding device, comprising the following steps:

[0014] S1: Add ink and additives into the first oil tank through the first delivery pipe and the second delivery pipe, and mix them evenly through the ultrasonic generator;

[0015] S2: Performing a comprehensive detection of the ink concentration in the first oil tank through a concentration detection unit;

[0016] S3: When the test results of all the detectors are within the preset range, the oil can be fed into the second oil tank through the feed pipeline and wait for printing.

[0017] At least one of the above technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0018] In the present invention, all-round multi-point detection is achieved in the first oil tank through the concentration detection unit, which can fully cover all corners and areas inside the tank, avoid misjudgment of the overall situation caused by only detecting local positions, and control the first control valve and the second control valve to open and close separately according to the detection results to add ink or additives separately through the controller, thereby improving the overall quality of the ink, thereby ensuring that the ink concentration meets the accuracy and stability requirements of the gravure printing operation, and realizing automatic, precise and dynamic regulation of the ink concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 It is a structural schematic diagram of the first oil tank in the present invention;

[0022] Figure 3 It is a schematic diagram of the installation structure of the concentration detection unit in the present invention;

[0023] Figure 4 is a schematic cross-sectional structure diagram of the first oil tank in the present invention;

[0024] Figure 5 The system framework provided by the present invention Figure 1 ;

[0025] Figure 6 The system framework provided by the present invention Figure 2 ;

[0026] Figure 7 The system framework provided by the present invention Figure 3 .

[0027] Reference numerals

[0028] The first oil tank 1, the first delivery pipe 11, the first control valve 101, the second delivery pipe 12, the second control valve 102, the ultrasonic generator 13, the concentration detection unit 2, the detector 21, the controller 3, the second oil tank 4, the feed pipeline 41, the second flow meter 401, the delivery valve 42, the main pipeline 5, the first flow meter 51, the timing module 6, the data processing unit 7, the warning unit 8, the alarm 81, the micro-adjustment tube 9, and the regulating valve 91. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] The embodiment of the present invention provides a gravure ultrasonic automatic solvent adding device, comprising a first oil tank 1 for preliminarily mixing ink, a first delivery pipe 11 for filling ink and a second delivery pipe 12 for filling additives are provided on the first oil tank 1, a first control valve 101 and a second control valve 102 are provided on the first delivery pipe 11 and the second delivery pipe 12 respectively, and an ultrasonic generator 13 for mixing ink and additives is also provided inside the first oil tank 1, after the ink and additives are added into the first oil tank 1 through the first delivery pipe 11 and the second delivery pipe 12, the ink and additives are mixed by the energy generated by the high-frequency vibration of the ultrasonic generator 13, and a concentration detection unit 2 for detecting the concentration of the ink is provided inside the first oil tank 1, and the concentration detection unit 2 includes a plurality of detectors 21, and the detector 21 can use oil Ink concentration tester, particle size analyzer and other equipment that can detect the concentration of printing ink. Multiple detectors 21 are equidistantly installed on the inner bottom wall of the first oil tank 1 according to the geometric shape of the first oil tank 1 to achieve comprehensive coverage detection of ink concentration in different areas inside the first oil tank 1. The installation positions of multiple detectors 21 are adjusted according to the shape of the first oil tank 1. For example, when the first oil tank 1 is rectangular, the detectors 21 can be evenly spaced on the two diagonals of the bottom wall of the rectangular first oil tank 1, and the detectors 21 are all set at the midpoints of the four sides of the rectangular bottom wall; when the bottom wall of the first oil tank 1 is circular, the detectors 21 are evenly spaced radially around the center of the circle, and several detectors 21 are equidistantly supplemented along the circumferential direction at the edge of the bottom wall, etc., mainly to achieve that the detectors 21 can evenly cover and detect various parts in the first mailbox, thereby improving the uniformity of ink detection;

[0032] It also includes a controller 3, which is configured to receive concentration data collected by the detector 21 of the concentration detection unit 2, and determine whether the concentration data received from one or more detectors 21 is within a preset threshold range. When the data of all detectors 21 are within the preset threshold, it is determined that the overall ink concentration in the first oil tank 1 is qualified. If the data of one or more detectors 21 are not within the preset threshold, it is determined that the overall ink concentration in the first oil tank 1 is unqualified. The controller 3 is electrically connected to the first control valve 101 and the second control valve 102, and is used to control the opening and closing of the first control valve 101 and the second control valve 102 when it is determined that the overall ink concentration in the first oil tank 1 is unqualified, so as to realize the supplementary addition of ink or additives, improve the overall quality of the ink, thereby ensuring that the ink concentration meets the accuracy and stability requirements of the gravure printing operation, and realize automatic, precise dynamic regulation of the ink concentration, without the need for manual addition, which is more convenient and accurate.

[0033] Preferably, a second oil tank 4 is further included, and a feed pipe 41 is connected between the second oil tank 4 and the first oil tank 1, and a feed valve 42 electrically connected to the controller 3 is provided on the feed pipe 41. In order to ensure the printing quality, after the ink and the additive are mixed to within the qualified threshold, the ink in the first oil tank 1 is allowed to enter the second oil tank 4 by opening the feed valve 42, and can be directly used for printing, thereby avoiding adding ink or additives during printing to affect the printing quality.

[0034] Preferably, the first delivery pipe 11 and the second delivery pipe 12 are both connected to the first oil tank 1 through the main pipeline 5, and the main pipeline 5 and the delivery pipeline 41 are respectively provided with a first flow meter 51 and a second flow meter 401 electrically connected to the controller 3. The second flow meter 401 detects the amount of ink entering the second oil tank 4 from the first oil tank 1, and the first flow meter 51 detects the total amount of ink and additives entering the first oil tank 1. That is, if the detection value of the first flow meter 51 is equal to the detection value of the second flow meter 401, it can be ensured that the same amount of ink is injected as discharged, thereby avoiding the phenomenon of large discharge and small injection, which affects the supply of the second oil tank 4 to the printing equipment.

[0035] Preferably, it also includes a timing module 6 electrically connected to the controller 3, which is used to detect time and provide time information to the controller 3. When the controller 3 receives that the first control valve 101 and the second control valve 102 are opened at the same time, the controller 3 controls the concentration detection unit 2 to stop working. Based on the time information provided by the timing module 6, the controller 3 stops the concentration detection unit 2 within a specific time after the first control valve 101 and the second control valve 102 are opened, and then controls the concentration detection unit 2 to resume working and continue to detect the ink concentration. When the first control valve 101 and the second control valve 102 are opened to add ink and additives, the concentration detection unit 2 is initially The ink and additives entering the first step may not be completely mixed. At this time, the ink concentration in the first oil tank 1 may not be within the preset threshold value, or after the ink in the first oil tank 1 is transported to the second oil tank 4, the original mixed ink with a concentration threshold within the set range will remain on the detector 21 in the first oil tank 1. At this time, directly adding ink and additives may cause a false alarm of the concentration detection unit 2. At this time, the controller 3 can control the concentration detection unit 2 to be temporarily closed, wait for a period of time and use the ultrasonic generator 13 to fully mix the two before detection. The timing module 6 can be used to adjust the time for the concentration detection unit 2 to stop working, such as 5 minutes, 10 minutes, etc.

[0036] Preferably, it also includes a data processing unit 7 and an alarm unit 8 electrically connected to the controller 3. The data processing unit 7 is used to receive and process the detection value output by the concentration detection unit 2. The data processing unit 7 is also configured to continuously monitor the detection value output by each detector 21. If it is determined that the detection value of a certain detector 21 has not been updated within a preset time interval, or if it is determined that the detection value output by a certain detector 21 is continuously in an abnormal range, the controller 3 controls the alarm unit 8 to issue an alarm. Specifically, the data processing unit 7 receives the detection data of each detector 21. When the detection data of one of the detectors 21 does not change for a long time, Or when there is no detection data, it can be determined that the detector 21 has a fault, and it is impossible to detect the ink concentration in the area near the detector 21 in the first oil tank 1, then it is impossible to comprehensively judge the overall ink concentration in the first oil tank 1. In order to prompt the operator to make timely adjustments, the controller 3 will control the alarm unit 8 to issue an alarm, wherein the alarm unit 8 can be a plurality of alarms 81 corresponding to the detector 21 one by one, such as the installation position of the alarm 81 is opposite to the installation position of the detector 21, or the number of the alarm 81 is the same as the number of the detector 21, etc., to quickly know which specific detector 21 has a problem, so that targeted processing can be carried out.

[0037] Preferably, the first delivery pipe 11 is connected to a micro-adjusting tube 9 extending into the first oil tank 1, and a regulating valve 91 is provided on the micro-adjusting tube 9, and the input end of the micro-adjusting tube 9 is located at the upstream end of the first control valve 101. Usually, when adding ink, in order to improve the adding efficiency, the ink adding pipeline is usually larger in specification, and the amount of additive added is small, so a pipeline with a smaller diameter can be used. When the ink concentration in the first oil tank 1 is not within the set threshold and ink needs to be added, a small amount of ink can be added through the micro-adjusting tube 9 to avoid adding too much at one time.

[0038] Preferably, when the feed valve is opened, the controller 3 controls the first control valve 101, the second control valve 102 and the regulating valve 91 to close, so as to prevent the unmixed ink and additives from being injected into the first oil tank 1 while the ink in the first oil tank 1 is being transported to the second oil tank 4, causing deviations in ink concentration and affecting printing quality.

[0039] The invention also provides a method for adding solvents to the gravure ultrasonic automatic solvent adding device, which is implemented based on the above-mentioned method for adding solvents to the gravure ultrasonic automatic solvent adding device, and the method comprises the following steps:

[0040] S1: Ink and additives are added into the first oil tank 1 through the first delivery pipe 11 and the second delivery pipe 12, and are mixed evenly through the ultrasonic generator 13;

[0041] S2: Performing a comprehensive detection of the ink concentration in the first oil tank 1 through the concentration detection unit 2;

[0042] S3: When the detection results of all detectors 21 are within the preset range, the oil can be fed into the second oil tank 4 through the feeding pipeline 41 and wait for printing.

[0043] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A gravure ultrasonic automatic solvent adding device, characterized in that: include; A first oil tank (1) for preliminarily mixing ink, the first oil tank (1) being provided with a first delivery pipe (11) for adding ink and a second delivery pipe (12) for adding additives, the first delivery pipe (11) and the second delivery pipe (12) being provided with a first control valve (101) and a second control valve (102) respectively, and an ultrasonic generator (13) for mixing ink and additives is also provided inside the first oil tank (1); A concentration detection unit (2) is used to detect the ink concentration in the first oil tank (1), the concentration detection unit (2) comprising a plurality of detectors (21), the plurality of detectors (21) being equidistantly mounted on the inner bottom wall of the first oil tank (1) according to the geometric shape of the first oil tank (1), so as to achieve comprehensive coverage detection of the ink concentration in different areas inside the first oil tank (1); A controller (3) is configured to receive concentration data collected by the detector (21) of the concentration detection unit (2), and to determine whether the concentration data received from one or more detectors (21) is within a preset threshold range. When the data of all detectors (21) are within the preset threshold, it is determined that the overall ink concentration in the first oil tank (1) is qualified. If the data of one or more detectors (21) are not within the preset threshold, it is determined that the overall ink concentration in the first oil tank (1) is unqualified. The controller (3) is electrically connected to the first control valve (101) and the second control valve (102) and is used to control the opening and closing of the first control valve (101) and the second control valve (102) when it is determined that the overall ink concentration in the first oil tank (1) is unqualified, so as to realize the supplementary addition of ink or additives.

2. The gravure ultrasonic automatic solvent adding device according to claim 1, characterized in that: It also comprises a second oil tank (4), wherein a material delivery pipeline (41) is connected to the first oil tank (1), and a delivery valve (42) electrically connected to the controller (3) is provided on the material delivery pipeline (41).

3. The gravure ultrasonic automatic solvent adding device according to claim 2, characterized in that: The first delivery pipe (11) and the second delivery pipe (12) are both connected to the first oil tank (1) through a main pipeline (5), and the main pipeline (5) and the material delivery pipeline (41) are respectively provided with a first flow meter (51) and a second flow meter (401) electrically connected to the controller (3).

4. The gravure ultrasonic automatic solvent adding device according to claim 1, characterized in that: The invention also comprises a timing module (6) electrically connected to the controller (3) and used for detecting time and providing time information to the controller (3); when the controller (3) receives that the first control valve (101) and the second control valve (102) are opened at the same time, the controller (3) controls the concentration detection unit (2) to stop working; and based on the time information provided by the timing module (6), the controller (3) stops the concentration detection unit (2) from working within a specific time after the first control valve (101) and the second control valve (102) are opened, and then controls the concentration detection unit (2) to resume working and continue to detect the ink concentration.

5. The gravure ultrasonic automatic solvent adding device according to claim 1, characterized in that: The device also comprises a data processing unit (7) and an alarm unit (8) electrically connected to the controller (3); the data processing unit (7) is used to receive and process the detection value output by the concentration detection unit (2); the data processing unit (7) is also configured to continuously monitor the detection value output by each detector (21); if it is determined that the detection value output by a certain detector (21) has not been updated within a preset time interval, or if it is determined that the detection value output by a certain detector (21) is continuously within an abnormal range, the controller (3) controls the alarm unit (8) to issue an alarm.

6. The gravure ultrasonic automatic solvent adding device according to claim 1, characterized in that: The first delivery pipe (11) is connected to a micro-adjustment pipe (9) extending into the first oil tank (1), the micro-adjustment pipe (9) is provided with a regulating valve (91), and the input end of the micro-adjustment pipe (9) is located at the upstream end of the first control valve (101).

7. The gravure ultrasonic automatic solvent adding device according to claim 1, characterized in that: When the material delivery valve is opened, the controller (3) controls the first control valve (101), the second control valve (102) and the regulating valve (91) to be closed.

8. A method for adding solvent applied to a gravure ultrasonic automatic solvent adding device as claimed in any one of claims 1 to 7, characterized in that: The adding method is as follows: S1: Ink and additives are added into the first oil tank (1) through the first delivery pipe (11) and the second delivery pipe (12), and are mixed evenly through the ultrasonic generator (13); S2: Performing a comprehensive detection of the ink concentration in the first oil tank (1) through the concentration detection unit (2); S3: When the detection results of all detectors (21) are within a preset range, the oil can be fed into the second oil tank (4) through the feed pipe (41) to wait for printing.

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