An automatic ink color adjusting device and a printing ink detection method thereof

Abstract

The application discloses an automatic ink color adjusting device and a printing ink detection method thereof, which comprises a box body, a moving device, a feeding device, a control device and a detection device. The moving device is arranged in the middle of the box body. The moving device comprises a guide rail, a sliding block slidably arranged on the guide rail and a first driving device for driving the sliding block to move. The sliding block is provided with a detachably arranged ink barrel. The feeding device is arranged at the front end of the moving device. The feeding device is composed of a plurality of mother bottles and pump bodies which are integrally arranged with the mother bottles or separately arranged. The feeding device is detachably arranged below the moving device. The pump body delivers the ink color mother to the ink barrel through a pipeline. The detection device is used for detecting the ink color of the ink barrel and judging whether it meets the predetermined requirements. The moving device changes the traditional single mechanism problem, facilitates the automatic color matching, and makes the color matching simpler. The detection device can realize the real-time color adjustment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ink color adjusting equipment, in particular to an ink color automatic adjusting device and a printing ink detection method thereof. BACKGROUND

[0002] In the printing of cigarette labels, the printing ink involves color depth, weather resistance and anti-counterfeiting requirements. However, the existing ink adjustment has the following problems: 1. It cannot realize automatic color adjustment, but only can add or reduce according to the fixed amount of the formula or the ink; 2. It can only compare the color of the color card with the color of the raw material, without perfect color inspection standard; 3. The color adjustment is mainly adjusted by manual, so it is necessary to test the ink before printing, that is, to take part of the pigment for smearing or printing and then adjust; 4. Due to the requirements of anti-counterfeiting and weather resistance of cigarette labels, the color depth of the pigment also needs to be adjusted (the existing cigarette labels generally have laser gloss), so the visual inspection is prone to error, and the precision of the inspection is poor. SUMMARY

[0003] The main purpose of the present application is to provide an ink color automatic adjusting device and a printing ink detection method thereof, which realizes the adjustment of the ink through the automatic adjusting device, at the same time, realizes the adjustment of the color through the predetermined parameters of the color, and forms a database to realize the automatic adjustment.

[0004] To achieve the above purpose, the present application provides an ink color automatic adjusting device, comprising,

[0005] a box body;

[0006] a moving device arranged at the middle part of the box body, the moving device comprising a guide rail, a sliding block slidingly arranged on the guide rail, and a first driving device driving the sliding block to move, the sliding block being provided with a detachably arranged ink barrel;

[0007] a feeding device arranged at the front end of the moving device, the feeding device being composed of a plurality of mother bottles and pump bodies integrally arranged with the mother bottles or separately arranged with the mother bottles, the feeding device being detachably arranged below the moving device,

[0008] the pump bodies conveying the ink color mother to the ink barrel through a pipeline;

[0009] a control device for controlling the conveying amount of the ink color mother of each pump body;

[0010] a stirring device arranged at the middle part of the moving device, when a predetermined amount of each color mother is conveyed to the ink barrel, the sliding block drives the ink barrel to move to the position of the stirring device, the stirring device being used for stirring the ink in the ink barrel;

[0011] A detection device is used to detect the color of the ink in the ink bucket and determine whether it meets the predetermined requirements.

[0012] In the existing automatic ink color adjusting device, the ink bucket and the stirring device are generally integrated, and then the predetermined amount of ink is taken out for color matching. However, there is a color difference, so there is a slight difference in color intensity. This is the reason why people occasionally find that the color of the cigarette label is different.

[0013] The traditional single mechanism problem is changed by the moving device, which facilitates the automatic adjustment of color, and the color adjustment is simpler. The color adjustment can be realized in real time through the detection device, which effectively improves the color consistency precision of the ink color, and the structure is simple and stable. Although the structure is simple, the color adjustment is simpler, and the box body can be dark. The technical scheme of the present application.

[0014] A printing ink detection method, characterized in that it comprises the above-mentioned automatic ink color adjusting device.

[0015] S1: The moving device drives the ink bucket to pass through the feeding device, the stirring device and the detection device in turn;

[0016] S2: The control device controls each mother bottle of the feeding device to deliver a predetermined amount of ink of the formula into the ink bucket;

[0017] S3: The stirring device stirs the ink in the ink bucket to a predetermined mixing degree;

[0018] S4: The detection device detects the color of the ink in the ink bucket and determines whether it meets the predetermined requirements; when the detection does not meet the predetermined requirements, the moving device drives the ink bucket to move to the feeding device, and the control device controls the pump to add a predetermined amount of ink color mother, and then moves to the stirring device.

[0019] The detection method in S4 comprises:

[0020] ① The ink bucket and the detection device are located in a dark environment without external light;

[0021] ② The detection includes a light source and a camera cooperating with the light source;

[0022] ③ The light source emits a predetermined light to irradiate the ink in the ink bucket, and the camera takes pictures of the ink irradiated with light and obtains multiple detection object pictures;

[0023] ④ The detection object picture decomposes the color into a detection object color pixel value, and the detection object color pixel value is analyzed by a computer into a detection object CIELAB color difference map;

[0024] ⑤ The detection device is provided with a standard CIELAB color difference map;

[0025] 6. The CIELAB color difference chart comprises column coordinates L*, brightness a*, and chromaticity coordinate b* axes;

[0026] 7. The test object CIELAB color difference chart and the standard CIELAB color difference chart are compared one by one through multiple test object pictures, and the parameter value range, the color difference range, and the light influence factor are considered;

[0027] Then, it is judged whether the un-solidified ink meets the standard value.

[0028] The ink has certain light reflection characteristics before the ink is solidified, and the pictures obtained through the predetermined light source and the predetermined angle can effectively reduce the interference of external sources,

[0029] The light reflection value of the un-solidified ink can be obtained through the brightness a* of the CIELAB color difference chart, and the error caused by the human eye taper is reduced, that is, the color card comparison of the human eye is greatly affected by the light reflection value of the ink, so when the angle is different, the color card obtained will have a difference value;

[0030] The standard CIELAB color difference chart and the test object CIELAB color difference chart are compared one by one;

[0031] The above interference factors can be eliminated or corrected, and the color detection effect of the ink is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic view of the present application;

[0033] Figure 2 is a schematic view of the upper stirring device;

[0034] Figure 3 is a schematic view of the lower stirring device;

[0035] Figure 4 is a multi-angle detection schematic diagram

[0036] Figure 5 is a detection method diagram in S4.

[0037] In the drawings,

[0038] 1 is a box body,

[0039] 2 is a moving device, 21 is a guide rail, 22 is a sliding block, and 23 is a first driving device,

[0040] 3 is a feeding device, 31 is a mother bottle, and 32 is a pump body,

[0041] 4 is a stirring device, 41 is a vertical moving frame, 42 is a rotating motor, and 43 is a stirring roller,

[0042] 5 is an ink barrel,

[0043] 6 is a receiving device,

[0044] 7 is a clearance,

[0045] 8 is a sealing ring, 81 is a positioning part, and 82 is a positioning groove,

[0046] 9 is a detection device, 91 is a light source, and 92 is a camera. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0048] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0049] In addition, if the embodiments of the present application involve descriptions of "first" or "second", etc., the descriptions of "first" or "second" are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but must be based on the realization of those skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0050] As shown in FIG. 1, an automatic ink color adjusting device comprises, Figures 1 to 4 a box body 1;

[0051] a moving device 2 arranged at the middle part of the box body 1, the moving device 2 comprising a guide rail 21, a sliding block 22 slidably arranged on the guide rail 21, and a first driving device 23 for driving the sliding block 22 to move, the sliding block 22 being provided with a detachably arranged ink barrel 5;

[0052]

[0053] ​A feeding device 3 is arranged at the front end of the moving device 2, and the feeding device 3 is composed of a plurality of mother bottles 31 and pump bodies 32 which are integrally arranged with the mother bottles 31 or separately arranged, and the feeding device 3 is detachably arranged at the lower position of the moving device 2,

[0054] The pump bodies 32 convey the ink color mother to the ink barrel 5 through the pipes;

[0055] A control device is arranged for controlling the ink color mother conveying amount of each pump body 32;

[0056] A stirring device 4 is arranged at the middle position of the moving device 2, and when the predetermined amount of each color mother is conveyed to the ink barrel 5, the sliding block 22 drives the ink barrel 5 to move to the position of the stirring device 4, and the stirring device 4 is arranged for stirring the ink in the ink barrel 5;

[0057] A detection device is arranged for detecting the ink color of the ink barrel 5 and judging whether it meets the predetermined requirements.

[0058] In the existing ink color automatic color matching device, the ink barrel 5 and the stirring device 4 are generally integrated, and then the predetermined amount of ink is taken out for color matching, and there is a color difference, so there is a small difference in color degree, which is the problem that people occasionally find the color difference of cigarette labels when using;

[0059] The moving device 2 changes the traditional single mechanism problem, facilitates the automatic matching of color, and the matching color is simpler, and the color can be adjusted in real time through the detection device, effectively improves the color consistency precision of the ink color, and the structure is simple and stable, although the structure is simple, but the color matching is simpler, and the box 1 can be a dark environment, thereby reducing the interference of external light, and the detection precision can be guaranteed.

[0060] Specifically, the stirring device 4 is a vertical moving frame 41 arranged on the upper wall of the box, and a rotating motor 42 arranged on the vertical moving frame 41, and the lower end of the rotating motor 42 is connected with a stirring roller 43. This structure has a more comprehensive stirring effect, that is, the stirring roller 43 can be vertically adjusted, thereby realizing the sufficient mixing of the ink.

[0061] In the embodiment of the application, the box 1 is arranged on the side adjacent to the stirring device 4, and a receiving device 6 is arranged on the side adjacent to the stirring device 4, and the receiving device 6 can be moved to the lower position of the stirring device 4 and is arranged for receiving the ink of the stirring device 4. Effectively avoid the pollution of the ink.

[0062] Specifically, the ink barrel 5 is provided with a pivotally arranged stirring roller 43, a sealing ring 8 is arranged between the stirring roller 43 and the ink barrel 5, the lower portion of the ink barrel 5 is provided with an empty space 7, the lower end of the stirring roller 43 extends into the empty space 7 and is provided with a positioning groove 82, and the stirring device 4 comprises a vertical moving frame 41 and a rotating motor 42 arranged on the vertical moving frame 41, and the driving end of the rotating motor 42 is provided with a positioning portion 81 matched with the positioning groove 82.

[0063] The vertical moving frame 41 can be a telescopic electric cylinder or a vertical screw pair.

[0064] That is, the lower stirring device 4 does not need a special shielding object and has a simple and stable structure.

[0065] Specifically, the positioning groove 82 is in a non-circular shape, the positioning groove 82 is triangular or quadrilateral, and the upper end of the positioning portion 81 is provided with a chamfer in a reduced diameter to facilitate the matching of the positioning groove 82 and the positioning portion 81 and the extension of the positioning portion 81.

[0066] A printing ink detection method, comprising the automatic ink color adjusting device.

[0067] S1: The moving device 2 drives the ink barrel 5 to sequentially pass through the feeding device 3, the stirring device 4 and the detection device; (of course, the detection method can also be applied to the existing ink color adjusting device);

[0068] S2: The control device controls each mother bottle 31 of the feeding device 3 to deliver a predetermined amount of ink of a predetermined formula into the ink barrel 5;

[0069] S3: The stirring device 4 stirs the ink in the ink barrel 5 to a predetermined mixing degree;

[0070] S4: The detection device detects the color of the ink in the ink barrel 5 and judges whether it meets the predetermined requirements; when the detection does not meet the predetermined requirements, the moving device 2 drives the ink barrel 5 to move to the feeding device 3, the control device controls the pump body 32 to add a predetermined ink color mother, and then moves to the stirring device 4.

[0071] The detection method in S4 comprises:

[0072] ①The ink barrel 5 and the detection device are located in a dark environment without external light;

[0073] ②The detection comprises a light source and a camera matched with the light source;

[0074] ③The light source emits a predetermined light to irradiate the ink in the ink barrel 5, and the camera photographs the ink irradiated with the light and obtains multiple detection object pictures;

[0075] The color of the detection object picture is decomposed into detection object color pixel values, and the detection object color pixel values are analyzed by a computer into a detection object CIELAB color difference atlas;

[0076] The detection device is provided with a standard CIELAB color difference atlas;

[0077] The CIELAB color difference atlas includes column coordinates L*, brightness a*, and chromaticity coordinate b* axes; (wherein the calculation of the values is prior art),

[0078] The detection object CIELAB color difference atlas and the standard CIELAB color difference atlas are compared one by one through multiple detection object pictures, considering the parameter value range, the color difference range, and the light influence factors;

[0079] Then, it is determined whether the un-solidified ink meets the standard value.

[0080] The ink has certain reflective characteristics before the ink is solidified. By obtaining pictures through a predetermined light source and a predetermined angle, external source interference can be effectively reduced,

[0081] The reflective value of the un-solidified ink can be obtained through the brightness a* of the CIELAB color difference atlas, thereby reducing the error caused by the human eye taper, i.e., the color card comparison of the human eye is greatly affected by the reflective value of the ink. Therefore, when the angle is different, the color card obtained will have a difference;

[0082] The standard CIELAB color difference atlas and the detection object CIELAB color difference atlas are compared;

[0083] The above interference factors can be eliminated or corrected, thereby improving the color detection effect of the ink.

[0084] Specifically, the detection object CIELAB color difference atlas eliminates or corrects the interference factors through a computer, and forms a comparison CIELAB color difference atlas;

[0085] The interference factors include reflective values, light source angle values, and light source types;

[0086] The detection object CIELAB color difference atlas is compared with the standard CIELAB color difference atlas, and then first data is obtained;

[0087] Then, the comparison CIELAB color difference atlas is compared with the standard CIELAB color difference atlas, and second data is obtained.

[0088] Through comparison of the two data, the influence of moisture, reflective ink, etc. on the color of the ink can be obtained.

[0089] Specifically, the light source is a point light source, a surface light source, a coaxial light source, or a dome light source;

[0090] The coaxial light source and the dome light source are used simultaneously. By adjusting the brightness between the two light sources, the predetermined area of the ink is uniformly covered by light, and problems such as shadow surface and reflection are avoided.

[0091] The dome light source is a high-uniformity light source, and the light emitted by the high-brightness patch LED is uniformly formed after spherical diffuse reflection. The dome light source is suitable for detecting objects with surface reflection and unevenness.

[0092] The coaxial light source provides more uniform illumination than traditional light sources, and at the same time avoids the reflection of the object, thereby improving the accuracy and reproducibility of machine vision.

[0093] Specifically, the light source and the camera can adjust the relative angle, thereby obtaining pictures of the detected object at different angles. Different parameters are obtained, or the adjustment is performed according to different ink reflectivity (wherein the smoke mark generally has a certain gloss, and the adjustment is performed according to the gloss).

[0094] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or direct / indirect application in other related technical fields within the concept of the present application, and the contents of the present application are included in the patent protection scope of the present application.

Claims

1. A method of printed ink detection, characterized by, The application relates to an automatic ink color adjusting device, The automatic ink color adjusting device comprises a box body; a moving device arranged in the middle of the box body, the moving device comprising a guide rail, a sliding block slidably arranged on the guide rail, and a first driving device for driving the sliding block to move, the sliding block being provided with an ink barrel which is detachably arranged; a feeding device arranged at the front end of the moving device, the feeding device being composed of a plurality of mother bottles and pump bodies which are integrally arranged with the mother bottles or separately arranged, the feeding device being detachably arranged below the moving device, the pump bodies conveying ink color mothers to the ink barrel through conduits; a control device for controlling the ink color mother conveying amount of each pump body; a stirring device arranged in the middle of the moving device, when a predetermined amount of each color mother is conveyed to the ink barrel, the sliding block drives the ink barrel to move to the position of the stirring device, and the stirring device is used for stirring the ink in the ink barrel; a detection device for detecting the ink color of the ink barrel and judging whether the ink color meets the predetermined requirements; the stirring device is a vertical moving frame arranged on the upper wall of the box body and a rotating motor arranged on the vertical moving frame, and the lower end of the rotating motor is connected with a stirring roller; a receiving device is arranged on the side of the box body adjacent to the stirring device, the receiving device can move to the position below the stirring device and is used for receiving the ink of the stirring device; the ink barrel is provided with a pivotally arranged stirring roller, a sealing ring is arranged between the stirring roller and the ink barrel, the lower portion of the ink barrel is provided with an empty space, the lower end of the stirring roller extends into the empty space and is provided with a positioning groove, the stirring device comprises a vertical moving frame and a rotating motor arranged on the vertical moving frame, and the driving end of the rotating motor is provided with a positioning portion matched with the positioning groove; the positioning groove is in a non-circular shape, the positioning groove is in a triangular or quadrilateral shape, and the upper end of the positioning portion is provided with a chamfer in a reduced diameter; S1: the moving device drives the ink barrel to sequentially pass through the feeding device, the stirring device and the detection device; S2: the control device controls the feeding device to convey a predetermined amount of ink of a predetermined formula into the ink barrel through each mother bottle; S3: the stirring device stirs the ink in the ink barrel to a predetermined mixing degree; S4: the detection device detects the ink color of the ink barrel and judges whether the ink color meets the predetermined requirements; when the detection does not meet the predetermined requirements, the moving device drives the ink barrel to move to the feeding device, the control device controls the pump body to add a predetermined amount of ink color mother, and then the ink barrel moves to the stirring device again; the detection method in S4 comprises the following steps: ①the ink barrel and the detection device are located in a dark environment without external light; ②the detection device comprises a light source and a camera matched with the light source; ③the light source emits predetermined light to irradiate the ink in the ink barrel, and the camera photographs the ink irradiated with the light and obtains a plurality of detection object pictures; ④the detection object pictures decompose the color into detection object color pixel values, and the detection object color pixel values are analyzed into a detection object CIELAB color difference map by a computer; ⑤the detection device is provided with a standard CIELAB color difference map; The CIELAB color difference atlas comprises column coordinates L*, brightness a*, and chromaticity coordinate b* axes; The CIELAB color difference atlas of the detection object is compared with the standard CIELAB color difference atlas one by one through multiple detection object pictures, and parameter value ranges, color difference ranges, and light influence factors are considered; Then, it is judged whether the un-solidified ink meets the standard value.

2. The printed ink detection method of claim 1, wherein: The CIELAB color difference atlas of the detection object is formed by removing or correcting interference factors through a computer; The interference factors include reflection values, light source angle values, and light source types; The CIELAB color difference atlas of the detection object is compared with the standard CIELAB color difference atlas, and then first data is obtained; Then, the CIELAB color difference atlas is compared with the standard CIELAB color difference atlas, and second data is obtained.

3. The printed ink detection method of claim 1, wherein: The light source is a point light source, a surface light source, a coaxial light source, or a dome light source; The coaxial light source and the dome light source are used at the same time.

4. The printed ink detection method of claim 1, wherein: The light source and the camera can adjust the relative angle, and then pictures of the detection object at different angles are obtained.

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