JP6985281B2 - Computer-readable media including paint compounding data providing device, paint compounding data providing method, paint compounding data providing program, and paint compounding data providing program - Google Patents

Description

The present invention relates to a computer-readable medium including a paint blending data providing device, a paint blending data providing method, a paint blending data providing program, and a paint blending data providing program.
The present application claims priority based on Japanese Patent Application No. 2016-201084 filed on October 12, 2016, the contents of which are incorporated herein by reference.

When repair painting the outer panel of an automobile, the paint is adjusted (color toned) so that the color of the part to be painted matches the surrounding color (target color). The toning of the paint is an operation of matching the paint color obtained by painting the paint with the target color.

To determine the paint mix in toning, a paint mix system that can calculate the paint mix is used. The paint blending system has, for example, a database in which optical data obtained by measuring a paint color with an optical sensor (hereinafter referred to as "color measurement data") and paint blending data (hereinafter referred to as "blending data") are associated with each other. Have. The optical sensor is, for example, a spectrophotometer that measures the spectral reflectance of a coating film as optical data. The paint blending system makes the blending data searchable based on the color measurement data around the repair site measured by the operator. The worker mixes the primary color paint and the like and mixes the paint for painting based on the blending data searched by the color measurement data.

The paint blending system calculates the blending data based on the blending data and the difference of the optical data approximated to the color measurement data. The operator paints the panel for test painting (hereinafter referred to as "painting board") with the paint blended based on the calculated blending data. If there is a visual difference between the paint color of the paint plate and the target color, the operator acquires the color measurement data of the paint plate and recalculates the blending data based on the difference from the target color using the paint blending system. .. The worker mixes the paint with the recalculated blending data and paints the coated board. A paint is prepared and painted with the blend obtained from the paint blending system, and when the difference from the target color is large compared to the target color, the color measurement data of the painted plate is transmitted to the paint blending system for new. The work of obtaining the formulation is repeated until the color of the paint color obtained by painting matches the target color (see, for example, Patent Document 1 or Patent Document 2).

Japanese Patent Application Laid-Open No. 2007-314772 Japanese Patent Application Laid-Open No. 2010-2421818

However, if the difference between the color measurement data registered in the database and the target color is large, the amount of correction of the compounding data will be large, and the accuracy (color matching accuracy) at which the target color and the paint color will match will decrease. There was a case. The toning accuracy can be determined, for example, visually or by the magnitude of the difference in the color measurement data. When the color matching accuracy is lowered, the number of repetitions of the color matching work of blending the paint, creating the coated plate, and acquiring the color measurement data is increased, and the work efficiency may be lowered.

In addition, if there is a mistake in the blending of the paint or the painting work by the worker, the number of repetitions of the toning work may increase. For example, if the atomization method of the coating gun is selected incorrectly, the atomized fine particles may differ, which may affect the coating film.

Furthermore, since painting is affected by the user's painting environment such as the condition of the painting equipment and temperature and humidity, the color measurement data of the coated plate is not stable even if the paint with the same composition data is used, and the toning accuracy deteriorates. was there.

In view of the above circumstances, the present invention is a computer including a paint blending data providing device, a paint blending data providing method, a paint blending data providing program, and a paint blending data providing program, which can improve color matching accuracy and work efficiency. The purpose is to provide readable media.

In order to solve the above problems, the paint blending data providing device according to the first aspect of the present invention uses an optical sensor to obtain the blending data of the paint and the coating color obtained by painting the blended paint based on the blending data. A compounding data storage unit that stores the measured color measurement data in association with each other, a target color measurement data acquisition unit that acquires the target color measurement data obtained by measuring the target color with the optical sensor, and the acquired target color. A compounding data search unit that searches for the stored compounding data based on the color measurement data, a candidate color output unit that outputs a candidate color based on the searched compounding data, and a compounding based on the output compounding data. The candidate color measurement data acquisition unit that acquires the candidate color measurement data obtained by measuring the coating color obtained by painting the paint of the candidate color with the optical sensor, the acquired candidate color measurement data, and the target. Whether the difference between the compounding data correction unit that corrects the output compounding data based on the difference from the color measurement data and the modified color output unit that outputs the corrected compounding data is out of a predetermined range. It includes a difference determination unit for determining whether or not the difference is out of the predetermined range, and an alert notification unit for notifying an alert when the difference is out of a predetermined range .

In the paint blending data providing device according to the first aspect of the present invention, the paint color obtained by painting the modified color paint blended based on the output modified blending data was measured by the optical sensor. The modified color measurement data acquisition unit for acquiring the modified color measurement data is further provided, and the compounding data correction unit is output based on the difference between the acquired modified color measurement data and the target color measurement data. The modified compounding data may be re-corrected, and the modified color output unit may output the re-corrected compounding data.

In the paint blending data providing device according to the first aspect of the present invention, the blending data correction unit acquires information related to coating conditions, and further corrects the output blending data based on the acquired information. You may.

In order to solve the above problems, in the paint blending data providing method according to the second aspect of the present invention, the computer used in the paint blending data providing device uses the paint blending data and the paint blended based on the blending data. The paint color obtained by painting is stored in association with the color measurement data measured by the optical sensor (blending data storage step), and the target color measurement data measured by the optical sensor is acquired (target color). Color measurement data acquisition step), search the stored combination data based on the acquired target color measurement data (formulation data search step), and output candidate colors based on the searched combination data (candidate). (Color output step), the candidate color measurement data obtained by measuring the coating color obtained by painting the paint of the candidate color blended based on the output blending data with the optical sensor is acquired (candidate color measurement data). (Acquisition step), based on the difference between the acquired candidate color measurement data and the target color measurement data, the output combination data is corrected (formulation data correction step), and the corrected combination data is output. in and (revised color output step), wherein the difference is equal to or outside the predetermined range, the difference notifying an alert when it is out of the predetermined range, the coating formulation data providing method for executing a process be.

In order to solve the above problems, the paint blending data providing program according to the third aspect of the present invention uses an optical sensor to obtain paint blending data and a paint color obtained by painting the blended paint based on the blending data. The compounding data storage process that stores the measured color measurement data in association with each other, the target color measurement data acquisition process that acquires the target color measurement data obtained by measuring the target color with the optical sensor, and the acquired target color. The compounding data search process for searching the stored compounding data based on the color measurement data, the candidate color output process for outputting the candidate color based on the searched compounding data, and the compounding based on the output compounding data. Candidate color measurement data acquisition processing for acquiring candidate color measurement data obtained by measuring the coating color obtained by painting the paint of the candidate color with the optical sensor, and the acquired candidate color measurement data and the target. Whether the difference between the compounding data correction process for correcting the output compounding data based on the difference from the color measurement data and the modified color output process for outputting the corrected compounding data is out of a predetermined range. The computer is made to execute a difference determination process for determining whether or not the difference is made and an alert notification process for notifying an alert when the difference is out of a predetermined range.

In order to solve the above problems, a computer-readable medium including the paint blending data providing program according to the fourth aspect of the present invention is a coating obtained by painting a paint blending data and a paint blended based on the blending data. Combination data storage processing that stores colors in association with color measurement data measured by an optical sensor, target color measurement data acquisition processing that acquires target color measurement data measured by the optical sensor, and acquisition. A compounding data search process for searching the stored compounding data based on the target color measurement data, a candidate color output process for outputting a candidate color based on the searched compounding data, and the output compounding. Candidate color measurement data acquisition processing to acquire candidate color measurement data obtained by painting the paint of the candidate color blended based on the data and measuring the paint color obtained by the optical sensor, and the acquired candidate color measurement Based on the difference between the color data and the target color measurement data, the combination data correction process for correcting the output combination data, the correction color output process for outputting the corrected combination data, and the difference are predetermined. It includes a paint blending data providing program for causing a computer to execute a difference determination process for determining whether or not the difference is out of the range and an alert notification process for notifying an alert when the difference is out of a predetermined range.

According to the aspect of the present invention, the paint blending data providing device, the paint blending data providing method, the paint blending data providing program, and the paint blending data providing program, which can improve the accuracy and work efficiency of the toning process, are included. Computer readable media can be provided.

It is a functional block diagram which shows an example of the structure of the paint compounding data providing system which concerns on embodiment of this invention. It is a flowchart which shows an example of the operation of the compounding data search process of the paint compounding data providing apparatus which concerns on embodiment of this invention. It is a flowchart which shows an example of the operation of the compounding data correction processing of the paint compounding data providing apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the alert which is notified from the paint compounding data providing apparatus which concerns on embodiment of this invention.

Hereinafter, the paint blending data providing device, the paint blending data providing method, and the paint blending data providing program in one embodiment of the present invention will be described in detail with reference to the drawings.

First, the configuration of the paint blending data providing system for toning the paint will be described with reference to FIG. 1. FIG. 1 is a functional block diagram showing an example of the configuration of a paint compounding data providing system according to an embodiment of the present invention.

In FIG. 1, the paint blending data providing system 1 includes a paint blending data providing device 10, an optical sensor 21, an input device 22, a display device 23, a speaker 24, a printer 25, a painting device 26, a thermohygrometer 27, and a measuring device 28. Has each device. The paint compounding data providing system 1 is connected to the server 3 via the network 9. FIG. 1 shows a case where the paint compounding data providing device 10 and each of the above devices are communicably connected by wire or wirelessly. The paint compounding data providing device 10 and each of the above devices may be connected and communicated via, for example, a network. Further, any of the above-mentioned devices may exist independently without being communicably connected to the paint compounding data providing device 10. That is, the configuration of the paint blending data providing device 10 and each function shown in FIG. 1 does not limit the connection form and the installation location between the paint blending data providing device 10 and each device. For example, when the paint compounding data providing device 10 and each device are connected via a network, each of the above devices may be connected to the paint compounding data providing device 10 via a terminal device (not shown). Further, when the paint compounding data providing device 10 is not connected to each device, data may be exchanged via, for example, a recording medium. In addition, the data acquired by each device is manually input from the terminal device and transmitted to the paint compounding data providing device 10, or the data transmitted from the paint compounding data providing device 10 is displayed on the terminal device and manually. It may be input to each device.

The optical sensor 21 is a sensor that acquires color measurement data obtained by measuring the color of an object. In the present embodiment, the optical sensor 21 exemplifies a spectrophotometer that measures a color around a portion to be repaired, which will be described later, or a paint color obtained by painting a paint adjusted with a predetermined composition. The optical sensor 21 used in the present embodiment uses monochromatic light every 10 nm in the wavelength range of 400 to 700 nm of the light source, and spectroscopically reflects the intensity of the reflected light from the painted surface among the examined light with a photodiode. Measure the rate. The optical sensor 21 measures the intensity of the reflected light with respect to the incident light depending on the light receiving angle. The optical sensor 21 incidents the incident light at an incident angle of −45 ° when the vertical direction from the painted surface is 0 °. The reflected light at an angle of 45 ° when the vertical direction from the painted surface is 0 ° is specular. The light receiving angle is set based on the angle of this specular reflection. The light receiving angle is 5 angles of 15 °, 25 °, 45 ° (vertical direction from the painted surface), 75 °, and 110 ° when the light receiving angle of the specular reflected light is 0 °. Further, a light receiving angle of −15 ° or 105 ° may be used. For example, when the above five angles are used, the highlight in painting is measured at the light receiving angles of 15 ° and 25 °, the face is measured at the light receiving angles of 45 °, and the shade is measured at the light receiving angles of 75 ° and 110 °. The wavelength to be measured and the light receiving angle may be appropriately selected depending on the coating color system of the coating. Further, the light source of the optical sensor 21 may be a light source using a wavelength in the infrared region or an ultraviolet region instead of using the wavelength in the visible region.

The input device 22 is, for example, an input device such as a keyboard, a mouse, and a touch panel. The worker can input information such as the worker name from the input device 22. The display device 23 is, for example, a liquid crystal display, and displays, for example, the blending data of the paint output from the blending data output unit 104, which will be described later, and also displays the alert content notified from the alert notification unit 106. The speaker 24, for example, outputs the alert content notified from the alert notification unit 106 by voice. For example, the printer 25 prints out the blending data of the paint output from the blending data output unit 104, and also prints out the alert content notified from the alert notification unit 106. The input device 22, the display device 23, the speaker 24, or the printer 25 may be implemented by, for example, a tablet terminal or the like.

The painting device 26 is a device for painting an object to be painted such as an automobile. In the following description, a case where the coating device 26 can transmit the attribute (specification) data of the device to the paint compounding data providing device 10 will be described. However, the attribute data of the device may be transmitted from another device, manually input by an operator, or the like. The attribute data of the device is data such as, for example, a coating method such as an atomization method or an electrostatic method, a device model, a nozzle model, a pressurized air pressure, and information on an actuator that operates the nozzle. Further, the user ID may be associated with the attribute data of the device. The painting device 26 is a device for painting the object to be painted while fixing the object to be painted and moving a nozzle for discharging the paint, and a device for painting the object to be painted while fixing the nozzle and moving the object to be painted. , A device for painting the object to be coated while relatively moving both the nozzle and the object to be coated can be used. The coating device 26 can use the coated plate as an object to be coated. The movement of the nozzle or the object to be coated may be performed automatically or manually. In the present embodiment, the case where one painting device 26 is connected to one paint blending data providing device 10 is shown, but a plurality of painting devices 26 may be connected.

The thermo-hygrometer 27 measures the temperature and humidity of the painting booth for painting the object to be painted, the work place for blending the paint, the spectral reflectance measurement place using the optical sensor 21, etc. in the painting device 26, and provides the paint compounding data. Temperature and humidity data is transmitted to the device 10. In the painting booth, the temperature and humidity may affect the finish of the painting and change the painting color. Further, in the spectral reflectance measurement using the optical sensor 21, a measurement error may occur. The transmitted temperature / humidity data can be stored in the compounding data storage unit 107 or the like in association with the compounding information of the paint or the color measurement data by the optical sensor 21, so that the CCS (Computer Color Search) described later can be used. It is useful information in CCM (Computer Color Matching). The temperature / humidity data may be transmitted directly from the temperature / humidity meter 27 to the paint compounding data providing device 10, or may be input from a terminal in which the operator inputs the temperature / humidity.

The measuring device 28 is a dedicated scale for measuring the paint to be blended. The measuring device 28 acquires, for example, blending data indicating the blending ratio of the paint from the paint blending data providing device 10, displays the acquired blending data on a display device (not shown), or prints the acquired blending data from the printing device to output the data. The worker who formulates the paint measures the weight of the paint based on the output blending data and formulates the paint. For example, the operator adjusts the paint to be blended by looking at the blending amount displayed on the measuring device 28. The weighing device 28 may automatically weigh the paint based on the blending data acquired from the paint blending data providing device 10.

The blending amount (blending amount) of the paint weighed in the weighing device 28 is recorded in the weighing device 28 and transmitted to the paint blending data providing device 10 after the weighing work is completed. By transmitting the blended amount of the weighed paint, for example, when the blending data provided by the paint blending data providing device 10 and the blending of the paint actually blended by the operator are different, the difference is detected by the paint blending data providing device. It is possible to feed back to 10.

When the measuring device 28 is a general-purpose scale, the operator blends the paint based on the data printed by the printer 25 and manually inputs the blending result from the input device 22.

The server 29 is, for example, a data server installed in a remote location. The server 29 may supply the program executed by the paint blending data providing device 10 and the data used to the paint blending data providing device 10. Further, the server 29 may acquire the data created by the paint compounding data providing device 10.

The paint compounding data providing device 10 includes a color measurement data acquisition unit 101, a compounding data search unit 102, a compounding data correction unit 103, a compounding data output unit 104, a difference determination unit 105, an alert notification unit 106, and a compounding data storage unit 107. It has a function.

The paint blending data providing device 10 is a general-purpose device such as a desktop PC, a notebook PC, a tablet PC, a PDA, or a smartphone, or a dedicated device for searching paint blending data. The paint compounding data providing device 10 is operated by a CPU (Central Processing Unit) (not shown) executing a program stored in a RAM (Random Access Memory), a ROM (Read Only Memory), or an HDD (Hard Disk Drive). can do. That is, each of the above-mentioned functions of the color measurement data acquisition unit 101 of the paint compounding data providing device 10 can be realized by software (program) executed by the paint compounding data providing device 10. Each of the above functions of the color measurement data acquisition unit 101 and the like can be provided on a recording medium (computer-readable medium) on which the program is recorded. Further, the paint compounding data providing device 10 has an interface for communicably connecting the optical sensor 21, the input device 22, and the like shown in FIG. 1.

The color measurement data acquisition unit 101 acquires the color measurement data measured by the optical sensor 21. The color measurement data acquisition unit 101 has an acquisition unit according to the type of measured color measurement data. In the present embodiment, the color measurement data acquisition unit 101 includes a target color measurement data acquisition unit 1011, a candidate color measurement data acquisition unit 1012, and a modified color measurement data acquisition unit 1013. The target color measurement data acquisition unit 1011 acquires the target color measurement data (target color measurement data) of the paint to be blended. The target color is, for example, the paint color of the vehicle to be repaired. The target color measurement data acquisition unit 1011 acquires and stores the target color measurement data measured by the optical sensor 21 for the paint color around the repaired portion of the vehicle to be repaired. The candidate color measurement data acquisition unit 1012 measures the candidate color measurement data (candidate color measurement) in which the coating color obtained by painting the compounded paint based on the compounding data output as the candidate color is measured by the optical sensor 21. Data) is acquired and stored. The correction color measurement data acquisition unit 1013 measures the correction color by measuring the coating color obtained by painting the correction color paint prepared based on the correction combination data output as the correction color with the optical sensor 21. Acquires and stores color data (corrected color measurement data). The correction color measurement data acquisition unit 1013 acquires the correction color measurement data each time until it is confirmed by the operator's visual inspection that the paint color obtained by applying the correction color paint matches the target color. .. As described above, the colorimetric data is the spectral reflectance data measured for each wavelength and each reflection angle. The color measurement data may be data converted into a predetermined color space.

The compounding data search unit 102 searches the compounding data recorded in the compounding data storage unit 107 based on the colorimetric data acquired by the target color measurement data acquisition unit 1011. The compounding data is data on the compounding ratio of the materials contained in the paint. Here, the paint blended in this embodiment will be described.

The paint contains a pigment that forms the color of the paint and a component of a color-developing material (vehicle). The pigments include colored pigments that determine the color of the coating, extender pigments that add thickness to the coating, and functional pigments that provide functions such as rust prevention and brilliance. In the vehicle, the resin that is the main factor that determines the performance such as weather resistance, flexibility or water resistance of the coating film, the additive added according to the purpose of coating, or the paint is diluted and volatilized at the time of forming the coating film. Contains diluents such as water and organic solvents. Additives include, for example, rheology control agents for adjusting the fluidity of paints, and surface conditioners used for defoaming and improving leveling properties.

In the case of paint toning for automobile repair paints (solvent-based), color-based paints (including colored pigments), pearl-based paints (including glitter pigments), aluminum-based paints (including aluminum flake pigments), gloss adjustment paints. It is adjusted by combining (including a gloss adjuster), a curing agent (including a plurality of curing agents), or a solvent (including a quick-drying type or a slow-drying type). Further, in the white paint, toning is performed by adding a high-concentration pigment paste.

In the toning of the paint, a primary color paint containing the above-mentioned various components is prepared, and the primary color paint is appropriately blended (mixed). Primary color paints include paints such as red, yellow, blue, green, black, red rust, ocher, and white. Toning for automobile repair is performed, for example, by adding a coloring pigment paste or a brilliant pigment previously mixed with a solvent to enamel clear, which is a transparent paint containing no pigment.
The blending data storage unit 107 stores the blending data of the paint and the color measurement data when the paint blended (blended) based on the blending data is applied in association with each other. In the following description, the formulation of the primary color paint will be mainly described, and the description of the toning of other components will be omitted.

The compounding data search unit 102 approximates the target color measurement data measured by the optical sensor 21 as a search condition from the color measurement data stored in association with the compounding data in the compounding data storage unit 107. Search for existing data (CCS). The target color measurement data is data obtained by measuring the color of an object to be coated, which is coated with a paint blended by a sample blending data by a standard painting method, with an optical sensor. Therefore, the number of color measurement data stored in advance in the compounding data storage unit 107 is the number corresponding to the number of samples. By increasing the number of samples with different compounding data, it is possible to prepare color measurement data closer to the target color measurement data in advance. In CCS, it is possible to instantly search for compounding data having approximate color measurement data from a large number of samples. In the present embodiment, color measurement data is prepared in advance for a sample of compounding data considering the frequency of use for painting, and data close to the target color measurement data is searched from the color measurement data. The approximation of the color measurement data is, for example, data in which the parameters in a predetermined color space are approximated. Therefore, the target color measurement data may approximate a plurality of color measurement data stored in advance. The compounding data search unit 102 searches for one or a plurality of color measurement data that match a predetermined approximation condition, and acquires the compounding data of the approximate color associated with the searched color measurement data. The search conditions for the compounding data can be set arbitrarily. For example, the parameter range, the number of searches, and the like can be set as search conditions. Further, the search condition may be a condition such as a usable primary color paint.

The compounding data correction unit 103 determines whether or not there is a difference of a predetermined value or more between the target color measurement data and the color measurement data of the approximate color, and if there is a difference of the predetermined value or more, fine adjustment is performed using the approximate color as a base point. Generate color-corrected formulation data (CCM). Since the color measurement data recorded in advance in the compounding data storage unit 107 is a sample, the target color measurement data acquired by the target color measurement data acquisition unit 1011 and the approximate color searched by the compounding data search unit 102. There may be a difference from the color measurement data of. If the difference is greater than or equal to a predetermined value, the compounding data corrected for fine toning becomes the initial compounding data. On the other hand, when the difference is less than a predetermined value, the compounding data correction unit 103 does not correct the compounding data, so that the searched approximate color becomes the initial compounding data.

The compounding data correction unit 103 corrects the compounding data with reference to the basic data of each of the colored paints based on the difference in the color measurement data. The basic data is, for example, the coloring power of each primary color of the paint. Coloring power refers to the size that can be colored in the paint color with a certain amount of primary color paint. The primary colors of black and navy blue have great coloring power because they can color the color of the paint even if a small amount is added. On the other hand, the primary yellow color has a small coloring power because it is difficult to color the paint color even if a considerable amount is added. The compounding data correction unit 103 can correct the compounding data based on the difference in the color measurement data and the coloring power of the color of the primary color paint to be compounded. The coloring power is not the coloring power with respect to the color of the paint, but the coloring power with respect to the color of the dry coating film. Further, the coloring power differs depending on the material of the base and the hiding power of the base of the primary color paint. The compounding data correction unit 103 may correct the compounding data including these factors.

The compounding data correction unit 103 may correct the compounding data by multiplying the basic data of each of the colored paints by a coefficient corresponding to the actual result of the user based on the difference in the color measurement data. The coefficient corresponding to the user's performance is, for example, a coefficient indicating a tendency of correction obtained from the correction record of the combination data in the combination data correction unit 103. For example, the type of equipment such as a painting device, the painting environment, and the like differ depending on the user, and may affect the painting color. In addition, there may be a tendency for the paint color to be preferred by the user. By multiplying the correction tendency obtained from the correction record as a coefficient, it becomes possible to generate compounding data in which these factors are taken into consideration in advance.

Further, the compounding data correction unit 103 determines the difference between the target color measurement data acquired by the target color measurement data acquisition unit 1011 and the candidate color measurement data acquired by the candidate color measurement data acquisition unit 1012. If it is less than the value, based on this difference, the corrected color blending data, which is the blending data of the modified color obtained by adjusting the blending data with the candidate color measurement data as the base point, is generated. That is, the blending data correction unit 103 repeatedly corrects the blending data until it is confirmed by the operator's visual inspection that the paint color obtained by painting the paint of the correction color matches the target color, and the correction color is corrected. To get closer to the target color. The compounding data correction unit 103 may acquire information related to the coating conditions described later and further correct the output compounding data based on the acquired information.

The compounding data output unit 104 outputs the compounding data from the paint compounding data providing device 10. In the present embodiment, the compounding data output unit 104 has a candidate color output unit 1041 and a correction color output unit 1042. The candidate color output unit 1041 outputs the blending data of the approximate color searched by the blending data search unit 102 or the blending generated by the CCM of the blending data correction unit 103 as the first candidate color. As described above, the number of candidate colors can be one or more. For example, when there are a plurality of candidate colors, the candidate color output unit 1041 may output the compounding data by changing the order according to a predetermined condition. The correction color output unit 1042 outputs the combination data corrected by the combination data correction unit 103. The output destination to which the compounding data output unit 104 outputs the compounding data is, for example, a display device 23, a printer 25, a measuring device 28, or the like. The operator prepares a paint by blending the primary colors based on the output blending data, and applies the paint to the coated plate on a trial basis.

The difference determination unit 105 has a difference between the target color measurement data acquired by the target color measurement data acquisition unit 1011 and the candidate color measurement data acquired by the candidate color measurement data acquisition unit 1012 within a predetermined range. Determine if it exists. Further, the difference determination unit 105 determines whether or not the difference between the target color measurement data and the correction color measurement data acquired by the correction color measurement data acquisition unit 1013 is within a predetermined range. Differences in color measurement data are determined, for example, by directly comparing the spectral reflectances of the same light receiving angle. Further, the color difference ΔE * ab due to the L * a * b * color system may be calculated and determined from the spectral reflectance. In the case of a paint color in which the appearance of the color changes depending on the observation angle, ΔE * ab at a plurality of observation angles is calculated and determined. The numerical value of the color difference is not limited to the CIE1976 color difference formula (ΔE * ab). Differences in these color measurement data occur depending on the conditions related to painting (painting conditions). The painting conditions are, for example, the specifications of the device such as the above-mentioned device model, nozzle model, pressurized air pressure, and information on the actuator that operates the nozzle. Further, the painting condition may be an environmental condition such as temperature and humidity of the painting booth. In addition, the painting conditions may include human error of the operator. The human error of the worker includes, for example, a mistake in the primary color paint to be blended, a mistake in the amount of the primary color paint, or a mistake in the amount of the diluent. In addition, human error includes mistakes in the method of applying paint, such as incorrect operation of nozzles. The difference determination unit 105 prepares a plurality of thresholds in advance for the difference between the target color measurement data and the candidate color measurement data, and determines the occurrence of an error related to painting for each threshold. An example of an error that can be determined by the difference determination unit 105 will be described later with reference to FIG. The difference determination unit 105 outputs the determination result to the alert notification unit 106.

The alert notification unit 106 notifies the operator of the determination content determined by the difference determination unit 105. For example, the alert notification unit 106 displays the determination result as text on the display device 23.
Further, the alert notification unit 106 outputs the determination result by voice from the speaker 24. Further, the alert notification unit 106 outputs the determination result to the printer 25 as print data.

As described above, the compounding data storage unit 107 stores the color measurement data and the compounding data in association with each other. The compounding data storage unit 107 can be realized by a non-volatile RAM or a hard disk.

In the above description, the color measurement data acquisition unit 101, the compounding data search unit 102, the compounding data correction unit 103, the compounding data output unit 104, the difference determination unit 105, and the alert notification unit possessed by the paint compounding data providing device 10. The case where each function of 106 and the compounding data storage unit 107 is realized by software software has been described. However, one or more of the above-mentioned functions of the paint compounding data providing device 10 may be realized by hardware. Further, each of the above-mentioned functions of the paint compounding data providing device 10 may be performed by dividing one function into a plurality of functions. Further, each of the above-mentioned functions of the paint compounding data providing device 10 may be implemented by consolidating two or more functions into one function. For example, in the above embodiment, the case where the color measurement data acquisition unit 101 has the target color measurement data acquisition unit 1011, the candidate color measurement data acquisition unit 1012, and the modified color measurement data acquisition unit 1013 has been described. The color measurement data acquisition unit 101 may have all the functions of the target color measurement data acquisition unit 1011, the candidate color measurement data acquisition unit 1012, and the modified color measurement data acquisition unit 1013.

Next, the compounding data search process of the paint compounding data providing device 10 will be described with reference to FIG. FIG. 2 is a flowchart showing an example of the operation of the compounding data search process of the paint compounding data providing device 10 according to the embodiment of the present invention. The processing in FIGS. 2 and 3 is executed by each function of the paint blending data providing device 10 described with reference to FIG. 1, but the following description describes a case where the paint blending data providing device 10 executes.

In FIG. 2, the paint compounding data providing device 10 determines whether or not the color measurement data of the target color has been acquired (step S11). The target color is a target paint color in the paint created based on the compounding data, and is, for example, the paint color of the vehicle to be repaired. The paint compounding data providing device 10 can acquire color measurement data of a target color by an operator measuring the paint of a vehicle with an optical sensor 21. When it is determined that the color measurement data of the target color has not been acquired (step S11: NO), the paint compounding data providing device 10 repeats the process of step S11 and waits for the acquisition of the color measurement data.

On the other hand, when it is determined that the color measurement data of the target color has been acquired (step S11: YES), the paint compounding data providing device 10 is associated with the color measurement data stored in advance based on the acquired color measurement data. Search for compounding data of similar colors (CCS) (step S12).

After executing the process of step S12, the paint compounding data providing device 10 calculates the difference between the acquired color measurement data and the searched approximate color (step S13), and the calculation of the difference in the color measurement data is a predetermined measurement. Perform based on the color measurement data under the conditions. For example, the paint compounding data providing device 10 calculates the difference in spectral reflectance at the same reflection angle of the same wavelength measured by the optical sensor 21.

After executing the process of step S13, the paint compounding data providing device 10 determines whether or not the difference from the calculated color measurement data is equal to or more than a preset set value (predetermined value) (step S14). .. The determination of whether or not the difference is equal to or more than a preset set value is determined by, for example, whether or not the difference in spectral reflectance at a predetermined reflection angle at a predetermined wavelength is equal to or greater than a predetermined value.

When it is determined that the difference is equal to or larger than the preset set value (step S14: YES), the paint compounding data providing device 10 has the color measurement data acquired in the process of step S11 and the approximate color searched in the process of step S12. Based on the difference from the above, the compounding data obtained by finely adjusting the compounding data with the approximate color as the base point is generated (step S15). The fine color adjustment of the compounding data is performed by changing the compounding ratio of the primary color paint. The paint compounding data providing device 10 uses the compounding data corrected for fine color adjustment as the initial compounding data. On the other hand, when it is determined that the difference is less than the preset set value (step S14: NO), the process of step S15 is skipped, and the paint compounding data providing device 10 uses the approximation searched in the process of step S11. The color is used as the initial compounding data. The blending data of the candidate color (approximate color) or the blending data for fine toning correction may be presented to the operator in a selectable manner. For example, the compounding data of the candidate color may include a compounding using a primary color paint not owned by the operator. The paint compounding data providing device 10 enables the operator to select the optimum compounding data by presenting the search results of a plurality of compounding data.

After executing the process of step S15, or when it is determined that the difference is less than the preset set value (step S14: NO), the paint compounding data providing device 10 records the initial compounding data (step S16). .. The recorded compounding data becomes the data of the base point in the modification process of the compounding data described with reference to FIG. After executing the process of step S16, the paint blending data providing device 10 outputs the blending data of the first candidate color (step S17). The process from the acquisition of the color measurement data to the output of the compounding data may be, for example, inseparably processed as a transaction. Further, the processes of steps S11 to S17 may be executed continuously with the processes described with reference to FIG. After executing the process of step S17, the paint compounding data providing device 10 ends the process of the flowchart shown in FIG.

The operator blends the paint based on the initial blending data output in the process described with reference to FIG. 2, and paints the coated plate with the blended paint. The coating of the coated plate is performed by first applying the blended colored paint, then applying the clear paint, and further drying. The painted plate is compared with the paint of the vehicle, which is the target color, by the operator's visual inspection, and when the color match is confirmed by visual inspection, the paint for painting the vehicle is blended based on the blending data.

On the other hand, when the operator cannot visually confirm the match between the coating on the coated plate and the coating on the vehicle, the operator carries out the compounding data correction process described in FIG. 3 below.

Next, the compounding data correction process of the paint compounding data providing device 10 will be described with reference to FIG. FIG. 3 is a flowchart showing an example of the operation of the compounding data correction process of the paint compounding data providing apparatus according to the embodiment of the present invention.

In FIG. 3, in the paint blending data providing device 10, the color measurement data (candidate color measurement data) of the coated plate painted by the operator based on the candidate color blending data output in the process of step S17 shown in FIG. 2 is obtained. It is determined whether or not the data has been acquired (step S21). That is, the compounding data correction process described in the flowchart shown in FIG. 3 is performed after the compounding data search process shown in FIG. The paint compounding data providing device 10 can acquire the color measurement data of the coated plate by the operator measuring the coating of the coated plate with the optical sensor 21. When it is determined that the color measurement data of the coated plate has not been acquired (step S21: NO), the paint compounding data providing device 10 repeats the process of step S21 and waits for the acquisition of the color measurement data.

On the other hand, when it is determined that the color measurement data of the coated plate has been acquired (step S21: YES), the paint compounding data providing device 10 calculates the difference between the acquired target color measurement data and the candidate color measurement data (step). S22). The calculation of the difference in the color measurement data is the same as the process of step S13 shown in FIG.

After executing the process of step S22, the paint compounding data providing device 10 determines whether or not the difference from the calculated color measurement data is equal to or more than a preset set value (step S23). The determination in the process of step S23 is the same as the determination in the process of step S14 shown in FIG. However, in the process of step S23, by determining whether or not the difference is equal to or more than the preset set value, there is an obvious defect related to painting (for example, the composition of the primary color paint is wrong or the amount of the diluent is wrong). It is possible to detect an operator's mistake, such as making a mistake or making a mistake in the painting method). It should be noted that the defects related to painting differ depending on the type of paint such as the paint color system. Defects related to painting to be determined in the process of step S23 have different determination criteria depending on the difference in the coating color system and the like. The details of the defects related to painting will be described later with reference to FIG.

When it is determined that the difference is not equal to or more than the preset set value (step S23: NO), the paint compounding data providing device 10 acquires the candidate color measurement data in the process of step S21 and the step shown in FIG. Based on the difference from the target color measurement data acquired in the process of S11, the compounding data output as the candidate color recorded in the process of step S13 or the compounding data recorded in the process of step S25 described later is corrected (corrected). ) (Step S24). The compounding data is modified by changing the compounding ratio of the primary color paint. The blending data may be modified by changing the blending ratio of additives other than the raw material paint. The modified compounding data may be registered in the compounding data storage unit 107. By registering the correction data, the number of compounding data registered in the compounding data storage unit 107 can be added, so that it is possible to improve the search accuracy when searching for a target color that is approximated next time. It becomes.

After executing the process of step S24, the paint compounding data providing device 10 records the correction result (step S25). The correction result is, for example, a corrected new compounding data, a difference between the modified compounding data and the modified compounding data, and the like. The process of step S25 is executed every time the compounding data is modified in the process of step S24. That is, the final selected formulation data is recorded. As a result, the finally selected formulation data can be used as a search target for the next CCS.

After executing the process of step S25, the paint blending data providing device 10 outputs the corrected blending data (step S26). The operator creates the paint again based on the output compounding data, paints it on the coated plate, and visually confirms the match with the painted vehicle.

On the other hand, when it is determined in the process of step S23 that the difference is equal to or greater than the preset set value (step S23: YES), the paint compounding data providing device 10 uses the alert notification unit 106 shown in FIG. 1 to transmit the alert content. Notify the operator (step S27). The details of the alert to be notified will be described later with reference to FIG.

When it is confirmed that the paint on the painted board painted with the paint created based on the blending data output in the process of step S26 matches the paint on the vehicle, the worker uses the paint created based on the modified blending data to vehicle the vehicle. Paint.

On the other hand, when the coincidence between the coating plate and the coating of the vehicle cannot be visually confirmed, the processes of steps S21 to S27 are repeated, so that the difference in the color measurement data can be gradually converged.

As described above, since the processing described with reference to FIGS. 3 and 4 makes it easy to improve the accuracy of the compounding data and obtain the target color, the number of repetitions from the calculation of the compounding data to the creation of the coated plate is reduced to improve the work efficiency. It will be possible to improve.

Next, with reference to FIG. 4, the alert content notified by the alert notification unit 106 shown in FIG. 1 will be described in the processing of steps S23 and S27 shown in FIG. FIG. 4 is a diagram showing an example of an alert notified from the paint compounding data providing device 10 according to the embodiment of the present invention.

FIG. 4 shows a notification information table that is referred to when an alert is notified. The notification information table is included in the alert notification unit 106. The notification information table has items of "paint color system", "paint", "threshold value", "factor", and "alert content".

The item of "paint color system" includes a paint color system such as silver metallic, gray metallic, and 3-coat pearl. In painting, the problems that occur differ depending on the paint color system. In the process of step S23 shown in FIG. 3, a set value is set for each coating color system to determine a defect related to coating. As the paint color system, for example, one paint color system may be selected by the input device 22 from the list of paint color systems displayed on the display device 23 before the color measurement data is acquired.

The item "paint" is classified in common with water-based. For example, water-based paints have problems unique to water-based paints. The item of "paint" may be selectable in the same manner as the item of "paint color system".

In the item of "threshold value", the threshold value of the color measurement data is set. In FIG. 4, the details are omitted by displaying "A", "B", "C", etc., but for example, the wavelength and the reflection angle. And the threshold value in the combination of spectral reflectances may be set. Further, a threshold value of the painting environment such as temperature and humidity may be set.

"Factors" describes the factors that cause painting defects. The item of "factor" may be notified to the worker in the same manner as the item of "alert content".

The item of "alert content" is a countermeasure against a painting defect. The item of "alert content" is output from, for example, the display device 23 or the printer 25, and informs the operator of the remedy for the problem.

For example, when the paint color system is color clear, the operator selects the color clear as the paint color system for the paint compounding data providing device 10 before measuring the paint of the vehicle with the optical sensor. The paint compounding data providing device 10 determines "L", "M", and "N", which are the threshold values of the color clear, when the color measurement data of the coated plate is acquired. For example, when the threshold value L is satisfied, the paint compounding data providing device 10 determines from the item of "factor" that the coating defect is due to the thin film thickness, and "please increase the number of coatings by one". Display an alert message with. Since the operator can determine whether the cause of the painting defect is a defect of the compounding data or a defect due to the painting work, it is possible to improve the work efficiency.

As described above, the paint compounding data providing device according to the embodiment of the present invention includes a compounding data storage unit, a coloring power storage unit, a color measurement data acquisition unit, a compounding data search unit, a compounding data correction unit, and a compounding data output. By providing the unit, it is possible to improve the color matching accuracy and the work efficiency.

It should be noted that the program for realizing the function constituting the apparatus described in the present embodiment is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into the computer system and executed. Therefore, the above-mentioned various processes of the present embodiment may be performed. The "computer system" here may include hardware such as an OS and peripheral devices. Further, the "computer system" includes the homepage providing environment (or display environment) if the WWW system is used. The "computer-readable recording medium" includes a flexible disk, a magneto-optical disk, a ROM, a writable non-volatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, and the like. Refers to the storage device of.

Further, the "computer-readable recording medium" is a volatile memory inside a computer system that serves as a server or client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line (for example, DRAM (for example, DRAM). It also includes those that hold the program for a certain period of time, such as Dynamic Random Access Memory)). Further, the program may be transmitted from a computer system in which this program is stored in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting a program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Further, the above program may be for realizing a part of the above-mentioned functions. Further, a so-called difference file (difference program) may be used, which realizes the above-mentioned function in combination with a program already recorded in the computer system.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment and includes various changes within the range not deviating from the gist of the present invention. Will be.

1 ... Paint compounding data providing system 3 ... Server 10 ... Paint compounding data providing device 101 ... Color measurement data acquisition unit 1011 ... Target color measurement data acquisition unit 1012 ... Candidate color measurement data acquisition unit 1013 ... Corrected color measurement data acquisition Section 102 ... Blending data search section 103 ... Blending data correction section 104 ... Blending data output section 1041 ... Candidate color output section 1042 ... Correcting color output section 105 ... Difference determination section 106 ... Alert notification section 107 ... Blending data storage section 21 ... Optical Sensor 22 ... Input device 23 ... Display device 24 ... Speaker 25 ... Printer
26 ... Painting equipment 27 ... Thermo-hygrometer 28 ... Measuring equipment

Claims (6)

A blending data storage unit that stores the blending data of the paint in association with the color measurement data obtained by painting the blended paint based on the blended data with an optical sensor.
A target color measurement data acquisition unit that acquires target color measurement data obtained by measuring the target color with the optical sensor, and a target color measurement data acquisition unit.
A compounding data search unit that searches for the stored compounding data based on the acquired target color measurement data, and a compounding data search unit.
A candidate color output unit that outputs a candidate color based on the searched combination data,
A candidate color measurement data acquisition unit that acquires candidate color measurement data obtained by painting a paint of a candidate color blended based on the output blending data with the optical sensor, and a candidate color measurement data acquisition unit.
A compounding data correction unit that corrects the output compounding data based on the difference between the acquired candidate color measurement data and the target color measurement data, and
A modified color output unit that outputs the modified compounding data ,
A difference determination unit that determines whether or not the difference is outside the predetermined range, and
A paint compounding data providing device including an alert notification unit that notifies an alert when the difference is out of a predetermined range. A modified color measurement data acquisition unit that acquires modified color measurement data obtained by painting a paint of a modified color blended based on the output modified blending data with the optical sensor. Further prepare
The compounding data correction unit re-corrects the output modified compounding data based on the difference between the acquired modified color measurement data and the target color measurement data.
The paint compounding data providing device according to claim 1, wherein the modified color output unit outputs the re-corrected compounding data. The paint compounding data providing device according to claim 1 or 2 , wherein the compounding data correction unit acquires information related to coating conditions and further corrects the output compounding data based on the acquired information. The computer used for the paint formulation data providing device
The coating data of the paint and the color measurement data obtained by painting the paint blended based on the blending data with an optical sensor are stored in association with each other.
The target color measurement data obtained by measuring the target color with the optical sensor is acquired, and the target color is acquired.
Based on the acquired target color measurement data, the stored compounding data is searched for.
Candidate colors are output based on the searched combination data, and
The candidate color measurement data obtained by measuring the paint color obtained by painting the paint of the candidate color blended based on the output blending data with the optical sensor is acquired.
Based on the difference between the acquired candidate color measurement data and the target color measurement data, the output compounding data is corrected.
Output the corrected formulation data and output
It is determined whether or not the difference is out of the predetermined range, and the difference is determined.
A method for providing paint compounding data for executing a process, which notifies an alert when the difference is out of a predetermined range. Blending data storage processing that stores the blending data of the paint in association with the color measurement data obtained by painting the blended paint based on the blended data with an optical sensor.
Target color measurement data acquisition processing for acquiring target color measurement data obtained by measuring the target color with the optical sensor, and
A compounding data search process for searching the stored compounding data based on the acquired target color measurement data, and a compounding data search process.
Candidate color output processing that outputs candidate colors based on the searched combination data,
Candidate color measurement data acquisition processing to acquire candidate color measurement data obtained by painting the paint of the candidate color blended based on the output blending data with the optical sensor, and
Based on the difference between the acquired candidate color measurement data and the target color measurement data, the combination data correction process for correcting the output combination data and the combination data correction process.
And revised color output process of outputting the modified the formulation data,
A difference determination process for determining whether or not the difference is outside the predetermined range, and
A paint blending data providing program for causing a computer to execute an alert notification process for notifying an alert when the difference is out of a predetermined range. Blending data storage processing that stores the blending data of the paint in association with the color measurement data obtained by painting the blended paint based on the blended data with an optical sensor.
Target color measurement data acquisition processing for acquiring target color measurement data obtained by measuring the target color with the optical sensor, and
A compounding data search process for searching the stored compounding data based on the acquired target color measurement data, and a compounding data search process.
Candidate color output processing that outputs candidate colors based on the searched combination data,
Candidate color measurement data acquisition processing to acquire candidate color measurement data obtained by painting the paint of the candidate color blended based on the output blending data with the optical sensor, and
Based on the difference between the acquired candidate color measurement data and the target color measurement data, the combination data correction process for correcting the output combination data and the combination data correction process.
And revised color output process of outputting the modified the formulation data,
A difference determination process for determining whether or not the difference is outside the predetermined range, and
A computer-readable medium including a paint formulation data providing program for causing a computer to execute an alert notification process for notifying an alert when the difference is out of a predetermined range.

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