A flexible color mapping method

Abstract

The present application belongs to the field of automobile technology, and particularly relates to a flexible color matching method. The method comprises controlling a color matching process path and controlling a color matching spraying program, wherein a flag bit representing the spraying number is defined in a vehicle body code body information before the color matching process path is controlled and the color matching spraying program is controlled. The present application can automatically judge and control, realize automatic identification of the color and process path of a color matching single color vehicle, improve the production efficiency of a color matching vehicle body in a painting workshop, and ensure the quality of the vehicle body.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automobile technology, in particular to a flexible color matching method. BACKGROUND

[0002] With the development of automobile industry, people's requirements for the quality of automobiles are getting higher and higher; among them, the appearance of the vehicle body is an important part, and the precision requirement for the color of the vehicle body is also increasing.

[0003] The color matching personalized painting of the vehicle body has become an important means to improve the charm of the whole vehicle and increase the benefit in the international market. However, the process of color matching vehicle body is relatively complex, and in the production process, it often needs to enter different process areas for multiple times of spraying and manual operation. These processes usually adopt manual intervention mechanical path and manual color code change to organize production. This way is low in efficiency, high in error rate, easy to cause equipment failure, produce stop, and may also cause problems such as spraying wrong color and causing vehicle body repair, which affects the production efficiency and the quality of the vehicle body. SUMMARY

[0004] In order to solve the above problems, the present application provides a flexible color matching method, which can automatically judge and control, realize automatic identification of color and process path of color matching and single color vehicle, improve the production efficiency of color matching vehicle body in the painting workshop, and ensure the quality of the vehicle body.

[0005] The technical scheme of the present application is explained as follows in combination with the drawings:

[0006] The present application provides a flexible color matching method, which includes controlling the process path of color matching and controlling the spraying program of color matching, wherein a flag bit representing the spraying number is defined in the body code information before controlling the process path of color matching and controlling the spraying program of color matching.

[0007] Further, in the flag bit, 1 represents the first spraying, 2 represents the second spraying, and a program is set in the specified conveying equipment read-write station, the spraying number flag bit information of the vehicle body is added by 1, and the latest spraying state of the vehicle body is updated.

[0008] Further, the specific method for controlling the process path of color matching is as follows:

[0009] Four kinds of production information are given in the body sled code body;

[0010] A read-write station is installed on the equipment involving path shunt selection in the mechanical path in the workshop, when the vehicle body sled reaches the conveying equipment provided with the read-write station, the path is judged according to the four kinds of production information in the code body, and the equipment automatically operates according to the specified process path;

[0011] The device PLC program is displayed on the host computer picture of the central control system, can be edited, and the modification of the process path control logic is realized by inputting production information.

[0012] Further, the four kinds of production information include a vehicle body type, vehicle model information, color information and spraying times.

[0013] Further, the color information is a 4-digit alphanumeric combination, and the first two digits represent one color, and if the first two digits and the last two digits are the same, it represents that the vehicle is a single color vehicle, and if the first two digits and the last two digits are different, it represents that the vehicle is a color-matching vehicle.

[0014] Further, the spraying times first color spraying default flag is set to 1 before the first spraying, and the spraying times +1 is 2 after the first spraying after drying.

[0015] Further, the device related to the shunt selection includes a roller bed, a rotary table, a horizontal moving machine and a vehicle body three-dimensional warehouse.

[0016] Further, the specific method for controlling the color-matching spraying program is as follows:

[0017] When the vehicle body skid enters before spraying, the robot PLC system communicates with the conveying PLC system, judges according to three kinds of production information, sends the corresponding spraying program to the spraying robot, and calls the corresponding color brush table;

[0018] Through communication with the conveying PLC system, the robot PLC system obtains the production information, first judges whether it is a color-matching vehicle, then judges the color of the vehicle this time through the spraying times, and in addition, a color-matching color and color-matching type retrieval library is configured in the robot PLC program, the color-matching type of the vehicle is judged according to the four color codes;

[0019] According to whether it is color-matching, different program numbers are sent to the robot according to which color-matching, so as to realize independent control of the spraying track and parameter program.

[0020] Further, the three kinds of production information include a vehicle body type, color information and spraying times.

[0021] Further, whether it is a color-matching vehicle is judged according to whether the first two digits and the last two digits in the color information are different, and if they are different, it is determined to be a color-matching vehicle.

[0022] The beneficial effects of the present application are:

[0023] 1) The present application can realize automatic identification of color and process path of color-matching and single color vehicles, improve the production efficiency of color-matching vehicle bodies in the painting workshop, and ensure the quality of vehicle bodies;

[0024] 2) The present application can flexibly adjust the color-matching process of vehicle bodies without additional hardware facilities. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the process path for color matching;

[0027] Figure 2 A schematic diagram of a multi-color spraying process;

[0028] Figure 3 This is a schematic diagram of the process flow provided in Example 2;

[0029] Figure 4 A diagram showing the vehicle body entering the masking chamber before the main color paint is applied and the overlay color paint is applied.

[0030] Figure 5 A schematic diagram of the interface for customizing body colors by grouping the topcoat. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. (A2)

[0033] Example 1

[0034] This invention provides a flexible color matching method, which includes controlling the color matching process path and controlling the color matching spraying procedure. Before controlling the color matching process path and the color matching spraying procedure, a flag bit is defined in the vehicle body code information to represent the number of spraying times.

[0035] Wherein, 1 represents the first spraying, 2 represents the second spraying, and the program is set in the designated conveying equipment read-write station, the spraying number flag information of the vehicle body is added by 1, the latest spraying state of the vehicle body is updated, and the subsequent process path and spraying program are judged and selected.

[0036] A, refer to Figure 1 The specific method of controlling the process path of color matching is as follows:

[0037] A1) Four kinds of production information are given in the vehicle body skid load code body; the four kinds of production information include vehicle body type, vehicle type information, color information, and spraying number;

[0038] The color information is a 4-digit alphanumeric combination, the first two digits represent one color, and if the first two digits and the last two digits are the same, it represents that the vehicle is a single color vehicle, and if the first two digits and the last two digits are different, it represents that the vehicle is a color-matching vehicle. For example, 3J8S, wherein 3J represents white, 8S represents black, and 3J8S represents a white vehicle with a black roof color-matching vehicle body.

[0039] The spraying number flag is set to 1 by default before the first color spraying, and the spraying number is increased by 1 to 2 after the first spraying and drying.

[0040] A2) Install read-write stations on roller beds, rotary tables, transverse moving machines, and vehicle body three-dimensional libraries and other conveying units involved in path diversion selection in the workshop mechanized path. When the vehicle body skid reaches the conveying equipment with the read-write station, the path is judged according to the four kinds of production information in the load code body, and the equipment automatically operates according to the specified process path;

[0041] Wherein, the device PLC program is set in the host computer picture of the central control system, which can be edited, and the modification of the process path control logic is realized by inputting production information, and is imported with new vehicle models.

[0042] B, refer to Figure 2 The specific method of controlling the spraying program of color matching is as follows:

[0043] B1) Before the vehicle body skid enters the spraying, the robot PLC system communicates with the conveying PLC system, judges according to three kinds of production information, sends the corresponding spraying program to the spraying robot, and calls the corresponding color brush table; the three kinds of production information include vehicle body type, color information, and spraying number.

[0044] B2) Through the communication with the conveying PLC system, the robot PLC system obtains the production information, first judges whether it is a color matching vehicle, then judges the color of the vehicle in this spraying through the spraying times, and additionally, a color matching color and color matching type retrieval library is configured in the robot PLC program, and the color matching type of the vehicle is judged according to the four-bit color code; wherein, whether it is a color matching vehicle is judged according to whether the first two bits and the last two bits in the color information are different, and if they are different, it is determined to be a color matching vehicle.

[0045] B3) According to whether color matching, which type of color matching sends different program numbers to the robot, realizes independent control of the spraying track and parameter program, such as single-color vehicle sending No. 9 program, color matching type 1 sending No. 19 program, and color matching type 2 sending No. 29 program. By using this function, multiple independent programs can be flexibly sent to the robot, so that the robot can complete spraying in different areas. In addition, the spraying brush table in this mode is also independent, and can be optimized according to the spraying construction characteristics of color matching.

[0046] Embodiment two

[0047] Taking the production and application of a double-color vehicle in a coating workshop as an example:

[0048] Firstly, the double-color vehicle production includes the following process flow, which are in turn pretreatment electrophoresis, electrophoresis drying, PVC glue coating, middle coating spraying, middle coating drying, reverse shielding, main color paint spraying, flash drying, clear paint spraying, drying, first pass polishing, unloading shielding, color matching shielding, color matching paint spraying, flash drying, clear paint spraying, drying, shielding removal, and finishing.

[0049] According to the on-site process design, before the main color paint spraying and the color matching paint spraying, the vehicle body needs to enter the shielding room for reverse shielding and color matching shielding, respectively. In addition, some vehicle models and color matching processes do not need reverse shielding, and single-color vehicles do not enter the shielding room and directly enter the spraying line for spraying, as shown in Figure 4 .

[0050] Figure 3 is a process flow diagram provided by the embodiment of the application.

[0051] According to the on-site process layout, taking the case of the process flow P5, P6 to P7 and P14 to P15 two path judgment conditions as an example, the process path selection setting scheme is as follows:

[0052] 1. The vehicle body passes through 075RB each time, judges whether it is a color matching vehicle, and judges whether it meets the shielding room path condition;

[0053] 2. The vehicle body meeting the shielding room path condition goes to the 075TC position shielding room;

[0054] 3. For car bodies that do not meet the conditions for the de-shading path, 075TC will proceed to positions 3 and 4 of the marshalling yard according to the original logic.

[0055] According to the design method of the present invention, it is implemented according to the following scheme:

[0056] Judgment logic: An enumeration method is used as the fast selection algorithm. The steps are: a) Select the order type rule; b) After rule a is determined, configure the vehicle model, color, and number of color combinations. Figure 5 Chinese example:

[0057] 1. Orders of type 1, 4, 8, and 9 will be evaluated, while other order types will not be evaluated and will go directly to warehouse number 5.

[0058] 2. Example 1: The order type must be 1 or 4, the vehicle model is DB, the color code is 1G1H, and the number of color matching times is set to 123. This means that if the number of color matching times for this vehicle is equal to 2, it will go to the masking station; otherwise, it will go to the marshalling yard. Note: Other configuration data follow the same logic and will not be repeated.

[0059] Similarly, the path selection from P10 to P11 or P13 can also use the same control mode.

[0060] The following is an example of the application of the color-coating spraying program control mode:

[0061] The color and color type search library should be configured according to the information in the table below:

[0062]

[0063] The relationship between color type and program number retrieval is as follows:

[0064]

[0065]

[0066] The incoming vehicle information shows the vehicle model as HS, color as 3S2J, and paint stroke count as 1. First, based on the vehicle model information HS, the main paint program for this model is program 1. The color 3S2J indicates the vehicle is a two-tone vehicle, with two-tone type 1, and the paint program is program 11. The paint stroke count of 1 indicates the first coat of two-tone paint, with the paint color being 3S. Based on the color and the above-mentioned criteria, the robot queue information for this vehicle is determined to be the first coat of two-tone paint on the HS model, applying Qingchuan White. Program 11 is then called, and the brush table is 1101. This achieves automatic identification and control of the two-tone vehicle's program and color.

[0067] In summary, the present application adds one flag bit in the sled load code body, records the spraying times of the vehicle body, and uses the drying furnace outlet specific position conveying equipment read-write station to add 1 to the vehicle body each time the vehicle body passes through the spraying line and the drying furnace, so as to update the spraying times of the vehicle body, which is used for subsequent process path judgment and robot spraying program judgment.

[0068] The present application uses four kinds of production information, i.e., the vehicle body type, the vehicle model information, the color information and the spraying times, to judge in the conveying equipment PLC at the path branch, automatically identifies and controls the vehicle body conveying path, and realizes the display and the editable program setting function in the central control host computer picture, so as to realize the flexible setting function of the new vehicle model and the new color import.

[0069] The present application realizes the automatic identification of the vehicle model, the color, the color matching type and the spraying times through the rule setting of the robot PLC, can realize the separate control of the spraying program and the spraying parameter according to the color matching type through the simple four-bit color code, can flexibly send multiple independent programs to the robot to make the robot complete the spraying of different areas, and the spraying brush table in this mode is also independent, can be optimized according to the spraying construction characteristics of the color matching, and can be optimized according to the specified position.

[0070] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the implementation mode. It can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized. Therefore, the present application is not limited to the specific details and the figures shown and described herein without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A method of flexographic inking, characterized by The application relates to a control method for a process path and a spraying program of color matching, wherein a flag bit representing spraying times is defined in a body code before the control of the process path and the spraying program of color matching. The specific method for controlling the process path of color matching is as follows: Four kinds of production information are given in a body code of a body skid. A read-write station is installed on a device related to path diversion selection in a mechanical path in a workshop, when the body skid reaches the conveying device provided with the read-write station, path judgment is carried out according to the four kinds of production information in the body code, and the device automatically operates according to the designated process path. The PLC program of the device is displayed on the host computer picture of the central control system, can be edited, and the modification of the process path control logic is realized by inputting the production information. The specific method for controlling the spraying program of color matching is as follows: Before the body skid enters the spraying area, the robot PLC system communicates with the conveying PLC system, judges according to three kinds of production information, sends corresponding spraying programs to the spraying robot, and calls corresponding color brush tables. After the robot PLC system obtains the production information through the communication with the conveying PLC system, whether the body skid is color matching is first judged, the color of the current spraying of the body skid is judged through the spraying times, a color matching color and color matching type retrieval library is configured in the robot PLC program, the color matching type of the body skid is judged according to four color codes, different program numbers are sent to the robot according to whether the body skid is color matching and which color matching, and independent control of spraying tracks and parameter programs is realized. In the flag bit, 1 represents the first spraying, 2 represents the second spraying, a program is set in the designated conveying device read-write station, the spraying time flag bit information of the body skid is added by 1, and the latest spraying state of the body skid is updated. The four kinds of production information include body type, vehicle type information, color information and spraying times.

2. The method of claim 1, wherein, The color information is a 4-digit combination of letters and numbers, the first two digits represent one color, and the last two digits represent another color; if the first two digits are the same as the last two digits, the body skid is a single-color body skid; if the first two digits are different from the last two digits, the body skid is a color matching body skid.

3. The method of claim 1, wherein, The spraying times are set to 1 by default before the first color spraying, the spraying times are added by 1 to 2 after the first spraying and drying.

4. The method of claim 3, wherein, The device related to path diversion selection includes a roller bed, a rotary table, a horizontal moving machine and a body three-dimensional warehouse.

5. The method of claim 3, wherein the method further comprises: The three kinds of production information include body type, color information and spraying times.

6. The method of claim 1, wherein, ​ 7. The method of claim 1, wherein the method further comprises: ​

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