Paint color difference detection device

Abstract

The utility model relates to a paint surface color difference detection device which comprises a movable assembly and a detection assembly, the movable assembly is used for bearing the detection assembly and transporting the detection assembly; the detection assembly is located at the tail end of the movable assembly and comprises a mounting frame, a colorimeter and a range finder; the mounting frame is used for bearing the colorimeter and the range finder and is connected with the movable assembly; the colorimeter is positioned in the center of the mounting frame and is used for detecting the paint surface of the sampling point; the range finder is positioned on the mounting frame and around the colorimeter and is used for detecting the position relationship between the sampling point and the colorimeter; firstly, as the movable assembly and the detection assembly are combined, the movable assembly is utilized to move the detection assembly to an approximate area of a sampling point, then the detection assembly is used for accurately positioning the sampling point, and then the detection assembly is driven to an accurate position according to accurate positioning information, so that the detection assembly is tightly attached to the sampling point; and rapid and accurate detection of the paint surface color difference is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field, in particular to a lacquer surface color difference detection device. BACKGROUND

[0002] In the existing automobile industry, the outermost layer of the vehicle needs to be painted to improve the appearance of the vehicle, so the lacquer surface needs to be detected for color difference before the vehicle is put into the market to ensure that the lacquer surface color is uniform and the color difference is small. However, the commonly used lacquer surface color evaluation method in the existing lacquer surface color difference detection mainly includes visual method and color difference instrument method; the visual method is a judgment method under the irradiation of natural light source or standard light source by artificial naked eye without color object reflection around, which is a subjective judgment of color difference detection by the detection personnel, and the error is large; the color difference instrument method is a manual detection of sampling points by color difference instrument, but the color difference instrument needs to be closely attached to the sampling points to realize accurate detection in the detection process, and the surface of the vehicle is often irregular, which makes it difficult for the color difference instrument to closely attach to the detection points, resulting in inaccurate detection results of the color difference instrument. The detection method has high efficiency and accuracy under correct operation, but has high requirements for the detection personnel.

[0003] Therefore, it is a technical problem to be solved in the field to provide a lacquer surface color difference detection device that can improve the color difference detection accuracy, detection efficiency and reduce the operation difficulty. UTILITY MODEL CONTENT

[0004] To solve at least one of the above technical problems, the utility model provides a lacquer surface color difference detection device.

[0005] The utility model is realized in this way, a lacquer surface color difference detection device, including movable assembly and detection component, movable assembly is used for bearing and moving detection component, detection component is located movable assembly tail end, including mounting bracket, color difference instrument and range finder, mounting bracket is used for bearing color difference instrument and range finder and is connected with movable assembly, color difference instrument is located mounting bracket center position, is used for detecting sampling point, range finder is located mounting bracket and is located color difference instrument around.

[0006] Optionally, the movable assembly is a mechanical arm with at least three degrees of freedom.

[0007] Optionally, the front end of the mounting bracket is provided with a stepped platform protruding outward.

[0008] Optionally, the front end of the mounting bracket is provided with a first mounting hole and a second mounting hole; the color difference instrument is arranged in the first mounting hole; and the range finder is arranged in the second mounting hole.

[0009] Optionally, the first mounting hole is arranged at the center of the mounting bracket; and the second mounting hole is arranged on both sides or around the first mounting hole.

[0010] Optionally, the colorimeter further comprises a light shielding component arranged at the periphery of the colorimeter and configured to shield external light.

[0011] Optionally, the light shielding component is a light shield.

[0012] Optionally, the light shield is made of a flexible material.

[0013] Optionally, the colorimeter further comprises a relative movement component arranged between the movement component and the detection component and configured to enable the detection component to move relative to the movement component.

[0014] Optionally, the relative movement component is an L-shaped movement arm with a rotatable end.

[0015] The beneficial technical effects of the present application are as follows: firstly, the movement component and the detection component are combined, the detection component is moved to the approximate area of the sampling point by the movement component, the sampling point is accurately positioned by the detection component, the detection component is driven to the accurate position according to the accurate positioning information, the detection component is tightly attached to the sampling point, and the rapid and accurate detection of the paint surface color difference is realized; secondly, the light shielding component is further arranged to isolate the external light source when the detection component is detecting, so as to further ensure the accuracy of the detection. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a schematic diagram of the installation of the present application;

[0017] Figure 2 Fig. 2 is a schematic diagram of the detection component of the present application;

[0018] Figure 3 Fig. 3 is a schematic diagram of the light shield of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. 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 labor fall within the scope of the present application.

[0020] It should be noted that if the embodiments of the utility model have directionality indication, such as up, down, left, right, front, back, the directionality indication is only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture, if the specific posture changes, the directionality indication also changes accordingly. In addition, if the embodiments of the utility model have the description of "first, second", "S1, S2", "step one, step two" and the like, the description is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features or indicating the execution order of the method, etc., and the person skilled in the art can understand that under the technical concept of the utility model, as long as it does not deviate from the utility model points, it should be included in the protection scope of the utility model.

[0021] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0022] As Figures 1-3 Indicated, the utility model provides a paint surface color difference detection device, including movable assembly and detection assembly, movable assembly is used to bear and moves detection assembly, detection assembly is located movable assembly end, including mounting bracket 1, colorimeter 2 and range finder 3, mounting bracket 1 is used to bear colorimeter 2 and range finder 3 and is connected with movable assembly, colorimeter 2 is located mounting bracket 1 center position, is used to detect sampling point, range finder 3 is located mounting bracket 1 on and is located around colorimeter 2.

[0023] The paint surface color difference detection device of the utility model, including movable assembly and detection assembly, on the one hand, the detection assembly can be driven to move by the movable assembly, the detection work is completed, and the labor intensity is reduced, on the other hand, when the detection assembly at the end of the movable assembly reaches the vicinity of the sampling point as a whole, the range finder around the colorimeter on the mounting bracket can sense the distance from the sampling point, when the distance reaches the set threshold value, the colorimeter at the center position of the mounting bracket 1 can be used to carry out the color difference sampling work, when the sampling position on the surface of the vehicle is uneven and irregular, the colorimeter can still be closely attached to the detection point, the detection precision and efficiency of the colorimeter are improved, and the paint surface color difference detection device capable of improving the color difference detection accuracy, detection efficiency and reducing the operation difficulty is provided.

[0024] It is worth noting that the key of the utility model lies in: provide a kind of integrated detection device that active component and detection component are integrated, through the structure of range finder and chromatic aberration instrument of end integration, reach the purpose that chromatic aberration instrument and detection point are closely combined, improve detection precision and efficiency;Specific range finder, chromatic aberration instrument can adopt any structure of prior art, and its specific detection principle is not described here;In addition, the displacement control of active component, trajectory planning etc. can also be realized by programmable logic device such as PLC, it is the conventional technical selection of prior art, not within the protection scope of the utility model.

[0025] Since active component needs to drive detection component to move to the position closely combined with sampling point, the utility model provides a preferred embodiment.

[0026] Preferably, as shown in Figure 1 Active component is mechanical arm 5 with at least three degrees of freedom.

[0027] For example, as shown in Figure 1 The space rectangular coordinate system is established with the base of mechanical arm 5 as origin, wherein vehicle length is placed along X-axis direction, vehicle width is placed along Y-axis direction, and vehicle height is placed along Z-axis direction, when paint surface chromatic aberration detection of sampling point is needed, vehicle is first moved to the surrounding of mechanical arm 5 along X-axis direction, at this time, mechanical arm 5 rotates around Z-axis to make detection component face sampling point direction, then mechanical arm 5 moves detection component to the vicinity of sampling point according to rough position information of sampling point, then detection component works, range finder 3 detects secondary position information of sampling point, and transmits the detected secondary position information back to mechanical arm 5, at this time, mechanical arm 5 moves detection component to the position closely combined with sampling point according to secondary position information, then range finder 3 detects position information again to confirm whether detection component is in the position closely combined with sampling point, if not, then the detected position information is transmitted to mechanical arm 5 again, and mechanical arm 5 adjusts the position of detection component again;If chromatic aberration instrument 2 works, paint surface chromatic aberration is detected.

[0028] It is worth noting that the way to judge whether detection component is in the position closely combined with sampling point is that actual measurement distance of range finder 3 to paint surface around sampling point detected by range finder 3 is compared with expected distance of range finder 3 to paint surface around sampling point, if both are equal or within allowable range, it is considered to be in the position closely combined;The distance detection, comparison and action control of mechanical arm can adopt prior art.

[0029] In order to make the chromatic aberration instrument 2 closely contact with the sampling point, the mounting frame 1 with a large area needs to be closely contacted with the sampling point when the detection base point position of the chromatic aberration instrument 2 and the range finder 3 is on the same horizontal plane, and the difficulty of closely contacting the chromatic aberration instrument 2 with the sampling point is increased, and therefore, the utility model provides an optimal embodiment.

[0030] Preferably, as shown in the figure, Figure 2 The front end of the mounting frame 1 is provided with a stepped platform 101 protruding outward.

[0031] In the process of closely contacting the detection assembly with the sampling point, the stepped platform 101 located at the central position of the mounting frame 1 will first contact the sampling point, and only the stepped platform 101 contacts the sampling point in the contacting process of the detection assembly, and since the area of the stepped platform 101 is much smaller than the area of the mounting frame 1, the stepped platform 101 is more easily closely contacted with the sampling point, and the difficulty of closely contacting the chromatic aberration instrument 2 with the sampling point is reduced.

[0032] It is worth noting that in this embodiment, only the position and function of the stepped platform 101 are limited, but the material, shape and size of the stepped platform 101 are not limited, that is, the material, shape and size of the stepped platform 101 can be arbitrarily set by the person skilled in the art according to the actual use.

[0033] Since the operation mode and operation principle of the chromatic aberration instrument 2 and the range finder 3 are different when operating, the chromatic aberration instrument 2 and the range finder 3 need to be effectively isolated to realize stable operation of both, and the utility model provides an optimal embodiment.

[0034] Preferably, as shown in the figure, Figure 2 The front end of the mounting frame 1 is provided with a first mounting hole and a second mounting hole; the chromatic aberration instrument 2 is outwardly arranged in the first mounting hole; and the range finder 3 is inlaidly arranged in the second mounting hole.

[0035] The chromatic aberration instrument 2 and the range finder 3 are respectively arranged in the first mounting hole and the second mounting hole, the chromatic aberration instrument 2 and the range finder 3 can be spatially isolated, the chromatic aberration instrument 2 and the range finder 3 are prevented from interfering with each other in the operation process, and the operation effect is affected.

[0036] Since the installation position of the range finder 3 will greatly affect the detection effect of the range finder 3 and affect whether the detection assembly can closely contact with the sampling point, the utility model provides an optimal embodiment.

[0037] Preferably, the first mounting hole is arranged at the center of the mounting bracket; and the second mounting hole is arranged on both sides or around the first mounting hole.

[0038] For example, when the surrounding environment of the sampling point is a relatively flat plane: the layout of installing the range finders 3 on both sides of the chromatic aberration instrument 2, because the surrounding environment of the sampling point is relatively flat, a small number of range finders 3 can be used to accurately collect the position information of the sampling point; the embodiment controls the number of range finders 3 on the detection assembly by installing the range finders 3 on both sides of the chromatic aberration instrument 2, reduces the use cost, and because the number of range finders 3 is small, the detection time of the range finders 3 is also shortened, and the detection efficiency is further improved.

[0039] When the surrounding environment of the sampling point is relatively complex, the layout of installing the range finders 3 around the chromatic aberration instrument 2, because the surrounding environment of the sampling point is relatively complex, a large number of range finders 3 are needed to detect the position of the surrounding environment, so as to ensure that the mounting frame 1 and the sampling point can be closely attached; the embodiment enables at least four range finders 3 to be installed on the mounting frame 1 by installing the range finders 3 around the chromatic aberration instrument 2; the embodiment increases the number of range finders 3 on the mounting frame 1 by installing the range finders 3 around the chromatic aberration instrument 2, so as to obtain more accurate position information of the closely attached sampling point, and improves the probability of closely attaching the mounting frame 1 to the sampling point in a complex environment.

[0040] It is worth noting that in the above two preferred embodiments, only the installation position and function of the range finders 3 are limited, but the size, material, power and spacing between the range finders 3 are not limited, that is, the size, material, power and spacing between the range finders 3 can be arbitrarily set by the person skilled in the art according to the actual situation.

[0041] Because the chromatic aberration instrument 2 is in a dark environment when detecting the paint surface, the detection result of the chromatic aberration instrument 2 can be effectively improved, and therefore the utility model provides a preferred embodiment.

[0042] Preferably, the light shielding assembly is further provided, which is arranged on the periphery of the chromatic aberration instrument 2 and used for shielding external light.

[0043] For example, after the mounting frame 1 is closely attached to the sampling point, the light shielding assembly on the periphery of the chromatic aberration instrument 2 can wrap the peripheral area of the mounting frame 1 and the sampling point, which can effectively prevent external light from affecting the chromatic aberration instrument 2 and improve the detection result of the chromatic aberration instrument 2.

[0044] It is worth noting that in this embodiment, only the installation position and function of the light shielding assembly are limited, but the specific structure, material and size thereof are not limited, that is, the specific structure, material and size of the light shielding assembly can be arbitrarily set by the person skilled in the art according to the actual situation.

[0045] Specifically, as shown in Figure 3 The light shielding assembly is a light shield 4.

[0046] In the process that the color difference meter 2 closely contacts with the sampling point, the light shield 4 will first contact with the sampling point and wrap the sampling point to isolate the external light at the sampling point, so as to improve the detection effect of the color difference meter 2.

[0047] Since the light shield 4 needs to isolate the external light at the sampling point and cannot hinder the close contact of the color difference meter 2 with the sampling point, the utility model provides an optimal embodiment.

[0048] Preferably, the material of the light shield 4 is a flexible material.

[0049] In the process that the color difference meter 2 closely contacts with the sampling point, the light shield 4 will first contact with the sampling point and wrap the sampling point to isolate the external light at the sampling point, so as to improve the detection effect of the color difference meter 2.

[0050] Since the change accuracy of the movable assembly group when adjusting the positional relationship between the detection assembly and the sampling point is relatively low, it is difficult to use the movable assembly to adjust the positional relationship when the environment around the sampling point changes slightly, and the utility model provides an optimal embodiment.

[0051] Preferably, the utility model also comprises a relative movable assembly; the relative movable assembly is located between the movable assembly and the detection assembly and is used for enabling the detection assembly to move relative to the movable assembly.

[0052] When the environment around the sampling point is relatively complex and the color difference meter 2 cannot be closely contacted with the sampling point after the distance meter 3 detects the positional information for many times, the relative movable assembly located between the movable assembly and the detection assembly starts to work, the freedom degree of movement is increased due to the addition of the relative movable assembly, the volume of the relative movable assembly is small, and the activity radius is also small, so that the color difference meter 2 can be effectively driven to the position closely contacting with the sampling point.

[0053] It is worth noting that in the embodiment, only the installation position, operation condition and use effect of the relative movable assembly are limited, but the specific structure, material and size of the relative movable assembly are not limited, that is, the specific structure, material and size of the relative movable assembly can be set by the person skilled in the art according to the actual situation.

[0054] Specifically, the relative movable assembly is an L-shaped movable arm 6 with a rotatable end.

[0055] The end-rotatable L-shaped movable arm 6 adds two degrees of freedom, and can finely adjust the color difference meter 2 when the movable assembly cannot move the color difference meter 2 to the position closely contacting the sampling point; for example, when the sampling point is located at the bottom of the protruding position, it is difficult to move the color difference meter 2 to the position closely contacting the sampling point by only using the mechanical arm 5 in the movable assembly, at this time, the end-rotatable L-shaped movable arm 6 is rotated relative to the movable assembly, so that the color difference meter 2 obtains a certain elevation angle, and then the driving of the movable assembly is used, so that the color difference meter 2 can be moved to the position closely contacting the sampling point.

[0056] The above-mentioned embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that, for the ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A paint color difference detection device characterized by comprising: The device comprises a movable component and a detection component; The movable component is used for carrying and moving the detection component; The detection component is located at the end of the movable component and comprises a mounting bracket (1), a color difference meter (2) and a range finder (3); The mounting bracket (1) is used for carrying the color difference meter (2) and the range finder (3) and is connected with the movable component; The color difference meter (2) is located at the center of the mounting bracket (1) and is used for detecting sampling points; the range finder (3) is located on the mounting bracket (1) and surrounds the color difference meter (2); The front end of the mounting bracket (1) is provided with a stepped platform (101) protruding outward; The front end of the mounting bracket (1) is provided with a first mounting hole and a second mounting hole; the color difference meter (2) is protrudingly arranged in the first mounting hole; and the range finder (3) is embeddedly arranged in the second mounting hole. The first mounting hole is arranged at the center of the mounting bracket; and the second mounting hole is arranged on both sides or around the first mounting hole.

2. The paint color difference detection device according to claim 1, characterized by The movable component is a mechanical arm (5) with at least three degrees of freedom.

3. The paint color difference detection device according to claim 1, characterized by The device further comprises a light shielding component arranged around the color difference meter (2) and used for shielding external light.

4. The paint color difference detection device according to claim 3, characterized by The light shielding component is a light shielding cover (4).

5. The paint color difference detection device according to claim 4, characterized by The material of the light shielding cover (4) is flexible.

6. The paint color difference detection device according to any one of claims 1 to 5, characterized by The device further comprises a relative movable component; The relative movable component is located between the movable component and the detection component and is used for enabling the detection component to move relative to the movable component.

7. The paint color difference detection device according to claim 6, wherein The relative movable component is an L-shaped movable arm (6) with a rotatable end.

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