Automobile paint surface detection device and automobile detection line

Abstract

The utility model relates to the technical field of automobile detection, and discloses an automobile paint surface detection device and an automobile detection line. The six-axis manipulator is used for keeping a set distance between the detection assembly and the surface of the to-be-detected workpiece; the detection assembly comprises a supporting frame installed at the execution end of the six-axis mechanical arm, a detection camera and a detection light source, wherein the detection camera and the detection light source are installed on the supporting frame side by side. The center line of a lens of the detection camera is parallel to the light emitting direction of the detection light source, and the facing direction of the lens of the detection camera is the same as the light emitting direction. According to the automobile paint surface detection device and the automobile detection line, the accuracy of automobile paint surface detection can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile detection, in particular to an automobile paint surface detection device and an automobile detection line. Background Art

[0002] At present, the quality of the surface paint of automobiles needs to be tested. Once there are too many scratches, bubbles, paint damage, bumps, particles, fibers, pinholes, paint bubbles, marks, paint mist and other defects on the paint surface, the paint surface of the automobile will be unqualified and need to be repainted. The existing detection method is generally a fixed-distance photo detection, that is, the car is parked in a suitable position, and a fixed detection camera is used to take a photo of the surface of one side of the car for detection. In the existing detection method, since the detection camera is far away from the car, and the distance between the detection camera and different parts of the car is quite different, the light brightness in different areas of the car is quite different (due to different inclination angles, the light intensity reflected to the detection camera is obviously different), which leads to poor detection accuracy and makes it difficult to detect paint defects in local areas.

[0003] In view of this, it is necessary to design a car paint surface detection device and a car inspection line to improve the accuracy of car paint surface detection.

[0004] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used as prior art with respect to the present disclosure. Utility Model Content

[0005] The utility model provides an automobile paint surface detection device and an automobile detection line, which improve the accuracy of automobile paint surface detection.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An automobile paint surface detection device comprises a six-axis manipulator and a detection component;

[0008] The six-axis manipulator is used to keep the detection component at a set distance from the surface of the workpiece to be detected;

[0009] The detection component includes a support frame installed on the execution end of the six-axis manipulator, and a detection camera and a detection light source installed side by side on the support frame; the center line of the lens of the detection camera is parallel to the light emitting direction of the detection light source, and the lens orientation direction of the detection camera is the same as the light emitting direction.

[0010] Optionally, the detection light sources include at least two, and the two detection light sources are disposed on two opposite sides of the detection camera.

[0011] Optionally, the detection light source includes a first light emitting component and a second light emitting component, the light emitting color of the first light emitting component is white, and the light emitting color of the second light emitting component is different from the light emitting color of the first light emitting component.

[0012] Optionally, the light output color of the second light output component is red.

[0013] Optionally, the second light emitting component comprises white light lamp beads, a transparent color palette and a light diffuser plate arranged in sequence along the light emitting direction, and the transparent color palette is detachably inserted between the white light lamp beads and the light diffuser plate;

[0014] The light emitted by the white light lamp beads passes through the transparent color palette and the light diffusion plate and then shines on the surface of the workpiece to be detected.

[0015] Optionally, the automobile paint surface inspection device also includes a non-contact distance measuring device for detecting the distance from the inspection camera to the surface of the workpiece to be inspected; the non-contact distance measuring device is installed on the support frame, and the non-contact distance measuring device is electrically connected to the six-axis manipulator.

[0016] Optionally, a rotating shaft is installed on the six-axis manipulator, and the support frame is detachably installed on the end of the rotating shaft.

[0017] Optionally, the detection light source is a coaxial light source.

[0018] Optionally, the support frame is provided with a partition plate, the detection camera and the detection light source are arranged on two opposite sides of the partition plate, and the partition plate is provided with a cooling flow channel;

[0019] A heat insulation layer is provided on one side of the partition plate close to the detection camera, and the heat insulation layer is located between the detection camera and the partition plate.

[0020] An automobile inspection line comprises the automobile paint surface inspection device as described in any one of the above items.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The automobile paint inspection device and automobile inspection line provided by the utility model adjust the position of the inspection component through a six-axis manipulator so that the distances from the inspection component to the paint surfaces of different areas of the workpiece to be inspected (such as an automobile) are equal, and then take pictures, thereby improving the accuracy of paint inspection in different areas, and lighting for the inspection camera through the detection light sources arranged side by side, which can keep the lighting brightness stable during the inspection process, and the lighting angle and lighting brightness of the paint surfaces of different areas of the detection light source are basically the same, thereby further ensuring the accuracy of paint inspection, avoiding the situation where it is difficult to detect paint defects in a certain area, and further improving the accuracy of automobile paint inspection.

[0023] The present invention has other characteristics and advantages, which will be apparent from the accompanying drawings and subsequent specific embodiments incorporated herein, or will be described in detail in the accompanying drawings and subsequent specific embodiments incorporated herein, which together are used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a top view schematic diagram of the automobile paint surface detection device provided by the embodiment of the utility model when detecting an automobile;

[0026] Figure 2 It is a three-dimensional schematic diagram of the automobile paint surface detection device provided by the embodiment of the utility model when detecting an automobile;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the automobile paint surface detection device provided by the embodiment of the utility model;

[0028] Figure 4 It is a schematic diagram of the installation structure of the detection component provided in the embodiment of the utility model;

[0029] Figure 5 It is a schematic diagram of the installation structure of another detection component provided by an embodiment of the utility model.

[0030] Figure numerals: 1. six-axis manipulator; 2. detection component; 21. support frame; 2101. partition plate; 2102. thermal insulation layer; 22. detection camera; 23. detection light source; 231. first light output component; 232. second light output component; 2301. white light lamp bead; 2302. transparent palette; 2303. light diffuser plate. DETAILED DESCRIPTION

[0031] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0033] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0034] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0035] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0036] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0037] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0038] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0039] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] Embodiment 1

[0041] In view of the defects of the existing automobile paint surface inspection device, the applicant, based on many years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theory, actively conducts research and innovation, hoping to create a technology that can solve the defects in the existing technology and make the automobile paint surface inspection device more practical. After continuous research and design, and after repeated trial samples and improvements, the present utility model with real practical value was finally created.

[0042] Please refer to Figures 1 to 4 The embodiment of the utility model provides a car paint surface inspection device, characterized in that it includes a six-axis manipulator 1 and a detection component 2; the six-axis manipulator 1 is used to keep the detection component 2 at a set distance from the surface of the workpiece to be inspected; preferably, when performing paint surface inspection, the center line of the lens is perpendicular to the normal direction of the paint surface. The workpiece to be inspected is a car.

[0043] The detection component 2 includes a support frame 21 installed on the execution end of the six-axis manipulator 1, and a detection camera 22 and a detection light source 23 installed side by side on the support frame 21; the lens center line of the detection camera 22 is parallel to the light emitting direction of the detection light source 23, and the lens orientation direction of the detection camera 22 is the same as the light emitting direction.

[0044] In this embodiment, the distance between the detection camera 22 and the surface of the workpiece to be inspected is controlled by the six-axis manipulator 1 to avoid obvious light and dark differences in a photographed image due to the distance relationship, thereby ensuring the quality of photographed inspections in different areas. In addition, by installing the detection camera 22 and the detection light source 23 side by side on the support frame 21, it can be effectively ensured that when the detection camera 22 takes a photo, the lighting effect of the detection light source 23 is basically the same, so that the inspection effect of each area of ​​the workpiece to be inspected is relatively accurate, avoiding the situation where a paint defect in a certain area is detected, and further improving the accuracy of the paint surface inspection of the workpiece to be inspected.

[0045] Optionally, the detection light source 23 includes at least two detection light sources 23, which are disposed on two opposite sides of the detection camera 22, thereby avoiding the situation where there are shadows in local areas of the paint surface in the photographing area, thereby improving the accuracy of photographing detection.

[0046] Optionally, the detection light source 23 includes a first light emitting component 231 and a second light emitting component 232, the light emitting color of the first light emitting component 231 is white, and the light emitting color of the second light emitting component 232 is different from the light emitting color of the first light emitting component 231. Specifically, it is necessary to perform at least two photo detections on the detection area. During the first photo detection, the first light emitting component 231 emits light, and during the second photo detection, the second light emitting component 232 emits light. Specifically, under different lighting environments, the difficulty of detecting different paint defects is also different, which enables photo detection to detect more paint defects. Generally, the light emitting color of the second light emitting component 232 can be adjusted according to the color of the paint surface, and the light emitting color of the second light emitting component 232 is generally the same as the color of the paint surface.

[0047] In a specific implementation, the light output color of the second light output component 232 is red.

[0048] Optionally, the second light emitting component 232 includes a white light lamp bead 2301, a transparent color palette 2302 and a light diffuser 2303 arranged in sequence along the light emitting direction, and the transparent color palette 2302 is detachably inserted between the white light lamp bead 2301 and the light diffuser 2303; the light emitted by the white light lamp bead 2301 passes through the transparent color palette 2302 and the light diffuser 2303 and then is emitted onto the surface of the workpiece to be inspected. Specifically, when different light emitting colors are required, transparent color palettes 2302 of different colors can be inserted accordingly. For example, a red transparent color palette 2302 is inserted to make the light emitting color of the second light emitting component 232 red.

[0049] Optionally, the automobile paint surface detection device also includes a non-contact distance measuring device 24 for detecting the distance from the detection camera 22 to the surface of the workpiece to be detected; the non-contact distance measuring device 24 is installed on the support frame 21, and the non-contact distance measuring device 24 is electrically connected to the six-axis manipulator 1. Specifically, the non-contact distance measuring device 24 is an infrared distance measuring device, which is used to detect the distance from the detection camera 22 to the surface of the workpiece to be detected in real time, so that the six-axis manipulator 1 can more accurately adjust the position of the detection camera 22 to avoid the detection camera 22 being too far or too close to the surface of the workpiece to be detected. It should also be noted that when the workpiece to be detected is a car, the weight of the car is large and it is difficult to adjust the position. Therefore, using the six-axis manipulator 1 to fine-tune the position can make detection more convenient.

[0050] Optionally, a rotating shaft is installed on the six-axis manipulator 1, and the support frame 21 is detachably installed on the end of the rotating shaft.

[0051] Optionally, the detection light source 23 is a coaxial light source.

[0052] Optionally, the support frame 21 is provided with a partition plate 2101, the detection camera 22 and the detection light source 23 are arranged on opposite sides of the partition plate 2101, and the partition plate 2101 is provided with a cooling channel; a heat insulation layer 2102 is arranged on the side of the partition plate 2101 close to the detection camera 22, and the heat insulation layer 2102 is located between the detection camera 22 and the partition plate 2101. Specifically, the arrangement of the partition plate 2101 and the heat insulation layer 2102 can effectively avoid excessive temperature rise during the detection, thereby reducing the deformation of the optical elements in the detection camera 22 and ensuring the detection accuracy of the detection camera 22.

[0053] Embodiment 2

[0054] This embodiment discloses an automobile inspection line, including the automobile paint surface inspection device as in Embodiment 1. It should also be noted that a plurality of automobile paint surface inspection devices may be provided in one automobile inspection line.

[0055] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A vehicle paint surface detection device, characterized in that: It comprises a six-axis manipulator (1) and a detection component (2); The six-axis manipulator (1) is used to keep the detection component (2) at a set distance from the surface of the workpiece to be detected; The detection assembly (2) comprises a support frame (21) mounted on the execution end of the six-axis manipulator (1), and a detection camera (22) and a detection light source (23) mounted side by side on the support frame (21); the center line of the lens of the detection camera (22) is parallel to the light emitting direction of the detection light source (23), and the lens orientation direction of the detection camera (22) is the same as the light emitting direction.

2. The automobile paint surface detection device according to claim 1, characterized in that: The detection light sources (23) include at least two, and the two detection light sources (23) are arranged on two opposite sides of the detection camera (22).

3. The automobile paint surface detection device according to claim 1, characterized in that: The detection light source (23) comprises a first light emitting component (231) and a second light emitting component (232); the light emitting color of the first light emitting component (231) is white, and the light emitting color of the second light emitting component (232) is different from the light emitting color of the first light emitting component (231).

4. The automobile paint surface detection device according to claim 3, characterized in that: The light output color of the second light output component (232) is red.

5. The automobile paint surface detection device according to claim 3, characterized in that: The second light emitting component (232) comprises a white light lamp bead (2301), a transparent color palette (2302) and a light diffuser (2303) which are sequentially arranged along the light emitting direction, and the transparent color palette (2302) is detachably inserted between the white light lamp bead (2301) and the light diffuser (2303); The light emitted by the white light lamp bead (2301) passes through the transparent color palette (2302) and the light diffusion plate (2303) and then is projected onto the surface of the workpiece to be inspected.

6. The automobile paint surface detection device according to claim 1, characterized in that: It also includes a non-contact distance measuring device (24) for detecting the distance between the detection camera (22) and the surface of the workpiece to be detected; the non-contact distance measuring device (24) is installed on the support frame (21), and the non-contact distance measuring device (24) is electrically connected to the six-axis manipulator (1).

7. The automobile paint surface detection device according to claim 1, characterized in that: The six-axis manipulator (1) is provided with a rotating shaft, and the support frame (21) is detachably mounted on the end of the rotating shaft.

8. The automobile paint surface detection device according to claim 1, characterized in that: The detection light source (23) is a coaxial light source.

9. The automobile paint surface detection device according to claim 1, characterized in that: The support frame (21) is provided with a partition plate (2101), the detection camera (22) and the detection light source (23) are arranged on two opposite sides of the partition plate (2101), and the partition plate (2101) is provided with a cooling flow channel; A heat insulating layer (2102) is provided on a side of the partition plate (2101) close to the detection camera (22), and the heat insulating layer (2102) is located between the detection camera (22) and the partition plate (2101).

10. An automobile inspection line, characterized in that: The invention comprises an automobile paint surface detection device as claimed in any one of claims 1 to 9.

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