Visual inspection equipment for rivet assembly

Abstract

The utility model discloses a visual inspection device for rivet assembly, which comprises a frame, a two-dimensional inspection module, a three-dimensional inspection module, a longitudinal moving mechanism, a first transverse moving mechanism, a second transverse moving mechanism and an inspection table, the longitudinal moving mechanism is arranged on the frame, the inspection table is arranged on the longitudinal moving mechanism, and the first transverse moving mechanism is arranged on the frame. The two-dimensional detection module is arranged on the rack through the first transverse moving mechanism, and the three-dimensional detection module is arranged on the rack through the second transverse moving mechanism. Through the combination of the longitudinal moving mechanism, the first transverse moving mechanism and the second transverse moving mechanism, a workpiece rivet assembly area can be fully covered, and the detection efficiency and accuracy are improved. Firstly, the two-dimensional detection module is used for carrying out image shooting detection on a workpiece and analyzing appearance defects and related plane sizes of the workpiece and a rivet so as to judge whether the rivet is neglected to be installed or not; and then the three-dimensional detection module scans and detects the diameter and the riveting height of the rivet on the workpiece so as to judge whether the rivet is mistakenly installed and riveted in place or not.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a rivet assembly visual detection device. Background Art

[0002] Metal plates for hardware products usually need to be riveted with different types of rivets and T nuts at certain locations due to structural requirements. When there are a large number of rivets on a plate, it is easy to have missed rivets, wrong rivets, or inadequate rivets. If traditional manual visual inspection is used for verification, it is time-consuming and labor-intensive, and omissions may also occur. Missed rivets will cause the final assembled product to be defective, greatly affecting product quality and causing great waste.

[0003] In response to this situation, a utility model patent with announcement number "CN215297703U" and name "A Rivet Missing Detection Device" discloses a rivet missing detection device, wherein the detection device is arranged in an operating mold, the operating mold includes a mold base, the product to be assembled is placed on the mold base, the mold base is provided with a plurality of guide holes, the product to be assembled is provided with a plurality of mounting holes for mounting rivets, and the mounting holes correspond to the guide holes one by one; the detection device includes a plurality of detection units arranged in the mold base, each detection unit includes a positioning piece arranged in the guide hole, a detection body arranged on the positioning piece, a fixed block arranged on the side of the positioning piece, and a sensor arranged on the fixed block, the sensor is used to detect the detection body, and the positioning piece is used to move along the height direction of the guide hole on the mold base under the downward pressure of the rivet, so as to push the detection body to trigger the sensor. Although the problem of missing rivets is solved by using a detection body, it is impossible to detect whether the riveting is wrong or whether the pressure riveting is in place. There are still problems of riveting errors and missing rivets, making it difficult to ensure product quality. Utility Model Content

[0004] In view of the above-mentioned shortcomings, the purpose of the utility model is to provide a rivet assembly visual inspection device with reasonable structural design and good inspection effect.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] A rivet assembly visual inspection device comprises a frame, a two-dimensional inspection module, a three-dimensional inspection module, a longitudinal movement mechanism, a first transverse movement mechanism, a second transverse movement mechanism and an inspection platform, wherein the longitudinal movement mechanism is arranged on the frame, the inspection platform is arranged on the longitudinal movement mechanism and is driven by the longitudinal movement mechanism to reciprocate in the longitudinal direction, the two-dimensional inspection module is arranged on the frame via the first transverse movement mechanism corresponding to one end position of the longitudinal movement mechanism, and is driven by the first transverse movement mechanism to reciprocate in the transverse direction, the three-dimensional inspection module is arranged on the frame via the second transverse movement mechanism corresponding to the other end position of the longitudinal movement mechanism, and is driven by the second transverse movement mechanism to reciprocate in the transverse direction.

[0007] As a preferred solution of the utility model, the first transverse movement mechanism includes a mounting plate, a first X-axis slide rail, a first X-axis slider, a sliding plate, a first Z-axis motor and a first Z ball screw pair, the mounting plate is provided with a detection opening, the edge position of the first X-axis slide rail corresponding to the detection opening is arranged on the mounting plate, the sliding plate is movably arranged on the first X-axis slide rail through the first X-axis slider, and the first Z-axis motor drives the mounting plate to reciprocate on the first X-axis slide rail through the first Z ball screw pair. Through the combination of the longitudinal movement mechanism and the first transverse movement mechanism, the rivet assembly area of ​​the workpiece can be fully covered.

[0008] As a preferred solution of the utility model, the two-dimensional detection module includes a lens frame and an industrial camera lens arranged on the lens frame. The industrial camera lens can quickly capture high-definition image information of the workpiece.

[0009] As a preferred solution of the utility model, the two-dimensional detection module further includes a surface light source, which is mounted on the lens holder and has an opening at the center for exposing the industrial camera lens. The addition of a surface light source can provide uniform illumination light and effectively avoid the influence of shadows and reflections on image quality.

[0010] As a preferred solution of the utility model, a linear light source is distributed around the periphery of the detection opening, further enhancing the lighting effect on the outline and details of the rivet.

[0011] As a preferred solution of the utility model, the second transverse movement mechanism includes a support, a transverse plate, a second X-axis slide rail, a second X-axis slider, a slide seat, a second Z-axis motor and a second Z ball screw pair. The two ends of the transverse plate are respectively installed on the frame through a support. The second X-axis slide rail is arranged on the transverse plate. The slide seat is movably arranged on the second X-axis slide rail through the second X-axis slider. The second Z-axis motor drives the slide seat to reciprocate on the second X-axis slide rail through the second Z ball screw pair. Through the combination of the longitudinal movement mechanism and the second transverse movement mechanism, the rivet assembly area of ​​the workpiece can be fully covered.

[0012] As a preferred solution of the utility model, the three-dimensional detection module includes a fixed plate and a three-dimensional measuring instrument, wherein the fixed plate is arranged on the slide seat, and the three-dimensional measuring instrument is arranged on the fixed plate. The three-dimensional measuring instrument performs non-contact three-dimensional size detection on the rivet.

[0013] As a preferred solution of the utility model, the frame is provided with a cover plate to cover the frame, which has good protection effect and beautiful appearance.

[0014] The beneficial effects of the utility model are as follows: the utility model has a reasonable structural design, and through the combination of the longitudinal movement mechanism, the first transverse movement mechanism and the second transverse movement mechanism, the rivet assembly area of ​​the workpiece can be fully covered, thereby improving the detection efficiency and accuracy. First, the two-dimensional detection module performs image shooting detection on the workpiece, analyzes the appearance defects and related plane dimensions of the workpiece and the rivet, and thus determines whether the rivet is missing or not; then the three-dimensional detection module scans and detects the rivet diameter and riveting height on the workpiece, thereby determining whether the rivet is wrongly installed or riveted in place, etc. The detection is accurate and fast, and while reducing the labor intensity, it also greatly improves the production efficiency and ensures the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 The structure of the two-dimensional detection module in the utility model is shown as follows Figure 1 .

[0017] Figure 3 The structure of the two-dimensional detection module in the utility model is shown as follows Figure 2 .

[0018] Figure 4 It is a structural schematic diagram of the second transverse movement mechanism and the three-dimensional detection module in the utility model. DETAILED DESCRIPTION

[0019] Example: See Figures 1 to 4 A rivet assembly visual inspection device provided by an embodiment of the utility model includes a frame 1, a two-dimensional inspection module 2, a three-dimensional inspection module 3, a longitudinal movement mechanism 4, a first transverse movement mechanism 5, a second transverse movement mechanism 6 and a detection table 7.

[0020] The longitudinal movement mechanism 4 is arranged on the frame 1 , and the detection platform 7 is arranged on the longitudinal movement mechanism 4 and is driven by the longitudinal movement mechanism 4 to perform reciprocating motion in the longitudinal direction.

[0021] The two-dimensional detection module 2 is arranged on the frame 1 through the first transverse mechanism 5 at one end position corresponding to the longitudinal movement mechanism 4, and is driven by the first transverse mechanism 5 to reciprocate in the transverse direction. Through the combination of the longitudinal movement mechanism 4 and the first transverse mechanism 5, the rivet assembly area of ​​the workpiece can be fully covered, thereby improving the detection efficiency and accuracy. Figure 2 The first transverse movement mechanism 5 includes a mounting plate 51, a first X-axis slide rail 52, a first X-axis slider 53, a sliding plate 54, a first Z-axis motor 55 and a first Z ball screw pair 56. The mounting plate 51 is provided with a detection opening. The number of the first X-axis slide rails 52 is three, one of which is arranged at the edge of one side of the detection opening, and the other two first X-axis slide rails 52 are arranged side by side at the edge of the other side of the detection opening. The sliding plate 54 is movably arranged on the first X-axis slide rail 52 through the first X-axis slider, and the first Z-axis motor 55 drives the mounting plate 51 to reciprocate on the first X-axis slide rail 52 through the first Z ball screw pair 56. The two-dimensional detection module 2 includes a surface light source 21, a line light source 22, a lens frame 23 and an industrial camera lens 24 arranged on the lens frame 23. The surface light source 21 is installed on the lens frame 23, and an opening is opened at the center position to expose the industrial camera lens 24. The addition of a surface light source 21 can provide uniform illumination light, effectively avoiding the influence of shadows and reflections on image quality, thereby improving image recognition rate and detection accuracy. Four line light sources 22 are distributed at the periphery of the detection opening. The lighting effect on the rivet outline and details is further enhanced, and the precision of detection can be further improved. The industrial camera lens 24 can quickly capture high-definition image information of the workpiece, so as to determine whether the rivet is missing, whether the position is correct, and the appearance defects of the rivet and workpiece.

[0022] The three-dimensional detection module 3 is arranged on the frame 1 through the second transverse mechanism 6 at the other end position corresponding to the longitudinal movement mechanism 4, and is driven by the second transverse mechanism 6 to reciprocate in the transverse direction. Through the combination of the longitudinal movement mechanism 4 and the second transverse movement mechanism 6, the rivet assembly area of ​​the workpiece can be fully covered. For details, see Figure 4The second transverse movement mechanism 6 includes a support 61, a cross plate 62, a second X-axis slide rail 63, a second X-axis slider 64, a slide 65, a second Z-axis motor 66 and a second Z ball screw pair 67. The two ends of the cross plate 62 are respectively mounted on the frame 1 through a support 61. The second X-axis slide rail 63 is arranged on the cross plate 62. The slide 65 is movably arranged on the second X-axis slide rail 63 through the second X-axis slider 64. The second Z-axis motor 66 drives the slide 65 to reciprocate on the second X-axis slide rail 63 through the second Z ball screw pair 67. The three-dimensional detection module 3 includes a fixed plate 31 and a three-dimensional measuring instrument 32. The fixed plate 31 is arranged on the slide 65, and the three-dimensional measuring instrument 32 is arranged on the fixed plate 31. The three-dimensional measuring instrument 32 can perform non-contact three-dimensional size detection on the rivet, such as rivet diameter and riveting height, so as to judge whether the rivet is mis-installed and riveted in place.

[0023] The frame 1 is provided with a cover plate 8 to cover it. On the one hand, it can protect the internal precision detection components from the external environment (such as dust, foreign matter, etc.), and on the other hand, it also improves the overall aesthetics and safety of the equipment, meeting the protection and safety standards in industrial production.

[0024] During operation, the workpiece is placed on the inspection table 7, and the longitudinal movement mechanism 4 moves the workpiece to the position below the two-dimensional inspection module 2. The two-dimensional inspection module 2 performs image capture inspection on the workpiece, analyzes the appearance defects and related plane dimensions of the workpiece and rivets, and thus determines whether the rivets are missing or not. Then, the longitudinal movement mechanism 4 moves the workpiece to the position below the three-dimensional inspection module 3, and the three-dimensional inspection module 3 scans and detects the rivet diameter and riveting height on the workpiece, and thus determines whether the rivets are wrongly installed or riveted in place, and effectively solves the problems of missing rivets, wrong rivets, and riveted in place, and ensures product quality.

[0025] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model. As described in the above embodiments of the utility model, other devices obtained by using the same or similar structure are all within the protection scope of the utility model.

Claims

1. A rivet assembly visual inspection device, comprising a frame, characterized in that: It also includes a two-dimensional detection module, a three-dimensional detection module, a longitudinal movement mechanism, a first transverse movement mechanism, a second transverse movement mechanism and a detection platform. The longitudinal movement mechanism is arranged on the frame, and the detection platform is arranged on the longitudinal movement mechanism and is driven by the longitudinal movement mechanism to reciprocate in the longitudinal direction. The two-dimensional detection module is arranged on the frame through the first transverse movement mechanism corresponding to one end position of the longitudinal movement mechanism, and is driven by the first transverse movement mechanism to reciprocate in the transverse direction. The three-dimensional detection module is arranged on the frame through the second transverse movement mechanism corresponding to the other end position of the longitudinal movement mechanism, and is driven by the second transverse movement mechanism to reciprocate in the transverse direction.

2. The rivet assembly visual inspection device according to claim 1, characterized in that: The first transverse movement mechanism includes a mounting plate, a first X-axis slide rail, a first X-axis slider, a sliding plate, a first Z-axis motor and a first Z ball screw pair. A detection opening is provided on the mounting plate, and the edge position of the first X-axis slide rail corresponding to the detection opening is arranged on the mounting plate. The sliding plate is movably arranged on the first X-axis slide rail through the first X-axis slider, and the first Z-axis motor drives the mounting plate to reciprocate on the first X-axis slide rail through the first Z ball screw pair.

3. The rivet assembly visual inspection device according to claim 1, characterized in that: The two-dimensional detection module includes a lens frame and an industrial camera lens arranged on the lens frame.

4. The rivet assembly visual inspection device according to claim 3, characterized in that: The two-dimensional detection module also includes a surface light source, which is mounted on the lens frame and has an opening at the center for exposing the industrial camera lens.

5. The rivet assembly visual inspection device according to claim 2, characterized in that: Linear light sources are distributed around the periphery of the detection opening.

6. The rivet assembly visual inspection device according to any one of claims 1 to 5, characterized in that: The second transverse movement mechanism includes a pillar, a transverse plate, a second X-axis slide rail, a second X-axis slider, a slide seat, a second Z-axis motor and a second Z ball screw pair. Both ends of the transverse plate are respectively installed on the frame through a pillar. The second X-axis slide rail is arranged on the transverse plate. The slide seat is movably arranged on the second X-axis slide rail through the second X-axis slider. The second Z-axis motor drives the slide seat to reciprocate on the second X-axis slide rail through the second Z ball screw pair.

7. The rivet assembly visual inspection device according to claim 6, characterized in that: The three-dimensional detection module includes a fixed plate and a three-dimensional measuring instrument. The fixed plate is arranged on the slide seat, and the three-dimensional measuring instrument is arranged on the fixed plate.

8. The rivet assembly visual inspection device according to claim 1, characterized in that: The frame is provided with a cover plate for covering the frame.

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