A light source assembly for strip surface inspection

Abstract

A light source assembly for strip surface detection relates to the technical field of visual detection, comprising an angle adjusting frame and a fixing mechanism thereon, the angle adjusting frame comprises two vertical rods arranged oppositely, and a support plate transversely arranged between the two vertical rods, the angle of the support plate is adjustable, the fixing mechanism comprises two fixing strips oppositely arranged on the two sides of the support plate and adjustable in spacing, the inner sides of the two fixing strips are provided with clamping grooves matched with the end portions of the strip-shaped light sources, the two ends of the two fixing strips are provided with plugging structures, and the two plugging structures at the same end of the two fixing strips are adjustable in position along the length direction of the fixing strips, and wire outlet grooves are further formed in the two fixing strips along the length direction and penetrating through the two side faces of the two fixing strips. The angle adjusting frame is used to realize synchronous angle adjustment of all the light sources on the support plate, so as to ensure the angle consistency of the multiple light sources; the adjustable spacing of the two fixing strips and the movable plugging structure matched with the clamping grooves enable the light sources to be obliquely arranged between the two fixing strips, so as to meet the local area illumination and reduce the number of light sources used.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection technology, specifically to a light source assembly for strip surface inspection. Background Technology

[0002] When using visual inspection technology to detect surface defects in strip materials, the following problems exist regarding the setting of light sources: the wider the strip, the more light sources are required. To ensure that the angles of each light source are consistent, they are usually connected end to end to form a single light source strip (for example, the spliced ​​light source in patent application number CN202222473539.1), fixed to an aluminum profile, and then the angle is adjusted by angle adjustment seats connected to both ends of the aluminum profile. Although this method can ensure that the angles of each light source are consistent, the illumination of the single light source strip is linear. When local area illumination is required, multiple light source strips can only be set up side by side, and the same angle adjustment must be performed on each light source strip. This not only results in a large number of light sources required, but also makes it difficult to ensure the consistency of the angle adjustment of each light source strip. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model provides a light source assembly for strip surface inspection.

[0004] The technical solution of this utility model is as follows:

[0005] A light source assembly for strip surface inspection includes an angle adjustment frame and a fixing mechanism thereon, wherein the fixing mechanism is used to install strip light sources, and the angle adjustment frame is used to adjust the angle of all strip light sources on the fixing mechanism as a whole.

[0006] Specifically, the angle adjustment frame includes two vertical rods arranged opposite each other, and a support plate arranged horizontally between the two vertical rods. The angle of the support plate is adjustable. The fixing mechanism includes two fixing strips arranged opposite each other on both sides of the support plate with adjustable spacing. The inner side of the two fixing strips is provided with a slot adapted to the end of the strip light source. Both ends of the two fixing strips are provided with a sealing structure. The two sealing structures located at the same end of the two fixing strips are set to be adjustable in position along the length direction of the fixing strips. The two fixing strips are also provided with a wire outlet groove that runs through both sides of them along the length direction.

[0007] As a further implementation, the sealing structure includes two sealing plates and two abutting blocks. The two sealing plates are respectively fixed to the same end of the two fixing strips, and the two abutting blocks are respectively slidably disposed on the two fixing strips and locked to the fixing strips by the first locking member.

[0008] Specifically, the clamping block includes a U-shaped block that slides with the upper side of the fixing strip. One side of the opening of the U-shaped block is provided with a plug that extends into the slot. The first locking member is spirally provided on the other side of the opening, and its inner end abuts against the side wall of the fixing strip.

[0009] Furthermore, the block slides and fits into the inner wall of the slot.

[0010] Furthermore, the side of the block facing the sealing plate is provided with an elastic element.

[0011] Furthermore, the upper side of the U-shaped block is also vertically provided with a second locking member whose inner end abuts against the upper side of the fixing strip.

[0012] As a further implementation, the support plate has vertical plates at opposite ends, and each of the two vertical rods has a connecting shaft that passes horizontally through the corresponding vertical plate. The end of the connecting shaft that passes through the vertical plate is screwed with a locking nut.

[0013] Furthermore, mounting holes are provided on the vertical rod for fixing external equipment.

[0014] Preferably, the two fixing strips are of the same specification.

[0015] This invention uses an angle adjustment bracket to achieve synchronous angle adjustment of all strip light sources on the support plate, ensuring the consistency of angles among multiple strip light sources. The adjustable spacing between the two fixed strips and the slot combined with the movable sealing structure allow the strip light sources to be installed at an angle between the two fixed strips, satisfying local area lighting while reducing the number of strip light sources used. The plugs and connecting wires of each strip light source can be connected after passing through the wire outlet groove. The wire outlet groove facilitates the organization of the strip light source circuits, avoiding messy wiring, and provides a neat wiring space for connecting the circuits of each strip light source, making it convenient for the wiring connection operation of each strip light source. Attached Figure Description

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0018] Figure 2 for Figure 1 Top view;

[0019] Figure 3 for Figure 1 Side view;

[0020] Figure 4 for Figure 2 Schematic diagram of AA section;

[0021] Figure 5 for Figure 3 Enlarged view of point B;

[0022] Figure 6 This is a schematic diagram of the use of this embodiment (the strip light source is installed perpendicular to the fixed strip);

[0023] Figure 7 This is another usage diagram of this embodiment (the strip light source is installed at an angle relative to the fixed strip).

[0024] The components represented by the various reference numerals in the diagram are:

[0025] 1. Vertical rod; 11. Mounting hole; 2. Support plate; 3. Vertical plate; 4. Connecting shaft; 5. Locking nut; 6. Fixing strip; 61. Slot; 62. Cable outlet slot; 7. Sealing plate; 8. Anchor block; 81. U-shaped block; 82. Blocking block; 83. First locking component; 84. Second locking component; 100. Gantry frame; 200. Camera; 300. Strip material. Detailed Implementation

[0026] Combination Figures 1-4 This embodiment provides a light source assembly for strip surface inspection, including an angle adjustment frame and a fixing mechanism disposed thereon. The fixing mechanism is used to install strip light sources, and the angle adjustment frame is used to adjust the angle of the fixing mechanism, thereby synchronously adjusting the angle of all strip light sources on the fixing mechanism.

[0027] Specifically, the angle adjustment frame includes two vertical rods 1 arranged opposite each other, and a support plate 2 arranged horizontally between the two vertical rods 1. The angle of the support plate 2 is adjustable. The fixing mechanism includes two fixing strips 6 arranged opposite each other on both sides of the support plate 2 with adjustable spacing. The inner side of the two fixing strips 6 is provided with a slot 61 adapted to the end of the strip light source. Both ends of the two fixing strips 6 are provided with a sealing structure. The two sealing structures located at the same end of the two fixing strips 6 are arranged with adjustable positions along the length direction of the fixing strips 6. The two fixing strips 6 are also provided with a wire outlet groove 62 that runs through both sides along the length direction. The plugs and connecting wires of each strip light source can be connected after passing through the wire outlet groove 62, which not only facilitates the arrangement of the wiring and avoids mess, but also provides a neat wiring space for the connection of each strip light source.

[0028] The angle of support plate 2 is adjustable, combined with Figure 1 Specifically, the support plate 2 has upright plates 3 at opposite ends, and each of the two vertical rods 1 has a connecting shaft 4 that passes horizontally through the corresponding upright plate 3. One end of the connecting shaft 4 that extends out of the upright plate 3 is screwed with a locking nut 5. The upright plate 3 and the connecting shaft 4 cooperate to realize the rotation function of the support plate 2. The locking nut 5 can quickly lock the position of the support plate 2 after the angle is adjusted. The operation is simple and the locking is firm, ensuring that the angle of the strip light source does not shift during the detection process.

[0029] In the prior art, the camera and strip light source for visual inspection are usually set on a gantry. The strip passes through the inside of the gantry. The camera and strip light source are located on the upper and lower sides of the gantry, respectively. When the strip passes through, the camera takes continuous pictures under the illumination of the strip light source, and then the surface defects are analyzed through the images.

[0030] In this embodiment, the vertical rod 1 is provided with mounting holes 11 for fixing external equipment. The external equipment can be the gantry frame 100 described in the prior art (see above). Figure 6 A camera 200 is installed on the upper part of the gantry frame 100. The two vertical rods 1 of the angle adjustment frame are connected to the lower part of the gantry frame 100 through the mounting holes 11. The strip 300 passes between the camera 200 and the fixing mechanism installed between the two vertical rods 1. The strip light source is installed on the fixing mechanism to form a visual inspection system that works with the camera 200.

[0031] It should be noted that the strip light source in this embodiment is the strip light source that provides illumination to the camera in existing visual inspection technology. In order to facilitate the installation of its housing, it is usually designed according to the installation requirements. Therefore, it can be understood that, according to the structural design of the above-mentioned fixing mechanism, this embodiment also has extension plates that cooperate with the slots 61 extending outward from both ends of the length of the housing of the strip light source. The ends of the extension plates can be designed as arcs so that the strip light source can be inserted into the slots 61 at various angles. In addition, if necessary, the housing of the strip light source can also be extended to both sides of the length. The distance between the light rays of the adjacent two strip light sources is also different depending on the length of the extension.

[0032] Combination Figure 2 and Figure 5 The sealing structure includes two sealing plates 7 and two abutting blocks 8. The two sealing plates 7 are respectively fixed to the same end of the two fixing strips 6. The two abutting blocks 8 are respectively slidably disposed on the two fixing strips 6 and locked to the fixing strips 6 by the first locking member 83. In use, multiple strip light sources can be inserted sequentially along the slots 61 of the two fixing strips 6. The two sealing plates 7 limit the ends, and finally the two abutting blocks 8 abut against the multiple strip light sources, making them firmly fixed in the slots 61. The sealing plates 7 and the slidable abutting blocks 8 cooperate to allow the strip light sources to be flexibly installed according to the required number of strip light sources.

[0033] Combination Figure 5 The clamping block 8 includes a U-shaped block 81 that slides with the upper side of the fixing strip 6. One side of the opening of the U-shaped block 81 has a plug 82 that extends into the slot 61. A first locking member 83 is spirally disposed on the other side of the opening, with its inner end abutting against the side wall of the fixing strip 6. When adjusting the clamping block 8, the sliding engagement between the U-shaped block and the fixing strip 6 ensures smooth movement; the plug 82 extends into the slot 61 to abut against the strip light source and, in conjunction with the first locking member 83, locks its position, effectively preventing the strip light source from shifting along the length of the slot 61 and improving the reliability of the fixation.

[0034] The upper side of the U-shaped block 81 is also vertically provided with a second locking member 84 that abuts against the upper side of the fixing strip 6. The first locking member 83 and the second locking member 84 form a bidirectional locking, which respectively restricts the displacement of the abutting block 8 along the length direction and vertical direction of the fixing strip 6, completely preventing the abutting block 8 from loosening. It can be applied to complex detection environments such as high-frequency vibration.

[0035] The blocking block 82 slides against the inner wall of the slot 61, which not only ensures the smooth sliding of the pressing block 8, but also restricts the lateral displacement of the strip light source in the slot 61, further enhancing the stability of the strip light source fixation.

[0036] The blocking block 82 is provided with an elastic element on the side facing the sealing plate 7. The elastic element can be a spring arranged along the length of the slot 61. It is a commercially available spring, and the specific parameters can be selected according to actual needs. The specific structure is not shown in the attached figure. The elastic element can buffer the contact between the strip light source and the blocking block 82 through elastic force to avoid rigid collision damage to the strip light source. At the same time, the elastic preload can adapt to the small error in the length of the strip light source to ensure that the strip light source is always in a stable state.

[0037] The two fixing strips 6 are of the same specification, which is convenient for processing. The two fixing strips 6 are symmetrically distributed on both sides of the central axis of the support plate 2, which can ensure that the positions of the two side slots 61 are consistent, which facilitates the symmetrical installation of the two ends of the strip light source, ensures that the strip light source is evenly stressed after installation, reduces the light angle deviation caused by installation offset, and improves the stability and accuracy of detection.

[0038] During installation, a strip light source with a beam length not less than the beam width can be selected based on the widest illumination range, and installed along a strip perpendicular to the fixed strip 6 (see [reference]). Figure 6 The widest illumination range is a section along the length of the strip. Alternatively, the strip light source can be installed at an angle relative to the length of the fixed strip 6, which can reduce the number of strip light sources while meeting the required area lighting needs. Figure 7 The strip light sources shown are arranged in a wavy pattern after installation. In addition, when the illumination range is reduced (such as when the length range along the strip length is reduced), the shorter strip light sources can be installed without replacing them. This is achieved by shortening the distance between the two fixed strips 6 and installing the strip light sources at an angle relative to the length of the fixed strips 6. This reduces both the illumination range and the number of strip light sources.

Claims

1. A light source assembly for strip surface inspection, characterized in that, Including the angle adjustment frame and its fixing mechanism; The angle adjustment frame includes two vertical rods (1) arranged opposite each other, and a support plate (2) arranged horizontally between the two vertical rods (1), and the angle of the support plate (2) is adjustable; The fixing mechanism includes two fixing strips (6) that are positioned opposite each other on both sides of the support plate (2) and have an adjustable spacing. The inner sides of the two fixing strips (6) are provided with slots (61) that are adapted to the ends of the strip light source. Both ends of the two fixing strips (6) are provided with sealing structures, and the two sealing structures located at the same end of the two fixing strips (6) are positioned with adjustable positions along the length of the fixing strips (6). The two fixing strips (6) are also provided with wire outlet grooves (62) that run through both sides of them along the length direction.

2. The light source assembly for strip surface inspection as described in claim 1, characterized in that, The sealing structure includes two sealing plates (7) and two abutting blocks (8); The two sealing plates (7) are respectively fixed at the same end of the two fixing strips (6), and the two abutting blocks (8) are respectively slidably disposed on the two fixing strips (6) and locked to the fixing strips (6) by the first locking member (83).

3. The light source assembly for strip surface inspection as described in claim 2, characterized in that, The clamping block (8) includes a U-shaped block (81) that slides with the upper side of the fixing strip (6); The U-shaped block (81) has a blocking block (82) extending into the slot (61) on one side of the opening, and the first locking member (83) is spirally arranged on the other side of the opening, with its inner end abutting against the side wall of the fixing strip (6).

4. The light source assembly for strip surface inspection as described in claim 3, characterized in that, The block (82) slides against the inner wall of the slot (61).

5. The light source assembly for strip surface inspection as described in claim 3, characterized in that, The block (82) has an elastic element on the side facing the sealing plate (7).

6. The light source assembly for strip surface inspection as described in claim 3, characterized in that, The upper side of the U-shaped block (81) is also vertically provided with a second locking member (84) on the upper side of the inner end of the fixing strip (6).

7. A light source assembly for strip surface inspection as described in any one of claims 1-6, characterized in that, The support plate (2) is provided with upright plates (3) at opposite ends; Each of the two vertical rods (1) is provided with a connecting shaft (4) that passes horizontally through the corresponding vertical plate (3), and a locking nut (5) is spirally provided at one end of the connecting shaft (4) that passes through the vertical plate (3).

8. The light source assembly for strip surface inspection as described in claim 7, characterized in that, The vertical rod (1) has mounting holes (11) for fixing to external equipment.

9. A light source assembly for strip surface inspection as described in claim 7, characterized in that, The two fixing strips (6) have the same specifications.

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