A light source for side appearance inspection of products of different sizes

Abstract

The present invention provides a light source for side appearance inspection of products of different sizes under test, comprising a base, a light source channel being provided in the middle of the base, first reflectors being installed around the light source channel, an adjustable light source module being installed on the outer side of each first reflector, the adjustable light source module being rotatably arranged on the base, a linkage adjustment reflector module being installed on or above the light source channel, the linkage adjustment reflector module comprising an adjustment annular plate, a height adjustment component installed on at least one side of the adjustment annular plate, and an adjustment reflector component installed around the adjustment annular plate, the height adjustment component comprising a sliding part and a height positioning part, the adjustment reflector component comprising a hinge seat installed on the adjustment annular plate, a rotating connecting rod rotatably connected to the hinge seat, a supporting rod installed on the base, and a second reflector rotatably connected to the rotating connecting rod and the supporting rod respectively; the light source of the present invention is easy to adjust, and four reflector components can be linked at one time for angle adjustment, with high efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of appearance inspection light sources, and in particular to a light source for appearance inspection of the sides of products to be inspected that is compatible with products of different sizes. Background Art

[0002] In the field of machine vision, there are two ways to detect the side appearance of a product:

[0003] 1. Step-by-step light source inspection: the appearance inspection light source device first performs light source inspection on one side of the product under test, then rotates the product under test through the rotating device under the product, and then performs light source inspection on the next side of the product under test;

[0004] 2. Integral light source detection, that is, the appearance detection light source device performs light source detection on the overall plane of the product being tested, and then detects and processes each side of the overall plane in the machine image program.

[0005] Compared with step-by-step light source detection, the overall light source detection is more efficient and can save a lot of time in automated detection. The industry generally adopts the overall light source detection method.

[0006] However, the integrated light source detection has the following disadvantages:

[0007] 1. The light source is set inside the reflector, and the light source cannot be adjusted or the light source device needs to be removed before adjustment, which makes the light source adjustment difficult;

[0008] 2. The reflectors of this integrated light source detection need to be adjusted one by one, which is complicated to debug and has poor efficiency.

[0009] Therefore, because of the above two shortcomings, after the integrated light source detection is debugged, it is generally used to detect products of a certain size, which is not universal. If it is forced to detect products of different sizes, the debugging will become very complicated and tedious, seriously affecting the detection efficiency. Summary of the Invention

[0010] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a light source for inspecting the appearance of the sides of products of different sizes, which is used to solve the following two problems:

[0011] First, the adjustable light source module is located outside the first reflector of the light source channel, making it easy to adjust the angle;

[0012] Second, the adjustment ring plate of the linkage adjustment reflective module only needs to adjust the height of the adjustment ring plate to adjust the angle of the second reflective mirrors of the four adjustment reflective components at one time. The angle adjustment of the second reflective mirror is simple, which greatly improves the detection efficiency.

[0013] In summary, the first and second points facilitate user adjustment, so that the device can be compatible with tested products of different sizes.

[0014] To achieve the above-mentioned objectives, the present invention provides a light source for side appearance detection of products of different sizes under test, comprising a base, a light source channel being opened in the middle of the base, first reflectors being installed around the light source channel, and an adjustable light source module being installed on the outer side of each first reflector, the adjustable light source module being rotatably set on the base, a linkage adjustment reflection module being installed on or above the light source channel, the linkage adjustment reflection module comprising an adjustment annular plate, a height adjustment assembly installed on at least one side of the adjustment annular plate, and an adjustment reflection assembly installed around the adjustment annular plate, the height adjustment assembly comprising a sliding part for facilitating the sliding of the adjustment annular plate and a height positioning part for fixing the adjustment annular plate, the adjustment reflection assembly comprising a hinge seat installed on the adjustment annular plate, a rotating connecting rod rotatably connected to the hinge seat, a support rod installed on the base, and a second reflector rotatably connected to the rotating connecting rod and the support rod respectively.

[0015] Preferably, an outer cover is installed on the top of the base, and the outer cover covers the linkage adjustment reflection module.

[0016] Preferably, a shooting station for placing a camera lens is provided directly above the light source channel, and a placement station for placing products is provided at the bottom or directly below the light source channel.

[0017] Preferably, the base is provided with placement slots on the outer sides thereof for placing the adjustable light source module and adjusting the angle thereof.

[0018] Preferably, a first rotating shaft groove is provided at each end of the placement groove, and an arc-shaped mounting groove is installed on one side of the first rotating shaft groove. The rotating shaft is inserted through the first rotating shaft groove so that the adjustable light source module can be rotatably set on the placement groove, and the bolt is screwed into the arc-shaped mounting groove so that the adjustable light source module is fixed on the placement groove.

[0019] Preferably, the sliding part of the height adjustment assembly includes a guide column inserted on the base and a bushing mounted on one side of the adjusting ring plate, the bushing is slidably connected to the guide column, and the height positioning part includes a positioning column inserted on the base and a positioning bolt threadedly connected to one side of the adjusting ring plate, when the height of the adjusting ring plate is fixed, the positioning bolt abuts against one end of the positioning column.

[0020] Preferably, the number of the hinge seat, the rotating connecting rod and the supporting rod of the adjustable reflection component is two.

[0021] Preferably, it also includes an annular convex wall arranged at the top of the light source channel, the adjustment annular plate is slidably connected to the annular convex wall, the hinge seat includes a mounting groove for one end of the rotating connecting rod to be placed, a mounting bolt inserted into the mounting groove and rotatably connected to one end of the rotating connecting rod, and a retaining spring clamped at one end of the mounting bolt, and an adjustment window is opened on one side of the casing to facilitate height adjustment of the height adjustment component.

[0022] Preferably, the angle adjustment range of the adjustable light source module is 0 degrees to 90 degrees.

[0023] Preferably, the angle adjustment range of the second reflector is 0 degrees to 90 degrees.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention is provided with an adjustable light source module, which is arranged on the outside of the first reflector of the light source channel. It has the advantage of convenient angle adjustment. At the same time, the adjustable light source module with a certain angle on all sides is used to meet the lighting requirements of the four sides of the product being tested.

[0026] 2. The present invention is provided with a linkage adjustment reflection module, which can adjust the height of the adjusting ring plate up and down, thereby linking the second reflectors of the four reflection components to adjust the angles at one time, which makes debugging simple and the use and detection efficiency fast.

[0027] 3. The optical path layout of the present invention adjusts the angle of the adjustable light source module so that the adjustable light source module illuminates the side of the product under test. Then, the side of the product under test is reflected onto the first reflector. Then, the light on the first reflector is reflected onto the second reflector with a certain angle. Finally, the light on the plane of the product under test and the second reflector is captured by the camera lens. This optical path layout can greatly improve the light contrast, so that the camera lens can clearly capture the plane of the product under test on the one hand, and on the other hand, the four sides of the product under test have good light contrast.

[0028] 4. In summary, the present invention is a light source for side appearance inspection of products of different sizes. The above points 1 and 2 make it easier for users to adjust and find the most suitable brightness, thereby greatly improving the efficiency of appearance inspection. It is effectively compatible with products of different sizes for use, avoiding excessive waste of angle adjustment measurement design costs and greatly saving testing time.

[0029] The optical path layout of the third point above makes the appearance inspection quality of the four-sided side appearance inspection light source higher, and is further effectively compatible with the appearance inspection of products of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a structural diagram of one viewing angle of a light source for side appearance inspection of products of different sizes provided by an embodiment of the present invention;

[0032] Figure 2 This is a schematic structural diagram of another viewing angle of a light source for inspecting the appearance of four sides of products under test that is compatible with products of different sizes, provided by an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of a front-section optical path of a light source for side appearance inspection of products of different sizes, provided by an embodiment of the present invention;

[0034] Figure 4 This is a schematic structural diagram of a light source for peripheral side appearance inspection of products of different sizes provided by an embodiment of the present invention, omitting the outer cover;

[0035] Figure 5 This is a structural diagram of a light source for peripheral side appearance inspection of products of different sizes provided by an embodiment of the present invention, omitting the outer cover and the linkage adjustment reflection module;

[0036] Figure 6 It is a structural diagram of a linkage adjustment reflection module provided by an embodiment of the present invention.

[0037] Included in the diagram are:

[0038] 1. Base; 11. Adjustable light source module; 12. First reflector; 13. Light source channel; 14. Linkage adjustment reflector module; 141. Adjustment ring plate; 142. Height adjustment assembly; 1421. Sliding member; 14211. Guide column; 14212. Bushing; 1422. Height positioning member; 14221. Positioning column; 14222. Positioning bolt; 143. Adjustment reflector assembly; 1431. Hinge seat; 14311. Mounting groove; 14312. Mounting bolt; 14313. Retaining spring; 1432. Rotating connecting rod; 1433. Support rod; 1434. Second reflector; 16. Annular convex wall; 17. Placement groove; 18. First rotation axis groove; 19. Arc-shaped installation groove; 2. Outer cover; 21. Adjustment window; 3. Shooting station; 4. Placement station DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solution in this embodiment of the present invention in conjunction with the drawings in this embodiment of the present invention. Obviously, the embodiment described is only one embodiment of the present invention, not all embodiments of the present invention. Based on this embodiment of the present invention, all other embodiments of the present invention obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] See also Figures 1 to 6 The embodiment of the present invention provides a light source for side appearance inspection of products of different sizes under test, including a base 1, a light source channel 13 is opened in the middle of the base 1, and first reflectors 12 are respectively installed around the light source channel 13. An adjustable light source module 11 is installed on the outer side of each first reflector 12. The adjustable light source module 11 is rotatably set on the base 1, and a linkage adjustment reflection module 14 is installed on the top or above the light source channel 13. The linkage adjustment reflection module 14 includes an adjustment ring plate 141 and a height adjustment group installed on at least one side of the adjustment ring plate 141. Part 142 and an adjustment reflection component 143 installed around the adjustment annular plate 141, the height adjustment component 142 includes a sliding part 1421 for facilitating the sliding of the adjustment annular plate 141 and a height positioning part 1422 for fixing the adjustment annular plate 141, the adjustment reflection component 143 includes a hinge seat 1431 installed on the adjustment annular plate 141, a rotating connecting rod 1432 rotatably connected to the hinge seat 1431, a supporting rod 1433 installed on the base 1 and a second reflecting mirror 1434 rotatably connected to the rotating connecting rod 1432 and the supporting rod 1433 respectively.

[0041] Among them, the first reflecting mirror is embedded in the inner side of the base 1, and the second reflecting mirror is installed through a mirror seat, and the mirror seat is rotatably connected to the rotating connecting rod 1432 and the supporting rod 1433 respectively.

[0042] A cover 2 is mounted on top of the base 1, covering the linkage adjustment reflective module 14. The cover 2 protects the optical channel, the first reflector 12, and the second reflector 1434 from being affected by external objects. It also enhances the overall structural strength. Finally, it focuses light, ensuring that the light reflected from the first reflector 12 and the second reflector 1434 is more accurately focused on the camera lens.

[0043] A shooting station 3 for placing a camera lens is provided directly above the light source channel 13 , and a placement station 4 for placing a product to be tested is provided at the bottom or directly below the light source channel 13 .

[0044] The base 1 is provided with placement slots 17 on the outer sides thereof for placing the adjustable light source module 11 and adjusting its angle.

[0045] A first rotating shaft groove 18 is respectively provided at both ends of the placement groove 17, and an arc-shaped mounting groove 19 is installed on one side of the first rotating shaft groove 18. The rotating shaft is inserted through the first rotating shaft groove 18 so that the adjustable light source module 11 can be rotatably set on the placement groove 17, and the bolt is screwed into the arc-shaped mounting groove 19 so that the adjustable light source module 11 is fixed on the placement groove 17.

[0046] The sliding part 1421 of the height adjustment assembly 142 includes a guide column 14211 inserted on the base 1 and a bushing 14212 sleeved on one side of the adjusting ring plate 141. The bushing 14212 is slidably connected to the guide column 14211. The height positioning part 1422 includes a positioning column 14221 inserted on the base 1 and a positioning bolt 14222 threadedly connected to one side of the adjusting ring plate 141. When the height of the adjusting ring plate 141 is fixed, the positioning bolt 14222 is pressed against one end of the positioning column 14221.

[0047] The number of the hinge seat 1431 , the rotating connecting rod 1432 and the supporting rod 1433 of the adjustment reflective component 143 are all two.

[0048] An embodiment of the present invention that is compatible with tested products of different sizes also includes an annular convex wall 16 arranged at the top of the light source channel 13, an adjusting annular plate 141 is slidably connected to the annular convex wall 16, a hinge seat 1431 includes a mounting groove 14311 for one end of the rotating link 1432 to be placed, a mounting bolt 14312 inserted into the mounting groove 14311 and rotatably connected to one end of the rotating link 1432, and a retaining spring 14313 clamped at one end of the mounting bolt 14312, and an adjustment window 21 is opened on one side of the outer cover 2 to facilitate height adjustment of the height adjustment component 142.

[0049] The angle adjustment range of the adjustable light source module 11 is 0 degrees to 90 degrees.

[0050] The angle adjustment range of the second reflector 1434 is 0 degrees to 90 degrees.

[0051] An operating principle of an embodiment of the present invention that is compatible with tested products of different sizes is as follows:

[0052] 1. Place the product to be tested on the placement station 4, place the camera lens on the shooting station 3, and observe the imaging of the camera lens;

[0053] 2. Adjust the angle of the adjustable light source module 11 (the maximum adjustment angle range is 0-90 degrees) so that the adjustable light source module 11 is aligned with the side of the product to be tested. First, unscrew the bolts on the arc-shaped mounting slot 19 of the placement slot 17 of the base 1, and then adjust the adjustable light source module 11 to the optimal angle through the shaft on the first shaft slot 18. After confirming the imaging condition of the camera lens, tighten the bolts on the arc-shaped mounting slot 19 to fix the adjustable light source module 11 on the placement slot 17;

[0054] 3. Adjust the angle of the linkage adjustment reflection module 14 (the maximum adjustment angle range is 0-90 degrees).

[0055] a. Adjust the height of the adjusting ring plate 141 using the height adjustment assembly 142. Locate the adjustment window 21 of the outer cover 2, remove or loosen the bolts of the height adjustment assembly 142, and manually slide the adjusting ring plate 141 up and down (the bushing 14212 will slide up and down on the guide post 14211, and the adjusting ring plate 141 will slide up and down on the annular protrusion 16). At this point, the following steps b will occur. After the angle of the linkage adjustment reflector module 14 is adjusted, tighten the bolt against one end of the positioning post 14221. At this point, the adjusting ring plate 141 is fixed.

[0056] b. When the annular plate 141 slides up and down, it drives the rotating link 1432 to move. However, the support rod 1433 is mounted on the base 1 and is fixed. As a result, the second reflector 1434 is not moved by the rotating link 1432 but can only be rotated by the rotating link 1432, thereby achieving the linkage angle adjustment of the four second reflectors 1434 on the annular plate 141.

[0057] 4. The camera lens takes photos of the product under test.

[0058] An embodiment of the present invention is a light source for detecting the appearance of the four sides of the tested products that is compatible with different sizes. First, its optical path layout makes the imaging quality of the appearance detection of the four sides of the tested products clearer, with more contrast and higher detection quality; second, the adjustment angle of its adjustable light source module 11 is convenient, and the four second reflectors of its linkage adjustment reflection module 14 can be adjusted in a linkage manner at one time, which makes the angle adjustment convenient, the adjustment simple, and the detection efficiency high.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A light source for detecting the appearance of the sides of products of different sizes, characterized by: The invention comprises a base (1), wherein a light source channel (13) is provided in the middle of the base (1), first reflectors (12) are respectively installed around the light source channel (13), an adjustable light source module (11) is installed outside each first reflector (12), the adjustable light source module (11) is rotatably arranged on the base (1), a linkage adjustment reflection module (14) is installed on the top or above the light source channel (13), and the linkage adjustment reflection module (14) comprises an adjustment ring plate (141), a height adjustment component (142) installed on at least one side of the adjustment ring plate (141), and a height adjustment component (143) installed on the adjustment ring plate (143). 1) an adjustable reflective assembly (143) arranged around the periphery, the height adjustment assembly (142) comprising a sliding member (1421) for facilitating the sliding of the adjustable annular plate (141) and a height positioning member (1422) for fixing the adjustable annular plate (141), the adjustable reflective assembly (143) comprising a hinge seat (1431) mounted on the adjustable annular plate (141), a rotating connecting rod (1432) rotatably connected to the hinge seat (1431), a supporting rod (1433) mounted on the base (1), and a second reflector (1434) rotatably connected to the rotating connecting rod (1432) and the supporting rod (1433), respectively.

2. The light source for detecting the appearance of the sides of products of different sizes according to claim 1, characterized in that: An outer cover (2) is installed on the top of the base (1), and the outer cover (2) covers the linkage adjustment reflection module (14).

3. The light source for detecting the appearance of the sides of products of different sizes according to claim 1, characterized in that: A shooting station (3) for placing a camera lens is provided directly above the light source channel (13), and a placement station (4) for placing a product to be tested is provided at the bottom or directly below the light source channel (13).

4. The light source for detecting the appearance of the sides of products of different sizes according to claim 1, characterized in that: Placement slots (17) for placing and adjusting the angle of the adjustable light source module (11) are respectively provided on the outer sides of the base (1).

5. The light source for detecting the appearance of the sides of products of different sizes according to claim 4, characterized in that: The placement slot (17) is provided with a first rotating shaft slot (18) at both ends, and an arc-shaped mounting slot (19) is provided on one side of the first rotating shaft slot (18). The rotating shaft is inserted through the first rotating shaft slot (18) so that the adjustable light source module (11) can be rotatably arranged on the placement slot (17). The bolt is screwed into the arc-shaped mounting slot (19) so that the adjustable light source module (11) is fixedly arranged on the placement slot (17).

6. The light source for detecting the appearance of the sides of products of different sizes according to claim 1, characterized in that: The sliding member (1421) of the height adjustment assembly (142) includes a guide column (14211) inserted on the base (1) and a bushing (14212) sleeved on one side of the adjustment annular plate (141); the bushing (14212) is slidably connected to the guide column (14211); the height positioning member (1422) includes a positioning column (14221) inserted on the base (1) and a positioning bolt (14222) threadedly connected to one side of the adjustment annular plate (141); when the height of the adjustment annular plate (141) is fixed, the positioning bolt (14222) is pressed against one end of the positioning column (14221).

7. The light source for detecting the appearance of the sides of products of different sizes according to claim 1, characterized in that: The number of the hinge seat (1431), the rotating connecting rod (1432) and the supporting rod (1433) of the adjusting reflection component (143) is two.

8. The light source for detecting the appearance of the sides of products of different sizes according to claim 2, characterized in that: The light source channel (13) further comprises an annular convex wall (16) provided at the top of the light source channel (13); the adjusting annular plate (141) is slidably connected to the annular convex wall (16); the hinge seat (1431) comprises a mounting groove (14311) for receiving one end of the rotating connecting rod (1432); a mounting bolt (14312) inserted into the mounting groove (14311) and rotatably connected to one end of the rotating connecting rod (1432); and a retaining spring (14313) clamped at one end of the mounting bolt (14312); and an adjusting window (21) is provided on one side of the outer cover (2) for facilitating height adjustment of the height adjustment component (142).

9. The light source for detecting the appearance of the sides of products of different sizes according to claim 1, characterized in that: The angle adjustment range of the adjustable light source module (11) is 0 degrees to 90 degrees.

10. The light source for detecting the appearance of the sides of products of different sizes according to claim 1, characterized in that: The angle adjustment range of the second reflector (1434) is 0 degrees to 90 degrees.

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