Piston ring appearance acquisition device

Abstract

The utility model provides a piston ring appearance acquisition device. The piston ring appearance acquisition device comprises a first camera, a first lens, a second lens, a second camera, a rotary objective table structure, a first illumination structure and a second illumination structure, the rotary objective table structure comprises a product carrying table which is used for carrying a product piston ring. The rotary objective table structure can drive the product piston ring to rotate through the product objective table; the first camera is located over the product piston ring, a first illumination structure is installed between the first lens and the product carrying table, the second camera directly faces the side face of the product piston ring, and a second illumination structure is installed between the second lens and the product carrying table. According to the utility model, the camera is used for photographing the piston ring, so that the real state of the piston ring at the time can be recorded, and data loss in the detection process is avoided. And the design of the rotary objective table is adopted, so that the camera can shoot the piston ring at multiple angles, more multi-angle pictures are obtained, and multidirectional inspection on the appearance of the piston ring is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to piston ring detection field, specifically, relate to a piston ring appearance collection device. BACKGROUND

[0002] Piston ring (Piston Ring) is used for embedding the metal ring inside the piston groove, and the piston ring is a kind of metal elastic ring with larger outward expansion deformation, it is assembled to the corresponding annular groove of section face, reciprocating and rotating movement piston ring, rely on the pressure difference of gas or liquid, form seal between ring outer circle face and cylinder and one side of ring and ring groove.

[0003] Piston ring needs to check piston ring appearance before factory. The traditional checking mode is artificial checking, and artificial checking is mainly the mode of directly watching the overall appearance of real piston by artificial naked eye. But as it is directly watched by artificial naked eye, the condition of real piston ring is difficult to record truly, and the real state data of piston ring can be lost in detection process. UTILITY MODEL CONTENT

[0004] In view of the defects in the prior art, the utility model aims at providing a piston ring appearance collection device.

[0005] According to the piston ring appearance collection device provided by the utility model, first camera, first lens, second lens, second camera, rotating object table structure, first illumination structure and second illumination structure are included;

[0006] The first lens is installed on the first camera;

[0007] The rotating object table structure includes product table, and the product table is used for carrying product piston ring;Rotating object table structure can drive the product piston ring to rotate through the product table;

[0008] The first camera is located directly above the product piston ring, and the first illumination structure is installed between the first lens and the product table;

[0009] The second lens is installed on the second camera, the second camera is opposite to the side surface of the product piston ring, and the second illumination structure is installed between the second lens and the product table.

[0010] Preferably, the rotating object table structure further includes servo motor structure, the servo motor structure is connected with the product table, and is used for driving the product table to rotate the product piston ring.

[0011] Preferably, the first illumination structure includes multi-time sequence light source;Multi-time sequence light source is coaxially arranged with the product piston ring.

[0012] Preferably, the multi-time sequence light source is an 8-part multi-time sequence light source.

[0013] Preferably, the second light structure comprises a first light source, a ring light source and a second light source.

[0014] The angle between the light of the first light source and the horizontal axis is greater than or equal to 45 degrees; and the angle between the light of the second light source and the horizontal axis is greater than or equal to 45 degrees.

[0015] The first light source and the second light source are symmetrically arranged along the horizontal axis.

[0016] Preferably, the first camera is installed on the first connecting rod through a camera connecting rod and a first fixed connecting block.

[0017] Preferably, the multi-time sequence light source is installed on the first connecting rod through a second light source fixed block and a first light source fixed block.

[0018] Preferably, the second light structure and the second lens are both installed on the fixed plate.

[0019] Preferably, the first light source and the second light source are rotatably installed on the fixed plate through a first light source fixed block and a second light source fixed block, respectively.

[0020] Preferably, the piston ring appearance acquisition device further comprises a control box body, the first connecting rod is installed on the top of the control box body through a first connecting rod fixed block; the second fixed plate connecting block and the third fixed plate connecting block are both installed on a second connecting rod, the second connecting rod is installed on the top of the control box body through a second connecting rod fixed block; and the rotary sample stage structure is also installed on the top of the control box body.

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

[0022] The utility model discloses a camera instead of human eyes to take photos of the piston ring, which can record the real state of the piston ring at that time and will not cause the loss of data in the detection process. Moreover, the utility model adopts the design of the rotary sample stage, so that the camera can take photos of the piston ring from multiple angles, and more angle photos are also more helpful for the multi-angle inspection of the piston ring appearance. BRIEF DESCRIPTION OF DRAWINGS

[0023] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0025] Figure 2 It isFigure 1 Structure schematic view when viewed from the left side;

[0026] Figure 3 For Figure 1 Structure schematic view when viewed from the right side;

[0027] Figure 4 Structure schematic view for the multi-time sequence light source 8 partition in the utility model;

[0028] Figure 5 For Figure 1 Schematic view when embodying the back structure;

[0029] Figure 6 Structure schematic view for the piston ring;

[0030] Figure 7 Structure schematic view when viewed from the top in the utility model;

[0031] Figure 8 Structure schematic view when viewed from the 45-degree side in the utility model;

[0032] Figure 9 Structure schematic view when viewed from the front in the utility model;

[0033] Figure 10 Structure schematic view when the utility model is applied to the automatic trap detection system;

[0034] Figure 11 Light-emitting angle schematic view in the utility model;

[0035] Figure 12 Light-emitting angle and distance schematic view in the utility model;

[0036] As shown in the figure:

[0037] DETAILED DESCRIPTION

[0038] The utility model will be explained in detail in combination with specific embodiments. The following embodiments will help the person skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that, for those skilled in the art, without departing from the concept of the utility model, a number of changes and improvements can be made. These all belong to the protection scope of the utility model.

[0039] The utility model provides a piston ring appearance acquisition device, reference Figures 1-9 As shown, including first camera 11, first lens 12, second lens 17, second camera 18, rotating object table structure, first illumination structure and second illumination structure, first lens 12 is installed on first camera 11,

[0040] The rotating stage structure comprises a product stage 31 for carrying the product piston ring 14; the rotating stage structure can drive the product piston ring 14 to rotate through the product stage 31; the first camera 11 is located directly above the product piston ring 14, and a first lighting structure is installed between the first lens 12 and the product stage 31;

[0041] The second lens 17 is installed on the second camera 18, the second camera 18 faces the side of the product piston ring 14, and a second lighting structure is installed between the second lens 17 and the product stage 31. In a preferred example, the distance between the first lens 12, the second lens 17 and the piston ring is the working distance of the camera lens imaging, which is affected by the size of the piston ring 14; under the condition that the camera chip size and the lens focal length are constant, the working distance changes according to the change of the detection field of view; the operator can select appropriate camera lens and working distance according to the size of the detection target;

[0042] The rotating stage structure further comprises a servo motor structure 32 connected with the product stage 31 for driving the product stage 31 to rotate the product piston ring 14.

[0043] The first lighting structure comprises a multi-time sequence light source 13. In a preferred example, as shown in Figure 4 The multi-time sequence light source 13 is an 8-part multi-time sequence light source. The multi-time sequence light source 13 is coaxially arranged with the product piston ring 14. Specifically, the multi-time sequence light source 13 is arranged above the piston ring, and is coaxially arranged with the camera lens and the piston ring, the working distance is not interfered with other components, and stable illumination can be provided. In a preferred example, the multi-time sequence light source 13 is controlled to be lighted by a light source controller, and the light intensity of the light source can be adjusted. The image brightness collected by the lens of the camera is affected by the camera exposure time, gain, chip sensitivity, lens aperture size, light source brightness, etc., which can be adjusted in combination. More specifically, the brightness of the multi-time sequence light source 13 is adjusted to the maximum 255.

[0044] The second lighting structure comprises a first light source 15, a ring light source 16 and a second light source 19; the first light source 15 and the second light source 19. As shown in Figure 11 The angle between the light of the first light source 15 and the horizontal axis is ≥45°; the angle between the light of the second light source 19 and the horizontal axis is ≥45°; the first light source 15 and the second light source 19 are symmetrically arranged along the horizontal axis. The first light source 15 and the second light source 19 are both used for low-angle dark-field illumination, and the light brightness is the maximum value 255; in a preferred example, as shown in Figure 12As shown, the first light source 15 and the second light source 19 are 60mm apart from the horizontal axis.

[0045] The first camera 11 is mounted on the first connecting rod 22 via a camera connecting rod 26 and a first fixed connecting block 21. In a preferred embodiment, the first fixed connecting block 21 is mounted on the first fixed connecting block 21 with adjustable height, that is, the distance between the first camera 11 and the multi-time light source 13 can be adjusted by moving the first fixed connecting block 21 up and down.

[0046] The multi-time-sequence light source 13 is mounted on the first connecting rod 22 via the second light source fixing block 24 and the first light source fixing block 23. In a preferred embodiment, the first light source fixing block 23 is movably mounted on the first connecting rod 22, that is, the distance between the multi-time-sequence light source 13 and the product platform 31 can be adjusted by moving the first light source fixing block 23 up and down.

[0047] Both the second lighting structure and the second lens 17 are mounted on the fixed plate 38. For example... Figure 3 As shown, the first light source 15 and the second light source 19 are rotatably mounted on the fixing plate 38 via the first light source fixing block 34 and the second light source fixing block 37, respectively. Specifically, the first light source fixing block 34 and the second light source fixing block 37 are mounted on the fixing plate 38 through an arc-shaped hole structure, meaning that the light emission direction of the first light source 15 and the second light source 19 can be adjusted along the arc of the arc-shaped hole structure.

[0048] like Figure 5 As shown, the fixing plate 38 is slidably mounted on the second fixing plate connecting block 52 and the third fixing plate connecting block 54. Specifically, the fixing plate 38 is mounted on the second fixing plate connecting block 52 and the third fixing plate connecting block 54 via the first fixing plate connecting block 51. The first fixing plate connecting block 51 is provided with a slide rail, which is slidably connected to the second fixing plate connecting block 52 and the third fixing plate connecting block 54.

[0049] The piston ring appearance acquisition device also includes a control box housing 110, on which a start button 111 and an emergency stop button 112 are provided. Both the start button 111 and the emergency stop button 112 are electrically connected to the servo motor structure 32. The first connecting rod 22 is mounted on the top of the control box housing 110 via a first connecting rod fixing block 25. The second fixing plate connecting block 52 and the third fixing plate connecting block 54 are both mounted on the second connecting rod 53, which is mounted on the top of the control box housing 110 via a second connecting rod fixing block 55. A rotating platform structure is also mounted on the top of the control box housing 110.

[0050] The utility model discloses adopt upper camera (namely first camera 11) and side camera (namely second camera 18) to the piston ring end face (namely upper surface 61) and the outer circle face 62 (such as Figure 6 ) carry out photographing, and the upper camera light source adopts 8 partition multi-time sequence light source such as Figure 4 , cooperation servo motor structure 32 rotates, and the piston ring end face carries out multiple subexposure photographing, and in one preferred example, is 16 times.

[0051] The utility model discloses photograph the photo can mainly provide the basis for the detection of product end face pressure injury, scratch, black spot, corrosion foreign matter, character, burr, opening collapse and other defects. After using the utility model to photograph the product piston ring, can use artificial naked eye to carry out defect detection to the photo, also can use the subsequent automatic detection system to carry out automatic detection to the photo. Figure 10 , the automatic detection system, cooperation conventional poem algorithm, visual algorithm - photometric stereo algorithm and AI vision depth learning big model, utilize depth learning big model to mark the image collected, classification, segmentation, learning, then according to the photo of the utility model, carry out defect detection to the piston ring end face. In the automatic detection scheme, first use servo motor to drive the product to rotate, then use industrial vision hardware and software system to carry out defect detection to the piston ring end face and the outer circle face, compared with the traditional manual visual detection of the existing automobile piston ring manufacturing plant, improve the detection efficiency and accuracy of piston ring product detection, save the labor cost, at the same time, avoid the problems such as subjective judgment of artificial, visual fatigue, low efficiency, low accuracy, easy to miss the defect etc. Compared with artificial detection, the scheme improves the accuracy and detection efficiency of piston ring appearance defect detection; save the artificial cost; the accuracy is improved, and the efficiency is improved, and the defect can be digital quantization standard at the same time;

[0052] The utility model discloses camera adopts annular light source plus double strip light light source (namely first strip light light source and second strip light light source) optical scheme, and the bright field imaging of piston ring product is carried out;Servo motor drives the rotation of piston ring and carries out snapshot photographing, namely snapshot in the rotation process, so that the subsequent product defect detection is convenient.

[0053] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0054] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A piston ring appearance acquisition device characterized by comprising: The piston ring appearance acquisition device comprises a first camera (11), a first lens (12), a second lens (17), a second camera (18), a rotating stage structure, a first light structure, and a second light structure. The first lens (12) is mounted on the first camera (11). The rotating stage structure comprises a product stage (31) for carrying a product piston ring (14), and the rotating stage structure can drive the product piston ring (14) to rotate through the product stage (31). The first camera (11) is located directly above the product piston ring (14), and a first light structure is mounted between the first lens (12) and the product stage (31). The second lens (17) is mounted on the second camera (18), the second camera (18) faces a side surface of the product piston ring (14), and a second light structure is mounted between the second lens (17) and the product stage (31).

2. The piston ring appearance capture device of claim 1, wherein, The rotating stage structure further comprises a servo motor structure (32) connected with the product stage (31) and used for driving the product stage (31) to rotate the product piston ring (14).

3. The piston ring appearance capture device of claim 1, wherein, The first light structure comprises a multi-time sequence light source (13), and the multi-time sequence light source (13) is coaxially arranged with the product piston ring (14).

4. The piston ring appearance capture apparatus of claim 3, wherein The multi-time sequence light source (13) is an 8-partition multi-time sequence light source.

5. The piston ring appearance capture device of claim 1, wherein, The second light structure comprises a first light source (15), a ring light source (16), and a second light source (19). The first light source (15) and the second light source (19); The angle between the light rays of the first light source (15) and the horizontal axis is greater than or equal to 45 degrees, and the angle between the light rays of the second light source (19) and the horizontal axis is greater than or equal to 45 degrees. The first light source (15) and the second light source (19) are symmetrically arranged along the horizontal axis.

6. The piston ring appearance capture apparatus of claim 1, wherein The first camera (11) is mounted on the first connecting rod (22) through a camera connecting rod (26) and a first fixed connecting block (21).

7. The piston ring appearance capture apparatus of claim 3, wherein The multi-time sequence light source (13) is mounted on the first connecting rod (22) through a second light source fixed block (24) and a first light source fixed block (23).

8. The piston ring appearance capture apparatus of claim 5, wherein, The second light structure and the second lens (17) are mounted on a fixed plate (38).

9. The piston ring appearance capture apparatus of claim 8, wherein, The first light source (15) and the second light source (19) are rotatably mounted on the fixed plate (38) through a first light source fixed block (34) and a second light source fixed block (37), respectively.

10. The piston ring appearance capture apparatus of claim 6, wherein, The piston ring appearance acquisition device further comprises a control box (110), the first connecting rod (22) is mounted on the top of the control box (110) through a first connecting rod fixed block (25), a second fixed plate connecting block (52) and a third fixed plate connecting block (54) are mounted on a second connecting rod (53), the second connecting rod (53) is mounted on the top of the control box (110) through a second connecting rod fixed block (55), and the rotating stage structure is also mounted on the top of the control box (110).

Images