A detection device

Abstract

This utility model relates to a detection device, including a visual inspection camera, a rejection mechanism, and a transport mechanism for transporting workpieces. The visual inspection camera includes a first camera positioned above the transport path of the transport mechanism and a second camera positioned below the transport path. The transport path of the transport mechanism has a light-transmitting area, and the second camera faces the light-transmitting area. The rejection mechanism is used to reject workpieces that fail visual inspection from the transport path. This solution sets a first camera above the transport path of the workpiece and a second camera below the transport path. The first camera performs visual inspection on the upper surface of the workpiece on the transport path. When the material is transported to the light-transmitting area, the second camera facing the light-transmitting area performs visual inspection on the bottom surface of the workpiece located in the light-transmitting area. There is no need to set up an additional flipping mechanism to flip the workpiece, which effectively reduces the detection cost, improves the detection efficiency, and has strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and specifically to a testing device. Background Technology

[0002] After workpiece processing and production, quality inspection is often required, such as visual inspection to determine whether there are defects in the workpiece. In the prior art, when visually inspecting workpieces, the workpiece is moved to the inspection station manually or by a conveyor device, and then inspected by the inspection device. Some also have a rejection device after the inspection device to reject materials that fail the visual inspection. Since the bottom surface of the workpiece placed at the inspection station is blocked, the inspection device cannot inspect its surface. Usually, after one inspection, the workpiece is flipped over by a flipping mechanism to expose the original bottom surface of the workpiece, making it easier for the inspection device to inspect. For example, the publication text of Chinese invention application "A workpiece appearance inspection device CN202410393712.8" discloses the setting of "feeding mechanism, preliminary inspection mechanism, first-level inspection mechanism, flipping mechanism, second-level inspection mechanism and rejection mechanism". This inspection method requires a flipping mechanism (such as a robotic arm or flipping fixture) to be set up near the inspection device to flip the workpiece, which has high equipment cost and the flipping action takes a certain amount of time to complete, resulting in low inspection efficiency. Utility Model Content

[0003] The purpose of this invention is to develop a detection device to solve the problem that the existing technology requires flipping the workpiece through a flipping mechanism for detection, which leads to increased equipment costs and decreased detection efficiency. This invention aims to reduce the production cost of the detection device and improve the detection efficiency of visual inspection equipment.

[0004] This utility model is achieved through the following technical solution: a detection device, including a visual inspection camera, a rejection mechanism, and a transport mechanism for transporting workpieces. The visual inspection camera includes a first camera disposed above the transport path of the transport mechanism and a second camera disposed below the transport path. A light-transmitting area is provided on the transport path of the transport mechanism, and the second camera faces the light-transmitting area. The rejection mechanism is used to reject workpieces that fail visual inspection from the transport path.

[0005] The beneficial effects of the above technical solution are as follows: A first camera is set above the material transport path of the workpiece, and a second camera is set below the material transport path. The first camera performs appearance inspection on the upper surface of the workpiece on the material transport path. When the material is transported to the light-transmitting area, the second camera facing the light-transmitting area performs appearance inspection on the bottom surface of the workpiece located in the light-transmitting area. There is no need to set up an additional flipping mechanism, which reduces inspection costs and improves inspection efficiency. The light-transmitting area can be a simple hollow area or a structure made of transparent material, such as glass, set on the material transport path to support the workpiece.

[0006] Furthermore, the transport mechanism includes a first transport section and a second transport section connected to each other, both equipped with conveyor belts; a first camera is positioned above the first transport section and performs visual inspection on the workpiece located on the first transport section; a light-transmitting area is positioned between the first and second transport sections, and a second camera is positioned below the light-transmitting area and performs visual inspection on the workpiece located on the light-transmitting area. In use, the workpiece is first placed on the first transport section, where it undergoes appearance inspection by the first camera. After inspection, the conveyor belt of the first transport section transports the workpiece to the light-transmitting area, where it undergoes appearance inspection by the second camera. After inspection, the conveyor belt of the second transport section removes the workpiece from the inspection device.

[0007] In one possible implementation, the light-transmitting area is provided with a support layer made of transparent material, and the support layer is connected to the first conveying section and the second conveying section; the transparent material includes light-transmitting glass, transparent plastic panels, etc.

[0008] In one possible implementation, the horizontal height of the end of the second conveying section connected to the light-transmitting area is lower than the horizontal height of the end of the first conveying section connected to the light-transmitting area, and the light-transmitting area is inclined relative to the horizontal plane; when the workpiece is located between the first conveying section and the light-transmitting area, the workpiece naturally slides to the light-transmitting area under the action of gravity and has the tendency to continue sliding to the second conveying section. After the workpiece is inspected in the light-transmitting area, the conveyor belt of the second conveying section transports the workpiece out of the inspection device.

[0009] In one possible implementation, the rejection mechanism includes a first rejection mechanism located near the first conveying section and a second rejection mechanism located near the second conveying section; the first rejection mechanism is signal-connected to the first camera, and the second rejection mechanism is signal-connected to the second camera. When the first camera detects the appearance of the workpiece and determines that it is unqualified, it sends a detection signal, and the first rejection mechanism receives the signal and rejects the workpiece from the conveying path; when the first camera detects the appearance of the workpiece and determines that it is qualified, the workpiece continues to be transported to the light-transmitting area; if the second camera detects the appearance of the workpiece and determines that it is unqualified, the second rejection mechanism rejects the workpiece from the conveying path; if the second camera detects the appearance of the workpiece and determines that it is qualified, the second conveying section transports the workpiece out of the detection device.

[0010] The image collection and information processing method for inspecting the appearance of a workpiece and determining whether the inspection is qualified by using a visual inspection camera is existing technology. Those skilled in the art can implement it by purchasing existing inspection equipment or by referring to relevant patents and reference books, which will not be elaborated here.

[0011] In one possible implementation, the first rejection mechanism includes a first air blowing device with the air outlet facing the first conveying section, and the second rejection mechanism includes a second air blowing device with the air outlet facing the second conveying section. The air blowing device blows out unqualified workpieces from the conveying path, which is beneficial for timely detection and rejection of unqualified workpieces.

[0012] In one possible implementation, the system further includes a rack, to which the visual inspection camera is connected via an adjustment assembly; the adjustment assembly includes a mounting bracket, a fill light, a first adjustment bracket, and a second adjustment bracket; the mounting bracket is connected to the rack, the visual inspection camera is detachably connected to the mounting bracket via the first adjustment bracket, and the fill light is detachably connected to the mounting bracket via the second adjustment bracket.

[0013] Furthermore, the adjustment assembly also includes a longitudinally arranged third adjustment frame and a vertically arranged fourth adjustment frame. The mounting frame is vertically arranged, the third adjustment frame is connected to the mounting frame and its vertical connection position is adjustable, and the fourth adjustment frame is connected to the third adjustment frame and its longitudinal connection position is adjustable. The first adjustment frame is connected to the fourth adjustment frame and its vertical connection position with the fourth adjustment frame is adjustable, and the second adjustment frame is connected to the fourth adjustment frame and its vertical connection position with the fourth adjustment frame is adjustable.

[0014] Furthermore, the first adjustment frame is arranged horizontally, and the visual inspection camera is connected to the first adjustment frame and its connection position with the first adjustment frame in the horizontal direction is adjustable; the second adjustment frame is arranged horizontally, and the supplementary light is arranged between the visual inspection camera and the transport mechanism, and the supplementary light is connected to the second adjustment frame and its connection position with the second adjustment frame in the horizontal direction is adjustable.

[0015] The above structure allows for positional adjustment of the visual inspection camera and the supplementary light in three directions: vertical, horizontal, and longitudinal. This facilitates adjusting the position or relative position of the visual inspection camera and the supplementary light according to actual conditions, thereby achieving better inspection results. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the detection device provided by this utility model; Figure 2 for Figure 1 Another structural diagram of the detection device; Figure 3 for Figure 1 Front view of the detection device; Figure 4 for Figure 1 A schematic diagram of the adjustment component structure of the detection device.

[0017] In the diagram, 1. First material conveying section; 11. First camera; 12. First adjustment component; 121. Mounting frame; 122. Fill light; 123. First adjustment frame; 124. Second adjustment frame; 125. Third adjustment frame; 126. Fourth adjustment frame; 13. First rejection mechanism; 2. Second material conveying section; 21. Second camera; 23. Second rejection mechanism; 24. Light-transmitting area; 3. Frame. Detailed Implementation

[0018] First, those skilled in the art should understand that the following embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0019] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0020] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] To make the objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 4 As shown, this embodiment provides a detection device, including a visual inspection camera, a rejection mechanism, and a transport mechanism for transporting workpieces. The visual inspection camera includes a first camera 11 disposed above the transport path of the transport mechanism and a second camera 21 disposed below the transport path. A light-transmitting area 24 is provided on the transport path of the transport mechanism, and the second camera 21 faces the light-transmitting area 24. The rejection mechanism is used to reject workpieces that fail visual inspection from the transport path.

[0023] Specifically, the transport mechanism includes a first transport section 1, a light-transmitting area 24, and a second transport section 2 connected to each other. Both the first transport section 1 and the second transport section 2 are equipped with conveyor belts. The first camera 11 is positioned above the first transport section 1 and performs visual inspection on the workpiece located on the first transport section 1. The light-transmitting area 24 is positioned between the first transport section 1 and the second transport section 2, and the second camera 21 is positioned below the light-transmitting area 24 and performs visual inspection on the workpiece located on the light-transmitting area 24.

[0024] In use, the workpiece is first placed on the first conveying section 1 and its appearance is inspected by the first camera. After inspection, the conveyor belt of the first conveying section 1 transports the workpiece to the light-transmitting area 24, where its appearance is inspected by the second camera. After inspection, the conveyor belt of the second conveying section 2 transports the workpiece out of the inspection device.

[0025] In one embodiment, the light-transmitting area 24 is provided with a support layer made of transparent material, the support layer being connected to the first conveying section 1 and the second conveying section 2, the transparent material including light-transmitting glass, transparent plastic panel, etc.

[0026] In one embodiment, the horizontal height of the end of the second conveying section 2 connected to the light-transmitting area 24 is lower than the horizontal height of the end of the first conveying section 1 connected to the light-transmitting area 24. The light-transmitting area 24 is inclined relative to the horizontal plane. During transportation, when the workpiece is located between the first conveying section 1 and the light-transmitting area 24, the workpiece naturally slides down to the light-transmitting area 24 under the action of gravity and has the tendency to continue sliding down to the second conveying section 2. After the workpiece is inspected in the light-transmitting area, the conveyor belt of the second conveying section 2 transports the workpiece out of the inspection device.

[0027] In one embodiment, the rejection mechanism includes a first rejection mechanism 13 located near the first material conveying section 1 and a second rejection mechanism 23 located near the second material conveying section 2; the first rejection mechanism 13 is signal-connected to the first camera 11, and the second rejection mechanism 23 is signal-connected to the second camera 21.

[0028] When the first camera 11 detects the appearance of the workpiece and determines that the detection is unqualified, it sends a detection signal. The first rejection mechanism 13 receives the signal and rejects the workpiece from the conveying path. When the first camera 11 detects the appearance of the workpiece and determines that the detection is qualified, the workpiece continues to be transported to the light-transmitting area. If the second camera 21 detects the appearance of the workpiece and determines that the detection is unqualified, the second rejection mechanism 23 rejects the workpiece from the conveying path. If the second camera 21 detects the appearance of the workpiece and determines that the detection is qualified, the second conveying section 2 transports the workpiece out of the detection device.

[0029] In one embodiment, the first rejection mechanism 13 includes a first air blowing device with the air blowing port facing the first conveying section 1, and the second rejection mechanism 23 includes a second air blowing device with the air blowing port facing the second conveying section 2. The air blowing device blows out unqualified workpieces from the conveying path, which is beneficial for timely detection and rejection of unqualified workpieces.

[0030] In one embodiment, the system further includes a frame 3, and the first camera 11 is connected to the frame 3 via a first adjustment component 12. The first adjustment component 12 includes a mounting bracket 121, a fill light 122, a first adjustment bracket 123, and a second adjustment bracket 124. The mounting bracket 121 is connected to the frame 3, the visual inspection camera is detachably connected to the mounting bracket 121 via the first adjustment bracket 123, and the fill light 122 is detachably connected to the mounting bracket 121 via the second adjustment bracket 124.

[0031] Furthermore, the first adjustment component 12 also includes a longitudinally arranged third adjustment frame 125 and a vertically arranged fourth adjustment frame 126. The mounting frame 121 is vertically arranged. The third adjustment frame 125 is connected to the mounting frame 121 and its vertical connection position is adjustable. The fourth adjustment frame 126 is connected to the third adjustment frame 125 and its longitudinal connection position is adjustable. Furthermore, the first adjusting frame 123 is connected to the fourth adjusting frame 126 and its vertical connection position with the fourth adjusting frame 126 is adjustable, and the second adjusting frame 124 is connected to the fourth adjusting frame 126 and its vertical connection position with the fourth adjusting frame 126 is adjustable.

[0032] Furthermore, the first adjustment frame 123 is arranged horizontally, and the visual inspection camera is connected to the first adjustment frame 123 and its horizontal connection position with the first adjustment frame 123 is adjustable; the second adjustment frame 124 is arranged horizontally, and the supplementary light 122 is arranged between the visual inspection camera and the transport mechanism, and the supplementary light 122 is connected to the second adjustment frame 124 and its horizontal connection position with the second adjustment frame 124 is adjustable.

[0033] In this embodiment, the adjustment frame includes an adjustment rod and an adjustment block. The adjustment block has an adjustment hole through which the adjustment rod passes, and the axial position of the adjustment rod relative to the adjustment hole is adjustable. Some adjustment blocks have at least two adjustment holes, and the center lines of the two adjustment holes on the same adjustment block are not parallel. Such adjustment blocks are used to connect two adjustment rods, thereby adjusting the relative position of the two adjustment rods connected to the same adjustment block.

[0034] In this embodiment, the first camera 11 is connected to the frame 3 through the first adjustment component 12, and the second camera 21 is connected to the frame 3 through a mounting base. The mounting base is detachably connected to the frame 3 through a slotted hole and bolts.

[0035] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0036] In the description of this application, the reference to terms such as "this embodiment," "an embodiment," etc., means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An inspection apparatus comprising a vision inspection camera, a reject mechanism, a transport mechanism for transporting a workpiece, characterised in that: The visual inspection camera includes a first camera (11) disposed above the material transport path of the transport mechanism and a second camera (21) disposed below the material transport path. The material transport path of the transport mechanism is provided with a light-transmitting area (24), and the second camera (21) faces the light-transmitting area (24). The rejection mechanism is used to reject workpieces that fail visual inspection from the material transport path.

2. The detection device of claim 1, wherein: The transport mechanism includes a first transport section (1) and a second transport section (2) connected to each other, and a light-transmitting area (24). Both the first transport section (1) and the second transport section (2) are equipped with conveyor belts. The first camera (11) is positioned above the first material conveying section (1) and performs visual inspection on the workpiece located on the first material conveying section (1); The light-transmitting area (24) is located between the first material conveying section (1) and the second material conveying section (2), and the second camera (21) is located below the light-transmitting area (24) to perform visual inspection on the workpiece located in the light-transmitting area (24).

3. The detection device of claim 2, wherein: The light-transmitting area (24) is provided with a support layer made of transparent material, and the support layer is connected to the first material conveying section (1) and the second material conveying section (2).

4. The detection device of claim 2, wherein: The horizontal height of the end of the second material conveying section (2) connected to the light-transmitting area (24) is lower than the horizontal height of the end of the first material conveying section (1) connected to the light-transmitting area (24), and the light-transmitting area (24) is inclined relative to the horizontal plane.

5. The detection device of claim 2, wherein: The material rejection mechanism includes a first material rejection mechanism (13) located near the first material conveying section (1) and a second material rejection mechanism (23) located near the second material conveying section (2). The first rejection mechanism (13) is connected to the first camera (11) via signal, and the second rejection mechanism (23) is connected to the second camera (21) via signal.

6. The detection device of claim 5, wherein: The first rejection mechanism (13) includes a first air blowing device with the air blowing port facing the first material conveying section (1), and the second rejection mechanism (23) includes a second air blowing device with the air blowing port facing the second material conveying section (2).

7. The detection device according to any one of claims 1 to 6, characterized in that: It also includes a rack (3), on which the visual inspection camera is connected via an adjustment assembly; The adjustment assembly includes a mounting bracket (121), a supplementary light (122), a first adjustment bracket (123), and a second adjustment bracket (124). The mounting bracket (121) is connected to the frame (3). The visual inspection camera is detachably connected to the mounting bracket (121) via the first adjustment bracket (123). The fill light (122) is detachably connected to the mounting bracket (121) via the second adjustment bracket (124).

8. The detection device of claim 7, wherein: The adjustment assembly further includes a third adjustment frame (125) arranged longitudinally and a fourth adjustment frame (126) arranged vertically. The mounting frame (121) is arranged vertically. The third adjustment frame (125) is connected to the mounting frame (121) and its vertical connection position is adjustable. The fourth adjustment frame (126) is connected to the third adjustment frame (125) and its longitudinal connection position is adjustable. The first adjustment frame (123) is connected to the fourth adjustment frame (126) and the vertical connection position of the second adjustment frame (124) is also adjustable.

9. The detection device of claim 7, wherein: The first adjustment frame (123) is arranged horizontally, and the visual inspection camera is connected to the first adjustment frame (123) and the connection position of the camera to the first adjustment frame (123) in the horizontal direction is adjustable; The second adjustment frame (124) is arranged horizontally, and the supplementary light (122) is arranged between the visual inspection camera and the transport mechanism. The supplementary light (122) is connected to the second adjustment frame (124) and the connection position of the supplementary light (122) with the second adjustment frame (124) in the horizontal direction is adjustable.

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