Workpiece surface defect quality detection line

Abstract

This invention discloses a workpiece surface defect quality inspection line, comprising two sets of inspection lines spaced apart, with a flipping mechanism between them. The flipping mechanism flips the workpiece on one inspection line and places it on the other inspection line. Robotic arms are mounted on both sides of the inspection lines, with their output ends connected to inspection cameras. The inspection line includes a frame with two sets of first conveying mechanisms spaced apart vertically. Lifting mechanisms are mounted on both sides of the inspection lines. Each lifting mechanism includes a frame with a vertically movable lifting platform. A second conveying mechanism is mounted on the lifting platform, transporting positioning fixtures from the second platform to the first conveying mechanism. This invention solves the problems of existing inspection lines that use two independent inspection lines to inspect the front and back sides separately, resulting in large equipment investment, large footprint, and the inability to return the positioning fixtures to the beginning of the inspection line for reuse after a single transport cycle.

Description

Technical Field

[0001] This invention relates to the field of surface inspection, and more specifically, to a workpiece surface defect quality inspection line. Background Technology

[0002] In modern industrial production, to ensure the corrosion resistance, wear resistance, and appearance quality of products, a large number of workpieces need to undergo coating processes such as spraying, electroplating, or chemical plating. The surface condition of the coated workpiece directly determines the final performance and pass rate of the product. Therefore, comprehensive surface defect detection of the coating layer is an indispensable and critical step before leaving the factory.

[0003] After a workpiece is coated, a comprehensive surface defect inspection of the coating layer on both sides is usually required. In existing technologies, to complete double-sided inspection, a front inspection station, a flipping mechanism, and a back inspection station are typically required. Some solutions use two independent inspection lines to inspect the front and back sides separately, which involves large equipment investment, occupies a large area, and can easily cause secondary damage to the coating layer when the workpiece is transferred between the independent inspection lines. Furthermore, during the inspection process, the workpiece is usually placed on a dedicated positioning fixture and moved forward by a conveyor mechanism. Limited by the single-layer conveyor structure of the inspection line, the positioning fixture completes a single conveying process after reaching the end of the inspection line and cannot be returned to the beginning for reuse. It must be manually handled or transported back to the beginning using additional equipment, which not only increases labor costs and equipment investment but also reduces the overall operating efficiency of the inspection line. Summary of the Invention

[0004] The purpose of this invention is to provide a workpiece surface defect quality inspection line, which solves the problems of existing inspection lines that use two independent inspection lines to inspect the front and back sides respectively, resulting in large equipment investment, large area occupation, and the positioning fixture completing a single conveying process after reaching the end of the inspection line with the conveying mechanism, making it impossible to return to the beginning for reuse online.

[0005] To achieve the above objectives, the present invention provides a workpiece surface defect quality inspection line, comprising two sets of inspection lines spaced apart, with a flipping mechanism between the two sets of inspection lines. The flipping mechanism can flip a workpiece on one side of the inspection line and place it on the other side of the inspection line. Robotic arms are provided on both sides of the inspection lines, and the output ends of the robotic arms are connected to inspection cameras. The inspection line includes a frame, with two sets of first conveying mechanisms spaced apart vertically along the frame. Lifting mechanisms are provided on both sides of the inspection line. Each lifting mechanism includes a frame body, on which a lifting platform is vertically movable. A second conveying mechanism is provided on the lifting platform, capable of conveying positioning fixtures onto the first conveying mechanism.

[0006] Preferably, the flipping mechanism includes a platform, a flipping motor mounted on the platform, a wheel connected to the output shaft of the flipping motor, a flipping frame fixed on the wheel, and a suction cup assembly mounted on the flipping frame.

[0007] Preferably, the platform is provided with two sets of rotating seats at intervals, the two wheels are rotatably mounted on the rotating seats, the flipping frame is a U-shaped structure and a portion of it is connected to the wheels, and the suction cup assemblies are respectively located at both ends of the U-shaped structure.

[0008] Preferably, the lifting mechanism further includes a lifting cylinder fixed in the frame body, which can lift the lifting platform.

[0009] Preferably, the lifting platform is connected to the frame via a slide rail assembly.

[0010] Preferably, a first blocking cylinder is provided in the detection line near the robotic arm.

[0011] Preferably, the lifting platform includes a frame, with conveyor belts respectively arranged on both sides of the frame. The pulleys of the two conveyor belts are connected by a shaft. A first sprocket is arranged on the shaft. A motor is arranged on the frame. A second sprocket is connected to the output shaft of the motor. The first sprocket and the second sprocket are connected by a chain.

[0012] Preferably, the surface of the positioning fixture is provided with a plurality of supporting positioning posts at intervals.

[0013] Preferably, a second blocking cylinder is also provided on the frame.

[0014] The core concept of the workpiece surface defect quality inspection line provided by this invention lies in constructing a highly integrated double-sided inspection production line by using two sets of inspection lines spaced apart and a flipping mechanism arranged between them. This effectively solves the prominent problems of traditional solutions, which require two independent inspection lines, resulting in large equipment investment, large footprint, and secondary damage to the coating layer when the workpiece is transferred between different lines. Furthermore, the inspection line further incorporates two sets of first conveying mechanisms spaced apart vertically on the frame, and lifting mechanisms with lifting platforms and second conveying mechanisms at both ends of the inspection line, thus forming a closed-loop return system with double-layer conveying and automatic inter-layer reversal. This design allows the positioning fixture carrying the workpiece to be automatically transferred from one layer to another via the lifting action of the lifting platform after completing the entire inspection process. This achieves online return of the fixture from the end to the beginning of the inspection line, completely eliminating the need for manual handling or additional transfer equipment in traditional solutions to send the fixture back to the starting point. This not only significantly saves labor costs but also eliminates the waiting time in the fixture return process, ensuring uninterrupted and efficient operation of the inspection line. Meanwhile, robotic arms on both sides of the inspection line work in conjunction with inspection cameras to provide a highly flexible and precise automated inspection method for coating surface defects. The robotic arms can drive the cameras to move precisely at multiple angles and positions according to inspection needs, ensuring a comprehensive scan of all kinds of minute defects on the workpiece surface. In summary, this invention achieves full automation of workpiece transportation, double-sided flipping, online inspection, and automatic tooling return in a compact layout, significantly improving the space utilization, operating efficiency, and product yield of the inspection line.

[0015] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural diagram of the workpiece surface defect quality detection line provided by the present invention; Figure 2 This is a side view of the workpiece surface defect quality detection line provided by the present invention; Figure 3 This is a structural diagram of the flipping mechanism in the workpiece surface defect quality detection line provided by the present invention; Figure 4 This is a structural diagram of the lifting platform in the workpiece surface defect quality inspection line provided by the present invention.

[0017] Explanation of reference numerals in the attached figures 1-Detection line; 2-Tilting mechanism; 3-Robotic arm; 4-Detection camera; 5-First conveying mechanism; 6-Frame; 7-Lifting mechanism; 8-Lifting platform; 9-Lifting cylinder; 10-Slide rail assembly; 11-First blocking cylinder; 21-Frame; 22-Wheel; 23-Tilting motor; 24-Tilting frame; 25-Suction cup assembly; 26-Rotating seat; 81-Frame; 82-Conveyor belt; 83-Shaft; 84-First sprocket; 85-Support positioning column; 86-Second blocking cylinder; 87-Positioning fixture. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] like Figure 1-4 As shown: This invention provides a workpiece surface defect quality inspection line, comprising two sets of inspection lines 1 spaced apart, with a flipping mechanism 2 between the two sets of inspection lines 1. The flipping mechanism 2 can flip the workpiece on one side of the inspection line 1 and place it on the other side of the inspection line 1. Robotic arms 3 are arranged on both sides of the inspection lines 1, and the output end of the robotic arms 3 is connected to an inspection camera 4. The inspection line 1 includes a frame 6, with two sets of first conveying mechanisms 5 spaced apart vertically along the frame 6. Lifting mechanisms 7 are arranged on both sides of the inspection line 1. The lifting mechanism 7 includes a frame body, on which a lifting platform 8 is vertically movable. A second conveying mechanism is arranged on the lifting platform 8, which can convey a positioning fixture 87 onto the first conveying mechanism 5. This invention constructs a compact dual-line inspection layout by using two sets of inspection lines spaced apart and arranging a flipping mechanism between them. This design allows the workpiece to be directly transferred to another inspection line for back-side inspection after the front inspection is completed via a flipping mechanism. This eliminates the need for two completely independent inspection lines, avoiding secondary damage to the coating layer that may occur when the workpiece is transferred between different lines. It significantly reduces the equipment footprint and initial investment costs, and achieves a high degree of integration of the inspection process.

[0020] In a preferred embodiment of the present invention, the flipping mechanism 2 includes a frame 21, a flipping motor 23 mounted on the frame 21, a wheel 22 connected to the output shaft of the flipping motor 23, a flipping frame 24 fixed on the wheel 22, and a suction cup assembly 25 mounted on the flipping frame 24. This flipping mechanism uses a flipping motor to drive the wheel to rotate, thereby driving the flipping frame and suction cup assembly to complete the workpiece flipping action. The overall transmission chain is short and the response is rapid, ensuring precise control of the flipping angle.

[0021] In a preferred embodiment of the present invention, in order to improve the stability of the flipping, two sets of rotating seats 26 are provided at intervals on the platform 21, and two wheels 22 are respectively rotatably disposed on the rotating seats 26. The flipping frame 24 has a U-shaped structure and a portion thereof is connected to the wheels 22 respectively. The suction cup assembly 25 is respectively disposed at both ends of the U-shaped structure.

[0022] In a preferred embodiment of the present invention, the lifting mechanism 7 further includes a lifting cylinder 9 fixed in the frame body, the lifting cylinder 9 being able to lift the lifting platform 8.

[0023] In a preferred embodiment of the present invention, in order to enable the lifting platform to move stably up and down, the lifting platform 8 is connected to the frame through a slide rail assembly 10.

[0024] In a preferred embodiment of the present invention, a first blocking cylinder 11 is provided in the detection line 1 near the robotic arm 3. The first blocking cylinder, located near the robotic arm in the detection line, can accurately block and position the positioning fixture at a preset position when it reaches the detection station, creating stable detection conditions for the robotic arm to drive the detection camera to acquire images.

[0025] In a preferred embodiment of the present invention, in order to facilitate the transport of the positioning fixture on the lifting platform 8 to the first conveying mechanism, the lifting platform 8 includes a frame 81, and conveyor belts 82 are respectively provided on both sides of the frame 81. The pulleys of the two conveyor belts 82 are connected by a shaft 83. A first sprocket 84 is provided on the shaft 83. A motor is provided on the frame 81, and a second sprocket is connected to the output shaft of the motor. The first sprocket 84 and the second sprocket are connected by a chain.

[0026] In a preferred embodiment of the present invention, the positioning fixture 87 is provided with a plurality of supporting positioning posts 85 spaced apart on its surface. The plurality of supporting positioning posts spaced apart on the surface of the positioning fixture support the workpiece in a multi-point support manner, which greatly reduces the contact area between the fixture and the workpiece coating layer, and minimizes the risk of friction and crushing to the coating surface during transportation and inspection.

[0027] In a preferred embodiment of the present invention, a second blocking cylinder 86 is further provided on the frame 81. This cylinder can accurately block and position the tooling in the center area of ​​the lifting platform, effectively preventing the tooling from sliding out of the boundary due to inertia during the lifting process.

[0028] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0029] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0030] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A workpiece surface defect quality inspection line, characterized in that, The workpiece surface defect quality inspection line includes two sets of inspection lines (1) spaced apart, and a flipping mechanism (2) is provided between the two sets of inspection lines (1). The flipping mechanism (2) can flip the workpiece on one side of the inspection line (1) and place it on the other side of the inspection line (1). Robotic arms (3) are provided on both sides of the inspection line (1), and the output end of the robotic arm (3) is connected to an inspection camera (4). The detection line (1) includes a frame (6), and the frame (6) is provided with two sets of first conveying mechanisms (5) at intervals along the vertical direction. Lifting mechanisms (7) are provided on both sides of the detection line (1). The lifting mechanism (7) includes a frame, on which a lifting platform (8) is disposed vertically. A second conveying mechanism is disposed on the lifting platform (8), which can convey the positioning fixture (87) on it to the first conveying mechanism (5).

2. The workpiece surface defect quality inspection line according to claim 1, characterized in that, The flipping mechanism (2) includes a frame (21), a flipping motor (23) mounted on the frame (21), a wheel (22) connected to the output shaft of the flipping motor (23), a flipping frame (24) fixed on the wheel (22), and a suction cup assembly (25) mounted on the flipping frame (24).

3. The workpiece surface defect quality inspection line according to claim 2, characterized in that, Two sets of rotating seats (26) are spaced apart on the platform (21). Two wheels (22) are rotatably mounted on the rotating seats (26). The flipping frame (24) is a U-shaped structure and its parts are connected to the wheels (22). The suction cup assembly (25) is located at both ends of the U-shaped structure.

4. The workpiece surface defect quality inspection line according to claim 3, characterized in that, The lifting mechanism (7) also includes a lifting cylinder (9) fixed in the frame body, which can lift the lifting platform (8).

5. The workpiece surface defect quality inspection line according to claim 4, characterized in that, The lifting platform (8) is connected to the frame via a slide rail assembly (10).

6. The workpiece surface defect quality inspection line according to claim 5, characterized in that, A first blocking cylinder (11) is provided in the detection line (1) near the robotic arm (3).

7. The workpiece surface defect quality inspection line according to claim 6, characterized in that, The lifting platform (8) includes a frame (81), and conveyor belts (82) are respectively provided on both sides of the frame (81). The pulleys of the two conveyor belts (82) are connected by a shaft (83). A first sprocket (84) is provided on the shaft (83). A motor is provided on the frame (81). A second sprocket is connected to the output shaft of the motor. The first sprocket (84) and the second sprocket are connected by a chain.

8. The workpiece surface defect quality inspection line according to claim 1, characterized in that, The positioning fixture (87) has multiple supporting positioning posts (85) spaced apart on its surface.

9. The workpiece surface defect quality inspection line according to claim 7, characterized in that, The frame (81) is also provided with a second blocking cylinder (86).

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