Product forming defect visual inspection equipment

Abstract

The utility model discloses product forming defect visual inspection equipment, and particularly relates to the technical field of inspection equipment, which comprises a support frame, a plurality of first electric telescopic rods are fixedly arranged at the bottom of the support frame, a conveyor belt is arranged on one side of the support frame, and a conveying mechanism is arranged at the top of the support frame. The conveying mechanism comprises two small fixing frames fixedly arranged at the top of the supporting frame, small electric telescopic rods are fixedly arranged in the two small fixing frames, inclined guide plates are fixedly arranged at the output ends of the small electric telescopic rods, and two large fixing frames are fixedly arranged at the top of the supporting frame; large electric telescopic rods are fixedly arranged in the two large fixing frames. The conveying path can be flexibly adjusted according to the size of a product, the rubber layer can protect the product and assist in positioning, it is effectively ensured that the product is stably and accurately conveyed to a detection area, and the detection efficiency and accuracy are integrally improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and more specifically, to a visual inspection device for product molding defects. Background Technology

[0002] The production of some complex product parts requires multiple processes. For example, automotive stamping parts are essential components in various automobiles. Due to the material itself or the processing technology, defects such as incomplete welding, incorrect welding, multiple welding, wrong welding, and incomplete flanging may occur during the production process. These defects will lead to the scrapping of automotive stamping parts during subsequent assembly and final assembly. Therefore, stamping parts need to be inspected at each process.

[0003] Currently, inspection mainly relies on molds and manual visual inspection. Each set of molds and fixtures is expensive, and many defective molds cannot be inspected, increasing the company's costs. Manual inspection requires a large amount of manpower, and long-term work can easily lead to fatigue, reducing inspection efficiency. Subjective factors exist, and product quality cannot be fully guaranteed. Moreover, manual inspection is inefficient.

[0004] A search revealed that Chinese patent CN209028012U discloses a product defect visual inspection device. In this device, a turntable rotates clockwise driven by a stepper motor. A feeding device places workpieces one by one into each notch. The turntable rotates to the first photoelectric sensor to detect the presence of a workpiece. If no workpiece is found, subsequent components remain inactive until the device returns to the feeding device for reloading. If a workpiece is present, the device rotates to the CCD inspection camera, where it takes a picture under the projected light of an illumination source. The CCD camera compares the results. If the part is good, the first cylinder activates, connecting the feeding tube to the notch, and an air gun blows air into the feeding tube, completing the good part unloading. If the part is defective, the first cylinder does not activate, and the device continues to rotate to the second cylinder. The second cylinder activates, causing the baffle at the second cylinder to retract, connecting the feeding tube to the notch, and an air gun blows air into the feeding tube, completing the defective part unloading.

[0005] However, in actual use, the stepper motor drives the turntable to rotate, and the workpieces are placed one by one into the notches on the surface of the turntable for feeding. Since the size of the notches on the surface of the turntable is fixed, only workpieces of the same size can be inspected, resulting in a limited size of workpieces that can be inspected. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a visual inspection device for product molding defects to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A visual inspection device for product forming defects includes a support frame, a plurality of first electric telescopic rods fixedly installed at the bottom of the support frame, a conveyor belt installed on one side of the support frame, and a conveying mechanism installed at the top of the support frame.

[0009] The conveying mechanism includes two small fixed frames fixedly mounted on the top of the support frame. Each of the two small fixed frames has a small electric telescopic rod fixedly mounted inside. The output end of each small electric telescopic rod has an inclined guide plate fixedly mounted. The top of the support frame has two large fixed frames fixedly mounted on the top of the support frame. Each of the two large fixed frames has a large electric telescopic rod fixedly mounted inside. The output end of each large electric telescopic rod has a guide plate fixedly mounted. A rubber layer is fixedly mounted on one side of both the inclined guide plate and the guide plate. One end of the inclined guide plate is connected to one end of the guide plate. The large fixed frames are located on one side of the small fixed frames.

[0010] By adopting the above technical solution: large and small electric telescopic rods are combined with inclined guide plates and guide plates, the conveying path can be flexibly adjusted according to the product size, and the rubber layer can protect the product and assist in positioning, effectively ensuring that the product is conveyed to the testing area smoothly and accurately, which helps to improve the testing efficiency and accuracy.

[0011] As a further description of the above technical solution: A U-shaped frame is fixedly installed on the top of the support frame, and two second electric telescopic rods are fixedly installed on the inner wall of the U-shaped frame. A positioning plate is fixedly installed on one side of each of the two second electric telescopic rods. A silicone layer is fixedly installed on one side of the positioning plate. A CCD detection camera is fixedly installed on one side of the U-shaped frame. An LED light is fixedly installed on one side of the CCD detection camera. A photoelectric sensor is fixedly installed on one side of the LED light. A controller is fixedly installed on one side of the U-shaped frame.

[0012] By adopting the above technical solution: the CCD inspection camera can capture images of the product appearance, the LED lights provide good illumination, the photoelectric sensor accurately triggers the inspection process, and the controller coordinates the work of each component in a unified manner, realizing automated and orderly product inspection operations, and improving the efficiency and quality of product forming defect detection as a whole.

[0013] As a further description of the above technical solution: A sorting mechanism is provided on one side of the U-shaped frame. The sorting mechanism includes a sorting frame fixedly disposed on one side of the U-shaped frame. A support plate is fixedly disposed on one side of the sorting frame. A stepper motor is fixedly disposed on the top of the support plate. A threaded shaft is fixedly disposed on the output end of the stepper motor. One end of the threaded shaft is rotatably connected to the inner wall of the sorting frame through the frame. A sorting plate is threadedly connected to the outside of the threaded shaft. A limit block is fixedly disposed on the top of the sorting plate. The limit block is slidably connected to the sorting frame.

[0014] By adopting the above technical solution, a stepper motor drives the threaded shaft to rotate, which in turn moves the threaded sorting plate to push out defective products, thus achieving automated sorting and improving sorting efficiency. The limit block on the sorting plate is slidably connected to the sorting frame, which ensures that the sorting plate moves smoothly and accurately, guarantees the accuracy of sorting operations, effectively assists in product quality control, and improves the orderliness of the overall production process.

[0015] As a further description of the above technical solution: a collection box is provided on one side of the sorting frame, a second photoelectric sensor is fixedly provided on one side of the sorting frame, a protrusion is fixedly provided on one side of the sorting frame, and two third electric telescopic rods are fixedly provided at the bottom of the protrusion, with baffles fixedly provided at the bottom of each of the two third electric telescopic rods.

[0016] By adopting the above technical solution, the third electric telescopic rod and baffle can be flexibly adjusted as needed to assist in blocking and guiding products, avoid deviation of products during the sorting process, and ensure that the sorting work is carried out smoothly and accurately.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] By setting up a conveying mechanism, compared with existing technologies, the overall height of the equipment can be flexibly adjusted through the first electric telescopic rod, which facilitates connection with production lines of different heights and ensures smooth product flow. Moreover, the small and large electric telescopic rods are used to synchronously adjust the inclined guide plate and the guide plate to adapt to products of different sizes, effectively guide product conveying, reduce deviation, and facilitate subsequent inspection of workpieces of different sizes. Furthermore, the photoelectric sensor, in conjunction with the second electric telescopic rod, can accurately position the product, providing a stable premise for subsequent inspection and improving inspection accuracy. Overall, it realizes automated and precise product conveying and positioning, can efficiently detect product forming defects, improve product quality control, reduce human operation errors, and improve production efficiency.

[0019] By setting up a sorting mechanism, compared with existing technologies, when defective products are detected, the controller coordinates the actions of various components to precisely control the second electric telescopic rod to release the positioning plate. The conveyor belt delivers the product to the top of the sorting box, and the stepper motor drives the threaded shaft to rotate, causing the sorting plate to move, thus realizing the automatic push and collection of defective products. The whole process is highly automated, improving sorting efficiency. On the other hand, the third electric telescopic rod and the baffle can be adjusted in position as needed to assist in blocking and guiding products, further ensuring that defective products can accurately enter the collection box, effectively avoiding sorting errors, improving the accuracy of product sorting, and ensuring the reliable implementation of product quality control on the entire production line. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a top view schematic diagram of the overall structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the conveying mechanism of this utility model.

[0023] Figure 4 This is a schematic diagram of the sorting mechanism of this utility model.

[0024] Figure 5 This is a schematic diagram of the overall rear view structure of this utility model.

[0025] The attached figures are labeled as follows: 1. Support frame; 2. First electric telescopic rod; 3. Conveyor belt; 4. Small fixed frame; 5. Small electric telescopic rod; 6. Inclined guide plate; 7. Large fixed frame; 8. Large electric telescopic rod; 9. Guide plate; 10. Rubber layer; 11. U-shaped frame; 12. Second electric telescopic rod; 13. Positioning plate; 14. Silicone layer; 15. CCD detection camera; 16. LED light; 17. First photoelectric sensor; 18. Sorting frame; 19. Support plate; 20. Stepper motor; 21. Threaded shaft; 22. Sorting plate; 23. Collection box; 24. Protrusion; 25. Third electric telescopic rod; 26. Baffle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The embodiments disclosed in this application are as follows: Figure 1-5 The product forming defect visual inspection equipment shown includes a support frame 1, a plurality of first electric telescopic rods 2 are fixedly installed at the bottom of the support frame 1, a conveyor belt 3 is installed on one side of the support frame 1, and a conveying mechanism is installed at the top of the support frame 1.

[0028] The conveying mechanism includes two small fixed frames 4 fixedly mounted on the top of the support frame 1. Each small fixed frame 4 has a small electric telescopic rod 5 fixedly mounted inside. An inclined guide plate 6 is fixedly mounted at the output end of each small electric telescopic rod 5. Two large fixed frames 7 are fixedly mounted on the top of the support frame 1. Each large fixed frame 7 has a large electric telescopic rod 8 fixedly mounted inside. A guide plate 9 is fixedly mounted at the output end of each large electric telescopic rod 8. A rubber layer 10 is fixedly mounted on one side of both the inclined guide plate 6 and the guide plate 9. One end of the inclined guide plate 6 is connected to one end of the guide plate 9. The large fixed frames 7 are located on one side of the small fixed frames 4. Operators can adjust the extension and retraction of multiple first electric telescopic rods 2 at the bottom of the support frame 1 using a controller, according to the requirements of the actual production environment. If the overall height of the production line is high, the electric telescopic rods 2 can be extended to increase the overall height of the equipment; conversely, if it needs to connect with a lower conveyor belt, the electric telescopic rods 2 can be shortened to ensure that the conveyor belt 3 is at a suitable docking height with the upstream and downstream conveying equipment, ensuring that products can smoothly enter and leave the testing equipment.

[0029] Next, the controller controls the small electric telescopic rod 5 and the large electric telescopic rod 8 to perform corresponding telescopic actions based on the actual size and shape information of the product. The controller initiates the synchronous telescopic adjustment of the small electric telescopic rod 5 and the large electric telescopic rod 8, so that the inclined guide plate 6 and the guide plate 9 are moved to the appropriate position, ensuring that the product can pass smoothly and will not deviate due to the excessive distance between the two guide plates 9, thus better guiding the product. Then, the staff places the product to be tested at the beginning of the conveyor belt 3. The conveyor belt 3 starts to run at a constant speed under the drive of the external motor, and transports the product along the conveyor belt 3 to the testing area at the preset speed. With the assistance of the rubber layer 10, the product moves accurately to the testing area along the adjusted path.

[0030] Reference Figure 2-3As shown, a U-shaped frame 11 is fixedly installed on the top of the support frame 1. Two second electric telescopic rods 12 are fixedly installed on the inner wall of the U-shaped frame 11. A positioning plate 13 is fixedly installed on one side of each of the two second electric telescopic rods 12. A silicone layer 14 is fixedly installed on one side of the positioning plate 13. A CCD detection camera 15 is fixedly installed on one side of the U-shaped frame 11. An LED light 16 is fixedly installed on one side of the CCD detection camera 15. A photoelectric sensor 17 is fixedly installed on one side of the LED light 16. A controller is fixedly installed on one side of the U-shaped frame 11. When the product is conveyed by the conveyor belt 3 to the corresponding detection area below the U-shaped frame 11, the photoelectric sensor 17 detects the arrival of the product and immediately sends a trigger signal to the controller. After receiving the signal, the controller controls the conveyor belt 3 to stop moving and drives the two second electric telescopic rods 12 on the inner wall of the U-shaped frame 11 to extend synchronously, driving the positioning plate 13 to move from both sides toward the product until the silicone layer 14 on one side of the positioning plate 13 gently contacts and firmly fixes the product, so that the product is in a precise positioning state in the detection area, preparing for subsequent accurate detection.

[0031] As the product positioning is completed, the controller first controls the LED light 16 to light up according to the preset program, providing a bright and uniform lighting environment for the detection area, making the product surface details clearly visible. Then, under the trigger of the controller, the CCD inspection camera 15 acquires images of the positioned product according to the preset acquisition parameters, and performs image processing on the product's appearance image information.

[0032] Reference Figure 4-5 As shown, a sorting mechanism is provided on one side of the U-shaped frame 11. The sorting mechanism includes a sorting frame 18 fixedly installed on one side of the U-shaped frame 11. A support plate 19 is fixedly installed on one side of the sorting frame 18. A stepper motor 20 is fixedly installed on the top of the support plate 19. A threaded shaft 21 is fixedly installed at the output end of the stepper motor 20. One end of the threaded shaft 21 is rotatably connected to the inner wall of the sorting frame 18 through the sorting frame 18. A sorting plate 22 is threadedly connected to the outside of the threaded shaft 21. A limit block is fixedly installed on the top of the sorting plate 22. The limit block is slidably connected to the sorting frame 18. The controller continuously receives detection result information from the image processing feedback. If the product is determined to be a qualified product, the controller controls the second electric telescopic rod 12 to retract, so that the positioning plate 13 releases the product. The conveyor belt 3 continues to run, and the product leaves the detection area along the conveyor belt 3 and enters the next production process.

[0033] If a product is determined to be defective, the controller controls the second electric telescopic rod 12 to retract, causing the positioning plate 13 to release the product. The conveyor belt 3 continues to run, moving the product to the top of the sorting box 18, where the arrival of the product is detected by the second photoelectric sensor.

[0034] Reference Figure 5As shown, a collection box 23 is provided on one side of the sorting frame 18, a second photoelectric sensor is fixedly provided on one side of the sorting frame 18, a protrusion 24 is fixedly provided on one side of the sorting frame 18, and two third electric telescopic rods 25 are fixedly provided at the bottom of the protrusion 24. Baffles 26 are fixedly provided at the bottom of each of the two third electric telescopic rods 25. The controller controls the stepper motor 20 to start rotating, driving the threaded shaft 21 to rotate, so that the sorting plate 22 moves on the threaded shaft 21 toward the collection box 23, pushing the unqualified products in the sorting frame 18 into the collection box 23 for collection. During this process, according to the actual situation, the controller can also control the third electric telescopic rods 25 to extend and retract, driving the baffles 26 to adjust their positions, assisting in blocking and guiding the products, and ensuring that unqualified products can be accurately sorted into the collection box 23.

[0035] Working principle of this utility model:

[0036] This utility model is a visual inspection device for product forming defects. When using the device, the operator adjusts the extension and retraction of multiple first electric telescopic rods 2 at the bottom of the support frame 1 by operating the controller according to the requirements of the actual production environment. If the overall height of the production line is high, the electric telescopic rods 2 can be extended to increase the overall height of the equipment; conversely, if it is necessary to connect with a lower conveyor belt, the electric telescopic rods 2 can be shortened so that the conveyor belt 3 is at a suitable docking height with the upstream and downstream conveying equipment, ensuring that the products can smoothly enter and leave the inspection equipment.

[0037] Next, the controller controls the small electric telescopic rod 5 and the large electric telescopic rod 8 to perform corresponding telescopic actions based on the actual size and shape information of the product. The controller starts the small electric telescopic rod 5 and the large electric telescopic rod 8 to perform synchronous telescopic adjustments, so that the inclined guide plate 6 and the guide plate 9 move to the appropriate position, ensuring that the product can pass smoothly and will not deviate due to the excessive distance between the two guide plates 9, thus better guiding the product. Then, the staff places the product to be tested at the starting end of the conveyor belt 3. The conveyor belt 3 starts to run at a constant speed under the drive of the external motor, and transports the product along the conveyor belt 3 to the testing area at the preset speed. With the assistance of the rubber layer 10, the product moves accurately to the testing area along the adjusted path.

[0038] When the product is conveyed by the conveyor belt 3 to the corresponding detection area below the U-shaped frame 11, the photoelectric sensor 17 detects the arrival of the product and immediately sends a trigger signal to the controller. After receiving the signal, the controller controls the conveyor belt 3 to stop moving and drives the two second electric telescopic rods 12 on the inner wall of the U-shaped frame 11 to extend synchronously, driving the positioning plate 13 to move from both sides toward the product until the silicone layer 14 on one side of the positioning plate 13 gently contacts and firmly fixes the product, so that the product is in a precise positioning state in the detection area, preparing for subsequent accurate detection.

[0039] As the product positioning is completed, the controller first controls the LED light 16 to light up according to the preset program, providing a bright and uniform lighting environment for the detection area, making the product surface details clearly visible. Then, under the trigger of the controller, the CCD inspection camera 15 acquires images of the positioned product according to the preset acquisition parameters, obtains the product's appearance image information and performs image processing. The software performs preprocessing operations such as noise reduction and contrast enhancement on the image according to various built-in image processing algorithms, and then extracts various feature information in the image, such as edges, textures, shapes, and sizes, and performs a comprehensive and detailed comparative analysis with the standard product features stored in the system database to determine whether the product has forming defects and to determine the type, location, and size of the defects. This is existing technology and will not be described in detail in this technical solution.

[0040] The controller continuously receives detection result information from image processing feedback. If the product is determined to be a qualified product, the controller controls the second electric telescopic rod 12 to retract, causing the positioning plate 13 to release the product. The conveyor belt 3 continues to run, and the product leaves the detection area along the conveyor belt 3 and enters the next production process.

[0041] If a product is determined to be defective, the controller controls the second electric telescopic rod 12 to retract, causing the positioning plate 13 to release the product. The conveyor belt 3 continues to run, moving the product to the top of the sorting box 18. The arrival of the product is detected by the second photoelectric sensor, causing the controller to control the stepper motor 20 to start rotating, driving the threaded shaft 21 to rotate. This causes the sorting plate 22 to move along the threaded shaft 21 towards the collection box 23, pushing the defective product in the sorting box 18 into the collection box 23 for collection. During this process, depending on the actual situation, the controller can also control the third electric telescopic rod 25 to extend and retract, driving the baffle 26 to adjust its position, assisting in blocking and guiding the product, ensuring that the defective product can be accurately sorted into the collection box 23.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A visual inspection device for product molding defects, comprising a support frame (1), characterized in that: The bottom of the support frame (1) is fixedly provided with a plurality of first electric telescopic rods (2), a conveyor belt (3) is provided on one side of the support frame (1), and a conveying mechanism is provided on the top of the support frame (1). The conveying mechanism includes two small fixed frames (4) fixedly installed on the top of the support frame (1). A small electric telescopic rod (5) is fixedly installed inside each of the two small fixed frames (4). An inclined guide plate (6) is fixedly installed at the output end of the small electric telescopic rod (5). Two large fixed frames (7) are fixedly installed on the top of the support frame (1). A large electric telescopic rod (8) is fixedly installed inside each of the two large fixed frames (7). A guide plate (9) is fixedly installed at the output end of the large electric telescopic rod (8). A rubber layer (10) is fixedly installed on one side of the inclined guide plate (6) and the guide plate (9).

2. The product molding defect visual inspection equipment according to claim 1, characterized in that: One end of the inclined guide plate (6) is connected to one end of the guide plate (9), and the large fixed frame (7) is set on one side of the small fixed frame (4).

3. The product molding defect visual inspection equipment according to claim 1, characterized in that: A U-shaped frame (11) is fixedly installed on the top of the support frame (1). Two second electric telescopic rods (12) are fixedly installed on the inner wall of the U-shaped frame (11). A positioning plate (13) is fixedly installed on one side of each of the two second electric telescopic rods (12). A silicone layer (14) is fixedly installed on one side of the positioning plate (13).

4. The product molding defect visual inspection equipment according to claim 3, characterized in that: A CCD detection camera (15) is fixedly installed on one side of the U-shaped frame (11), an LED light (16) is fixedly installed on one side of the CCD detection camera (15), a photoelectric sensor (17) is fixedly installed on one side of the LED light (16), and a controller is fixedly installed on one side of the U-shaped frame (11).

5. The product molding defect visual inspection equipment according to claim 3, characterized in that: A sorting mechanism is provided on one side of the U-shaped frame (11). The sorting mechanism includes a sorting frame (18) fixedly disposed on one side of the U-shaped frame (11). A support plate (19) is fixedly disposed on one side of the sorting frame (18). A stepper motor (20) is fixedly disposed on the top of the support plate (19). A threaded shaft (21) is fixedly disposed at the output end of the stepper motor (20). One end of the threaded shaft (21) is rotatably connected to the inner wall of the sorting frame (18) through it. A sorting plate (22) is threadedly connected to the outside of the threaded shaft (21). A limit block is fixedly disposed on the top of the sorting plate (22). The limit block is slidably connected to the sorting frame (18).

6. The product molding defect visual inspection equipment according to claim 5, characterized in that: A collection box (23) is provided on one side of the sorting frame (18), a second photoelectric sensor is fixedly provided on one side of the sorting frame (18), and a protrusion (24) is fixedly provided on one side of the sorting frame (18).

7. The product molding defect visual inspection equipment according to claim 6, characterized in that: Two third electric telescopic rods (25) are fixedly installed at the bottom of the protrusion (24), and baffles (26) are fixedly installed at the bottom of the two third electric telescopic rods (25).

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