Intelligent visual detection device

Abstract

This utility model discloses an intelligent visual inspection device, relating to the field of automotive seat belt frame inspection technology. It includes a frame with a belt feeding conveyor and a belt unloading conveyor respectively installed on its left and right sides. An intermittent mechanism is installed inside the fixed base. The intermittent mechanism includes an active dial connected to the output of a servo motor. A cylindrical pin is located on one side of the active dial, and a grooved wheel is located on the other side. The grooved wheel has multiple radial grooves. The engagement of the cylindrical pin and the radial grooves enables intermittent rotation of the grooved wheel. Multiple workstations are evenly distributed at equal intervals above the turntable. This utility model, through this intermittent rotation method, allows the material at each workstation to sequentially complete the feeding, inspection, and unloading processes, realizing intermittent inspection and feeding / unloading of the turntable, thus improving inspection efficiency and automation.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat belt frame detection technology, specifically to an intelligent vision detection device. Background Technology

[0002] In the automotive manufacturing industry, seat belts are a key component for ensuring passenger safety. As an important part of the seat belt system, the quality and dimensional accuracy of the car seat belt frame directly affect the assembly effect and overall safety performance of the seat belt. However, manual inspection is slow and cannot meet the needs of rapid inspection on large-scale production lines, easily becoming a bottleneck in the production process. Using machine vision technology to inspect car seat belt frames can quickly and accurately acquire image information of the seat belt frame, and analyze and judge it through image processing algorithms, thereby achieving efficient and accurate inspection of the seat belt frame.

[0003] In existing testing devices, the operating table carrying the product mostly adopts a continuous rotation method to allow the product to continuously pass through the testing area in order to achieve uninterrupted and continuous testing. For example, the mobile phone screen defect testing device disclosed in patent CN221807029U includes a worktable and a turntable; several fixing slots for placing mobile phone screens are evenly arranged on the turntable along its circumference; the turntable is horizontally mounted on the worktable and is driven by a drive motor to rotate around its axis; N testing mechanisms for photographing and testing the surface of the mobile phone screen are fixed on the worktable. The testing mechanism is arranged in an arc around the turntable, and the distance between two adjacent testing mechanisms matches the distance between two adjacent fixed slots. The circular turntable allows the placement of the mobile phone screen before testing and its removal after testing to be done in the same position, saving labor. However, the turntable in this patent uses a continuous rotation method without an intermittent mechanism. During continuous rotation, the position of the material on the turntable changes constantly, making it difficult to accurately synchronize the feeding, testing, and unloading processes. The continuously rotating turntable cannot provide an independent testing time window for each station, and the material testing at different stations interferes with each other.

[0004] Therefore, it is necessary to invent an intelligent visual inspection device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent visual inspection device that solves the problem that a continuously rotating turntable cannot provide an independent inspection time window for each workstation, and that material inspections at different workstations interfere with each other.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an intelligent visual inspection device, comprising a frame, with a belt feeding conveyor and a belt unloading conveyor respectively arranged on the left and right sides of the frame. A feeding mechanism is arranged above the unloading end of the belt feeding conveyor, and a picking mechanism is arranged above the feeding end of the belt unloading conveyor. Both the feeding mechanism and the picking mechanism have movable mechanical grippers for gripping and placing materials. A fixed seat is arranged inside the frame and located on one side of the belt feeding conveyor and the belt unloading conveyor. Above the fixed seat... A turntable is provided, with a CCD detector mounted on top of the turntable. A servo motor is mounted on the bottom surface of a fixed base, and an intermittent mechanism is provided inside the fixed base. The intermittent mechanism includes an active dial connected to the output end of the servo motor. A cylindrical pin is provided on one side of the active dial, and a grooved wheel is provided on one side of the active dial. The grooved wheel has multiple radial grooves. The cooperation between the cylindrical pin and the radial grooves enables the intermittent rotation of the grooved wheel. A rotating rod is connected to the top of the grooved wheel and is connected to the center of the bottom surface of the turntable. Multiple workstations are evenly distributed at equal intervals above the turntable.

[0007] Preferably, the unloading end of the belt feeding conveyor and the loading end of the belt unloading conveyor are inside the frame, and their conveying directions are opposite. Furthermore, the unloading end and the loading end of the belt feeding conveyor extend to the outside of the frame, thereby realizing the orderly flow of materials within the device. The opposite conveying directions allow the materials to form relatively independent loading and unloading paths within the device.

[0008] Preferably, the feeding mechanism and the picking mechanism also have the following features: both include an X-axis transmission assembly and an X-axis slide plate that can move smoothly on it; a Y-axis transmission assembly is provided on the X-axis slide plate; a Y-axis slide plate is provided on the Y-axis transmission assembly; a mechanical gripper is provided on the Y-axis slide plate; the X-axis transmission assembly is a synchronous belt transmission structure; the Y-axis transmission assembly is a linear motor transmission structure; and the X-axis slide plate and the Y-axis slide plate achieve linear movement through the cooperation of a slider and a guide rail. The purpose of this two-dimensional transmission structure is to enable the mechanical gripper to move flexibly in a plane, thereby accurately gripping and placing materials.

[0009] Preferably, the mechanical gripper is a pneumatic gripper with an anti-slip silicone pad on its gripper surface. Using a pneumatic gripper as a mechanical gripper can quickly and accurately grasp and release materials, adapting to the grasping needs of materials of different sizes and shapes.

[0010] Preferably, a vertical plate is provided above the fixed base, and a hydraulic rod is provided on the top surface of the vertical plate. The CCD detector is connected to the output end of the hydraulic rod. By extending and retracting the hydraulic rod, the distance between the CCD detector and the workpiece can be adjusted so that it can adapt to the detection requirements of workpieces of different heights.

[0011] Preferably, the rollers on the bottom surface of the turntable slide in contact with the wheel grooves on the top surface of the fixed seat. The main purpose is to reduce the friction of the turntable during rotation and reduce energy consumption.

[0012] Preferably, a hopper is provided on the other side of the belt feeding conveyor and the belt unloading conveyor. The discharge port of the hopper extends to the outside of the frame. The hopper is used to collect unqualified materials or materials that require special treatment generated during the testing process.

[0013] Preferably, a PLC touch screen is provided on one side of the frame. The PLC touch screen is connected to the controllers of the servo motor, CCD detector, feeding mechanism and picking mechanism via an Ethernet interface. Operators can remotely control and monitor each component on the touch screen, which improves the automation level and intelligence of the device.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model achieves intermittent detection and feeding / unloading of the turntable through an intermittent mechanism. When the cylindrical pin enters the radial groove of the grooved wheel, it pushes the grooved wheel to rotate at a certain angle. When the cylindrical pin leaves the radial groove, the grooved wheel stops rotating, thus realizing the intermittent rotation of the grooved wheel. The turntable also rotates intermittently with the grooved wheel. Through this intermittent rotation method, the material at each station can complete the feeding, detection, and unloading process in sequence, realizing the intermittent detection and feeding / unloading of the turntable, improving detection efficiency and automation. 2. This utility model achieves efficient material flow and inspection through a production line setup. Both the feeding and picking mechanisms have movable mechanical grippers. Through the cooperation of the X-axis and Y-axis transmission components, they can move flexibly in a plane, accurately grabbing and placing materials. During the material flow process, the feeding mechanism grabs the material from the belt conveyor and places it on the turntable. The turntable rotates the material to a position below the CCD detector for inspection. After inspection, the picking mechanism grabs the material and places it in the corresponding position (belt unloading conveyor or unloading hopper) according to the inspection results. This production line setup, along with the coordinated work of the feeding, picking, and inspection mechanisms, enables materials to complete the inspection process quickly and efficiently, improving the overall production efficiency of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional cross-sectional view of the frame structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the material handling mechanism of this utility model; Figure 4This is a three-dimensional structural diagram of the CCD detector of this utility model; Figure 5 This is a three-dimensional structural diagram of the fixing base of this utility model; Figure 6 This is a three-dimensional structural diagram of the intermittent mechanism of this utility model; Figure 7 This is a schematic diagram of the product qualification classification process of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Frame; 2. PLC touch screen; 3. Belt conveyor for feeding; 4. Belt conveyor for discharging; 5. Feeding mechanism; 6. Picking mechanism; 601. X-axis transmission assembly; 602. X-axis slide plate; 603. Y-axis transmission assembly; 604. Y-axis slide plate; 605. Mechanical gripper; 7. Fixed base; 8. Vertical plate; 9. Hydraulic rod; 10. CCD detector; 11. Turntable; 12. Servo motor; 13. Intermittent mechanism; 1301. Active dial; 1302. Cylindrical pin; 1303. Grooved wheel; 1304. Radial groove; 14. Rotating rod; 15. Station; 16. Discharge hopper. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figure 1-7 The intelligent visual inspection device shown includes a frame 1. A belt conveyor 3 and a belt conveyor 4 are respectively installed on the left and right sides of the frame 1. A feeding mechanism 5 is installed above the unloading end of the belt conveyor 3, and a picking mechanism 6 is installed above the loading end of the belt conveyor 4. Both the feeding mechanism 5 and the picking mechanism 6 have movable mechanical grippers 605 for gripping and placing materials. A fixed base 7 is installed inside the frame 1 on one side of the belt conveyor 3 and the belt conveyor 4. A turntable 11 is installed above the fixed base 7, and a CCD detector 10 is installed above the turntable 11. A servo motor 12 is installed on the bottom surface of the fixed base 7. An intermittent mechanism 13 is installed inside the fixed base 7. The intermittent mechanism 13 includes an active dial 1301 connected to the output end of the servo motor 12. A cylindrical pin 1302 is provided on one side above the active dial 1301. A grooved wheel 1303 is arranged on one side of the active dial 1301. Multiple radial grooves 1304 are opened on the grooved wheel 1303. The cooperation between the cylindrical pin 1302 and the radial grooves 1304 realizes the intermittent rotation of the grooved wheel 1303. A rotating rod 14 is connected directly above the grooved wheel 1303 and is connected to the center of the bottom surface of the turntable 11. Multiple workstations 15 are evenly distributed at equal intervals above the turntable 11.

[0019] In this embodiment, the servo motor 12 starts, driving the active dial 1301 to rotate. The cylindrical pin 1302 then performs a circular motion. When the cylindrical pin 1302 enters the radial groove 1304 of the grooved wheel 1303, it pushes the grooved wheel 1303 to rotate at a certain angle, which in turn drives the turntable 11 to rotate through the rotating rod 14. When the cylindrical pin 1302 leaves the radial groove 1304, the grooved wheel 1303 stops rotating, and the turntable 11 also stops, achieving intermittent rotation. Each station 15 passes under the CCD detector 10 for detection in sequence. The intermittent rotation of the turntable 11 is achieved through the intermittent mechanism 13, so that the products on each station 15 can be orderly placed under the CCD detector 10, ensuring the accuracy and stability of the detection. The setting of multiple stations 15 can process multiple products at the same time, improving the detection efficiency and meeting the needs of large-scale production.

[0020] The unloading end of the belt feeding conveyor 3 and the loading end of the belt unloading conveyor 4 are inside the frame 1, and their conveying directions are opposite. The unloading end and loading end of the belt feeding conveyor 3 and the belt unloading conveyor 4 extend to the outside of the frame 1 respectively. A hopper 16 is provided on the other side of the belt feeding conveyor 3 and the belt unloading conveyor 4, and the discharge port of the hopper 16 extends to the outside of the frame 1.

[0021] In this embodiment, a data processing module is set on one side of the CCD detector 10 and connected to the CCD detector 10 via a data cable. Simultaneously, a controller is set on one side of the mechanical gripper 605 of the material handling mechanism 6. The data processing module and the controller establish a communication connection via a data cable, and the controller is connected to the mechanical gripper 605 via a signal cable. When the product is conveyed into the frame 1 by the belt conveyor 3, it is gripped by the feeding mechanism 5 and placed on the station 15 of the turntable 11 for inspection. After inspection, the data processing module feeds back the judgment result to the mechanical gripper 605 in the form of an electrical signal. The controller on one side of the gripper 605 allows the material handling mechanism 6 to perform corresponding operations based on the detection results fed back by the data processing module. The controller sends corresponding operation instructions to the mechanical gripper 605 based on the received judgment results. If the product is qualified, the controller controls the mechanical gripper 605 of the material handling mechanism 6 to grab the product and place it on the feeding end of the belt conveyor 4. Qualified products are output from the frame 1 through the belt conveyor 4. If the product is unqualified, the controller controls the mechanical gripper 605 to grab the product and place it in the discharge hopper 16 for further processing, thus realizing the orderly flow of products within the device.

[0022] The feeding mechanism 5 and the picking mechanism 6 also have the following features: both include an X-axis transmission assembly 601 and an X-axis slide plate 602 that can move smoothly on it. A Y-axis transmission assembly 603 is provided on the X-axis slide plate 602, a Y-axis slide plate 604 is provided on the Y-axis transmission assembly 603, and a mechanical gripper 605 is provided on the Y-axis slide plate 604. The X-axis transmission assembly 601 is a synchronous belt transmission structure, and the Y-axis transmission assembly 603 is a linear motor transmission structure. The X-axis slide plate 602 and the Y-axis slide plate 604 achieve linear movement through the cooperation of a slider and a guide rail. The mechanical gripper 605 is a pneumatic gripper, and its gripper surface is provided with an anti-slip silicone pad.

[0023] In this embodiment, during feeding, the X-axis transmission assembly 601 drives the X-axis slide plate 602 to move in the X-axis direction via a synchronous belt, and the Y-axis transmission assembly 603 drives the Y-axis slide plate 604 to move in the Y-axis direction via a linear motor. This allows the mechanical gripper 605 to accurately reach the product position on the belt conveyor 3. The mechanical gripper 605 grabs the product and then places it on the station 15 of the turntable 11 through a two-dimensional transmission structure. The material handling process is similar. The mechanical gripper 605 grabs the product according to the detection results and places it in the corresponding position. The two-dimensional transmission structure enables the mechanical gripper 605 to move flexibly in the plane, improving the positioning accuracy and movement speed of the mechanical gripper 605. This allows for accurate grabbing and placement of materials, adapting to products of different positions and sizes, and improving the efficiency and accuracy of feeding and material handling.

[0024] A vertical plate 8 is provided above the fixed base 7, and a hydraulic rod 9 is provided on the top surface of the vertical plate 8. The CCD detector 10 is connected to the output end of the hydraulic rod 9, and the rollers on the bottom surface of the turntable 11 slide in contact with the wheel grooves on the top surface of the fixed base 7.

[0025] In this embodiment, when it is necessary to adjust the distance between the CCD detector 10 and the workpiece, the CCD detector 10 is moved up and down by controlling the extension and retraction of the hydraulic rod 9, thereby changing its height relative to the workpiece. This allows it to adapt to the detection requirements of workpieces of different heights, improving the flexibility and versatility of the detection. It ensures that clear detection images can be obtained under different workpiece sizes, guaranteeing the accuracy of the detection. Furthermore, during the rotation of the turntable 11, the rollers on the bottom surface of the turntable 11 slide in the wheel grooves on the top surface of the fixed seat 7.

[0026] A PLC touch screen 2 is installed on one side of the frame 1. The PLC touch screen 2 is connected to the controllers of the hydraulic rod 9, servo motor 12, CCD detector 10, feeding mechanism 5 and picking mechanism 6 via an Ethernet interface.

[0027] In this embodiment, the operator can remotely control and monitor the operation status of each component on the PLC touch screen 2, which improves the automation level and intelligence of the device.

[0028] In this embodiment, the hydraulic rod 9 and the servo motor 12 are standard existing products widely used in the existing industrial field. The mechanical gripper 605 adopts existing mature industrial mechanical gripper products. The CCD inspector 10 is a common existing vision inspection device. The X-axis transmission assembly 601 and the Y-axis transmission assembly 603 are both linear transmission devices commonly used in existing industrial automation. The specific structure and selection are based on actual needs and refer to existing products.

[0029] Working principle of this utility model: Refer to the instruction manual appendix Figure 1-6 When using this invention, firstly, the product to be tested is placed at the starting end of the belt conveyor 3. The operator starts the belt conveyor 3 via the PLC touch screen 2. The product is conveyed to the unloading end inside the frame 1 as the belt moves. The X-axis transmission component 601 of the feeding mechanism 5 drives the X-axis slide plate 602 to move in the X-axis direction via a synchronous belt. At the same time, the Y-axis transmission component 603 drives the Y-axis slide plate 604 to move in the Y-axis direction via a linear motor, so that the mechanical gripper 605 accurately reaches the product position at the unloading end of the belt conveyor 3. The mechanical gripper 605 closes under the control of the pneumatic system, grabbing the product. The feeding mechanism 5 moves the grabbed product to the idle station 15 above the turntable 11 via a two-dimensional transmission structure, and the mechanical gripper 605 releases. When the product is placed on station 15, the servo motor 12 starts, driving the active dial 1301 to rotate. The cylindrical pin 1302 then makes a circular motion. When the cylindrical pin 1302 enters the radial groove 1304 of the grooved wheel 1303, it pushes the grooved wheel 1303 to rotate at a certain angle, which in turn drives the turntable 11 to rotate through the rotating rod 14. When the cylindrical pin 1302 leaves the radial groove 1304, the grooved wheel 1303 stops rotating, and the turntable 11 also stops, realizing intermittent rotation. In this way, each station 15 passes under the CCD detector 10 in sequence. According to the actual height of the product, the operator can control the extension and retraction of the hydraulic rod 9 through the PLC touch screen 2 to drive the CCD detector 10 to move up and down, adjust the distance between it and the workpiece, and ensure that a clear detection image is obtained. Refer to the instruction manual appendix Figure 7 When using this utility model, when the product on station 15 moves below the CCD detector 10, the CCD detector 10 performs visual inspection on the product, collects the product's image information, and transmits the image data to the data processing module for analysis and processing to determine whether the product is qualified. Based on the received judgment result, the controller sends a corresponding operation command to the mechanical gripper 605. If the product is qualified, the qualified product is conveyed out of the frame 1. If the product is unqualified, the mechanical gripper 605 of the material handling mechanism 6 grabs the unqualified product and places it into the discharge hopper 16. The unqualified product is discharged from the frame 1 through the discharge port of the discharge hopper 16 for further processing.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent visual inspection device, comprising a frame (1), characterized in that: The frame (1) is provided with a belt feeding conveyor (3) and a belt unloading conveyor (4) on its left and right sides respectively. A feeding mechanism (5) is provided above the unloading end of the belt feeding conveyor (3), and a picking mechanism (6) is provided above the feeding end of the belt unloading conveyor (4). Both the feeding mechanism (5) and the picking mechanism (6) have movable mechanical grippers (605) for gripping and placing materials. A fixed seat (7) is provided inside the frame (1) and is located on one side of the belt feeding conveyor (3) and the belt unloading conveyor (4). A turntable (11) is provided above the fixed seat (7), and a CCD detector (10) is provided above the turntable (11). A servo motor is provided on the bottom surface of the fixed seat (7). 12), the fixed base (7) is provided with an intermittent mechanism (13), the intermittent mechanism (13) includes an active dial (1301) connected to the output end of the servo motor (12), a cylindrical pin (1302) is provided on one side above the active dial (1301), a grooved wheel (1303) is provided on one side of the active dial (1301), a plurality of radial grooves (1304) are provided on the grooved wheel (1303), the cooperation of the cylindrical pin (1302) and the radial grooves (1304) realizes the intermittent rotation of the grooved wheel (1303), a rotating rod (14) is connected directly above the grooved wheel (1303) and is connected to the center of the bottom surface of the turntable (11), a plurality of workstations (15) are evenly distributed at equal intervals above the turntable (11).

2. The intelligent visual inspection device according to claim 1, characterized in that: The unloading end of the belt feeding conveyor (3) and the loading end of the belt unloading conveyor (4) are inside the frame (1), and their conveying directions are opposite. The unloading end and loading end of the two extend to the outside of the frame (1) respectively.

3. The intelligent visual inspection device according to claim 1, characterized in that: The feeding mechanism (5) and the picking mechanism (6) also have the following features: both include an X-axis transmission assembly (601) and an X-axis slide plate (602) that can move smoothly on it. A Y-axis transmission assembly (603) is provided on the X-axis slide plate (602), a Y-axis slide plate (604) is provided on the Y-axis transmission assembly (603), and a mechanical gripper (605) is provided on the Y-axis slide plate (604). The X-axis transmission assembly (601) is a synchronous belt transmission structure, and the Y-axis transmission assembly (603) is a linear motor transmission structure. The X-axis slide plate (602) and the Y-axis slide plate (604) achieve linear movement through the cooperation of the slider and the guide rail.

4. The intelligent visual inspection device according to claim 3, characterized in that: The mechanical gripper (605) is a pneumatic gripper, and its gripper surface is provided with an anti-slip silicone pad.

5. The intelligent visual inspection device according to claim 1, characterized in that: A vertical plate (8) is provided above the fixed base (7), and a hydraulic rod (9) is provided on the top surface of the vertical plate (8). The CCD detector (10) is connected to the output end of the hydraulic rod (9).

6. The intelligent visual inspection device according to claim 1, characterized in that: The rollers on the bottom surface of the turntable (11) slide in contact with the wheel grooves on the top surface of the fixed seat (7).

7. The intelligent visual inspection device according to claim 2, characterized in that: A hopper (16) is provided on the other side of the belt feeding conveyor (3) and the belt unloading conveyor (4), and the discharge port of the hopper (16) extends to the outside of the frame (1).

8. The intelligent visual inspection device according to claim 7, characterized in that: A PLC touch screen (2) is provided on one side of the frame (1). The PLC touch screen (2) is connected to the controllers of the servo motor (12), CCD detector (10), feeding mechanism (5) and picking mechanism (6) via an Ethernet interface.

Images