Hardware structural member multi-angle visual inspection device

Abstract

The utility model discloses a hardware structural member multi-angle visual inspection device, and relates to the field of visual inspection, and the hardware structural member multi-angle visual inspection device comprises a machine table with a working table top, a feeding assembly located in the machine table, a discharging assembly located in the machine table, and a detection assembly which is installed on the working table top and is correspondingly matched with the feeding assembly and the discharging assembly, the feeding assembly and the discharging assembly are arranged on the two sides of the detection assembly. The detection assembly comprises a plurality of mechanical arms arranged between the feeding assembly and the discharging assembly and a plurality of detection stations arranged beside the mechanical arms, the mechanical arms alternately grab the hardware structural parts to be matched with the different detection stations, and detection of different positions, areas and angles of the hardware structural parts is achieved. According to the device, the multi-angle visual sensor and the automatic adjusting mechanism are introduced, so that comprehensive detection of a complex structure can be realized, the detection accuracy and efficiency are improved, and the product quality is ensured.

Description

Technical Field

[0001] The present application relates to the field of visual inspection, and in particular to a multi-angle visual inspection device for hardware structural parts. Background Art

[0002] In modern industrial production, quality inspection of hardware components is an important part of ensuring product quality. Traditional hardware inspection devices mainly rely on assembly line structures, conveying workpieces to the inspection position through conveyor belts, and using single-angle visual inspection equipment for inspection. Although this inspection method can guarantee inspection efficiency to a certain extent, it has many limitations when facing hardware with complex structures.

[0003] The current hardware structural parts inspection devices have the following main shortcomings: First, there are many blind spots in the inspection. Existing devices usually only support visual inspection at a single angle. For some hardware with complex structures, especially parts with oblique grooves and oblique holes, the inspection effect is not ideal. The special structure of these parts easily forms blind spots in the inspection, resulting in some areas being unable to be effectively inspected. For example, the oblique grooves and oblique holes inside some hardware are often overlooked in traditional single-angle inspections due to their specific angles and positions, resulting in defects in these areas not being discovered in a timely manner, affecting the overall quality of the product.

[0004] Secondly, the structure is single and the adaptability is poor. Most existing devices use the traditional conveyor belt structure, which makes it difficult to achieve flexible multi-angle detection. The conveyor belt structure is fixed and cannot be adjusted according to the structural characteristics of different hardware, resulting in poor flexibility and adaptability of detection. For example, when detecting hardware of different sizes and shapes, the fixed conveyor belt cannot adjust its angle and position, resulting in a limited detection range and unable to fully cover all angles of the workpiece. This fixed structure is particularly insufficient when facing complex and polyhedral hardware.

[0005] Finally, the detection efficiency is low. For hardware with complex structures, the existing detection device needs to adjust its position multiple times to complete comprehensive detection, which makes the detection process cumbersome and inefficient. Multiple adjustments not only increase the detection time, but also increase the complexity and cost of the operation. For example, when detecting a hardware with a polyhedral structure, the operator needs to manually adjust its position and angle multiple times to ensure that all faces and corners can be detected. This not only increases the difficulty of operation, but also greatly prolongs the detection cycle and reduces production efficiency.

[0006] The specific reason for the above shortcomings is that the existing detection devices were originally designed for relatively simple hardware structures, and did not fully consider the detection needs of complex structures. This design limitation makes it difficult for the equipment to achieve comprehensive visual inspection when facing complex workpieces. For example, in traditional equipment design, the detection angle and position are fixed and cannot be flexibly adjusted to meet different detection needs, which leads to the generation of detection blind spots.

[0007] Secondly, traditional inspection technology mainly relies on single-angle visual sensors and lacks the ability to detect at multiple angles and multiple positions. The existing technology level has not effectively solved the problem of blind spots in the inspection of complex structural parts, resulting in incomplete inspection results. Single-angle visual sensors cannot capture all the details that need to be inspected when facing complex structures. For example, some defects hidden in bevels or grooves are difficult to detect with traditional single-angle sensors, which seriously affects the comprehensiveness and accuracy of inspection.

[0008] Finally, the degree of automation is not high. The existing devices have a low degree of automation and rely on manual multiple position adjustments, which cannot achieve efficient and automated multi-angle detection. This not only affects the detection efficiency, but also increases labor costs and operational difficulty. Traditional equipment requires operators to manually adjust the position and angle of the workpiece to ensure that every detection point is covered, which not only increases the operation time, but is also prone to human errors, affecting the reliability of the detection results.

[0009] In summary, in order to improve the inspection accuracy and efficiency of hardware structural parts, an advanced inspection device that can realize multi-angle and multi-position visual inspection is urgently needed to overcome the shortcomings of existing technologies and meet the inspection needs of complex structural parts. Utility Model Content

[0010] The purpose of this application is to overcome at least one of the shortcomings of the prior art and to provide a multi-angle visual inspection device for hardware structural parts. The device can achieve comprehensive inspection of complex structures, improve the accuracy and efficiency of inspection, and ensure product quality by introducing multi-angle visual sensors and automatic adjustment mechanisms.

[0011] To achieve the above-mentioned purpose, the present application discloses a multi-angle visual inspection device for hardware structural parts, comprising a machine with a work surface, a loading assembly located in the machine, a unloading assembly located in the machine, and a detection assembly installed on the work surface and relatively matched with the loading assembly and the unloading assembly, wherein the loading assembly and the unloading assembly are arranged on both sides of the detection assembly, the loading assembly delivers the hardware structural parts to the work surface, and the detection assembly grabs the hardware structural parts for inspection and delivers them to the unloading assembly;

[0012] The loading assembly and the unloading assembly are identical in structure, and both have at least one lifting and lowering material transfer rack installed in the machine platform, a material suction mechanism installed on the work surface and cooperating with the material transfer rack, and a material port corresponding to the loading position is provided on the work surface;

[0013] The feeding assembly also includes a material moving mechanism mounted on the work surface and cooperating with the material suction mechanism;

[0014] The detection assembly includes a plurality of mechanical arms arranged between the loading assembly and the unloading assembly and a plurality of detection stations arranged next to the mechanical arms. The mechanical arms alternately grasp the hardware structural parts and cooperate with different detection stations to realize the detection of different positions, areas and angles of the hardware structural parts.

[0015] The inspection station includes a manually adjustable rack, a light source and a camera installed on the manually adjustable rack, the light source cooperates with the camera relatively and the position and orientation of the camera can be adjusted through the manually adjustable rack.

[0016] Furthermore, the loading assembly and the unloading assembly also include a return rack opposite to the material transfer rack. The return rack can also be controlled to move up and down in the machine. The suction mechanism transfers the material tray on the material transfer rack to the return rack to achieve continuous operation.

[0017] Furthermore, an NG position is installed on the work surface, and the NG position is used to store unqualified hardware structural parts.

[0018] Furthermore, a correction position is installed on the work surface, which includes a base, a jig rotatably installed on the base, a motor driving the jig to rotate, and a cylinder, wherein the jig has a slot for placing a hardware structure, and correction rods driven by the cylinder to synchronously extend and retract are provided at the four corners of the slot. The correction rods are inserted into the slot to correct the position of the hardware structure installed in the slot.

[0019] Furthermore, the material moving rack is driven by a vertical guide rail and a vertical driving mechanism to achieve lifting.

[0020] Further, the material suction mechanism includes a horizontal linear guide rail, a movable block installed on the horizontal linear guide rail, and a suction cup frame installed on the movable block, wherein the movable block is connected to a motor through a screw rod, and the motor drives the movable block to perform reciprocating linear motion along the horizontal linear guide rail; the suction cup frame is equipped with a plurality of suction cups facing the upper material rack.

[0021] Furthermore, the material moving mechanism is a three-axis material moving mechanism, which can perform limited linear motion in the X, Y and Z directions. The three-axis material moving mechanism has a material moving clamp, which can be linearly extended and retracted in the Z direction to realize the Z-direction linear motion of the material moving mechanism; the material moving mechanism cooperates with the material suction mechanism to move the hardware structure to the correction position.

[0022] Furthermore, the robot arm has three 6-axis arms, and a gripper for gripping hardware components is installed at the working end of the robot arm; each arm works in sequence to grip different parts of the hardware components.

[0023] Furthermore, the light source on the inspection station is composed of two light strips, which are in the same direction as the camera. Both strips are multi-color adjustable light strips with the function of adjusting the lighting color and color temperature to meet the visual inspection of different hardware structures, especially hardware structures with colors or partially with specific colors.

[0024] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0025] 1. Improve detection accuracy and efficiency: The new detection device introduces multi-angle visual sensors and automatic adjustment mechanisms, making it possible to conduct comprehensive inspections on hardware with complex structures. Such a device can detect defects in hardware more accurately, improve detection efficiency, and help improve product quality.

[0026] 2. Enhanced flexibility and adaptability: The new device uses multiple robotic arms and inspection stations to detect hardware components at different positions, areas, and angles. At the same time, the various components of the device can be adjusted according to the structural characteristics of specific hardware, which enhances the flexibility and adaptability of the device.

[0027] 3. Improved degree of automation: The new device has a high degree of automation. Through the cooperation of the robotic arm and the automatic adjustment mechanism, it can achieve efficient and automated multi-angle detection, reducing the need for manual adjustment, and reducing labor costs and operating difficulty.

[0028] 4. Comprehensive inspection coverage: Multi-color adjustable light strips are used at the inspection station, and visual inspection is carried out with cameras to meet the inspection needs of different hardware structural parts, especially for hardware structural parts with colors or partial specific colors. It can provide comprehensive inspection coverage and further ensure product quality.

[0029] The above-listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementations will be further disclosed in the examples or other description parts of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] After reading the following detailed description in conjunction with the accompanying drawings, you will better understand the various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the accompanying drawings sometimes do not represent the actual positions, sizes, and ranges. In the accompanying drawings:

[0031] Figure 1 It is a structural schematic diagram of an embodiment disclosed in this application.

[0032] Figure 2 It is a structural schematic diagram of an embodiment disclosed in the present application from another perspective.

[0033] Figure 3 It is a structural schematic diagram of a detection station in an embodiment disclosed in the present application. DETAILED DESCRIPTION

[0034] The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0035] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0036] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, the techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification.

[0037] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items. Example

[0038] like Figures 1 to 3As shown, this embodiment discloses a multi-angle visual inspection device for hardware structural parts, which includes a machine 1 with a work surface 2, a loading assembly 4 located in the machine 1, a unloading assembly 5 located in the machine 13, and a detection assembly 6 installed on the work surface 2 and relatively matched with the loading assembly 4 and the unloading assembly 5. The device is intended to achieve efficient and accurate inspection of hardware structural parts through multi-angle visual inspection technology.

[0039] The specific structure and connection relationship are as follows:

[0040] The machine platform 3 is made of a solid aluminum alloy material to ensure the stability and durability of the overall structure. The loading assembly 4 and the unloading assembly 5 are located on both sides of the detection assembly 6 respectively.

[0041] Specifically, the loading assembly 4 and the unloading assembly 5 have the same structural composition, both of which include at least one material moving rack 7 installed in the machine platform 1 and capable of being raised and lowered, and a material suction mechanism 8 installed on the work surface 2 and cooperating with the material moving rack 7. The material moving rack 7 is raised and lowered by vertical guide rails and a vertical driving mechanism. The guide rails and the driving mechanism are both made of high-precision steel to ensure that the material moving rack 7 can be raised and lowered smoothly and accurately.

[0042] In order to realize the above-mentioned action, the feeding assembly 4 also includes a material moving mechanism 9 which is mounted on the work surface 2 and cooperates with the material suction mechanism 8.

[0043] The material suction mechanism 8 is composed of a horizontal linear guide rail, a movable block mounted on the horizontal linear guide rail, and a suction cup frame mounted on the movable block. The movable block is connected to a motor through a screw rod, and the motor drives the movable block to make reciprocating linear motion along the horizontal linear guide rail. The suction cup frame is equipped with a number of suction cups facing the upper material moving rack. These suction cups are made of high-strength rubber material to ensure the stable grasping of the hardware structure.

[0044] The material transfer mechanism 9 is a three-axis material transfer mechanism, which can perform limited-distance linear motion in the X, Y and Z directions. The three-axis material transfer mechanism adopts high-precision guide rails and servo motor drive. The material transfer claws can be linearly extended and retracted in the Z direction. The material transfer mechanism cooperates with the material suction mechanism to transfer the hardware structure to the calibration position or the inspection position.

[0045] During operation, the suction mechanism 8 grabs and stabilizes the material tray equipped with several hardware components through the suction cup.

[0046] In this embodiment, the loading assembly 4 and the unloading assembly 5 further include a return rack 10 opposite to the transfer rack 7. Such a design enhances the continuity and efficiency of the device. The return rack 10 is similar to the transfer rack 7 and can also be controlled to move up and down in the machine 1, so that the suction mechanism 8 can transfer the material tray on the transfer rack 7 to the return rack 10, thereby realizing a continuous workflow.

[0047] Specifically, the design of the return rack 10 is similar to that of the transfer rack 7, and also adopts high-precision guide rails and drive mechanisms to ensure the stability and accuracy of its lifting movement in the machine platform 1. When working, the suction mechanism transfers the material tray on the transfer rack to the return rack in the following process:

[0048] The material suction mechanism 8 first moves the suction cup to above the material transfer rack 7, and starts the suction cup to firmly adsorb the material tray.

[0049] The suction cup remains in the adsorption state, and the material suction mechanism 8 starts to move, moving the material tray horizontally to the position where the return rack 10 is located.

[0050] Once the suction mechanism 8 moves the material tray to the position of the return rack, the lifting mechanism on the return rack 10 starts to work, and the return rack 10 is vertically raised or lowered to a suitable position so that the material tray can be smoothly transferred to the return rack.

[0051] After the material return rack 10 is raised or lowered to a suitable position, the material suction mechanism 8 gradually reduces the suction force to ensure that the material tray can be stably placed on the material return rack 10 .

[0052] Once the material tray is successfully transferred to the return rack 10, the suction mechanism 8 stops the suction action and prepares for the next round of work.

[0053] Through such a design, a coherent work process is achieved between the loading assembly 4 and the unloading assembly 5, and the suction mechanism 8 can smoothly transfer the material tray from the transfer rack 7 to the return rack 10, providing a smooth material conveying path for subsequent inspection and processing. The automation and high efficiency of the entire process further improve the working efficiency and production capacity of the device.

[0054] The detection component 6 includes a plurality of robot arms 11 and detection stations 12 arranged between the loading component 4 and the unloading component 5 .

[0055] Specifically, there are three robotic arms 11, which are 6-axis robotic arms. A clamping claw for clamping hardware structural parts is installed at the working end of each robotic arm 11. The clamping claw is made of wear-resistant alloy material to ensure durability and stability for long-term use. Each robotic arm 11 works in sequence to grab different parts of the hardware structural parts and transfer them to a suitable position for inspection at the inspection station 12.

[0056] The light source of the inspection station 12 is composed of two light strips 13, which are in the same direction as the camera 14. The light strips 13 are all multi-color adjustable light strips, which have the function of adjusting the lighting color and color temperature to meet the inspection requirements of different hardware structures. In particular, for hardware structures with colors or parts with specific colors, these light strips 13 can provide comprehensive inspection coverage. The light source and the camera 14 are both installed on a manually adjustable rack 15, which is made of high-strength aluminum alloy material. The position and direction of the camera 14 can be adjusted through the manually adjustable rack 15 to achieve inspection of different positions, areas, and angles of hardware structures.

[0057] During the operation, the robot arm 11 sequentially grabs the hardware components and places them on each inspection station 12. Each inspection station 12 inspects different parts of the hardware components to ensure full coverage. The hardware components being inspected are transferred between multiple robot arms 11, and different robot arms 11 cooperate with different inspection stations 12.

[0058] Qualified hardware structural parts are transferred by the robot arm 11 to the material transfer rack 7 of the unloading assembly 5, and the material transfer rack 7 descends through the vertical guide rail to send out the qualified parts.

[0059] The unqualified hardware structural parts are transferred by the robot arm 11 to the NG position for storage 16, and the NG position 16 is specifically used to store unqualified hardware structural parts for subsequent processing.

[0060] The working principle of the inspection station 12 is to provide the best lighting conditions through the light source to ensure that the image captured by the camera 14 is clear and accurate. The camera 14 adjusts the position and angle through the manual frame 15 to capture various parts of the hardware structure. The computer receives the image transmitted by the camera and analyzes the image to detect surface defects, dimensional deviations and other problems of the hardware structure. If a problem is detected, the system will automatically record it and prompt the robot arm 11 to move the unqualified hardware structure to the NG position 16 for storage.

[0061] In addition, to ensure accurate calibration of hardware components, a calibration position 17 is also provided on the work surface 2. The calibration position 17 includes a base, a fixture, a motor and a cylinder for driving the fixture to rotate. The fixture has a slot for placing hardware components, and calibration rods driven by the cylinder to synchronously extend and retract are provided at the four corners of the slot. The calibration rod is inserted into the slot to calibrate the position of the hardware components installed in the slot. After the calibration is completed, the robot arm transfers the hardware components to the blanking assembly or re-tests them to ensure that each hardware component undergoes strict quality control before leaving the factory.

[0062] It should be understood that the detection device is also connected to an external control system. The detection device is mainly responsible for data output and action execution, while the corresponding judgment is completed by the chip and program in the control system. Specifically, the image captured by the camera of the detection station is transmitted to the external control system via a data line, and the image processing software in the control system analyzes the image to identify surface defects, dimensional deviations and other problems of the hardware structural parts. According to the analysis results, the control system issues instructions to control the robot arm 11 to transfer unqualified hardware structural parts to the NG position 16 for storage, while qualified hardware structural parts are transferred to the blanking assembly 5.

[0063] In this embodiment, the device improves detection accuracy and efficiency through multi-angle visual sensors and automated adjustment mechanisms. The cooperation of the robotic arm and the automated adjustment mechanism realizes efficient and automated detection, reduces the need for manual adjustment, and reduces labor costs and operational difficulty. The combination of multi-color adjustable light strips and cameras meets the detection requirements of different hardware structural parts and ensures comprehensive detection coverage. The multi-angle visual detection device for hardware structural parts provided in this embodiment can effectively improve the accuracy and efficiency of hardware detection, and has broad application prospects and market potential.

[0064] Although exemplary embodiments of the present disclosure have been described, it will be apparent to those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without substantially departing from the spirit and scope of the present disclosure.

Claims

1. Multi-angle visual inspection device for hardware structural parts, characterized in that: include: A machine having a work surface, a loading assembly located in the machine, a unloading assembly located in the machine, and a detection assembly installed on the work surface and relatively matched with the loading assembly and the unloading assembly, wherein the loading assembly and the unloading assembly are arranged on both sides of the detection assembly, the loading assembly delivers the hardware structure to the work surface, and the detection assembly grabs the hardware structure, performs detection, and delivers it to the unloading assembly; The loading assembly and the unloading assembly are identical in structure, and both have at least one lifting and lowering material transfer rack installed in the machine platform, a material suction mechanism installed on the work surface and cooperating with the material transfer rack, and a material port corresponding to the loading position is provided on the work surface; The feeding assembly also includes a material moving mechanism mounted on the work surface and cooperating with the material suction mechanism; The detection assembly includes a plurality of mechanical arms arranged between the loading assembly and the unloading assembly and a plurality of detection stations arranged next to the mechanical arms. The mechanical arms alternately grasp the hardware structural parts and cooperate with different detection stations to realize the detection of different positions, areas and angles of the hardware structural parts. The inspection station includes a manually adjustable rack, a light source and a camera mounted on the manually adjustable rack, the light source cooperates with the camera and the position and orientation of the camera can be adjusted via the manually adjustable rack; A correction position is installed on the work table, which includes a base, a fixture rotatably installed on the base, a motor driving the fixture to rotate, and a cylinder, wherein the fixture has a slot for placing a hardware structure, and correction rods driven by the cylinder to synchronously extend and retract are arranged at the four corners of the slot. The correction rod is inserted into the slot to correct the position of the hardware structure installed in the slot.

2. The multi-angle visual inspection device for hardware structural parts as claimed in claim 1, characterized in that: An NG position is installed on the work surface, which is used to store unqualified hardware structural parts.

3. The multi-angle visual inspection device for hardware structural parts as claimed in claim 1, characterized in that: The material moving rack is driven by a vertical guide rail and a vertical driving mechanism to achieve lifting.

4. The multi-angle visual inspection device for hardware structural parts as claimed in claim 1, characterized in that: The material suction mechanism includes a horizontal linear guide rail, a movable block installed on the horizontal linear guide rail, and a suction cup frame installed on the movable block, wherein the movable block is connected to a motor through a screw rod, and the motor drives the movable block to perform reciprocating linear motion along the horizontal linear guide rail; the suction cup frame is equipped with a plurality of suction cups facing the upward material rack.

5. The multi-angle visual inspection device for hardware structural parts as claimed in claim 1, characterized in that: The material moving mechanism is a three-axis material moving mechanism, which can perform limited linear motion in the X, Y and Z directions. The three-axis material moving mechanism has a material moving clamp, which can be linearly extended and retracted in the Z direction to realize the linear motion of the material moving mechanism in the Z direction; the material moving mechanism cooperates with the material suction mechanism to move the hardware structure to the correction position.

6. The multi-angle visual inspection device for hardware structural parts as claimed in claim 1, characterized in that: The robot has three 6-axis arms, and a gripper for gripping hardware components is installed at the working end of the robot; each arm works in sequence to grip different parts of the hardware components.

7. The multi-angle visual inspection device for hardware structural parts as claimed in claim 1, characterized in that: The light source on the inspection station consists of two light strips, which are facing the same direction as the camera. Both light strips are multi-color adjustable and have the function of adjusting the lighting color and color temperature.

8. The multi-angle visual inspection device for hardware structural parts as claimed in claim 1, characterized in that: The loading assembly and the unloading assembly also include a return rack opposite to the transfer rack. The return rack can also be controlled to move up and down in the machine. The suction mechanism transfers the material tray on the transfer rack to the return rack to achieve continuous work.

Images