Intelligent three-dimensional AOI detection equipment
Through a multi-axis linkage precision control system and a three-axis adjustment mechanism, the insufficient accuracy and adaptability of existing AOI equipment in high-density circuit board inspection have been solved, achieving efficient and accurate defect detection and automated production.
Patent Information
- Application Number
- CN202422805851.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing AOI inspection equipment is unable to achieve high-precision detection of minute defects, especially in high-density, fine-pitch circuit boards, and cannot flexibly handle products of different specifications.
Employing a multi-axis linkage precision control system, combined with X, Y, and Z axis adjustment mechanisms and a feeding conveyor belt, it achieves high-precision positioning and scanning of the object under test, adapting to the inspection of products of different sizes and shapes.
It improves the accuracy and reliability of testing, realizes full automation from product loading to testing, reduces labor intensity, and expands the application scope of the equipment.
Smart Images

Figure CN223650465U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of product testing technology, and in particular relates to intelligent three-dimensional AOI inspection equipment. Background Technology
[0002] With the rapid development of the electronics manufacturing industry, especially as electronic products trend towards miniaturization, high density, and high performance, the quality requirements for circuit boards and other precision components are becoming increasingly stringent. Traditional manual inspection methods can no longer meet the speed and accuracy requirements of modern production lines. Therefore, automated optical inspection (AOI) technology has emerged. AOI technology utilizes high-resolution cameras and advanced image processing algorithms to perform non-contact inspection of components and solder joints on circuit boards, quickly identifying various defects such as missing components, poor soldering, short circuits, and open circuits. This technology not only improves inspection efficiency but also significantly enhances product quality and production yield. Although existing AOI inspection equipment has made significant progress in many aspects, some shortcomings still exist:
[0003] Existing equipment still struggles to achieve high-precision detection of minute defects in certain situations, especially when dealing with high-density, fine-pitch circuit boards; many devices can only inspect products of specific types or sizes and cannot flexibly handle a variety of different specifications.
[0004] To address these issues, we have developed an intelligent 3D AOI inspection device. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model is an intelligent three-dimensional AOI inspection device, including a device body and an AOI inspection mechanism disposed inside the device body;
[0007] The equipment body includes an equipment compartment, a computer installed inside the equipment compartment, a cover fixed to the upper part of the equipment compartment, a compartment door located in the middle of the front of the cover, a display screen embedded in the middle of the compartment door, control buttons located on the edge of the front of the cover, and an alarm fixed to the bottom of the side of the cover.
[0008] The AOI detection mechanism includes a base, a shelf above the base, a lifting cylinder, and an AOI light source installed at the extension end of the lifting cylinder.
[0009] The present invention is further provided that a caster wheel is provided at the bottom corner of the equipment compartment, and the caster wheel is provided with a height-adjustable threaded support foot around its periphery.
[0010] The present invention is further configured such that the equipment body also includes a feeding carrier belt, the feeding carrier belt passing through the bottom side of the machine cover, and the products to be tested laid on the feeding carrier belt passing sequentially through the lower part of the AOI light source.
[0011] The present invention is further configured such that a guide rail is fixed on the upper side edge of the base, and a support block is movably connected to the upper part of the guide rail. The support block is fixed to the lower side edge of the shelf. The base is also fixed with a motor, which is connected to a screw via a transmission component. A shaft seat is movably fitted at the end of the screw, and a connecting seat is threadedly installed around the circumference of the screw. The connecting seat is fixed to the lower side of the shelf.
[0012] The present invention is further configured such that a bracket is fixed on the side of the shelf, a second motor is fixed on the vertical surface of the bracket, a second screw is adapted to be installed at the output end of the second motor, a second shaft seat is provided at the end of the second screw, a second connecting seat is adapted to be installed on the circumference of the second screw, a panel is fixed on the outside of the second connecting seat, a mounting bracket is fixed on the outside of the panel, and a lifting cylinder is fixed at the end of the mounting bracket.
[0013] The present invention is further configured such that a guide block is fixed on the back of the panel, and a slide rail is provided in cooperation with the guide block, and the slide rail is fixed on the outer side of the vertical surface of the bracket.
[0014] This utility model has the following beneficial effects:
[0015] This invention achieves high-precision positioning and scanning of the object under test by setting up a multi-axis linkage precision control system in the AOI inspection mechanism, ensuring that each inspection point can be accurately checked during the inspection process, which greatly improves the accuracy and reliability of the inspection; together with the setting of the feeding carrier, the whole process from product loading to inspection completion is automated, which not only reduces the need for manual operation and reduces labor intensity, but also speeds up the production pace and improves work efficiency.
[0016] Meanwhile, by setting up a flexible X, Y, and Z-axis adjustment mechanism, including the X-axis movement system on the base, the Y-axis movement system on the shelf, and the Z-axis height adjustment provided by the lifting cylinder, the equipment can adapt to the inspection needs of products of different sizes and shapes, thus expanding its application range.
[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a front view of the overall structure of this utility model.
[0020] Figure 2 This is a schematic diagram showing the distribution of the AOI detection mechanism in this utility model.
[0021] Figure 3 This is a schematic diagram of the rear structure of the AOI detection mechanism in this utility model.
[0022] Figure 4 This is a schematic diagram of the front structure of the AOI detection mechanism in this utility model.
[0023] The attached diagram lists the components represented by each number as follows:
[0024] 100. Equipment body; 101. Equipment compartment; 102. Computer; 103. Casters; 104. Threaded feet; 105. Machine cover; 106. Compartment door; 107. Display screen; 108. Control buttons; 109. Alarm; 110. Feeding conveyor belt; 200. AOI inspection mechanism; 201. Base; 201a. Motor 1; 201b. Shaft seat 1; 201c. Screw 1; 201d. Guide rail; 201e. Support block; 201f. Connecting seat 1; 202. Shelf; 202a. Bracket; 202b. Motor 2; 202c. Shaft seat 2; 202d. Connecting seat 2; 202e. Guide block; 202f. Panel; 202g. Slide rail; 202h. Mounting bracket; 203. Lifting cylinder; 204. AOI light source. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.
[0026] Example
[0027] Please see Figure 1-4 This utility model is an intelligent three-dimensional AOI inspection device, including a device body 100 and an AOI inspection mechanism 200 disposed inside the device body 100.
[0028] The device body 100 includes a device compartment 101, a computer 102 disposed inside the device compartment 101, a cover 105 fixed to the upper part of the device compartment 101, a door 106 disposed in the middle of the front of the cover 105, a display screen 107 embedded in the middle of the door 106, a control button 108 located on the edge of the front of the cover 105, and an alarm 109 fixed to the bottom of the side of the cover 105.
[0029] The AOI detection mechanism 200 includes a base 201, a shelf 202 located above the base 201, a lifting cylinder 203, and an AOI light source 204 installed at the extension end of the lifting cylinder 203.
[0030] Specifically, a guide rail 201d is fixed to the upper side edge of the base 201, and a support block 201e is movably connected to the upper part of the guide rail 201d. The support block 201e is fixed to the lower side edge of the shelf 202. The base 201 is also fixed with a motor 201a, which is connected to a screw 201c via a transmission component. A shaft seat 201b is movably fitted to the end of the screw 201c, and a connecting seat 201f is threadedly fitted to the circumference of the screw 201c. The connecting seat 201f is fixed to the lower side of the shelf 202.
[0031] A bracket 202a is fixed to the upper side of the shelf 202. A motor 202b is fixed to the vertical surface of the bracket 202a. A screw is adapted to be installed at the output end of the motor 202b. A bearing seat 202c is provided at the end of the screw. A connecting seat 202d is adapted to be installed on the circumference of the screw. A panel 202f is fixed to the outside of the connecting seat 202d. A mounting bracket 202h is fixed to the outside of the panel 202f. A lifting cylinder 203 is fixed to the end of the mounting bracket 202h. A guide block 202e is fixed to the back of the panel 202f. A slide rail 202g is provided to the guide block 202e. The slide rail 202g is fixed to the outside of the vertical surface of the bracket 202a.
[0032] Furthermore, a caster wheel 103 is provided at the bottom corner of the equipment compartment 101, and the caster wheel 103 is provided with a height-adjustable threaded support foot 104 around its periphery; the equipment body 100 also includes a feeding carrier belt 110, which passes through the bottom side of the machine cover 105, and the products to be tested laid on the feeding carrier belt 110 pass through the lower part of the AOI light source 204 in sequence.
[0033] This intelligent 3D AOI inspection equipment is designed to achieve efficient and accurate defect detection of circuit boards or other precision components. The entire system consists of two main parts: the equipment body 100 and the AOI inspection mechanism 200. Specific details are as follows:
[0034] The main body of the equipment 100 is responsible for providing a stable working environment, including mechanical support, power management, data processing, etc. The equipment compartment 101 is used to house internal components, such as computer 102, while the cover 105 protects the internal mechanism from external interference. The display screen 107 and control buttons 108 provide a human-machine interface, which makes it easy for the operator to monitor the detection process and results. The alarm 109 issues a warning when an abnormality is detected during the detection process.
[0035] The AOI inspection mechanism 200 is the core component of the entire equipment, responsible for performing the actual inspection tasks. It utilizes a multi-axis motion control system (X, Y, Z axes) to achieve precise positioning and scanning of the product. The relative movement between the base 201 and the shelf 202 enables adjustment in the X-axis direction, while the lifting cylinder 203 is responsible for height adjustment in the Z-axis direction. The bracket 202a on the shelf 202, together with the motor 202b, screw 2, and other components, enables position adjustment in the Y-axis direction. The three-axis linkage ensures that the AOI light source 204 is accurately aligned with the product to be inspected, thereby improving inspection accuracy and efficiency.
[0036] The specific steps for using this 3D AOI inspection equipment are as follows:
[0037] I. Preparation: First, place the equipment on a flat surface and adjust the threaded support 104 to keep the equipment level. Then, turn on the power and start the computer 102.
[0038] II. Parameter settings: Select or configure the corresponding testing program in computer 102 according to the characteristics of the product to be inspected;
[0039] 3. Loading the product: Place the product to be inspected on the feeding carrier belt 110, and the product will automatically enter the inspection area with the carrier belt;
[0040] IV. Start Inspection: Click the “Start” button on the display screen 107. The equipment will run automatically according to the preset program. The AOI inspection mechanism 200 will move in the three dimensions of X, Y and Z, so that the AOI light source 204 is aligned with each point to be inspected for detailed inspection.
[0041] V. Result Analysis: After the test is completed, the system will automatically generate a report and display the test results on the display screen 107. If there are any unqualified items, the alarm 109 will issue an alarm prompt.
[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An intelligent 3D AOI inspection device, comprising a device body (100) and an AOI inspection mechanism (200) disposed inside the device body (100), characterized in that: The device body (100) includes a device compartment (101), a computer (102) installed inside the device compartment (101), a cover (105) fixed to the upper part of the device compartment (101), a door (106) located in the middle of the front of the cover (105), a display screen (107) embedded in the middle of the door (106), a control button (108) located on the edge of the front of the cover (105), and an alarm (109) fixed to the bottom of the side of the cover (105). The AOI detection mechanism (200) includes a base (201), a shelf (202) located above the base (201), a lifting cylinder (203), and an AOI light source (204) installed at the extension end of the lifting cylinder (203).
2. The intelligent 3D AOI inspection equipment according to claim 1, characterized in that, The equipment compartment (101) is provided with a caster wheel (103) at the bottom corner, and the caster wheel (103) is provided with a height-adjustable threaded support foot (104) around its periphery.
3. The intelligent 3D AOI inspection equipment according to claim 1, characterized in that, The equipment body (100) also includes a feeding carrier belt (110), which passes through the bottom side of the machine cover (105), and the products to be tested laid on the feeding carrier belt (110) pass through the lower part of the AOI light source (204) in sequence.
4. The intelligent 3D AOI inspection equipment according to claim 1, characterized in that, A guide rail (201d) is fixed to the upper side edge of the base (201), and a support block (201e) is movably connected to the upper part of the guide rail (201d). The support block (201e) is fixed to the lower side edge of the shelf (202). The base (201) is also fixed with a motor (201a), which is connected to a screw (201c) via a transmission component. A shaft seat (201b) is movably fitted to the end of the screw (201c), and a connecting seat (201f) is threadedly fitted to the circumference of the screw (201c). The connecting seat (201f) is fixed to the lower side of the shelf (202).
5. The intelligent 3D AOI inspection equipment according to claim 1, characterized in that, A bracket (202a) is fixed to the upper side of the shelf (202). A motor (202b) is fixed to the vertical surface of the bracket (202a). A screw is adapted to be installed at the output end of the motor (202b). A shaft seat (202c) is provided at the end of the screw. A connecting seat (202d) is adapted to be installed on the circumference of the screw. A panel (202f) is fixed to the outside of the connecting seat (202d). A mounting bracket (202h) is fixed to the outside of the panel (202f). A lifting cylinder (203) is fixed to the end of the mounting bracket (202h).
6. The intelligent 3D AOI inspection equipment according to claim 5, characterized in that, A guide block (202e) is fixed on the back of the panel (202f), and a slide rail (202g) is provided in cooperation with the guide block (202e). The slide rail (202g) is fixed to the outside of the vertical surface of the bracket (202a).