A defect detection apparatus

Abstract

The utility model discloses a kind of defect detection equipment, belong to visual inspection equipment technical field.The defect detection equipment includes feeding device, feeding device includes feeding assembly and separates component, feeding assembly includes feeding table and the first limiting plate of setting in feeding table, and discharge space is between the first limiting plate and feeding table;Separate component includes separate mechanism, and separate mechanism can be moved between first position and second position;Wherein, when separate mechanism is in first position, separate mechanism and the first limiting plate are located on the two sides opposite feeding table, and first limiting plate and separate mechanism are used for placing to be detected object between;Separate mechanism can be moved to second position by first position to the direction close to first limiting plate;When separate mechanism is in second position, it is located in discharge space and is used for separating stacked area.The utility model moves between first position and second position by separate mechanism, satisfies the discharging demand of self-adaptive of multiple specifications PCB board.

Description

Technical Field

[0001] This utility model relates to the field of defect detection equipment technology, and in particular to a defect detection equipment. Background Technology

[0002] Visual inspection equipment is an automated inspection device based on machine vision technology. It acquires image information of the object being inspected through an optical imaging system and uses image processing algorithms to identify and judge features such as defects, dimensions, and locations. Defect inspection equipment for planar materials such as printed circuit boards (PCBs) and glass substrates typically involves stacking the boards to be inspected at a loading station, where an adsorption device or robotic arm picks them up one by one and transfers them to the inspection station. A high-precision camera then captures images of the board surface and performs defect analysis.

[0003] However, the design of the loading station of the testing equipment in the relevant technology has shortcomings: on the one hand, some equipment directly stacks the boards on the flat surface of the material platform, which can easily lead to the stacking of the boards being misaligned, which not only reduces the success rate of picking up the materials, but also poses safety hazards; on the other hand, although some equipment sets a limiting structure at the edge of the material platform to regulate the stacking position, such limiting structures are usually fixed designs and can only be adapted to a single loading scenario, which restricts the versatility of the testing equipment. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a defect detection device, which can be adjusted between different positions by a sorting mechanism, so that a single feeding device can meet the feeding requirements of two sizes of objects to be tested, and has strong versatility.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A defect detection device includes a frame and a feeding device;

[0007] The feeding device includes:

[0008] The feeding frame is fixedly connected to the equipment frame;

[0009] A feeding assembly has a discharge space; the feeding assembly includes a feeding platform installed on a feeding frame and a first limiting plate disposed on the feeding platform, the discharge space being located between the first limiting plate and the feeding platform;

[0010] The sorting assembly includes a sorting mechanism that is movable between a first position and a second position;

[0011] When the sorting mechanism is in the first position, the sorting mechanism and the first limiting plate are located on opposite sides of the loading platform, and the space between the first limiting plate and the sorting mechanism is used to place the object to be tested; the sorting mechanism can move from the first position to the second position in a direction closer to the first limiting plate; when the sorting mechanism is in the second position, it is located in the material feeding space and is used to separate the stacking area, and the space between the sorting mechanism and the first limiting plate, as well as the side of the sorting mechanism away from the first limiting plate, are used to place the object to be tested.

[0012] Optionally, the feeding assembly includes a second limiting plate, which is disposed on adjacent sides of the feeding platform along with the first limiting plate, forming an L-shaped positioning structure between the first limiting plate and the second limiting plate; the unloading space is located between the first limiting plate, the second limiting plate, and the feeding platform.

[0013] Optionally, the sorting assembly includes a sorting base, which is disposed on the side of the loading platform away from the unloading space;

[0014] The loading platform is provided with a clearance hole. One end of the sorting mechanism is slidably mounted on the sorting base, and the other end passes through the clearance hole to extend to the upper side of the loading platform. The first limiting plate is located on one side of the loading platform in the y direction. The clearance hole extends along the y direction. The sorting mechanism can move along the y direction to move from the first position to the second position.

[0015] Optionally, the sorting mechanism includes multiple sorting guide rods, which are spaced apart along the x-direction; the loading platform is provided with multiple clearance holes spaced apart along the x-direction, and each sorting guide rod passes through one of the clearance holes.

[0016] Optionally, the upper side of the loading platform is provided with a plurality of supporting protrusions, the supporting protrusions extending along the y-direction, and the plurality of supporting protrusions being spaced apart along the x-direction; the clearance hole is located between adjacent supporting protrusions.

[0017] Optionally, the dispensing mechanism includes a rod mounting base, which is slidably mounted on the dispensing base; the dispensing guide rod is mounted on the rod mounting base.

[0018] Optionally, the dispensing base is provided with a first positioning part and a second positioning part at intervals along the y direction; the dispensing assembly includes a positioning member, which is detachably or movably installed on the dispensing mechanism;

[0019] The positioning member is used to engage with the first positioning part or the second positioning part to hold the dispensing mechanism in the first position or the second position.

[0020] Optionally, the positioning element is a pull-out pin, one end of which is elastically mounted to the dispensing mechanism via an elastic element, and the other end can be selectively inserted into the first positioning part or the second positioning part.

[0021] Optionally, the feeding device includes a feeding frame and a lifting drive device;

[0022] The feeding space is located on one side of the feeding platform in the z direction. The feeding platform is slidably connected to the feeding frame in the z direction. The lifting drive device is used to drive the feeding platform to move relative to the feeding frame in the z direction.

[0023] Optionally, it includes a feeding module, a discharging module, a detection and conveying assembly, a first transfer device, a second transfer device, and an imaging assembly; the feeding module includes at least two of the feeding devices described above.

[0024] The feeding module includes feeding devices respectively disposed on opposite sides of the detection and conveying component; the unloading module includes a good product unloading device and a defective product unloading device respectively disposed on opposite sides of the detection and conveying component.

[0025] The first transfer device is used to move between the loading device and the detection and conveying assembly; the second transfer device is used to move between the detection and conveying assembly and the unloading module.

[0026] The imaging component is used to acquire images of the object to be detected being transported on the detection and transmission component.

[0027] The beneficial effects of this utility model are as follows: by flexibly adjusting the distribution mechanism between the first and second positions, it can meet the needs of stacking large-size boards in a single stack, stacking small-size boards in a single stack, and separating and storing small-size boards in a double stack, thus significantly improving the versatility and adaptability of the feeding device.

[0028] Furthermore, the coordinated positioning design of the sorting mechanism and the limiting plate ensures that different specifications of plates are stacked neatly, improves material handling stability and detection efficiency, and overcomes the shortcomings of the feeding device in related technologies, which has limited applicability and poor versatility.

[0029] Furthermore, the feeding device is fixed to the equipment frame via the feeding frame. The feeding device is fixed in position within the defect detection equipment. After the object to be inspected is placed on the feeding device, the position of the object to be inspected is stable and will not shake, ensuring that the transfer device can accurately and stably remove the object to be inspected from the feeding platform. Attached Figure Description

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is one of the structural schematic diagrams of the feeding device described in the embodiment of this utility model (the distributing structure is located in the first position in the figure);

[0032] Figure 2 This is a second schematic diagram of the feeding device described in an embodiment of the present utility model (the distributing structure is located in the second position in the figure);

[0033] Figure 3 for Figure 1 Enlarged view of part A in the image;

[0034] Figure 4 for Figure 2 Enlarged view of part B in the image;

[0035] Figure 5 This is the third structural schematic diagram of the feeding device described in this embodiment of the utility model (the distributing structure is located in the second position in the figure);

[0036] Figure 6 This is the fourth structural schematic diagram of the feeding device described in this embodiment of the utility model (the distributing structure is located in the first position in the figure);

[0037] Figure 7 This is a schematic diagram of the structure of the feeding device's dispensing assembly according to an embodiment of the present utility model (the dispensing structure is located in the first position in the figure);

[0038] Figure 8 This is one of the structural schematic diagrams of the defect detection equipment according to an embodiment of this utility model.

[0039] Figure 9 This is the second structural schematic diagram of the defect detection device according to an embodiment of this utility model.

[0040] In the diagram: 10. Loading platform; 101. Discharge space; 11. Clearance hole; 12. Supporting protrusion; 21. First limiting plate; 22. Second limiting plate; 30. Separating mechanism; 31. Separating guide rod; 32. Rod mounting base; 40. Separating base; 41. Slide rail; 421. First positioning part; 422. Second positioning part; 50. Positioning component; 60. Loading frame; 100. Loading device; 200. Detection and conveying assembly; 300. Good product unloading device; 400. Defective product unloading device; 500. First material transfer device; 600. Second material transfer device; 700. Imaging assembly. Detailed Implementation

[0041] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In related technologies, the loading devices of defect detection equipment suffer from poor versatility. Although the loading devices physically organize stacked PCB boards, glass substrates, and other materials by setting limiting structures, their limiting methods can only adapt to materials of specific sizes to be inspected. Some improvement solutions attempt to configure multiple independent loading stations, setting up dedicated loading devices at different stations to meet the inspection needs of materials of various sizes. However, this discrete layout not only significantly increases the overall size of the equipment but also leads to low utilization of production line space, resulting in a double waste of equipment footprint and hardware costs.

[0045] Based on this, this application provides a feeding device suitable for visual defect detection equipment, such as a PCB appearance defect detection equipment.

[0046] In this feeding device, the distributing mechanism, movably mounted on the feeding platform, is adjusted between a first position and a second position to move the distributing mechanism away from or closer to the first limiting plate, thereby adjusting the interval between the first limiting plate and the distributing mechanism. A single feeding device can meet the storage needs of single stacks of large-size boards, single stacks of small-size boards, and also the need for separate storage of double stacks of small-size boards. It is more versatile, does not require multiple workstations, and combines space-saving design with ease of operation.

[0047] Please refer to Figures 1 to 9 The defect detection equipment of this application will now be described.

[0048] For ease of understanding, the relative positions of the components are described using the x, y, and z directions, which are perpendicular to each other. For example, the x direction is the front-back direction, the y direction is the left-right direction, and the z direction is the up-down direction.

[0049] The defect detection equipment includes an equipment frame and a feeding device 100. The feeding device 100 includes a feeding frame 60, which is fixedly installed on the equipment frame.

[0050] The loading device 100 also includes a loading assembly and a sorting assembly. The loading assembly provides placement and positioning functions for circuit boards awaiting inspection, while the sorting assembly is used to separate two stacks of items awaiting inspection when necessary.

[0051] Reference Figure 1 , Figure 2 , Figure 5 , Figure 6 The loading assembly includes a loading platform 10 and a first limiting plate 21. The loading platform 10 is mounted on the loading frame 60. The first limiting plate 21 is disposed on the first side of the loading platform 10 and extends upward relative to the loading platform 10. The unloading space 101 is located between the inner side of the first limiting plate 21 and the loading platform 10. For example, if the first limiting plate 21 is disposed on the left side of the loading platform 10, then the unloading space 101 is located on the right side of the first limiting plate 21 and the upper side of the loading platform 10. The top of the loading platform 10 is used to place the object to be tested. The object to be tested can be, but is not limited to, circuit boards. During testing, the circuit boards to be tested can be stacked and placed on the loading platform 10. The first limiting plate 21 is used to limit the stacked objects to be tested. For example, the left side of the stacked circuit boards abuts against the inner side of the first limiting plate 21, which makes the circuit boards stacked more neatly and less prone to displacement.

[0052] The distribution assembly includes a distribution mechanism 30, which can be as follows: Figure 1 , Figure 2 , Figure 7The illustrated rods or other rods, or plate-like structures not shown in the figure, are all acceptable as long as they can be used to divide the space above the loading platform 10. The dispensing mechanism 30 is slidably mounted on the loading platform 10. The dispensing mechanism 30 has a first position and a second position that cooperate with the loading platform 10, and the dispensing mechanism 30 can move between the first position and the second position by user operation or by drive device.

[0053] When the sorting mechanism 30 is in the first position, the feeding device 100 is in a single-stack feeding state, suitable for placing a stack of large-sized circuit boards awaiting inspection on the feeding table 10, and also suitable for placing a stack of small-sized circuit boards awaiting inspection on the feeding table 10. (Refer to...) Figure 1 When the sorting mechanism 30 is in the first position, the first limiting plate 21 is located on the first side of the loading platform 10, and the sorting mechanism 30 is located on the second side of the loading platform 10. Both the first limiting plate 21 and the sorting mechanism 30 extend upward, and the material feeding space 101 is located between the first limiting plate 21 and the sorting mechanism 30.

[0054] For example, the first limiting plate 21 is located on the left side of the loading platform 10, and the sorting mechanism 30 is located on the right side of the loading platform 10. When a large circuit board is stacked and placed on the loading platform 10, it is located between the first limiting plate 21 and the sorting mechanism 30. The stack of circuit boards can be pushed directly to the left so that its left side abuts against the inner wall of the first limiting plate 21. This makes the stacked circuit boards more neat and limits their position. During the subsequent material handling process of the adsorption device, the stack of circuit boards can be kept in a neat and stable state. It should be noted that when the sorting mechanism 30 is in the first position, when a large circuit board is placed in the feeding space 101, the circuit board is in contact with the first limiting plate 21. The circuit board and the sorting mechanism 30 can be spaced apart or in contact with each other.

[0055] When the sorting mechanism 30 is in the second position, the loading device 100 is in a double-stack loading state, suitable for placing two stacks of small-sized circuit boards or other items to be tested on the loading table 10, with the sorting mechanism 30 separating the two stacks of items to be tested. (Refer to...) Figure 2 , Figure 5 When the sorting mechanism 30 is in the second position, the sorting mechanism 30 is located between the first side and the second side of the loading platform 10 (for example, the sorting mechanism 30 is located in the middle). At this time, the sorting mechanism 30 moves into the interior of the unloading space 101. The sorting mechanism 30 is used to divide the unloading space 101 into two stacking areas. Thus, the sorting mechanism 30 and the first limiting plate 21 form the first stacking area, and the side of the sorting mechanism 30 away from the first limiting plate 21 forms the second stacking area. Both stacking areas are used to place the object to be tested.

[0056] For example, the first limiting plate 21 is located on the left side of the sorting mechanism 30. Two stacks of small-sized circuit boards can be placed on the left and right sides of the sorting mechanism 30, respectively. The first stack of circuit boards is placed between the first limiting plate 21 and the sorting mechanism 30, with the left side of the first stack of circuit boards abutting against the inner wall of the first limiting plate 21. The first limiting plate 21 serves to hold and limit the first stack of circuit boards. The first stack of circuit boards can be spaced apart or in contact with the sorting mechanism 30. The second stack of circuit boards is placed on the right side of the sorting mechanism 30, with the left side of the second stack of circuit boards abutting against the sorting mechanism 30. The sorting mechanism 30 serves to hold and limit the second stack of circuit boards.

[0057] The feeding device 100 of this application, through the cooperation of the first limiting plate 21 and the feeding platform 10, can limit and organize the stacked circuit boards or other objects to be tested, so that the circuit boards are stacked more neatly and the subsequent material handling operation is more stable and reliable.

[0058] The feeding device 100 of this application moves between a first position and a second position through a sorting mechanism 30, realizing various needs such as sorting and storing single stacks of large-size boards, separating and sorting double stacks of small-size boards, and sorting and storing single stacks of small-size boards. It meets the adaptive stacking and unloading needs of circuit boards of various specifications and test objects of various models, and has wide adaptability and strong versatility.

[0059] In one embodiment, please refer to Figure 1 , Figure 2 , Figure 5 To improve the efficiency of placing and organizing circuit boards or other items to be tested, the loading assembly also includes a second limiting plate 22. In the y-direction, the first limiting plate 21 is located on one side of the loading platform 10, and in the x-direction, the second limiting plate 22 is located on one side of the loading platform 10. That is, the first limiting plate 21 and the second limiting plate 22 are positioned on adjacent sides of the loading platform 10. An L-shaped positioning structure is formed between the first limiting plate 21 and the second limiting plate 22. Both the first limiting plate 21 and the second limiting plate 22 extend upwards relative to the loading platform 10, and the material placement space 101 is located between the first limiting plate 21, the second limiting plate 22, and the loading platform 10. In this embodiment, the first limiting plate 21 and the second limiting plate 22 cooperate to form an L-shaped positioning structure. When the sorting mechanism 30 is in the second position, the sorting mechanism 30 and the second limiting plate 22 also cooperate to form an L-shaped positioning structure. Thus, by coordinating the positioning structures on both sides, the adjacent two sides of the circuit board are constrained. When the entire stack of circuit boards is placed on the loading platform 10, one corner of the circuit board can be directly aligned with the L-shaped positioning structure to ensure material feeding efficiency and stacking neatness.

[0060] Taking the first limiting plate 21 located on the left side of the loading platform 10 and the second limiting plate 22 located on the front side of the loading platform 10 as an example, during application, when the operator places the circuit board on the loading platform 10, they only need to push the upper left corner of the circuit board forward and to the left so that the upper left corner of the board rests against the L-shaped corner formed by the two limiting plates. That is, the front and left sides of the circuit board are respectively attached to the two limiting plates, achieving precise bidirectional alignment of the entire stack of circuit boards in the x and y directions. This ensures the consistency of the adsorption position of the subsequent adsorption device or robotic arm adsorbing the circuit boards. The double-sided limiting structure can effectively suppress interlayer misalignment caused by board deformation during stacking. Furthermore, the limiting plates on the adjacent sides of the loading platform 10 can position and limit the entire stack of circuit boards, preventing the next circuit board from shifting and falling off when the subsequent adsorption device adsorbs the previous one.

[0061] Furthermore, when the sorting mechanism 30 moves to the second position to adjust the feeding device 100 to a double-stack mode, two stacking areas are formed on the sides of the sorting mechanism 30, one near and one away from the first limiting plate 21. The first stack of circuit boards in the first stacking area on the left is attached to the first limiting plate 21 on the left and to the second limiting plate 22 on the front, achieving bidirectional positioning. The second stack of circuit boards in the second stacking area on the right is attached to the sorting mechanism 30 on the left and to the second limiting plate 22 on the front, also achieving bidirectional positioning. In this embodiment, when two stacks of small-sized circuit boards need to be stacked on the feeding table 10, the cooperation of the first limiting plate 21, the second limiting plate 22, and the sorting mechanism 30 can form two regular stacking areas that do not interfere with each other. This facilitates the adsorption device or robotic arm to alternately pick up circuit boards from the left and right stacking areas, improving picking efficiency or meeting the requirements for mixed inspection of different circuit boards.

[0062] Of course, in other embodiments, the second limiting plate 22 may not be provided.

[0063] In one embodiment, reference is made to Figures 1 to 4 , Figure 7To improve the stability of the dispensing mechanism 30 in moving and adjusting between the first and second positions, the dispensing assembly also includes a dispensing base 40, and the loading platform 10 is provided with a clearance hole 11. The material discharge space 101 is located on the upper side of the loading platform 10, and the dispensing base 40 is located on the lower side of the loading platform 10, that is, on the side of the loading platform 10 opposite to the material discharge space 101. The location of the dispensing base 40 does not affect material discharge. One end of the dispensing mechanism 30 is slidably mounted on the dispensing base 40 via a sliding assembly, and the other end of the dispensing mechanism 30 passes through the clearance hole 11 to extend straight to the upper side of the loading platform 10. The first limiting plate 21 is located on one side of the loading platform 10 in the y-direction. When the dispensing mechanism 30 is in the first position, the first limiting plate 21 and the dispensing mechanism 30 are spaced apart from each other in the y-direction of the loading platform 10. The clearance hole 11 extends along the y-direction. Thus, when adjusting the feeding device 100 to a single-stack or double-stack mode, the distributing mechanism 30 can be adjusted manually or mechanically / electrically, allowing its bottom end to slide along the y-direction on the distributing base 40. This allows the distributing mechanism 30 to slide along the clearance hole 11 of the feeding platform 10, adjusting between a first position and a second position. The clearance hole 11 on the feeding platform 10 serves two purposes: firstly, it allows the distributing mechanism 30 to slide to a position that divides the material feeding space 101 into two stacking areas; secondly, the clearance hole 11 provides sliding guidance and positioning for the distributing mechanism 30, making its trajectory more controllable.

[0064] Optionally, the sorting mechanism 30 includes multiple sorting guide rods 31. The sorting mechanism 30 and the first limiting plate 21 are spaced apart along the y-direction, and the multiple sorting guide rods 31 are spaced apart along the x-direction. The loading platform 10 is provided with multiple clearance holes 11 spaced apart along the x-direction, and each sorting guide rod 31 passes through one of its clearance holes 11. Compared with the traditional single sorting guide rod 31 solution, the multiple sorting guide rods 31 are spaced apart along the x-direction. When two stacks of circuit boards are placed on the loading platform 10, the multiple sorting guide rods 31 can move as a whole to the middle position of the loading platform 10 to separate the two stacks of circuit boards. Furthermore, the multiple sorting guide rods 31 spaced apart in the x-direction form a fence-like separation structure. The multiple sorting guide rods 31 make multiple contacts with one side of the second stack of circuit boards, which can make the second stack of circuit boards more neat and effectively limit the second stack of circuit boards to prevent lateral displacement during stacking. It also helps to make the circuit boards more evenly stressed. Furthermore, since the sorting mechanism 30 is distributed in the x direction, the multiple clearance holes 11 on the ground platform 10 are distributed in the x direction and each clearance hole 11 extends a certain distance in the y direction. In this way, it can ensure that the loading platform 10 meets the structural strength requirements and also allow each sorting guide rod 31 to move to the first position or the second position relative to the loading platform 10 in the y direction.

[0065] Optionally, refer to Figure 1 , Figure 3To facilitate the removal of the last circuit board from a stack of circuit boards by a suction device or robotic arm, the upper side of the loading platform 10 is provided with several support protrusions. Understandably, if the top side of the loading platform 10 were a flat plane, the bottommost circuit board would experience a certain suction force when placed on it, potentially increasing the difficulty for the suction device or robotic arm to remove it. To prevent the last circuit board from being stuck on the loading platform 10, this embodiment provides several support protrusions on the upper surface of the loading platform 10. This ensures that there is still sufficient space between the bottom circuit board and the loading platform 10 to prevent it from being suctioned by the negative pressure of the platform, allowing the suction device or robotic arm to reliably and stably remove the bottommost circuit board.

[0066] Optionally, refer to Figure 1 , Figure 2 , Figure 3 To ensure a more efficient fit between the distribution guide rod 31 and the loading platform 10 while simultaneously providing support protrusions, the support protrusions are configured as support strips 12 extending along the y-direction. Correspondingly, multiple support strips 12 are spaced apart along the x-direction on the upper side of the loading platform 10. When the circuit board is placed on the loading platform 10, the top of the support strip 12 directly contacts the bottom of the circuit board. The arrangement of multiple support strips 12 makes it easier to remove the last circuit board. Correspondingly, clearance holes 11 extending along the y-direction are provided between adjacent support strips 12, utilizing the gaps between adjacent support strips 12. In this embodiment, the support strips 12 and clearance holes 11 are arranged in an alternating manner, resulting in a more rational structure. This provides support for the bottom of the circuit board and prevents the last circuit board from being stuck on the loading platform 10 and difficult to remove. It also provides a sliding channel for the distribution guide rod 31 to move between the first and second positions. The loading platform 10 integrates multiple functions, and the components have good synergy.

[0067] In one embodiment, reference is made to Figure 4 , Figure 7 In the case where the dispensing mechanism 30 is equipped with multiple dispensing guide rods 31, in order to allow the multiple dispensing guide rods 31 to move together towards or away from the first limiting plate 21, the dispensing mechanism 30 includes a rod mounting base 32. The bottoms of the multiple dispensing guide rods 31 are all mounted on the rod mounting base 32. Correspondingly, the rod mounting base 32 is slidably mounted on the dispensing base 40 via a slide rail 41 extending in the y-direction, so as to realize that the dispensing mechanism 30 as a whole slides relative to the dispensing base 40, thereby switching and adjusting between the first position and the second position. In this embodiment, the multiple dispensing guide rods 31 are integrated into one unit by means of the rod mounting base 32, so as to realize the synchronous movement of the multiple dispensing guide rods 31, simplify the adjustment operation and ensure the consistency of the guide rod spacing.

[0068] Optionally, the rod mounting base 32 is provided with multiple rod mounting portions spaced apart along the x-direction, and each distributing guide rod 31 is mounted on any rod mounting portion. For example, the rod mounting base 32 is provided with 8 rod mounting portions spaced apart along the x-direction, and the rod mounting portions are rod mounting holes. The number of distributing guide rods 31 is less than or equal to the number of rod mounting portions. With this structural design of the rod mounting base 32, any number of rod mounting portions can be inserted into the rod mounting base 32 as needed. It is also possible to adjust the area range of the distributing guide rods 31 in the x-direction according to the size of the circuit board in the x-direction, making the overall design more flexible and meeting the separation requirements of circuit boards of different sizes.

[0069] In one embodiment, reference is made to Figure 4 , Figure 7 Based on the distribution base 40 of the distribution assembly, in order to ensure that the distribution mechanism 30 can be stably maintained in the first position and the second position, a first positioning part 421 and a second positioning part 422 are provided on the distribution base 40, which are spaced apart along the y-direction. The distribution assembly also includes a positioning element 50, which is detachably or movably installed on the distribution mechanism 30. The positioning element 50 can be, but is not limited to, a positioning pin, and is used to engage with the first positioning part 421 or the second positioning part 422 to hold the distribution mechanism 30 in the first position or the second position. In this embodiment, while the distribution mechanism 30 can slide on the distribution base 40 to switch positions, a dual positioning part is provided on the distribution base 40, which, combined with the detachable / movable positioning element 50, enables the rapid locking and releasing of the distribution mechanism 30 in the two positions. With the positioning component 50 in place, when the sorting mechanism 30 is in the second position, and two stacks of circuit boards are placed on both sides of the sorting mechanism 30, the sorting mechanism 30 can be kept stable in the second position without shaking, thus ensuring smooth board placement.

[0070] In other embodiments, the second positioning part 422 may only be provided on the dispensing base 40 to achieve locking and unlocking of the dispensing mechanism 30 in the second position. That is, the dispensing mechanism 30 does not need to be locked when in the first position.

[0071] Optionally, the positioning element 50 is a pull-out pin. One end of the pull-out pin is elastically mounted to the dispensing mechanism 30 via a spring or other elastic element, for example, on the rod mounting part. The other end of the pull-out pin can be inserted into either the first positioning part 421 or the second positioning part 422. When the second end of the pull-out pin is inserted into the first positioning part 421, the pull-out pin positions the dispensing mechanism 30 in the first position, which is suitable for placing a single stack of circuit boards on the loading table 10. When placing a double stack of circuit boards, the user only needs to pull up the pull-out pin to disengage it from the first positioning part 421, and then push the dispensing mechanism 30 to slide relative to the dispensing base 40 and the loading table 10 in the y-direction to the second position. Then, under the action of elastic force, the pull-out pin automatically engages with the second positioning part 422, and at this time, the pull-out pin positions the dispensing mechanism 30 in the second position. This embodiment uses an elastic pull-out pin as the positioning structure. The user only needs to pull the pin to operate, which improves the operating efficiency, reduces the learning cost, and increases the reliability.

[0072] In other embodiments, the dispensing mechanism 30 can also be positioned in the first or second position by means of magnetic attraction, snap-fit ​​limiting, etc.

[0073] In one embodiment, reference is made to Figure 6 In this embodiment, when the defect detection equipment is configured to adsorb circuit boards on the loading platform 10 via an adsorption device and lower the adsorbed circuit boards to the detection area, a loading frame 60 and a lifting drive device are also configured in the loading device 100 to facilitate the adsorption device in removing the circuit boards from the loading platform 10. The unloading space 101 is located on one side of the loading platform 10 in the z-direction. The loading platform 10 and the loading frame 60 are slidably connected in the z-direction. The lifting drive device is used to drive the loading platform 10 to move relative to the loading frame 60 in the z-direction. For example, after the adsorption device removes each circuit board, the lifting drive device drives the loading platform 10 to rise a certain distance to facilitate the adsorption device in picking up the next circuit board. In this embodiment, the lifting drive device on the z-axis is linked with the loading platform 10, which can dynamically adjust the picking height of the adsorption device to achieve continuous material supply from the loading platform 10 to the adsorption device.

[0074] Before testing, the lifting drive device can lower the loading platform 10 to its lowest position, at which point the loading platform 10 can have the maximum storage capacity.

[0075] In other embodiments, the loading platform 10 and the loading frame 60 may also be relatively fixed.

[0076] Please refer to Figure 8 The defect detection equipment includes a frame assembly, a loading module, a unloading module, a detection and conveying assembly 200, a first material transfer device 500, a second material transfer device 600, and an imaging assembly 700; the loading module includes at least two loading devices 100.

[0077] The detection and conveying assembly 200 is used to convey the object to be detected along the x-direction. The loading module includes two loading devices 100 respectively disposed on opposite sides of the detection and conveying assembly 200 in the y-direction; the unloading module includes a good product unloading device 300 and a defective product unloading device 400 respectively disposed on opposite sides of the detection and conveying assembly 200 in the y-direction. A first transfer device 500 is used to move between the loading module and the detection and conveying assembly 200. One or more first transfer devices 500 can be provided, and the first transfer device 500 can be an adsorption device. A second transfer device 600 is used to move between the detection and conveying assembly 200 and the unloading module. One or more second transfer devices 600 can be provided, and the second transfer device 600 can be an adsorption device.

[0078] Optionally, the detection conveying component 200 is installed in the middle of the entire device, serving as the main conveyor of the circuit board, and can be aligned using a straightening mechanism, blocking the conveyed circuit board at the end. The first transfer device 500 and the second transfer device 600 have degrees of freedom in the y and z directions, respectively, and can adsorb or place the circuit board on the loading device 100.

[0079] Taking a circuit board as an example, the inspection process of the defect inspection equipment of this application is as follows: The stacked circuit boards to be inspected are placed manually on the loading platforms 10 of the two loading devices 100 on the left and right sides of the inspection conveyor assembly 200. The first transfer device 500 picks up the circuit boards on the two loading devices 100 respectively, moves them along the y direction and then puts them down onto the conveyor belt of the inspection conveyor assembly 200. After being cleaned and aligned on the inspection conveyor assembly 200, the circuit boards are conveyed to the inspection station. The imaging components 700 on the upper and / or lower sides of the inspection station take pictures of the upper and lower surfaces of the circuit boards. The circuit boards that have passed the inspection station continue to be conveyed to the end of the inspection conveyor assembly 200. According to the inspection judgment result, if the circuit board is a good product, the second transfer device 600 transfers the circuit board to the good product unloading device 300. If the circuit board is a defective product, the second transfer device 600 transfers the circuit board to the defective product unloading device 400.

[0080] The defect detection equipment of this application has at least the following advantages: First, the entire equipment achieves multi-station feeding through the loading devices 100 on both the left and right sides, reducing manual feeding time. Second, through the adsorption devices of the first transfer device 500 and the second transfer device 600, the servo drive mechanism, and the module structure of the large-lead belt enable this solution to have a faster material handling speed, increasing product detection efficiency. Third, the loading device 100 can meet the loading requirements of single-stack and double-stack circuit boards.

[0081] In the description herein, it should be understood that the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationships shown in the accompanying drawings, and are used only for ease of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0082] In the description of this specification, references to terms such as "an embodiment," "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, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0083] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0084] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A defect detection device, characterized in that, Includes equipment frame and feeding device (100); The feeding device (100) includes: The feeding frame (60) is fixedly connected to the equipment frame; The feeding assembly has a feeding space (101); the feeding assembly includes a feeding platform (10) installed on the feeding frame (60) and a first limiting plate (21) disposed on the feeding platform (10), and the feeding space (101) is located between the first limiting plate (21) and the feeding platform (10); The sorting assembly includes a sorting mechanism (30) movable between a first position and a second position; When the sorting mechanism (30) is in the first position, the sorting mechanism (30) and the first limiting plate (21) are located on opposite sides of the loading platform (10), and the space between the first limiting plate (21) and the sorting mechanism (30) is used to place the object to be tested; the sorting mechanism (30) can move from the first position to the second position in a direction closer to the first limiting plate (21); when the sorting mechanism (30) is in the second position, it is located in the unloading space (101) and is used to separate the stacking area, and the space between the sorting mechanism (30) and the first limiting plate (21) and the side of the sorting mechanism (30) away from the first limiting plate (21) are both used to place the object to be tested.

2. The defect detection equipment according to claim 1, characterized in that, The feeding assembly includes a second limiting plate (22), which is disposed on the adjacent sides of the feeding platform (10) along with the first limiting plate (21). An L-shaped positioning structure is formed between the first limiting plate (21) and the second limiting plate (22). The feeding space (101) is located between the first limiting plate (21), the second limiting plate (22), and the feeding platform (10).

3. The defect detection equipment according to claim 1 or 2, characterized in that, The sorting assembly includes a sorting base (40), which is disposed on the side of the loading platform (10) away from the unloading space (101); The loading platform (10) is provided with a clearance hole (11). One end of the sorting mechanism (30) is slidably mounted on the sorting base (40), and the other end passes through the clearance hole (11) to extend to the upper side of the loading platform (10). The first limiting plate (21) is located on one side of the loading platform (10) in the y direction. The clearance hole (11) extends along the y direction. The sorting mechanism (30) can move along the y direction to move from the first position to the second position.

4. The defect detection equipment according to claim 3, characterized in that, The sorting mechanism (30) includes multiple sorting guide rods (31), which are spaced apart along the x-direction; the loading platform (10) is provided with multiple clearance holes (11) spaced apart along the x-direction, and each sorting guide rod (31) passes through one of the clearance holes (11).

5. The defect detection equipment according to claim 4, characterized in that, The upper side of the loading platform (10) is provided with a plurality of support protrusions (12), the support protrusions (12) extend along the y direction, and the plurality of support protrusions (12) are spaced apart along the x direction; the clearance hole (11) is located between adjacent support protrusions (12).

6. The defect detection equipment according to claim 4, characterized in that, The dispensing mechanism (30) includes a rod mounting base (32), which is slidably mounted on the dispensing base (40); the dispensing guide rod (31) is mounted on the rod mounting base (32).

7. The defect detection equipment according to claim 3, characterized in that, The sorting base (40) is provided with a first positioning part (421) and a second positioning part (422) spaced apart along the y direction; the sorting assembly includes a positioning member (50), which is detachably or movably installed on the sorting mechanism (30); The positioning member (50) is used to engage with the first positioning part (421) or the second positioning part (422) to hold the dispensing mechanism (30) in the first position or the second position.

8. The defect detection equipment according to claim 7, characterized in that, The positioning element (50) is a pull-out pin. One end of the pull-out pin is elastically installed on the dispensing mechanism (30) through an elastic element, and the other end can be selectively inserted into the first positioning part (421) or the second positioning part (422).

9. The defect detection equipment according to claim 1 or 2, characterized in that, The feeding device (100) includes a lifting drive device; The feeding space (101) is located on one side of the feeding platform (10) in the z direction. The feeding platform (10) and the feeding frame (60) are slidably connected in the z direction. The lifting drive device is used to drive the feeding platform (10) to move relative to the feeding frame (60) in the z direction.

10. The defect detection equipment according to claim 1 or 2, characterized in that, It includes a loading module, a unloading module, a detection and conveying assembly (200), a first transfer device (500), a second transfer device (600), and an imaging assembly (700); the loading module includes at least two loading devices (100) as described in any one of claims 1 to 9; The feeding module includes feeding devices (100) respectively disposed on opposite sides of the detection and conveying assembly (200); the unloading module includes a good product unloading device (300) and a defective product unloading device (400) respectively disposed on opposite sides of the detection and conveying assembly (200). The first transfer device (500) is used to move between the loading device (100) and the detection and conveying assembly (200); the second transfer device (600) is used to move between the detection and conveying assembly (200) and the unloading module; The imaging component (700) is used to acquire images of the object to be detected transmitted on the detection and transmission component (200).

Images