Electronic component six-surface visual detection device and detection method

Abstract

The invention belongs to the technical field of visual inspection, and particularly relates to a six-surface visual inspection device and method for an electronic element. The objective table is formed by vertically stacking an upper plug tray and a lower conical tray and is rotationally mounted on the supporting plate, the diameter of the lower conical tray is larger than that of the upper plug tray, a lower turned edge bent downwards is integrally formed on the inner edge of the upper plug tray, and an upper turned edge bent upwards is integrally formed on the inner edge of the lower conical tray; the air injection assembly comprises a pneumatic control switch, and a first nozzle and a second nozzle which are communicated with the pneumatic control switch; the detection method comprises the following steps: step 1, uniformly feeding; step 2, rotation detection; thirdly, air injection overturning is carried out; and step 4, air injection classification. According to the invention, the upper hole disc and the lower conical disc which are vertically stacked can be combined, the air injection assembly is used for automatically turning over the electronic element in the detection process, the surface of the electronic element does not need to be contacted, the turning efficiency is high, the electronic element cannot be damaged, the detection precision is ensured, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of visual inspection, and in particular relates to a six-side visual inspection device and inspection method for electronic components. Background Art

[0002] Visual inspection of electronic components is mainly based on computer vision and image processing technology. It uses high-resolution cameras to capture images of electronic components and analyzes and processes the images through image processing algorithms to identify surface defects, unprocessed parts, breakage, and other problems of components.

[0003] The general electronic component testing device includes the following parts: 1. Image acquisition unit Industrial cameras are the core components of visual inspection equipment, responsible for converting optical signals into electrical signals to form digital images.

[0004] The lens connects the industrial camera and the object to be inspected. Its main function is to focus light to make the object clearly imaged.

[0005] Light source: provides sufficient light for detection and ensures image quality.

[0006] 2. Image Acquisition and Processing Unit The image acquisition card is a bridge connecting industrial cameras and computers. Its main function is to transfer the analog or digital signals acquired by the camera to the computer memory for subsequent processing.

[0007] Computers and software, the software processes the collected images through various algorithms, such as filtering, edge detection, feature extraction, etc. These operations help to identify defects, dimensional deviations and other problems of electronic components.

[0008] 3. Mechanical and control unit Mechanical bracket and stage: The mechanical bracket is used to fix components such as camera, lens and light source to ensure their relative position is stable during the inspection process. The stage is used to place the object to be inspected and can accurately control the position and movement of the object so that the camera can capture all parts of the object.

[0009] Sensors and controllers: Sensors are used to detect whether an object is in place, and the controller controls the coordinated operation of various parts of the device based on the sensor's signals and preset programs. For example, the controller can control the brightness of the light source, the shooting timing of the camera, etc.

[0010] 4. Output and Feedback Unit Output results: Once a problem is detected, the visual inspection equipment can issue an alarm through sound, light signals, or directly integrate with other automation systems. In addition, some advanced systems are also able to provide detailed data analysis reports to help companies optimize production processes and improve product quality.

[0011] Feedback mechanism: Based on the test results, the equipment can automatically adjust the test parameters or trigger other automated equipment to perform corresponding actions, such as sorting, positioning or adjusting products on the production line.

[0012] In addition, since electronic components are small in size, they are generally loaded through a vibrating plate.

[0013] In the above-mentioned electronic component detection device, a transparent glass disc is generally selected as the stage, so that the electronic component is placed on its upper surface, and the surface of the electronic component can be detected by multiple sets of image acquisition units during the rotation process. However, there are the following shortcomings in the specific detection process: 1. When inspecting the upper surface of electronic components, industrial cameras can directly capture the image of the upper surface. However, when inspecting the lower surface, it is necessary to shoot through a transparent glass plate. This will cause the light transmittance of the transparent glass plate to affect the shooting quality. In addition, if electronic components are placed on the surface of the transparent glass plate for a long time, it is likely to be scratched, blurred, or stained, which will affect the shooting image and reduce the detection accuracy.

[0014] 2. Although there is a method in the prior art that can use a vacuum suction cup to turn over the electronic components for inspection, due to the small size of the electronic components, the suction cups require high precision, and it is sometimes difficult to suck them up and flip them smoothly. Not only is the efficiency low, but improper suction control can easily damage structures such as pins on the surface of the electronic components. Summary of the invention

[0015] The purpose of the present invention is to provide a six-sided visual inspection device and inspection method for electronic components, which can utilize a vertically stacked upper hole plate and a lower cone plate combination, and utilize a jet assembly to automatically turn the electronic components over during the inspection process without contacting their surfaces. The turning efficiency is high, and the electronic components will not be damaged, thereby ensuring the inspection accuracy and improving the inspection efficiency.

[0016] The technical solution adopted by the present invention is as follows: A six-sided visual inspection device for electronic components, comprising: Industrial cameras, at least one group is provided, and each group of industrial cameras is equipped with a focusing lens; The stage is formed by vertically stacking an upper hole tray and a lower cone tray, and is rotatably mounted on a support plate, wherein the diameter of the lower cone tray is larger than the diameter of the upper hole tray, the inner edge of the upper hole tray is integrally formed with a lower curling edge that bends downward, and the inner edge of the lower cone tray is integrally formed with an upper curling edge that bends upward, and the upper curling edge wraps the lower curling edge to form a curved folding channel to flip and transmit the electronic components on the surface of the upper hole tray to the surface of the lower cone tray for double-sided detection; The jet assembly includes a pneumatic control switch and a first nozzle and a second nozzle connected thereto, wherein the first nozzle is directed toward the upper hole plate to blow the electronic components on its surface to the curved folding channel, and the second nozzle is bent toward the edge of the lower cone plate to classify and output the electronic components after surface inspection.

[0017] As a preferred solution, a stepper motor is fixedly installed on the bottom surface of the support plate, and its power output end passes through the support plate and is fixedly connected to a flange rotating table. A support ring is fixedly installed on the power output end of the flange rotating table, the lower cone disk is fixedly installed on the support ring, and an encoder is connected to the top of the support ring.

[0018] As a preferred solution, an upper support column is fixedly installed on the top surface of the inner edge of the upper hole plate, a lower support column is fixedly installed on the bottom surface of the upper curled edge, the lower support column is vertically connected to the upper support column, and a connecting column is installed in a circular array on the bottom surface of the lower cone plate, and the connecting column is fixedly connected to the support ring by screws.

[0019] As a preferred solution, the industrial cameras are provided in four groups, and each group of the industrial cameras is equipped with a fill light board for fill light; Two of the groups are vertically mounted on the upper surface edges of the upper hole plate and the lower cone plate through a supporting mechanism for visual inspection of the upper and lower surfaces of the electronic components; The other two groups are horizontally installed on the inner and outer rings of the upper hole plate and the lower cone plate through a supporting mechanism for visual inspection of the four sides of the electronic components.

[0020] As a preferred solution, the upper hole plate and the lower cone plate have the same horizontal inclination angle, and the inclination angle is 5°-45°, and the upper curling edge and the lower curling edge are concentric arcs to form the curved folding channel with the same width at the top and bottom.

[0021] As a preferred embodiment, it also includes a collection box, which is provided with at least two groups and is arranged in a circular array on the periphery of the worktable. The pneumatic control switch, the first nozzle and the second nozzle are installed on the top of the collection box through an L-shaped bracket, so that the inspected electronic components can be classified and transported to the collection box through the second nozzle.

[0022] As a preferred solution, the outer edge of the lower cone is surrounded by a fence to prevent electronic components from falling. The fence has a notch on one side facing the collection box and is fixedly installed on both sides of the collection box by claws.

[0023] As a preferred embodiment, it also includes a cleaning component, which includes a first wiping roller and a second wiping roller attached to the surfaces of the upper hole plate and the lower cone plate, the first wiping roller and the second wiping roller are rotatably connected with roller brackets, and a U-shaped bracket is provided between the two groups of the roller brackets for support, a liquid supply pipeline is provided in the U-shaped bracket and is connected to a liquid supply main pipe, the liquid supply main pipe is connected to a liquid supply pump to transport cleaning liquid, a push cylinder is vertically installed on the support plate through a support mechanism to adjust the height of the first wiping roller and the second wiping roller, a support cross bar is fixedly installed on the power output end of the push cylinder, and the U-shaped bracket is fixedly installed on the support cross bar.

[0024] As a preferred solution, the supporting mechanism includes a horizontal support plate horizontally fixedly installed on the surface of the supporting plate, a horizontal slide slidably connected to the horizontal support plate, a vertical support plate vertically installed on the horizontal slide, and a vertical slide slidably connected to the vertical support plate, and a mounting plate is also fixedly installed on the vertical slide.

[0025] A six-sided visual inspection method for electronic components, applied to the above-mentioned six-sided visual inspection device for electronic components, comprises the following steps: Step 1: Uniform loading: The electronic components are transported to the edge of the upper hole plate at equal intervals through the vibration plate, and fall on the surface of the upper hole plate, with one side fitting the upper surface of the upper hole plate; Step 2: Rotation detection: The electronic components on the upper hole plate use the rotating centrifugal force to balance the tilting and sliding force, so that they remain on the surface of the upper hole plate and do not slide relatively. As the upper hole plate rotates, the upper surface and side surfaces are visually inspected using an industrial camera; Step 3, jet flipping: After the electronic component has undergone a round of inspection, when it passes through the first nozzle, the pneumatic control switch controls the first nozzle to jet and push it to slide into the curved folding channel, and flip it at least 180 degrees inside, so that the upper and lower surfaces are flipped, and the inspected side is attached to the upper surface of the lower cone disk, and the other side faces upward, and slides to the edge of the lower cone disk under the action of the centrifugal force of the rotation of the lower cone disk for a second round of inspection, realizing unobstructed six-sided inspection; Step 4: Jet classification: After the second round of inspection, that is, the six-side inspection is completed, the inspection results are analyzed through the control terminal, and the electronic components are classified. Then, the pneumatic control switch is used to control the second nozzle to blow different types of electronic components to different locations for collection.

[0026] The technical effects achieved by the present invention are: The present invention cooperates with an upper hole plate and a lower cone plate, and utilizes a lower curled edge integrally formed on the inner edge of the upper hole plate to form a curved folding channel in combination with an upper curled edge integrally formed on the inner edge of the lower cone plate. During the detection process, the first nozzle can be used to push the electronic component through the curved folding channel to flip the electronic component, thereby ensuring that the industrial camera can clearly photograph the six sides of the electronic component, so that the detection result will not be affected by the transparency and clarity of the upper hole plate and the lower cone plate, so as to ensure the clarity of the shooting and improve the detection accuracy; compared with the prior art, the electronic component flipping efficiency is higher, and there is no direct contact with the electronic component, thereby reducing damage to its surface.

[0027] The present invention can clean the upper surface of the upper hole plate and the lower cone plate before detection by setting a cleaning component, and at the same time use the first nozzle and the second nozzle to spray airflow to dry them, so that the electronic components can move more freely on the surface, reduce friction, and thus reduce the damage to the surface of the electronic components caused by friction. Secondly, the fill light effect of the fill light board is guaranteed, and the light is prevented from being blocked by stains on the surface of the upper hole plate and the lower cone plate, further improving the shooting clarity, and improving the detection accuracy and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the embodiment of the present invention; Figure 2 The present invention Figure 1 A top view of Figure 3 is a side view of the stage in the embodiment of the present invention; Figure 4 2 is a schematic diagram of the structure of the upper hole tray in an embodiment of the present invention; Figure 5 2 is a schematic diagram of the structure of the lower cone disk in an embodiment of the present invention; Figure 6 is a top view of the stage in the embodiment of the present invention; Figure 7 The present invention Figure 6 Cross-sectional view of the middle AA section; Figure 8 The present invention Figure 7 A magnified view of the part in the middle; Fig. 9 is a schematic diagram of the installation structure of some industrial cameras in an embodiment of the present invention; Fig.10 is a schematic diagram of the installation structure of another part of the industrial camera in the embodiment of the present invention; Fig.11 The present invention Fig.10 A schematic diagram of the structure from another perspective; Fig.12Schematic diagram of the combined structure of the stage, the jet assembly and the collection box in the embodiment of the present invention; Fig.13 Schematic diagram of the combined structure of the jetting assembly and the collecting box in an embodiment of the present invention; Fig.14 is a schematic diagram of the combined structure of the stage and the cleaning assembly in an embodiment of the present invention; Fig.15 is a schematic diagram of the back side of the general assembly structure in an embodiment of the present invention; Fig.16 It is a front schematic diagram of the general assembly structure in an embodiment of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Industrial cameras; 11. Focus lens; 12. Fill light board; 13. Horizontal support board; 14. Horizontal slide; 15. Vertical support board; 16. Vertical slide; 17. Mounting plate; 18. Camera support; 19. Infrared sensor; 110. Infrared receiver; 111. Extension arm; 112. Diagonal support arm; 113. L-shaped bracket plate; 2. Stage; 21. Upper acupuncture plate; 211, lower curling edge; 212, upper supporting column; 22. Lower cone; 221, upper curling edge; 222, lower supporting column; 223, connecting column; 23. Support ring; 24. Flange rotating table; 25. Stepper motor; 26. Encoder; 3. Jet assembly; 31. Pneumatic control switch; 32. First nozzle; 33. Second nozzle; 34. Enclosure; 4. Collection box; 5. Clean components; 51. First wiping roller; 52. Second wiping roller; 53. Roller bracket; 54. U-shaped bracket; 55. Liquid supply main pipe; 56. Support cross bar; 57. Push cylinder; 6. Vibration plate; 7. Cabinet. DETAILED DESCRIPTION

[0030] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0031] like Figure 1-Figure 16As shown, a six-sided visual inspection device for electronic components includes at least one set of industrial cameras 1 and focusing lenses 11, a stage 2 for placing electronic components, a jet assembly 3 for conveying electronic components, and a collection box 4 for receiving electronic components; all of them are installed on a support plate in a cabinet 7, and are loaded through a vibrating plate 6, the electronic components are delivered into the cabinet 7, and placed on the surface of the stage 2, the stage 2 is driven to rotate, and the six sides of the electronic components are gradually inspected by the industrial camera 1, and after the inspection is completed, the electronic components are sorted into the collection box 4 by the jet assembly 3.

[0032] See attached Figure 2-Figure 8 The stage 2 is formed by vertically stacking an upper hole tray 21 and a lower cone tray 22; wherein the upper hole tray 21 is concave downwardly in a conical shape, and a downwardly curved lower curling edge 211 is integrally formed on its inner edge, while the lower cone tray 22 is conically convex upwardly in a conical shape, and an upwardly curved upper curling edge 221 is integrally formed on its inner edge, and a curved folding channel can be formed at the inner edges of the upper hole tray 21 and the lower cone tray 22 by wrapping the upper curling edge 221 around the lower curling edge 211, so that the electronic components on the surface of the upper hole tray 21 can be flipped and transmitted to the surface of the lower cone tray 22 after passing through the curved folding channel (such as the attached Figure 8 for double-sided detection.

[0033] It should be noted that the diameter of the lower cone disk 22 is greater than the diameter of the upper hole disk 21, so that when the electronic component flips over and falls to the surface of the lower cone disk 22, it can fall to the outer edge of the lower cone disk 22 that is not blocked by the upper hole disk 21, so that its upper surface at this time (that is, the lower surface before flipping) can be clearly photographed by the industrial camera 1 without being blocked, thereby avoiding the influence of the transmittance and clarity of the traditional glass stage on its detection accuracy.

[0034] Furthermore, the upper hole plate 21 and the lower cone plate 22 have the same horizontal inclination angle of 9°, and the upper curling edge 221 and the lower curling edge 211 are concentric arcs, thereby forming a curved folding channel with the same width at the top and bottom, so that the electronic components can be turned over more smoothly inside it without getting stuck.

[0035] Of course, in some other embodiments, the horizontal inclination angle can be selected within the range of 5°-45°, such as 5°, 22.5°, 45°, etc., so that the curved folding channel meets the detection requirements and is suitable for different types of electronic components; secondly, the diameters of the upper curling edge 221 and the lower curling edge 211 can also be selected according to electronic components of different sizes in order to adapt to electronic components of different sizes.

[0036] In this embodiment, the upper hole plate 21 and the lower cone plate 22 are also made of high-transmittance tempered glass to ensure light transmittance and facilitate light supplementation. At the same time, they have good wear resistance to avoid damage caused by friction and affect detection.

[0037] In some other embodiments, the upper hole plate 21 and the lower cone plate 22 may be made of materials such as transparent plastic, which may be selected according to specific application scenarios.

[0038] Please refer to the attached Figure 4-Figure 7 In order to vertically assemble the upper hole plate 21 and the lower cone plate 22 into one, an upper support column 212 is fixedly installed on the top surface of the inner edge of the upper hole plate 21, and a lower support column 222 is fixedly installed on the bottom surface of the upper curling edge 221. The lower support column 222 and the upper support column 212 can be vertically plugged into one, or they can be vertically fixed together using a connecting pin.

[0039] Please refer to the attached Figure 3 as well as Figure 7 In order to drive the stage 2 to rotate and detect the six sides of the electronic component, a stepper motor 25 is fixedly installed on the bottom surface of the support plate, and its power output end passes through the support plate and is fixedly connected to a flange rotating platform 24, and a support ring 23 is fixedly installed on the power output end of the flange rotating platform 24, and at the same time, a connecting column 223 is installed in a circular array on the bottom surface of the lower cone disk 22, and the connecting column 223 is fixedly connected to the support ring 23 by screws to realize the installation of the lower cone disk 22 and the support ring 23, and then the stepper motor 25 drives the upper hole disk 21 and the lower cone disk 22 to rotate evenly through the flange rotating platform 24, so that the industrial camera 1 can perform comprehensive inspections on the six sides of the electronic component.

[0040] It should be noted that during the rotation detection process, the electronic components located on the surface of the upper hole plate 21 can use centrifugal force to balance the downward force caused by their own gravity, so that they remain stationary on the surface of the upper hole plate 21; at the same time, the electronic components falling to the surface of the lower cone plate 22 can slide down the inclined surface to its edge under the action of centrifugal force for detection, and at the same time, a barrier 34 is provided on the outer ring of the lower cone plate 22 to prevent the electronic components from falling.

[0041] See attached Figure 1-Figure 2 In this embodiment, four groups of industrial cameras 1 and focusing lenses 11 are provided, and a fill light board 12 for backlighting is provided on the direct surface of the focusing lens 11, so that sufficient light source can be provided by the fill light board 12, and the focusing lens 11 is used to focus the light, and then the optical signal is converted into an electrical signal by the industrial camera 1 to form a digital image, which is then identified and analyzed by the detection system of the control terminal whether the electronic component has defects.

[0042] It should be noted that, in this embodiment, the industrial camera 1 is a CCD camera and is equipped with a telephoto lens.

[0043] Again refer to the attached Figure 1-Figure 2Two groups of industrial cameras 1 are vertically installed on the upper hole plate 21 and the lower cone plate 22, and are set at the feed port and the discharge port. The industrial camera 1 close to the feed port is vertically opposite to the upper surface edge of the upper hole plate 21 to detect the upper surface of the electronic component, and the industrial camera 1 close to the discharge port is vertically opposite to the edge of the lower cone plate 22 that is not covered by the upper hole plate 21, so as to detect the lower surface of the electronic component.

[0044] Please refer to the attached Figure 1 as well as Fig. 9 In order to support two groups of industrial cameras 1, focusing lens 11 and fill light board 12, a horizontal support plate 13 is fixedly installed horizontally on the surface of the support plate, and a horizontal slide 14 is slidably connected to the surface of the support plate, and a vertical support plate 15 is vertically installed on the horizontal slide 14, and a vertical slide 16 is slidably connected to the vertical support plate 15. By fixing a mounting plate 17 on the vertical slide 16, the industrial camera 1 and the focusing lens 11 can be vertically supported by vertically installing a camera support 18 on the top of the mounting plate 17, and another group of vertical slides 16 and mounting plates 17 are installed at the bottom to support the fill light board 12.

[0045] Again refer to the attached Figure 1-Figure 2 The other two sets of industrial cameras 1 are horizontally installed on the inner and outer circles of the upper hole plate 21 and the lower cone plate 22 for visual inspection of the four sides of the electronic components.

[0046] Please refer to the attached Figure 1 as well as Figure 10-11 In order to support a group of industrial cameras 1, focusing lens 11 and fill light board 12 located on the inner circle of the upper hole plate 21 and the lower cone plate 22, a horizontal support plate 13 is fixedly installed horizontally on the surface of the support plate at the outer circle of the upper hole plate 21 and the lower cone plate 22, and a horizontal slide 14 is slidably connected to its surface, and a vertical support plate 15 is vertically installed on the horizontal slide 14, and two groups of vertical slides 16 are slidably connected to the vertical support plate 15, and mounting plates 17 are horizontally fixedly installed on both groups of vertical slides 16; an extension arm 111 is fixedly installed at the end of the upper group of mounting plates 17 to support the installation of a camera support 18 so as to fix the industrial camera 1 and the focusing lens 11.

[0047] Secondly, correspondingly, the fill light board 12 of the group is also fixedly installed on the outer circles of the upper hole plate 21 and the lower cone plate 22 directly opposite to the industrial camera 1 through the horizontal support plate 13, the horizontal slide 14, the vertical support plate 15, the vertical slide 16 and the mounting plate 17.

[0048] It should be noted that an L-shaped bracket plate 113 is fixedly installed between the camera support 18 and the extension arm 111, and an encoder 26 is supported and installed on the L-shaped bracket plate 113, and is connected to the flange rotating table 24 to monitor its rotation speed, rotation cycle, number of circles and other rotation state values, so as to detect and control the electronic components on the stage 2.

[0049] Please refer to the attached Figure 1 as well as Figure 10-11 In order to support a group of industrial cameras 1, focusing lenses 11 and fill light boards 12 located on the outer circles of the upper hole tray 21 and the lower cone tray 22, a horizontal support plate 13 is fixedly installed horizontally on the surface of the support plate at the outer circles of the upper hole tray 21 and the lower cone tray 22, and a horizontal slide 14 is slidably connected to its surface, and a vertical support plate 15 is vertically installed on the horizontal slide 14, and a vertical slide 16 is slidably connected to the vertical support plate 15. The industrial camera 1 and the focusing lens 11 are horizontally supported by fixing a mounting plate 17 horizontally fixedly installed on the vertical slide 16, and then horizontally installing a camera support 18 through the mounting plate 17; on the contrary, a diagonal support arm 112 is fixedly installed on one side of the end of the upper group of mounting plates 17 to support the group of fill light boards 12 installed on the inner circles of the upper hole tray 21 and the lower cone tray 22.

[0050] Secondly, an infrared sensor 19 and an infrared receiver 110 are installed under another set of mounting plates 17 located below, which span the upper hole plate 21 and the lower cone plate 22, so as to identify the electronic components passing therebetween, facilitate the control of the rotational transportation of the electronic components, and control each industrial camera 1 to photograph and detect the electronic components.

[0051] See attached Figure 1 as well as Figure 12-13 In this embodiment, three groups of collecting boxes 4 are arranged in a circular array and arranged on the outer periphery of the stage 2 to collect three types of electronic components, namely, defective, good and to-be-manually-inspected. At the same time, by combining a stacking bracket with an L-shaped bracket, three groups of jet assemblies 3 are also provided on the top of the collecting box 4, which include a pneumatic control switch 31 and a first nozzle 32 and a second nozzle 33 connected thereto. Through the first nozzle 32 toward the upper hole plate 21, the electronic components on its surface can be blown to the curved folding channel, and at the same time, the second nozzle 33 is bent toward the edge of the lower cone plate 22, so as to classify and output the electronic components after surface inspection.

[0052] It should be noted that the enclosure 34 is fixedly installed on both sides of the collection box 4 by means of claws to fix it, and at the same time, the lower cone 22 can rotate at a uniform speed relative to the enclosure 34, and a gap is opened on the side of the enclosure 34 facing the collection box 4, so that the second nozzle 33 can be used to classify and collect the inspected electronic components into the collection box 4 through the gap.

[0053] Of course, in some other embodiments, at least two groups of collecting boxes 4 may be provided, and the same number of jet assemblies 3 may be matched with the collecting boxes 4 to classify the electronic components.

[0054] See attached Figure 1 , Figure 2 as well as Fig.14 In this embodiment, a cleaning assembly 5 is also included, which includes a first wiping roller 51 and a second wiping roller 52 attached to the surfaces of the upper hole plate 21 and the lower cone plate 22. Both of them are rotatably connected with a roller bracket 53, and a U-shaped bracket 54 is provided between the two groups of roller brackets 53 for support. By providing a liquid supply pipeline in the U-shaped bracket 54 and connecting with a liquid supply main pipe 55, the liquid supply main pipe 55 can be used to connect with a liquid supply pump to transport cleaning liquid to the first wiping roller 51 and the second wiping roller 52, and wipe and clean the surfaces of the upper hole plate 21 and the lower cone plate 22 when they are in contact with the surfaces of the upper hole plate 21 and the lower cone plate 22. At the same time, the first nozzle 32 and the second nozzle 33 are used to spray airflow to dry them, so that the electronic components can move more freely on their surface, reduce friction, and thus reduce the damage to the surface of the electronic components caused by friction. Secondly, it can ensure the fill light effect of the fill light board 12, avoid the light being blocked by stains on the surface of the upper hole plate 21 and the lower cone plate 22, improve the shooting clarity of the industrial camera 1, and further improve the detection accuracy and quality.

[0055] In order to control the height of the first wiping roller 51 and the second wiping roller 52, a pushing cylinder 57 is also vertically installed on the support plate through the horizontal support plate 13, the horizontal slide 14, the vertical support plate 15, the vertical slide 16 and the mounting plate 17. By fixing a supporting cross bar 56 on the power output end of the pushing cylinder 57 and fixing the U-shaped bracket 54 on the supporting cross bar 56, the first wiping roller 51 and the second wiping roller 52 can be pushed by the pushing cylinder 57 to contact the surface of the upper hole plate 21 and the lower cone plate 22 to wipe them before the detection starts. After cleaning, the pushing cylinder 57 is used to lift them up to affect the progress of the detection operation.

[0056] like Figure 1-Figure 16 As shown, a six-sided visual inspection method for electronic components is applied to the six-sided visual inspection device for electronic components in this embodiment, comprising the following steps: Step 1: uniform loading: the control terminal controls the pushing cylinder 57 to push the first wiping roller 51 and the second wiping roller 52 to wipe the upper hole plate 21 and the lower cone plate 22; after wiping and air drying, the electronic components are transported one by one to the edge of the upper hole plate 21 at equal intervals through the vibration plate 6, and fall on the surface of the upper hole plate 21, with one side being in contact with the upper surface of the upper hole plate 21.

[0057] Step 2, rotation detection: The electronic components use the rotating centrifugal force on the upper hole tray 21 to balance the inclined downward force, so that they remain on the surface of the upper hole tray 21 and do not slide relatively. Therefore, they rotate with the upper hole tray 21 and use two sets of horizontally arranged industrial cameras 1 to perform visual inspection on their sides. At the same time, use the industrial camera 1 vertically arranged near the feed port to perform visual inspection on their upper surface.

[0058] Step 3, jet flipping: After the electronic component has been tested, when it passes through the first nozzle 32, the pneumatic control switch 31 controls the first nozzle 32 to jet and push it to slide into the curved folding channel, and flip it at least 180 degrees inside, so that the upper and lower surfaces are flipped, and the tested side is attached to the upper surface of the lower cone 22, and the other side is facing upward (as shown in the attached Figure 8 As shown in the figure, and slides to the edge of the lower cone disk 22 under the action of the centrifugal force of the rotation of the lower cone disk 22, and the inner and outer sides are also exchanged at the same time during the flipping process, so that the side surface can be visually inspected twice by two sets of horizontally arranged industrial cameras 1 to improve the inspection accuracy, and the visual inspection of the lower surface is carried out by the industrial camera 1 vertically arranged near the discharge port, thereby realizing unobstructed six-sided inspection.

[0059] Step 4, jet classification: After the second round of inspection is completed, that is, the six-side inspection is completed, the inspection results are analyzed through the control terminal, and the electronic components are classified. Then, the pneumatic control switch 31 controls the second nozzle 33 to spray the electronic components located on the surface of the lower cone disk 22, and blows them into the collection boxes 4 at different positions according to the inspection results to achieve visual inspection classification.

[0060] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A six-sided visual inspection device for electronic components, characterized in that: include: Industrial cameras (1), at least one group is provided, and each group of the industrial cameras (1) is equipped with a focusing lens (11); The loading platform (2) is formed by vertically stacking an upper hole tray (21) and a lower cone tray (22), and is rotatably mounted on a support plate, wherein the diameter of the lower cone tray (22) is greater than the diameter of the upper hole tray (21), the inner edge of the upper hole tray (21) is integrally formed with a lower curling edge (211) that bends downward, and the inner edge of the lower cone tray (22) is integrally formed with an upper curling edge (221) that bends upward, the upper curling edge (221) wraps around the lower curling edge (211) to form a curved folding channel to flip the electronic components on the surface of the upper hole tray (21) and transfer them to the surface of the lower cone tray (22) for double-sided detection; The jet assembly (3) comprises a pneumatic control switch (31) and a first nozzle (32) and a second nozzle (33) connected thereto, wherein the first nozzle (32) is directed toward the upper hole plate (21) to blow the electronic components on its surface to the curved folding channel, and the second nozzle (33) is bent toward the edge of the lower cone plate (22) to classify and output the electronic components after surface inspection.

2. The six-sided visual inspection device for electronic components according to claim 1, characterized in that: A stepper motor (25) is fixedly mounted on the bottom surface of the support plate, and a power output end of the stepper motor passes through the support plate and is fixedly connected to a flange rotating platform (24), a support ring (23) is fixedly mounted on the power output end of the flange rotating platform (24), the lower cone disk (22) is fixedly mounted on the support ring (23), and an encoder (26) is connected to the top of the support ring (23).

3. The six-sided visual inspection device for electronic components according to claim 2, characterized in that: An upper support column (212) is fixedly mounted on the top surface of the inner edge of the upper hole plate (21), a lower support column (222) is fixedly mounted on the bottom surface of the upper curling edge (221), the lower support column (222) is vertically connected to the upper support column (212), and connecting columns (223) are mounted in a circular array on the bottom surface of the lower cone plate (22), and the connecting columns (223) are fixedly connected to the support ring (23) by means of screws.

4. The six-sided visual inspection device for electronic components according to claim 1, characterized in that: The industrial cameras (1) are provided in four groups, and each group of the industrial cameras (1) is equipped with a fill light panel (12) for fill light; Two of the groups are vertically mounted on the upper surface edges of the upper hole plate (21) and the lower cone plate (22) through a supporting mechanism for visually inspecting the upper and lower surfaces of electronic components; The other two groups are horizontally mounted on the inner and outer rings of the upper hole plate (21) and the lower cone plate (22) through a supporting mechanism and are used for visual inspection of the four sides of the electronic components.

5. The six-side visual inspection device for electronic components according to claim 4, characterized in that: The upper hole plate (21) and the lower cone plate (22) have the same horizontal inclination angle, and the inclination angle is 5°-45°. The upper curling edge (221) and the lower curling edge (211) are concentric arcs, so as to form the curved folding channel with the same width at the top and the bottom.

6. The six-sided visual inspection device for electronic components according to claim 1, characterized in that: It also includes a collection box (4), which is provided with at least two groups and is arranged in a circular array on the periphery of the stage (2); the pneumatic control switch (31), the first nozzle (32) and the second nozzle (33) are installed on the top of the collection box (4) via an L-shaped bracket, so that the electronic components after inspection are transported to the collection box (4) in a classified manner via the second nozzle (33).

7. The six-side visual inspection device for electronic components according to claim 6, characterized in that: The outer edge of the lower cone (22) is surrounded by a baffle (34) to prevent electronic components from falling; the baffle (34) is provided with a notch on one side facing the collection box (4) and is fixedly mounted on both sides of the collection box (4) by means of supporting claws.

8. The six-sided visual inspection device for electronic components according to claim 1, characterized in that: The cleaning device also comprises a cleaning assembly (5), comprising a first wiping roller (51) and a second wiping roller (52) attached to the surfaces of the upper hole plate (21) and the lower cone plate (22); a roller support (53) is rotatably connected inside the first wiping roller (51) and the second wiping roller (52); a U-shaped support (54) is provided between the two groups of roller supports (53) for support; a liquid supply pipeline is provided inside the U-shaped support (54) and is connected to a liquid supply main pipe (55); the liquid supply main pipe (55) is connected to a liquid supply pump for conveying cleaning liquid; a push cylinder (57) is vertically mounted on the support plate through a support mechanism for adjusting the height of the first wiping roller (51) and the second wiping roller (52); a support cross bar (56) is fixedly mounted on the power output end of the push cylinder (57); and the U-shaped support (54) is fixedly mounted on the support cross bar (56).

9. The six-side visual inspection device for electronic components according to claim 4 or 8, characterized in that: The support mechanism comprises a horizontal support plate (13) fixedly mounted horizontally on the surface of the support plate, a horizontal slide (14) slidably connected to the horizontal support plate (13), a vertical support plate (15) vertically mounted on the horizontal slide (14), and a vertical slide (16) slidably connected to the vertical support plate (15), wherein a mounting plate (17) is also fixedly mounted on the vertical slide (16).

10. A six-sided visual inspection method for electronic components, applied to a six-sided visual inspection device for electronic components as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: uniform loading: electronic components are transported one by one at equal intervals to the edge of the upper hole plate (21) through the vibrating plate (6), and fall onto the surface of the upper hole plate (21), with one side of the electronic components being in contact with the upper surface of the upper hole plate (21); Step 2, rotation detection: The electronic component uses the rotation centrifugal force on the upper hole plate (21) to balance the tilting and sliding force, so that it remains on the surface of the upper hole plate (21) and does not slide relatively, so that it follows the rotation of the upper hole plate (21) and uses the industrial camera (1) to perform visual inspection on its upper surface and side surface; Step 3, jet flipping: after the electronic component has undergone a round of inspection, when it passes through the first nozzle (32), the pneumatic control switch (31) controls the first nozzle (32) to jet and push it to slide into the curved folding channel, and flip it at least 180 degrees inside, so that the upper and lower surfaces are flipped, and the inspected side is attached to the upper surface of the lower cone disk (22), and the other side is upward, and slides to the edge of the lower cone disk (22) under the action of the centrifugal force of the rotation of the lower cone disk (22) to perform a second round of inspection, thereby realizing unobstructed six-sided inspection; Step 4: jet classification: After the second round of inspection is completed, that is, the six-side inspection is completed, the inspection results are analyzed through the control terminal, and the electronic components are classified. Then, the pneumatic control switch (31) controls the second nozzle (33) to jet and blow different types of electronic components to different locations for collection.

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