Automatic optical appearance inspection machine

Abstract

The present invention provides an automatic optical appearance inspection machine, which at least includes two circulating conveying devices arranged side by side, an upper inspection device and a horizontal inspection device respectively corresponding to the two circulating conveying devices, a lifting drive device corresponding to the horizontal inspection device, a flipping device and a transplanting and unloading device coordinated with the two circulating conveying devices, the flipping device can flip the product on the positioning fixture transported by one circulating conveying device and transfer it to the positioning fixture transported by another circulating conveying device, and the lifting drive device can cooperate with the positioning fixture transported above it to drive the positioning fixture to rotate through lifting. The present invention is simple and convenient to operate, effectively saves manpower, material resources and time, can accurately and comprehensively automatically inspect the front and back of the product, is not prone to false detection, missed detection, etc., thereby improving the overall quality and yield of the product, high production efficiency, and reducing production costs.

Description

Technical Field

[0001] The present disclosure relates to a detection device, and in particular to an automatic optical appearance detection machine. Background Art

[0002] With the continuous progress of society and the rapid development of science and technology, the demand for many products is increasing, and the requirements are getting higher and higher. Therefore, it is necessary to ensure product quality and improve production efficiency to meet production needs. Mechanical automation and intelligence are inevitable development trends. At present, electronic products such as mobile phones, digital cameras, laptops, tablets, Bluetooth headsets, etc. have extremely high requirements for appearance. During the manufacturing process of these products, stains, scratches, copper leakage, bruises, whitening, darkening and other defects will appear on the surface of the products. Qualified products are not allowed to have these defects, so it is necessary to conduct corresponding inspections on the products. However, the traditional method of relying on manual inspection, coupled with the limitations of the materials used and the lighting conditions of the workshop, is inconvenient to operate, has high labor intensity, low detection accuracy, occupies more manpower and material resources, consumes a lot of time, and the human eye is easily fatigued after long-term work. The characteristic differences of some defects are also relatively subtle. Coupled with the limitations of product materials and workshop lighting conditions, it is easy to produce false detections, missed detections, etc., which is not conducive to production control, thereby affecting the overall quality and yield of the product, low production efficiency, low output, unable to meet production needs, high production costs, and reducing the competitiveness of the product. Summary of the invention

[0003] The purpose of the present disclosure is to provide an automatic optical appearance inspection machine, which can solve at least one of the above technical problems. The technical solution of the present disclosure is as follows:

[0004] The automatic optical appearance inspection machine comprises at least two circulating conveying devices arranged side by side, an upper detection device and a horizontal detection device respectively corresponding to the two circulating conveying devices, a lifting drive device corresponding to the horizontal detection device, a flipping device and a transplanting and unloading device cooperating with the two circulating conveying devices, the circulating conveying device can circulate the positioning jig for positioning and placing products, the flipping device can flip the product on the positioning jig transported by one circulating conveying device and transfer it to the positioning jig transported by another circulating conveying device, and the lifting drive device can cooperate with the positioning jig transported above it through lifting to drive the positioning jig to rotate.

[0005] In some embodiments, the positioning jig includes a jig plate, on which is provided a rotating positioning seat for positioning and placing the product and a locking block elastically matched with the rotating positioning seat, and the rotating positioning seat is provided with a locking groove matched with the locking block, and the lifting drive device can push the locking block to move to release the locking block from locking the rotating positioning seat and drive the rotating positioning seat to rotate after being unlocked.

[0006] In some embodiments, the lifting drive device includes a first driving mechanism and a first push rod driven by a first lifting mechanism. The output shaft of the first driving mechanism faces upward and is coaxially connected to a first joint that can be connected to a rotating positioning seat. As the first lifting mechanism pushes the first driving mechanism and the first push rod to move upward, the first push rod can push the locking block to move to release the locking block from locking the rotating positioning seat, and the first joint can be connected to the rotating positioning seat to drive the rotating positioning seat to rotate.

[0007] In some embodiments, a first inclined surface is provided at the top of the first push rod, and a first through hole matching the first inclined surface is provided in the vertical direction on the locking block. As the first lifting mechanism pushes the first push rod to move upward, the first inclined surface can push the locking block to move horizontally to release the locking block from locking the rotating positioning seat.

[0008] In some embodiments, the flipping device includes a rotating clamping mechanism, a second lifting mechanism that drives the rotating clamping mechanism to move up and down, and a second driving mechanism that drives the second lifting mechanism to move horizontally.

[0009] In some embodiments, the transplanting and unloading device includes a vacuum suction cup, a third lifting mechanism for driving the vacuum suction cup to move up and down, and a third driving mechanism for driving the third lifting mechanism to move horizontally.

[0010] In some embodiments, the circulating conveying device includes two horizontal conveying frames arranged vertically and lifting conveying components respectively arranged at both ends of the two horizontal conveying frames. The horizontal conveying frames are provided with a first conveying track for horizontal movement of the positioning jig, a first driving component for driving the positioning jig to move along the first conveying track, and a first positioning component for cooperating with the positioning jig. The first driving component can push the positioning jig positioned by the first positioning component along the first conveying track to the lifting conveying component at one end, and can push the positioning jig on the lifting conveying component at the other end to the first conveying track and position it through the first positioning component. The lifting conveying component can drive the positioning jig thereon to move up and down to correspond to the two horizontal conveying frames.

[0011] In some embodiments, the lifting and conveying assembly includes a first support and a fourth lifting mechanism that drives the first support to move up and down, and the first support is provided with a second conveying track and a positioning baffle for cooperating with the positioning fixture.

[0012] In some embodiments, the first positioning assembly includes a second bracket, on which is disposed a first positioning block capable of elastically positioning the positioning jig, and the first driving assembly can release the positioning of the positioning jig by the first positioning block to push the positioning jig to move along the first conveying track.

[0013] In some embodiments, the first driving assembly includes a push plate and a fourth driving mechanism that drives the push plate to push the positioning fixture to move along the first conveying track.

[0014] The beneficial effect of the present invention is that during use, the two circulating conveying devices arranged side by side respectively circulate and convey the positioning jigs on which the products are placed, the upper detection device and the horizontal detection device corresponding to one of the circulating conveying devices first accurately and comprehensively detect the front of the product, and then the flipping device flips the product after the front detection and transfers it to the positioning jig conveyed by the other circulating conveying device, and then the back of the product is accurately and comprehensively detected by the corresponding upper detection device and the horizontal detection device, the descending drive device can also cooperate with the positioning jig conveyed above it by lifting and lowering to drive the product on the positioning jig to rotate, and then the transplanting and unloading device removes the product from the positioning jig after detection and places it on the positioning jig Placed on the unloading table, this process is repeated, so as to realize accurate and comprehensive automatic inspection of the product. The operation is simple and convenient, the labor intensity is low, and it effectively saves manpower, material resources and time. It can accurately and comprehensively detect stains, scratches, copper leakage, bruises, surface whitening, darkening and other defects on the front and back of the product. The detection accuracy is high, and it is not easy to cause false detection and missed detection, thereby improving the overall quality and yield of the product, high production efficiency and high output, and facilitating production control and automated online production of products to meet production needs. It is suitable for appearance inspection of electronic products such as mobile phones, digital cameras, laptops, tablet computers, Bluetooth headsets, etc. It has a wide range of applications, reduces production costs, and enhances product competitiveness.

[0015] In addition, in the technical solution disclosed in the present invention, unless otherwise specified, the technical solution can be implemented by adopting conventional means in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a three-dimensional diagram of an automatic optical appearance inspection machine according to an embodiment of the present disclosure.

[0018] Figure 2 This is a top view of an automatic optical appearance inspection machine according to an embodiment of the present disclosure with the upper casing removed.

[0019] Figure 3 It is a three-dimensional diagram of a circulating conveying device according to an embodiment of the present disclosure.

[0020] Figure 4 It is a front view of a circulating conveying device according to an embodiment of the present invention.

[0021] Figure 5 It is a three-dimensional diagram of a lifting and conveying assembly according to an embodiment of the present disclosure.

[0022] Figure 6 It is a three-dimensional diagram of a one-way pushing mechanism according to an embodiment of the present invention.

[0023] Figure 7 It is a stereoscopic view of a first positioning assembly according to an embodiment of the present disclosure.

[0024] Figure 8 It is a schematic structural diagram of the cooperation between the first positioning component and the one-way pushing mechanism and the positioning fixture according to an embodiment of the present invention.

[0025] Fig. 9 It is a first stereoscopic view of a lifting drive device according to an embodiment of the present disclosure.

[0026] Fig.10 For one embodiment of the present disclosure Fig. 9 A partial enlarged view of point A in the middle.

[0027] Fig.11 It is a second stereoscopic view of the lifting drive device according to an embodiment of the present invention.

[0028] Fig.12 It is a three-dimensional diagram of a flipping device according to an embodiment of the present disclosure.

[0029] Fig.13 It is a stereoscopic view of a transplanting and feeding device according to an embodiment of the present disclosure.

[0030] Fig.14 This is a first stereoscopic view of a positioning fixture according to an embodiment of the present disclosure.

[0031] Fig.15 This is a second stereoscopic view of a positioning fixture according to an embodiment of the present disclosure.

[0032] Fig.16 It is a third stereoscopic view of a positioning fixture according to an embodiment of the present disclosure.

[0033] Description of the reference numerals in the accompanying drawings: circulating conveying device 1, horizontal conveying frame 11, lifting conveying assembly 12, first support 121, first avoidance hole 1211, fourth lifting mechanism 122, second conveying track 123, second linear slide 1231, positioning baffle 124, fourth bracket 125, first conveying track 13, first linear slide 131, first positioning assembly 14, fifth bracket 141, first positioning block 142, second elastic member 143, positioning head 144, second connecting column 145, third linear slide 146, first driving assembly 15, Pushing plate 151, fourth driving mechanism 152, one-way pushing mechanism 153, first mounting seat 1531, pushing block 1532, third elastic member 1533, pushing portion 1534, second inclined surface 1535, first rotating shaft 1536, third trough 537, first fixing seat 16, upper detection device 2, horizontal detection device 3, lifting driving device 4, first lifting mechanism 41, first cylinder 411, first driving mechanism 42, first motor 421, first axial plane 422, first push rod 43, first inclined surface 431, first joint 44, first Second plug-in part 441, first flange 442, first bracket 45, first mounting plate 46, second through hole 461, first sensor 47, first sensor sheet 48, flipping device 5, rotating clamping mechanism 51, first rotating cylinder 511, first pneumatic clamping jaw 512, second lifting mechanism 52, second driving mechanism 53, second bracket 54, transplanting and unloading device 6, vacuum suction cup 61, third lifting mechanism 62, third driving mechanism 63, third bracket 64, suction cup seat 65, positioning fixture 7, fixture plate 71, fourth linear slide rail 711, first trough body 712, second slot body 713, second avoidance hole 714, rotation positioning seat 72, locking groove 721, first positioning column 722, locking block 73, first protrusion 731, first through hole 732, first elastic member 74, first spring 741, first connecting column 75, first connecting block 76, first connecting hole 761, first plug-in portion 762, first positioning plate 77, first positioning groove 771, collision block 78, third inclined surface 781, frame 8, working base plate 81, caster with adjustment block 82, upper casing 83, multi-layer warning light 84, unloading table 9. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present disclosure, rather than all of the embodiments, and are only used to explain the present disclosure, and are not used to limit the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0035] In the description of the present disclosure, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "two ends", "both sides", "bottom", "top" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present disclosure. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary" and the like are used for descriptive purposes only, and can simply be used to more clearly distinguish different components, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0037] like Figures 1 to 16 As shown, an automatic optical appearance inspection machine is schematically shown, which comprises at least two circulating conveying devices 1 arranged side by side, an upper inspection device 2 and a horizontal inspection device 3 respectively corresponding to the two circulating conveying devices 1, a lifting drive device 4 corresponding to the horizontal inspection device 3, a flipping device 5 and a transplanting and unloading device 6 corresponding to the two circulating conveying devices 1, the circulating conveying device 1 can cyclically convey a positioning fixture 7 for positioning and placing products, and these devices are usually installed on a working bottom plate 81 of a frame 8, the upper inspection device 2 is located above the circulating conveying device 1, and the horizontal inspection device 3 is located above the circulating conveying device 1. In the horizontal direction of the device 1, the flipping device 5 is located at one end of the two circulating conveying devices 1, and the transplanting and unloading device 6 is located at the other end of the two circulating conveying devices 1. The flipping device 5 can flip the product on the positioning fixture 7 transported by one circulating conveying device 1 and transfer it to the positioning fixture 7 transported by another circulating conveying device 1. The lifting drive device 4 can cooperate with the positioning fixture 7 transported above it through lifting to drive the positioning fixture 7 to rotate, so that the front and back of the product can be accurately and comprehensively automatically detected through the upper detection device 2 and the horizontal detection device 3 corresponding to the two circulating conveying devices 1.

[0038] The upper detection device 2 has a first camera located above the circulating conveyor 1, and the horizontal detection device has a horizontally arranged second camera. The first camera and the second camera are respectively mounted on corresponding brackets. The brackets can be respectively provided with slides, linear modules, etc. that match the first camera and the second camera. The slides can be cross slides or three-axis slides, etc., so as to facilitate the adjustment of the height position of the first camera and the horizontal position of the second camera, so as to better detect the products on the positioning fixture 7. The brackets can also be respectively provided with light sources that correspond to the first camera and the second camera, such as coaxial light sources, annular light sources, backlight sources, etc. The number and arrangement of light sources are determined according to the specific situation. The light source can provide a better detection environment and higher detection accuracy. Usually, the first camera and the second camera can adopt CCD cameras with small size, light weight, no influence of magnetic field, good vibration and impact resistance. The first camera and the second camera can also be replaced with laser detectors such as 3D scanners, three-dimensional scanners, and three-dimensional intelligent sensors, so that the detection is more accurate and comprehensive.

[0039] The flipping device 5 includes a rotating clamping mechanism 51, a second lifting mechanism 52 for driving the rotating clamping mechanism 51 to move up and down, and a second driving mechanism 53 for driving the second lifting mechanism 52 and the rotating clamping mechanism 51 to move horizontally as a whole. The second driving mechanism 53 is installed on the second bracket 54. Through the second lifting mechanism 52 and the second driving mechanism 53, the rotating clamping mechanism 51 can clamp the product from the positioning fixture 7 in one circulating conveying device 1, and flip the product 180° and then transfer it to the positioning fixture 7 in another circulating conveying device 1. The rotating clamping mechanism 51 is a rotating pneumatic clamping jaw, and clamping blocks are respectively arranged on the two clamping jaws of the rotating pneumatic clamping jaw. The rotating pneumatic clamping jaw is a swinging pneumatic clamping jaw, which is a combination of the first rotating cylinder 511 and the first pneumatic clamping jaw 512. The two clamping jaws of the rotating pneumatic clamping jaw are located on the rotating head thereof. The rotating pneumatic clamping jaw can push the two clamping blocks to move in the horizontal direction so that the two clamping blocks clamp the product or release the product, thereby clamping and placing the corresponding product. Pneumatic grippers, also known as pneumatic fingers or pneumatic grippers, are actuators that use compressed air as power to clamp or grab workpieces. They can effectively improve production efficiency and work safety. The use of pneumatic fingers not only has a simple structure, but also has a good clamping effect. The two clamping blocks are also respectively provided with elastic protective layers, anti-skid films or anti-skid textures that match the product, which have better clamping effects, higher stability and reliability.

[0040] The transplanting and unloading device 6 includes a vacuum suction cup 61, a third lifting mechanism 62 for driving the vacuum suction cup 61 to move up and down, and a third driving mechanism 63 for driving the third lifting mechanism 62 and the vacuum suction cup 61 to move horizontally as a whole. The third driving mechanism 63 is installed on the third bracket 64. The vacuum suction cup 61 is usually installed on a suction cup seat 65. The suction cup seat 65 is connected to the third lifting mechanism 62. The number and arrangement of the vacuum suction cups 61 on the suction cup seat 65 depend on the actual situation of the specific product. A material unloading table 99 corresponding to the transplanting and unloading device 6 can also be set on the working bottom plate 81 of the frame 8, which is convenient for placing the products after the inspection is completed, and is also convenient for continuous production in coordination with the subsequent packaging and classification process equipment of the product.

[0041] The second driving mechanism 53 and the third driving mechanism 63 can be in the form of a cylinder, a hydraulic cylinder, an electric cylinder, a linear module, etc., and usually a linear module can be used, which has high motion accuracy, stability, and convenient control. The second lifting mechanism 52 and the third lifting mechanism 62 can be in the form of a cylinder, a hydraulic cylinder, an electric cylinder, a linear module, etc., and usually a cylinder, such as a cylinder with a guide rod, a slide cylinder, etc., which has a simple and compact structure, is easy to install and maintain, and is safe and environmentally friendly.

[0042] The positioning fixture 7 includes a fixture plate 71, on which a rotation positioning seat 72 and a locking block 73 are provided. The rotation positioning seat 72 is used to position and place the corresponding product. The locking block 73 is elastically matched with the rotation positioning seat 72 to elastically lock the rotation positioning seat 72. The rotation positioning seat 72 is provided with a locking groove 721 that matches the locking block 73. When the positioning fixture 7 corresponds to the horizontal detection device 3 and needs to drive the rotation positioning seat 72 to rotate, the lifting drive device 4 located below the positioning fixture 7 works, and the lifting drive device 4 pushes the locking block 73 to move and separate from the locking groove 721 by lifting, so that the locking block 73 releases the lock on the rotation positioning seat 72. At the same time, the lifting drive device 4 is connected to the rotation positioning seat 72, and then drives the unlocked rotation positioning seat 72 to rotate. After the lifting drive device 4 is separated from the positioning fixture 7, the locking block 73 can also automatically reset to re-lock the rotation positioning seat 72.

[0043] The locking block 73 is provided with a first protrusion 731 matched with the locking groove 721 . The first protrusion 731 is inserted into the locking groove 721 , so that the locking block 73 locks the rotation positioning seat 72 , and the structure is more compact and stable.

[0044] The rotating positioning seat 72 is provided with a first positioning column 722 for positioning and placing the product. The corresponding product can be stably placed on the rotating positioning seat 72 through the first positioning column 722. The number and arrangement of the first positioning columns 722 depend on the specific product. Of course, depending on the product, the first positioning column 722 can also be a positioning groove that matches the product.

[0045] The jig plate 71 is provided with a first elastic member 74 elastically connected to the locking block 73. When the locking block 73 locks the rotation positioning seat 72, the first elastic member 74 can make the locking block 73 exert a certain pressure on the rotation positioning seat 72, so as to lock the rotation positioning seat 72 more stably. When the lifting drive device 4 pushes the locking block 73 to release the locking of the rotation positioning seat 72, the first elastic member 74 is stretched or compressed. After the lifting drive device 4 does not act on the locking block 73, the first elastic member 74 can also drive the locking block 73 to reset to re-lock the rotation positioning seat 72. Usually, the first elastic member 74 is a first spring 741, and the jig plate 71 and the locking block 73 are respectively provided with a first connecting column 75 connected to the first spring 741, which has a simple structure and is easy to operate.

[0046] The jig plate 71 is provided with a fourth linear slide 711 that matches the movement of the locking block 73. The track of the fourth linear slide 711 is fixed on the jig plate 71. The locking block 73 is connected to the slider of the fourth linear slide 711, so as to ensure that the locking block 73 moves more smoothly. The jig plate 71 is also provided with a first groove 712 that matches the fourth linear slide 711. The locking block 73 can also be provided with a groove that matches the slider of the first linear slide 131. The fourth linear slide 711 is placed in the first groove 712, and the structure is more compact and stable. Of course, the fourth linear slide 711 can also be replaced by a slide that matches the locking block 73, or matching guide rails and slides can be provided on the jig plate 71 and the locking block 73.

[0047] A first through hole 732 for cooperating with the lifting drive device 4 is provided on the locking block 73 in the vertical direction, and a second avoidance hole 714 corresponding to the first through hole 732 is provided on the fixture plate 71. The push rod of the lifting drive device 4 passes through the second avoidance hole 714 and cooperates with the first through hole 732 to push the locking block 73 to move horizontally, thereby releasing the locking block 73 from locking the rotating positioning seat 72.

[0048] The lifting drive device 4 includes a first driving mechanism 42 and a first push rod 43. The first lifting mechanism 41 can drive the first driving mechanism 42 and the first push rod 43 to move up and down as a whole. The output shaft of the first driving mechanism 42 faces upward and is fixedly connected with a first joint 44. The output shaft of the first driving mechanism 42 is coaxial with the first joint 44. The top of the first push rod 43 is provided with a first inclined surface 431. As the first lifting mechanism 41 pushes the first driving mechanism 42 and the first push rod 43 to move upward as a whole, the first push rod 43 can push the locking block 73 to move horizontally through the first inclined surface 431 and the first through hole 732, so that the locking block 73 releases the lock on the rotation positioning seat 72, and the first joint 44 can be connected to the rotation positioning seat 72, so that the first driving mechanism 42 can drive the rotation positioning seat 72 to rotate, so that the horizontal detection device 3 can accurately and comprehensively detect the products on the rotation positioning seat 72 from all directions.

[0049] The first lifting mechanism 41 is installed on the first bracket 45. The first lifting mechanism 41 can be in the form of a cylinder, an oil cylinder, an electric cylinder, a linear module, etc., and usually in the form of a cylinder, which has a simple and compact structure, is easy to install and maintain, safe, and environmentally friendly. The first lifting mechanism 41 is a first cylinder 411, such as a precision slide cylinder, a cylinder with a guide rod, etc. The first cylinder 411 drives the first driving mechanism 42 and the first push rod 43 to move up and down as a whole.

[0050] The first driving mechanism 42 can adopt a motor, a rotating cylinder, a hollow rotating table, etc. Usually, the first driving mechanism 42 is a first motor 421, such as a stepping motor, a servo motor, etc. The first joint 44 is fixedly connected to the output shaft of the first motor 421, and the first joint 44 is coaxial with the output shaft of the first motor 421.

[0051] The bottom of the rotation positioning seat 72 is provided with a first connection block 76, and the first connection block 76 is provided with a first connection hole 761 connected to the first joint 44. A first plug-in portion 762 matching with the first joint 44 is provided in the first connection hole 761 along the vertical direction, and a second plug-in portion 441 matching with the first plug-in portion 762 is provided on the first joint 44 along the vertical direction. The first plug-in portion 762 and the second plug-in portion 441 are usually mutually matching plug strips and slots, so that the first joint 44 is fixed in the circumferential direction after being connected to the first connection hole 761, and the rotation positioning seat 72 is driven to rotate more stably. The number and arrangement of the first plug-in portion 762 and the second plug-in portion 441 are determined according to the specific situation. Usually, multiple first plug-in portions 762 are evenly distributed along the circumferential direction of the first connection hole 761, and multiple second plug-in portions 441 are evenly distributed along the circumferential direction of the first joint 44, so that the force is more uniform, more stable and reliable. The fixture plate 71 is also provided with a second groove body 713 matched with the first connecting block 76, so that the structure is more compact and stable.

[0052] The first joint 44 and the output shaft of the first drive mechanism 42 can be connected by threading, welding, etc. The first joint 44 is located at the top of the output shaft of the first drive mechanism 42, and the first joint 44 is provided with a first flange 442 that matches the output shaft of the first drive mechanism 42. After the first joint 44 is connected to the output shaft of the first drive mechanism 42, the first flange 442 can be pressed against the top of the output shaft of the first drive mechanism 42, which makes the operation more convenient and the structure more stable.

[0053] The first driving mechanism 42 and the first push rod 43 are mounted on the first mounting plate 46, and the first mounting plate 46 is connected to the first lifting mechanism 41. The first lifting mechanism 41 pushes the first driving mechanism 42 and the first push rod 43 to move up and down through the first mounting plate 46, which makes the operation more convenient. Usually, the first driving mechanism 42 is located below the first mounting plate 46, and the first mounting plate 46 is provided with a second through hole 461 for the output shaft of the first driving mechanism 42 to pass through, so that the structure is more compact, stable, and the operation is more convenient.

[0054] A first sensor 47 is disposed on the first mounting plate 46, and a first sensing sheet 48 matched with the first sensor 47 is disposed on the output shaft of the first driving mechanism 42. The first sensor 47 and the first sensing sheet 48 facilitate determination of the zero position and control of the degree of rotation. A first axial plane 422 matched with the first sensing sheet 48 is also disposed on the output shaft of the first driving mechanism 42, which makes it easier to install the first sensing sheet 48.

[0055] The circulating conveying device 1 includes two horizontal conveying frames 11 and two lifting conveying assemblies 12. The two horizontal conveying frames 11 are installed on the first fixed seat 16. The two horizontal conveying frames 11 are arranged up and down. The two lifting conveying assemblies 12 are respectively located at the two ends of the two horizontal conveying frames 11. The lifting conveying assemblies 12 can respectively cooperate with the two horizontal conveying frames 11 through lifting. One lifting conveying assembly 12 corresponds to the loading station, and the other lifting conveying assembly 12 corresponds to the unloading station. The first driving assembly 15 of the upper layer has opposite driving directions to the first driving assembly 15 of the lower layer. The horizontal conveying frame 11 is provided with a first conveying track 13 for horizontal movement of a positioning fixture 7 for placing products, a first driving assembly 15 for driving the positioning fixture 7 to move along the first conveying track 13, and a first positioning assembly 14 for cooperating with the positioning fixture 7.

[0056] The detection device corresponding to the upper horizontal conveyor frame 11 may be one, two or more. Usually, the upper horizontal conveyor frame 11 corresponds to multiple horizontal detection devices 3 and upper detection devices 2. The horizontal detection devices 3 and the upper detection devices 2 are arranged in sequence along the conveying direction of the horizontal conveyor frame 11. The horizontal conveyor frame 11 is provided with a first positioning assembly 14 corresponding to the horizontal detection device 3 and the upper detection device 2 one by one. The number of positioning fixtures 7 transported on the horizontal conveyor frame 11 is usually consistent with the number of horizontal detection devices 3 and upper detection devices 2. Usually, the number of the first positioning components 14 and the conveyed positioning fixtures 7 on the two horizontal conveying frames 11 is the same. Each time the first driving component 15 is pushed, there is always a one-to-one corresponding positioning fixture 7 in the horizontal detection device 3 and the upper detection device 2, respectively. At the same time, the first driving component 15 on the upper layer pushes a positioning fixture 7 from the lifting and conveying component 12 to the first conveying track 13 for positioning through the first positioning component 14 or pushes it to the lifting and conveying component 12, and the first driving component 15 on the lower layer pushes a positioning fixture 7 to the lifting and conveying component 12 or pushes it from the lifting and conveying component 12 to the first conveying track 13 for positioning through the first positioning component 14.

[0057] The first conveying track 13 is a horizontally arranged first linear slide 131, the track of the first linear slide 131 is installed on the horizontal conveying frame 11, and a groove body matching the track of the first linear slide 131 can be arranged on the horizontal conveying frame 11, and the positioning fixture 7 is connected to the slider of the first linear slide 131, and a groove body matching the slider of the first linear slide 131 can be arranged on the positioning fixture 7, so that the movement is more stable and the precision is higher. Of course, the first linear slide 131 can also be replaced by a slide groove matching the positioning fixture 7, or matching guide rails and slideways can be arranged on the horizontal conveying frame 11 and the positioning fixture 7.

[0058] The lifting and conveying assembly 12 includes a first support 121 and a fourth lifting mechanism 122 that drives the first support 121 to move up and down. The first support 121 is provided with a second conveying track 123 and a positioning baffle 124 for cooperating with the positioning fixture 7. The fourth lifting mechanism 122 drives the first support 121 to move up and down so that the second conveying track 123 can be docked with the first conveying tracks 13 of the two horizontal conveying frames 11 respectively, so as to facilitate the conveying of the positioning fixture 7 from the lifting and conveying assembly 12 to the horizontal conveying frame 11 or from the horizontal conveying frame 11 to the lifting and conveying assembly 12. The positioning baffle 124 can perform edge positioning on the positioning fixture 7, so that the positioning fixture 7 is more stable on the first support 121 and the operation is more convenient.

[0059] The fourth lifting mechanism 122 can be a pneumatic cylinder, an oil cylinder, an electric cylinder, a linear module, etc., and can usually be a linear module, which has high motion accuracy, stability, and convenient control. The fourth lifting mechanism 122 is installed on the fourth bracket 125, and the fourth bracket 125 can also be provided with a linear slide rail that cooperates with the up and down movement of the first support 121, so that the movement is more stable and reliable.

[0060] The second conveying track 123 is a horizontally arranged second linear slide rail 1231. A groove body matching the second linear slide rail 1231 can be arranged on the first support 121, so that the movement is more stable and the precision is higher. Of course, the second linear slide rail 1231 can also be replaced by a slide groove matching the positioning fixture 7, or matching guide rails and slideways can be arranged on the first support 121 and the positioning fixture 7.

[0061] The first support 121 is provided with a first avoidance hole 1211 matched with the first driving assembly 15 . The first avoidance hole 1211 can avoid the push plate 151 of the first driving assembly 15 , thereby making it easier for the push plate 151 to push the positioning fixture 7 to move.

[0062] The first positioning assembly 14 includes a fifth bracket 141, on which a first positioning block 142 capable of elastically positioning the positioning jig 7 is provided. When the positioning jig 7 is transported to the first positioning block 142 along the first conveying track 13, the first positioning block 142 is subjected to a certain force and moves so that it can be pressed against the positioning jig 7, such as in a positioning groove on the positioning jig 7, so as to position the positioning jig 7, so that the corresponding detection device can detect the product on the positioning jig 7. The first driving assembly 15 continues to push the positioning jig 7 to move along the first conveying track 13, and the first positioning block 142 is subjected to a certain force and moves to release its positioning of the positioning jig 7. The first positioning block 142 can also be automatically reset by elastic recovery, with a simple and stable structure and convenient operation.

[0063] The fifth bracket 141 is provided with a second elastic member 143 elastically connected to the first positioning block 142. The second elastic member 143 is usually a spring. The first positioning block 142 and the fifth bracket 141 are respectively provided with a second connecting column 145 connected to the second elastic member 143. When the first positioning block 142 positions the positioning fixture 7, the second elastic member 143 is stretched or compressed so that it has a certain pressure on the positioning fixture 7. After the positioning fixture 7 is separated from the first positioning block 142, the second elastic member 143 can also drive the first positioning block 142 to automatically reset. The structure is simple, stable and easy to operate.

[0064] The first positioning block 142 is provided with a positioning head 144 for positioning the positioning fixture 7, the positioning fixture 7 is provided with a first positioning plate 77, and the first positioning plate 77 is provided with a first positioning groove 771 that matches the positioning head 144, so that the positioning fixture 7 can be positioned conveniently through the first positioning groove 771. The positioning head 144 can be located below the positioning fixture 7, or in other suitable directions of the positioning fixture 7.

[0065] The fifth bracket 141 is also provided with a third linear guide rail 146 that matches the movement of the first positioning block 142. The first positioning block 142 is connected to the slider of the third linear guide rail 146. The fifth bracket 141 may be provided with a groove that matches the third linear guide rail 146. The first positioning block 142 may be provided with a groove that matches the slider of the third linear guide rail 146, thereby ensuring that the first positioning block 142 moves more smoothly. Of course, the third linear guide rail 146 may also be replaced by a slide groove that matches the first positioning block 142, or matching guide rails and slideways may be provided on the fifth bracket 141 and the first positioning block 142.

[0066] The first driving assembly 15 includes a push plate 151 and a fourth driving mechanism 152 that drives the push plate 151 to push the positioning fixture 7 to move along the first conveying track 13. The push plate 151 is provided with a one-way push mechanism 153 for one-way pushing the positioning fixture 7 to move. The number and arrangement of the one-way push mechanisms 153 are determined according to the number of the conveyed positioning fixtures 7 and the number and arrangement of the first positioning assemblies 14. The fourth driving mechanism 152 can be in the form of a cylinder, an oil cylinder, an electric cylinder, a linear module, etc., and can usually be in the form of a linear module, which has high motion accuracy, is stable, and is easy to control.

[0067] The one-way pushing mechanism 153 includes a first mounting seat 1531, which is mounted on the pushing plate 151. The first mounting seat 1531 is hinged with a pushing block 1532. The pushing block 1532 is provided with a pushing portion 1534. The back of the pushing portion 1534 is formed with a second inclined surface 1535. The first mounting seat 1531 is also provided with a third elastic member 1533 that cooperates with the pushing block 1532. When the pushing block 1532 pushes the positioning jig 7 to move along the first conveying track 13, the front of the pushing portion 1534 presses against the positioning jig 7, and the pushing block 1532 cannot swing up and down at this time. When the pushing block 1532 moves in the opposite direction for reset, the second inclined surface 1535 can cooperate with the positioning jig 7 to make the pushing block 1532 swing downward, so that the material block can pass from under the positioning jig 7. The pushing block 1532 can also automatically reset through the third elastic member 1533, thereby realizing a unidirectional push of the positioning jig 7 movement.

[0068] The first mounting seat 1531 is provided with a first rotating shaft 1536 hinged to the pushing block 1532 and a third groove body 537 which cooperates with the rotation of the pushing block 1532. The first rotating shaft 1536 is arranged horizontally, and the third elastic member 1533 is usually arranged below one end of the pushing block 1532 close to the pushing part 1534. The third elastic member 1533 is usually a spring, and the two ends of the third elastic member 1533 cooperate with the first mounting seat 1531 and the pushing block 1532 respectively. The first mounting seat 1531 and the pushing block 1532 can also be provided with groove bodies which cooperate with the two ends of the third elastic member 1533. When the pushing block 1532 pushes the positioning fixture 7 to move along the first conveying track 13, the front side of the pushing portion 1534 is pressed against the positioning fixture 7, and the end of the pushing block 1532 away from the pushing portion 1534 is pressed against the bottom surface of the third slot 537 so that the pushing block 1532 cannot swing up and down around the first rotating shaft 1536. When the pushing block 1532 moves in the opposite direction for resetting, the second inclined surface 1535 can cooperate with the positioning fixture 7 to make the pushing block 1532 swing downward, and the third elastic member 1533 is compressed so that the material block can pass through the bottom of the positioning fixture 7. The pushing block 1532 can also be automatically reset by the compressed third elastic member 1533, thereby realizing the unidirectional pushing of the positioning fixture 7 movement.

[0069] The bottom of both ends of the jig plate 71 along its conveying direction are respectively provided with collision blocks 78 that cooperate with the pushing block 1532, and the end faces facing each other of the two collision blocks 78 are also provided with a third inclined surface 781. When the pushing block 1532 moves in the opposite direction and passes through the collision block 78 and the jig plate 71, the second inclined surface 1535 cooperates with the third inclined surface 781 to enable the pushing block 1532 to swing downward more smoothly, and can also reduce or eliminate contact between the pushing block 1532 and the jig plate 71.

[0070] The two lifting and conveying components 12 of the circulating conveying device 1 correspond to the loading station and the unloading station respectively. The product to be inspected is placed on the positioning fixture 7 on the lifting and conveying component 12 corresponding to the loading station. The lifting and conveying component 12 drives the positioning fixture 7 to cooperate with the upper horizontal conveying frame 11. The first driving component 15 of the upper layer pushes the positioning fixture 7 from the lifting and conveying component 12 to the first conveying track 13 of the upper layer, and pushes the positioning fixture 7 to be transported along the first conveying track 13. After the first positioning component 14 positions the positioning fixture 7, the corresponding upper detection device 2 and the horizontal detection device 3 can detect the product on the positioning fixture 7. After the detection is completed, the first driving component 15 of the upper layer pushes the positioning fixture 7 to the lifting and conveying component 12 corresponding to the unloading station, and then removes the product from the positioning fixture 7 through the flipping device 5 or the transplanting unloading device 6, and the lifting and conveying component 12 drives again The empty positioning jig 7 corresponds to the horizontal conveying frame 11 of the lower layer, and the first driving component 15 of the lower layer pushes the empty positioning jig 7 to the first conveying track 13 for conveying, and finally the empty positioning jig 7 returns to the lifting and conveying component 12 corresponding to the loading station. Each time the first driving component 15 is pushed, the upper detection device 2 and the horizontal detection device 3 always correspond to a positioning jig 7 one by one, and at the same time, the first driving component 15 of the upper layer pushes a positioning jig 7 from the lifting and conveying component 12 to the first conveying track 13 for positioning through the first positioning component 14 or pushes it to the lifting and conveying component 12, and the first driving component 15 of the lower layer pushes a positioning jig 7 to the lifting and conveying component 12 or pushes it from the lifting and conveying component 12 to the first conveying track 13 for positioning through the first positioning component 14, and this process is repeated, thereby realizing continuous cyclic conveying of the positioning jig 7.

[0071] The bottom of the frame 8 can be provided with casters 82 with adjustment blocks. Usually, casters 82 with adjustment blocks are respectively provided at the four end corners of the bottom of the frame 8. The casters 82 with adjustment blocks are convenient for moving and leveling the equipment as a whole, which is easy to operate and improves the flexibility and stability of the equipment. The frame 8 is also provided with an upper housing 83. The circulating conveying device 1, the upper detection device 2, the horizontal detection device 3, the lifting drive device 4, the flipping device 5 and the transplanting and unloading device 6 are all located in the upper housing 83, so that it is safer and more reliable. The upper housing 83 can also be provided with multi-layer warning lights 84. The multi-layer warning lights 84 are also called multi-layer signal lights, indicator lights, industrial signal lights or tower lights. They are usually used in industrial production equipment and transmission control operations. They mainly transmit the equipment status or transmission status to machine operators, technicians, production managers and factory personnel with visual and sound signals. By providing multi-layer warning lights 84, the safety of the equipment is improved.

[0072] During use, the two circulating conveying devices 1 arranged side by side respectively circulate and convey the positioning fixtures 7 for placing the products. The upper detection device 2 and the horizontal detection device 3 corresponding to one of the circulating conveying devices 1 first accurately and comprehensively detect the front of the product, and then the flipping device 5 flips the product after the front detection and transfers it to the positioning fixture 7 conveyed by the other circulating conveying device 1. Then, the back of the product is accurately and comprehensively detected by the corresponding upper detection device 2 and the horizontal detection device 3. When the positioning fixture 7 corresponds to the horizontal detection device 3 and needs to drive the rotating positioning seat 72 to rotate, the lifting drive device 4 under the positioning fixture 7 works, and the first lift The structure 41 drives the first driving mechanism 42 and the first push rod 43 to move upward as a whole, so that the first push rod 43 cooperates with the first through hole 732461 through the first inclined surface 431 to push the locking block 73 to move horizontally to release the locking block 73 from locking the rotating positioning seat 72. At the same time, the first joint 44 is connected to the first connecting block 76 at the bottom of the rotating positioning seat 72, and then the first driving mechanism 42 drives the rotating seat to rotate, so that the horizontal detection device 3 can detect the product placed on the rotating positioning seat 72 from all directions, and then the transplanting and unloading device 6 removes the product from the positioning fixture 7 after detection and places it on the unloading table 9. This process is repeated, thereby realizing accurate and comprehensive automatic detection of the product.

[0073] Compared with the prior art, the advantages of the present invention are as follows: compact and stable structure, simple and convenient operation, low labor intensity, and effective saving of manpower, material resources and time. The circulating conveying device 1 adopts an upper and lower arrangement to circulate and convey the positioning fixture 7. There is no need to replace the positioning fixture 7, so the space is more fully utilized and the footprint of the equipment is reduced. The lifting drive device 4 can release the locking block 73 from locking the rotating positioning seat 72 and drive the rotating positioning seat 72 to rotate through lifting. The locking block 73 can also automatically reset to re-lock the rotating positioning seat 72, which is convenient for the horizontal detection device 3 to accurately and comprehensively detect the product from all directions, so that the stains, scratches, copper leakage, bruises, surface whitening, darkening and other defects on the front and back of the product can be accurately and comprehensively automatically detected. The detection accuracy is high, and it is not easy to produce false detection, missed detection, etc., thereby improving the overall quality and yield of the product, with high production efficiency and high output, and facilitating production control and automated online production of products to meet production needs. It is suitable for appearance detection of electronic products such as mobile phones, digital cameras, laptops, tablet computers, Bluetooth headsets, etc., with a wide range of applications, reducing production costs and enhancing product competitiveness.

[0074] The above are only some embodiments of the present disclosure, which are only used to illustrate the technical solution of the present disclosure, rather than to limit it. It should be understood that, for those skilled in the art, without departing from the creative concept of the present disclosure, it is possible to make improvements or substitutions according to the above description, and all these improvements and substitutions should fall within the scope of protection of the claims attached to the present disclosure. In this case, all details can be replaced by equivalent elements, and the materials, shapes and sizes can also be arbitrary.

Claims

1. Automatic optical appearance inspection machine, characterized in that, The invention comprises at least two circulating conveying devices (1) arranged side by side, an upper detection device (2) and a horizontal detection device (3) respectively corresponding to the two circulating conveying devices (1), a lifting drive device (4) corresponding to the horizontal detection device (3), a flipping device (5) and a transplanting and unloading device (6) cooperating with the two circulating conveying devices (1), wherein the circulating conveying devices (1) are capable of circulating a positioning jig (7) for positioning and placing products, the flipping device (5) is capable of flipping a product on the positioning jig (7) transported by one circulating conveying device (1) and transferring it to the positioning jig (7) transported by another circulating conveying device (1), and the lifting drive device (4) is capable of cooperating with the positioning jig (7) transported above it by lifting to drive the positioning jig (7) to rotate; The positioning fixture (7) comprises a fixture plate (71), the fixture plate (71) is provided with a rotational positioning seat (72) for positioning and placing a product and a locking block (73) elastically matched with the rotational positioning seat (72), the rotational positioning seat (72) is provided with a locking groove (721) matched with the locking block (73), and the lifting drive device (4) is capable of pushing the locking block (73) to move so as to release the locking of the rotational positioning seat (72) by the locking block (73) and drive the rotational positioning seat (72) to rotate after being unlocked; The lifting drive device (4) comprises a first driving mechanism (42) and a first push rod (43) driven by a first lifting mechanism (41); the output shaft of the first driving mechanism (42) faces upward and is coaxially connected to a first joint (44) that can be connected to the rotation positioning seat (72); as the first lifting mechanism (41) pushes the first driving mechanism (42) and the first push rod (43) to move upward, the first push rod (43) can push the locking block (73) to move so as to release the locking of the rotation positioning seat (72) by the locking block (73); and the first joint (44) can be connected to the rotation positioning seat (72) to drive the rotation positioning seat (72) to rotate; A first inclined surface (431) is disposed at the top of the first push rod (43), and a first through hole (732) matching with the first inclined surface (431) is disposed on the locking block (73) in the vertical direction; as the first lifting mechanism (41) pushes the first push rod (43) to move upward, the first inclined surface (431) can push the locking block (73) to move horizontally to release the locking block (73) from locking the rotating positioning seat (72); The circulating conveying device (1) comprises two horizontal conveying frames (11) arranged vertically and lifting conveying assemblies (12) respectively arranged at both ends of the two horizontal conveying frames (11); the horizontal conveying frames (11) are provided with a first conveying track (13) for horizontally moving the positioning jig (7), a first driving assembly (15) for driving the positioning jig (7) to move along the first conveying track (13) and a first positioning assembly (14) for cooperating with the positioning jig (7); the first driving assembly (15) is capable of pushing the positioning jig (7) positioned by the first positioning assembly (14) along the first conveying track (13) to the lifting conveying assembly (12) at one end, and is capable of pushing the positioning jig (7) on the lifting conveying assembly (12) at the other end to the first conveying track (13) and positioning it by the first positioning assembly (14); the lifting conveying assembly (12) is capable of driving the positioning jig (7) thereon to move up and down to correspond to the two horizontal conveying frames (11); The lifting and conveying assembly (12) comprises a first support (121) and a fourth lifting mechanism (122) for driving the first support (121) to move up and down, and the first support (121) is provided with a second conveying track (123) and a positioning baffle (124) for cooperating with the positioning fixture (7); The first positioning assembly (14) comprises a second bracket (54), the second bracket (54) being provided with a first positioning block (142) capable of elastically positioning the positioning fixture (7), and the first driving assembly (15) being capable of releasing the positioning of the positioning fixture (7) by the first positioning block (142) to push the positioning fixture (7) to move along the first conveying track (13); The first driving component (15) comprises a pushing plate (151) and a fourth driving mechanism (152) for driving the pushing plate (151) to push the positioning fixture (7) to move along the first conveying track (13); The locking block (73) is provided with a first protrusion (731) that matches the locking groove (721); the first protrusion (731) is inserted into the locking groove (721) so that the locking block (73) locks the rotation positioning seat (72); The rotating positioning seat (72) is provided with a first positioning column (722) for positioning and placing the product; The jig plate (71) is provided with a first elastic member (74) elastically connected to the locking block (73); the jig plate (71) and the locking block (73) are respectively provided with a first connecting column (75) connected to the first spring (741); the jig plate (71) is provided with a fourth linear slide rail (711) that cooperates with the movement of the locking block (73); the track of the fourth linear slide rail (711) is fixed on the jig plate (71); the locking block (73) is connected to the slider of the fourth linear slide rail (711); and the fourth linear slide rail (711) is arranged in the first groove body (712); The jig plate (71) is provided with a second avoidance hole (714) corresponding to the first through hole (732); a push rod or the like of the lifting drive device (4) passes through the second avoidance hole (714) and cooperates with the first through hole (732) to push the locking block (73) to move horizontally, so as to release the locking block (73) from locking the rotating positioning seat (72); A first connecting block (76) is provided at the bottom of the rotation positioning seat (72); a first connecting hole (761) connected to the first joint (44) is provided on the first connecting block (76); a first plug-in portion (762) matching with the first joint (44) is provided in the first connecting hole (761) along the vertical direction; a second plug-in portion (441) matching with the first plug-in portion (762) is provided on the first joint (44) along the vertical direction; a plurality of first plug-in portions (762) are evenly distributed along the circumferential direction of the first connecting hole (761); a plurality of second plug-in portions (441) are evenly distributed along the circumferential direction of the first joint (44); and a second groove body (713) matching with the first connecting block (76) is also provided on the fixture plate (71); The first joint (44) is located at the top of the output shaft of the first driving mechanism (42), and the first joint (44) is provided with a first flange (442) that matches the output shaft of the first driving mechanism (42); The first driving mechanism (42) and the first push rod (43) are mounted on a first mounting plate (46); the first mounting plate (46) is connected to the first lifting mechanism (41); the first lifting mechanism (41) pushes the first driving mechanism (42) and the first push rod (43) to move up and down through the first mounting plate (46); A first sensor (47) is disposed on the first mounting plate (46), a first sensing sheet (48) matching with the first sensor (47) is disposed on the output shaft of the first driving mechanism (42), and a first axial plane (422) matching with the first sensing sheet (48) is also disposed on the output shaft of the first driving mechanism (42); The first conveying track (13) is a first linear slide rail (131) arranged horizontally, the track of the first linear slide rail (131) is installed on the horizontal conveying frame (11), a groove body matching the track of the first linear slide rail (131) is arranged on the horizontal conveying frame (11), the positioning fixture (7) is connected to the slider of the first linear slide rail (131), and a groove body matching the slider of the first linear slide rail (131) is arranged on the positioning fixture (7); The fourth lifting mechanism (122) is mounted on a fourth bracket (125), and the fourth bracket (125) is provided with a linear slide rail that cooperates with the first bracket (121) to move up and down; The second conveying track (123) is a second linear slide rail (1231) arranged horizontally, and a groove body matching the second linear slide rail (1231) is arranged on the first support (121); The first support (121) is provided with a first avoidance hole (1211) that matches the first driving assembly (15); The fifth bracket (141) is provided with a first positioning block (142) capable of elastically positioning the positioning fixture (7); the fifth bracket (141) is provided with a second elastic member (143) elastically connected to the first positioning block (142); the first positioning block (142) and the fifth bracket (141) are respectively provided with a second connecting column (145) connected to the second elastic member (143); The first positioning block (142) is provided with a positioning head (144) for positioning the positioning fixture (7), the positioning fixture (7) is provided with a first positioning plate (77), and the first positioning plate (77) is provided with a first positioning groove (771) that matches the positioning head 144; The fifth bracket (141) is also provided with a third linear slide rail (146) that is movably matched with the first positioning block (142), and the first positioning block (142) is connected to a slider of the third linear slide rail (146); The first driving assembly (15) comprises a pushing plate (151) and a fourth driving mechanism (152) for driving the pushing plate (151) to push the positioning fixture (7) to move along the first conveying track (13); the pushing plate (151) is provided with a unidirectional pushing mechanism (153) for unidirectionally pushing the positioning fixture (7) to move; The one-way pushing mechanism (153) comprises a first mounting seat (1531), the first mounting seat (1531) is mounted on the pushing plate (151), the first mounting seat (1531) is hingedly connected with a pushing block (1532), a pushing portion (1534) is arranged on the pushing block (1532), a second inclined surface (1535) is formed on the back of the pushing portion (1534), and a third elastic member (1533) matched with the pushing block (1532) is also arranged on the first mounting seat (1531); The first mounting seat (1531) is provided with a first rotating shaft (1536) hinged to the pushing block (1532) and a third groove body (537) rotatably matched with the pushing block (1532); the first rotating shaft (1536) is arranged horizontally; the third elastic member (1533) is arranged below one end of the pushing block (1532) close to the pushing portion (1534); two ends of the third elastic member (1533) are respectively matched with the first mounting seat (1531) and the pushing block (1532); the first mounting seat (1531) and the pushing block (1532) are provided with groove bodies matched with two ends of the third elastic member (1533); The bottom of both ends of the jig plate (71) along its conveying direction are respectively provided with collision blocks (78) that cooperate with the push block (1532), and the end surfaces of the two collision blocks (78) facing each other are also provided with third inclined surfaces (781). When the push block (1532) moves in the opposite direction through the collision block (78) and the jig plate (71), the second inclined surface (1535) cooperates with the third inclined surface (781) to enable the push block (1532) to swing downward more smoothly, and also to reduce or eliminate contact between the push block (1532) and the jig plate (71).

2. The automatic optical appearance inspection machine according to claim 1, characterized in that: The turning device (5) comprises a rotating material clamping mechanism (51), a second lifting mechanism (52) for driving the rotating material clamping mechanism (51) to move up and down, and a second driving mechanism (53) for driving the second lifting mechanism (52) to move horizontally.

3. The automatic optical appearance inspection machine according to claim 1, characterized in that: The transplanting and unloading device (6) comprises a vacuum suction cup (61), a third lifting mechanism (62) for driving the vacuum suction cup (61) to move up and down, and a third driving mechanism (63) for driving the third lifting mechanism (62) to move horizontally.

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