A device for detecting external defects of a polycrystalline diamond compact

Abstract

The application discloses a kind of for polycrystalline diamond large piece appearance defect detection device, comprising: rack, which is fixedly provided with feeding unit, arch appearance detection unit being arranged at the side of feeding unit, thickness appearance detection unit being arranged at the side of arch appearance detection unit, appearance defect detection unit being oppositely arranged with arch appearance detection unit and discharging unit being arranged at the side of appearance defect detection unit, appearance defect detection unit includes visual inspection component and detection line body being arranged at the side of visual inspection component, visual inspection component includes welding frame, Z-axis screw module being fixed on welding frame, Z-axis motor being fixedly arranged on Z-axis screw module and camera lens being movably connected on Z-axis screw module by camera fixing plate.According to the application, different specifications and sizes of products can be detected, and the materials can be accurately placed on the detection platform, which greatly reduces the labor intensity, reduces the cost and improves the detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of image detection and processing, and in particular to a device for detecting appearance defects in large polycrystalline diamond sheets. Background Technology

[0002] In the polycrystalline diamond (PCD) industry, polycrystalline diamond (PCD) (micron powder) is produced from graphite using a unique directional blasting method. The shock wave from the directional blasting of high-velocity explosives accelerates metal fragments, causing them to collide with graphite flakes and transform the graphite into polycrystalline diamond. It possesses advantages such as high hardness, high wear resistance, high thermal conductivity, low coefficient of friction, low coefficient of thermal expansion, and low affinity with non-ferrous metals and non-metallic materials. It is widely used in the processing of non-ferrous metals and their alloys, such as copper, aluminum, and aluminum alloys, as well as non-metallic materials such as wood, reinforced flooring, ceramics, plastics, and rubber. It can also be used to manufacture wear-resistant materials for measuring instruments, guiding or supporting tools. One type of polycrystalline diamond sheet has the following dimensions: Diameter (mm): 51.0, 58.1, 59.6, 62.1, 75.0; Thickness (mm): 0.8, 1.0, 1.2, 1.6, 2.0, 2.2, 2.5, 3.4, 4.0, 5.0.

[0003] Currently, appearance defects (such as dot-like, linear, and crack-like flaws) in large polycrystalline diamond sheets are inspected manually. The disadvantages of manual inspection include: high labor intensity for workers; eye strain and discomfort from prolonged observation, making it difficult for inspectors to work continuously for extended periods; some flaws are very small and cannot be accurately judged by the human eye, increasing the chance of errors and compromising inspection quality; and the large quantity (>20,000 / day) and variety of sheets result in slow inspection speed, low efficiency, and low production capacity, necessitating an increase in the number of inspectors and high labor costs to maintain production capacity. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a detection device for appearance defects in large polycrystalline diamond sheets, meeting the inspection needs of products of different sizes and specifications. Furthermore, it allows for accurate placement of materials on the inspection platform, significantly reducing manual labor intensity, lowering costs, and improving inspection efficiency. To achieve the above-mentioned objectives and other advantages of the present invention, a detection device for appearance defects in large polycrystalline diamond sheets is provided, comprising:

[0005] The frame is fixedly equipped with a feeding unit, an camber appearance inspection unit located on one side of the feeding unit, a thickness appearance inspection unit located on one side of the camber appearance inspection unit, an appearance defect inspection sheet located opposite to the camber appearance inspection unit, and a feeding unit located on one side of the appearance defect inspection sheet.

[0006] The loading unit includes a CCD vision system fixed on the frame, a loading / unloading robot set on one side of the vision system, and a loading component set on one side of the loading / unloading robot.

[0007] The appearance defect inspection form includes a vision inspection component and an inspection line set on one side of the vision inspection component. The vision inspection component includes a welding frame, a Z-axis lead screw module fixed on the welding frame, a Z-axis motor fixed on the Z-axis lead screw module, and a camera lens movably connected to the Z-axis lead screw module through a camera mounting plate. A light source mounting plate is movably connected to the lower part of the welding frame through a manual slide table. A light source is fixed on the light source mounting plate and the light source is located below the camera lens.

[0008] The testing line includes a lead screw module, a rotary cylinder movably mounted on the lead screw module, a fixed plate fixedly mounted on the rotary cylinder, a testing platform fixedly mounted on the fixed plate, and a backlight source mounted inside the fixed plate. A first motor is fixedly connected to one end of the lead screw module, and a drag chain is provided on the side of the lead screw module opposite to the first motor.

[0009] Preferably, the feeding assembly includes a first lead screw module, a drawer shelf movably disposed on the first lead screw module, and a feeding tray placed on the drawer shelf.

[0010] Preferably, the CCD vision system includes a surface light source fixing assembly fixed on a frame, a support assembly fixed on the surface light source fixing assembly, a first camera lens fixed on the support assembly, and a surface light source fixed on the surface light source fixing assembly.

[0011] Preferably, the loading and unloading robot includes a robot mounting and welding frame fixed on a frame, a robot body fixed on the robot mounting and welding frame, and a product adsorption component disposed on the robot body.

[0012] Preferably, the product adsorption assembly includes a clamping block, a transition plate fixedly disposed below the clamping block, and a suction nozzle fixedly disposed below the transition plate.

[0013] Compared with the prior art, the beneficial effects of this invention are:

[0014] (1) Due to the varying sizes of incoming materials, robots and CCD vision systems are used to ensure that materials can be accurately placed on the inspection platform.

[0015] (2) In the design of this invention, each workstation can meet the testing of products of different sizes and specifications, and can achieve high production capacity. Attached Figure Description

[0016] Figure 1 A top view of the apparatus for detecting surface defects in large polycrystalline diamond sheets according to the present invention;

[0017] Figure 2 A three-dimensional structural schematic diagram of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention;

[0018] Figure 3 A top view of the mechanical structure of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention;

[0019] Figure 4 This is a schematic diagram of the feeding unit of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention;

[0020] Figure 5 This is a schematic diagram of the CCD vision system and the feeding assembly of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention.

[0021] Figure 6 This is a schematic diagram of the arch appearance detection unit of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention;

[0022] Figure 7 This is a schematic diagram of the thickness and appearance inspection unit of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention.

[0023] Figure 8 This is a schematic diagram of the thickness visual inspection component of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention.

[0024] Figure 9 This is a schematic diagram of the appearance defect detection unit of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention;

[0025] Figure 10 This is a schematic diagram of the appearance defect visual inspection component of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention.

[0026] Figure 11 This is a schematic diagram of the feeding unit of the device for detecting appearance defects in large polycrystalline diamond sheets according to the present invention. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Reference Figures 1-11A device for detecting appearance defects in large polycrystalline diamond sheets includes: a frame 600, on which a feeding unit 100, an camber appearance detection unit 200 disposed on one side of the feeding unit 100, a thickness appearance detection unit 300 disposed on one side of the camber appearance detection unit 200, an appearance defect detection sheet 400 disposed opposite to the camber appearance detection unit 200, and a unloading unit 500 disposed on one side of the appearance defect detection sheet 400 are fixedly mounted; the feeding unit 100 includes a CCD vision system 110 fixed to the frame 600, an unloading robot 120 disposed on one side of the CCD vision system 110, and a feeding assembly 130 disposed on one side of the unloading robot 120; during the detection process, the operator places the large polycrystalline diamond sheet into the feeding assembly 130, the CCD vision system 110 takes a picture of the product in the feeding tray 131, obtains the product position and outline information, and transmits it to the unloading robot 120, the unloading robot 120... 20. Precise material is picked up and placed on the camber detection platform of the camber appearance inspection unit 200. The camber detection vision system of the camber appearance inspection unit 200 takes pictures of the product. After the camber detection is completed, the thickness detection rotating structure of the thickness appearance inspection unit 300 transports the product to the thickness detection platform. The thickness detection vision system of the thickness appearance inspection unit 300 takes pictures of the product at the first position. After the first position detection is completed, the thickness detection rotating structure takes the product, rotates it 45 degrees, and places it on the thickness detection platform. The thickness detection vision system takes pictures of the product at the second position. This action is repeated 3 times. After the thickness detection is completed, the transfer robot of the appearance defect inspection sheet 400 picks up the product and places it on the appearance defect inspection platform. The appearance defect inspection vision system takes pictures of the product at 0 degrees and 90 degrees to complete the appearance defect inspection. At the same time, the algorithm judges the thickness and camber images according to the inspection content and inspection standards. The loading and unloading robot picks up the product and places it in the unloading assembly for unloading.

[0029] The camber appearance inspection unit 200 includes a second vision inspection component 310, a rotating mechanism 320, and a transfer robot 330. The second vision inspection component 310 includes a laser detector 311, a sensor fixing plate 312, a column 313, a fixture bracket 314, a fixture base plate 315, and a first drag chain 316. The product is transferred to the fixture by the loading / unloading robot. The fixture consists of a fixture mounting plate and a lowered, fixed lead screw module forming a motion system. When the product is on the fixture, the lead screw module moves through the camber inspection unit located on one side of the fixture, and the 3D camera above quickly takes pictures and records the shape of the product. Then the fixture platform continues to move, stopping after passing through the thickness detection rotating structure located on one side of the camber inspection unit. The thickness rotating mechanism fixes the product to the mechanism by adsorbing it. At this time, the fixture platform retracts, and the platform composed of the bracket moves to below the thickness detection rotating structure via the lead screw module, placing the product on the bracket platform. The bracket platform retracts to the thickness appearance inspection unit to complete one thickness inspection. The thickness detection vision system takes a picture of the product at the first position. After the first position detection is completed, the bracket platform retracts to the bottom of the thickness detection rotating structure. The thickness detection rotating structure rotates the product 45 degrees and places it on the bracket platform. The bracket platform then moves to the thickness appearance detection unit again, and the thickness detection vision system takes a picture of the product at the second position. This action is repeated 3 times to complete the process.

[0030] The rotating mechanism 320 includes a third lead screw module 321, a fourth motor 322, a base plate 323, a rotary motor 324, a suction nozzle 167, a column profile 325, and a base 326;

[0031] The transfer robot 330 consists of a Y-axis lead screw module 331, a Y-axis motor 332, a fourth cable chain 333, a Z-axis lead screw module 334, a Z-axis motor 335, a suction nozzle 167, and an aluminum profile column 336. The Y-axis lead screw module 331 and the Y-axis motor 332 enable the product to move left and right, while the rotary motor 324 enables the product to rotate 360 ​​degrees. After the product thickness is measured, the transfer robot, driven by the Y-axis lead screw module, moves the Z-axis to the support platform. At this point, the Z-axis module's movement picks up the product through the suction nozzle, fixing it to the nozzle. The Y-axis lead screw module then retracts to the starting point, and the Z-axis module's movement places the product onto the rotary fixture platform.

[0032] The unloading unit 500 includes a fifth lead screw module 501, a fifth motor 502, a gripper 503, a cylinder 504, a fifth cable chain 505, a conveying arm 506, a linear guide rail 507, a profile crossbeam 508, and a first profile column 509. The product on the rotating fixture platform moves to a position directly below the appearance defect detection unit via the lead screw module, where the appearance defect detection system takes photos and records the information. After recording, the rotating platform rotates 90 degrees via the rotary cylinder, and the appearance defect detection system continues to take photos and record information, completing the appearance defect detection.

[0033] The appearance defect inspection form 400 includes a vision inspection component 410 and an inspection line 420 disposed on one side of the vision inspection component 410. The vision inspection component 410 includes a welding frame 411, a Z-axis lead screw module 412 fixed on the welding frame 411, a Z-axis motor 413 fixed on the Z-axis lead screw module 412, and a camera lens 414 movably connected to the Z-axis lead screw module 412 via a camera mounting plate 415. A light source mounting plate 417 is movably connected to the lower part of the welding frame 411 via a manual slide 418. A light source 416 is fixed on the light source mounting plate 417 and is located below the camera lens 414. The appearance inspection unit is fixed as a whole by the welding frame. The camera is fixed to the Z-axis lead screw module and can be adjusted in height according to different products. The fixed light source below the camera provides the best shooting environment when the camera is working, making it easier to record the shape of the product and further improving the accuracy of the inspection.

[0034] The testing line 420 includes a lead screw module 421, a rotary cylinder 426 movably mounted on the lead screw module 421, a fixing plate 425 fixedly mounted on the rotary cylinder 426, a testing platform 424 fixedly mounted on the fixing plate 425, and a backlight 427 disposed inside the fixing plate 425. One end of the lead screw module 421 is fixedly connected to a first motor 422, and a drag chain 423 is disposed on the side of the lead screw module 421 opposite to the first motor 422.

[0035] Furthermore, the feeding assembly 130 includes a first lead screw module 132, a drawer shelf 134 movably disposed on the first lead screw module 132, and a feeding tray 131 placed on the drawer shelf 134. During operation, the operator places the product in the feeding tray 131, pushes the product to the horizontal feeding position through the drawer shelf 134, and then raises and lowers the product to the feeding reference position through the first lead screw module 132 and the third motor 133.

[0036] Furthermore, the CCD vision system 110 includes a surface light source fixing assembly 114 fixed on the frame 600, a bracket assembly 113 fixed on the surface light source fixing assembly 114, a first camera lens 111 fixed on the bracket assembly 113, and a surface light source 112 fixed on the surface light source fixing assembly 114.

[0037] Furthermore, the loading and unloading robot 120 includes a robot mounting and welding frame 123 fixed on the frame 600, a robot body 121 fixed on the robot mounting and welding frame 123, and a product adsorption component 122 disposed on the robot body 121. The product adsorption component 122 includes a clamping block 122-A, a transition plate 122-B fixedly disposed below the clamping block 122-A, and a suction nozzle 167 fixedly disposed below the transition plate 122-B. When moving the product, it is adsorbed by vacuum adsorption through the suction nozzle 167, and different sizes of products are compatible with one suction nozzle 167.

[0038] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention, and applications, modifications and variations thereof will be obvious to those skilled in the art.

[0039] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A device for detecting appearance defects in large polycrystalline diamond sheets, characterized in that, include: A frame (600) is fixedly provided with a feeding unit (100), an camber appearance inspection unit (200) disposed on one side of the feeding unit (100), a thickness appearance inspection unit (300) disposed on one side of the camber appearance inspection unit (200), an appearance defect inspection sheet (400) disposed opposite to the camber appearance inspection unit (200), and a unloading unit (500) disposed on one side of the appearance defect inspection sheet (400). The loading unit (100) includes a CCD vision system (110) fixed on the frame (600), a loading robot (120) set on one side of the CCD vision system (110), and a loading component (130) set on one side of the loading robot (120). The appearance defect inspection form (400) includes a vision inspection component (410) and an inspection line (420) set on one side of the vision inspection component (410). The vision inspection component (410) includes a welding frame (411), a Z-axis lead screw module (412) fixed on the welding frame (411), a Z-axis motor (413) fixed on the Z-axis lead screw module (412), and a camera lens (414) movably connected to the Z-axis lead screw module (412) via a camera mounting plate (415). A light source mounting plate (417) is movably connected to the lower part of the welding frame (411) via a manual slide (418). A light source (416) is fixed on the light source mounting plate (417), and the light source (416) is located below the camera lens (414). The detection line (420) includes a lead screw module (421), a rotary cylinder (426) movably mounted on the lead screw module (421), a fixed plate (425) fixedly mounted on the rotary cylinder (426), a detection platform (424) fixedly mounted on the fixed plate (425), and a backlight (427) mounted inside the fixed plate (425). One end of the lead screw module (421) is fixedly connected to a first motor (422), and a drag chain (423) is provided on the side of the lead screw module (421) opposite to the first motor (422).

2. The device for detecting appearance defects in large polycrystalline diamond sheets as described in claim 1, characterized in that, The feeding assembly (130) includes a first lead screw module (132), a drawer shelf (134) movably disposed on the first lead screw module (132), and a feeding tray (131) placed on the drawer shelf (134).

3. The device for detecting appearance defects in large polycrystalline diamond sheets as described in claim 1, characterized in that, The CCD vision system (110) includes a surface light source fixing assembly (114) fixed on a frame (600), a bracket assembly (113) fixed on the surface light source fixing assembly (114), a first camera lens (111) fixed on the bracket assembly (113), and a surface light source (112) fixed on the surface light source fixing assembly (114).

4. The device for detecting appearance defects in large polycrystalline diamond sheets as described in claim 2, characterized in that, The loading and unloading robot (120) includes a robot mounting and welding frame (123) fixed on the frame (600), a robot body (121) fixed on the robot mounting and welding frame (123), and a product adsorption component (122) disposed on the robot body (121).

5. The device for detecting appearance defects in large polycrystalline diamond sheets as described in claim 4, characterized in that, The product adsorption assembly (122) includes a clamping block (122-A), a transition plate (122-B) fixedly disposed below the clamping block (122-A), and a suction nozzle (167) fixedly disposed below the transition plate (122-B).

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