A CCD visual inspection equipment for graphite products

Abstract

The present invention relates to the field of CCD visual inspection technology, specifically to a CCD visual inspection device for graphite products, comprising a detection mechanism, a table distance adjustment mechanism arranged on the detection mechanism, a linkage mechanism arranged on the table distance adjustment mechanism, a lower light-shielding mechanism arranged on the table distance adjustment mechanism, and an upper light-shielding mechanism arranged on the detection mechanism. By arranging an upper light-shielding mechanism that can fall downward outside the existing visual detector, and arranging a lower light-shielding mechanism at the bottom of the platform on which the graphite product is placed, as the visual detector drives the upper light-shielding mechanism to fall at a uniform speed, the lower light-shielding mechanism will also rise at the same speed until the two sets of light-shielding mechanisms are completely closed, at which time the graphite product can be accurately detected by the visual detector in a completely light-shielding environment without interference from ambient light.

Description

Technical Field

[0001] The invention relates to the technical field of CCD visual inspection, in particular to a CCD visual inspection device for graphite products. Background Art

[0002] With the rapid development of modern industry, industrial visual inspection has become an efficient and accurate inspection solution. Therefore, CCD sensors, as a semiconductor device that converts optical signals into electrical signals, are widely used in various visual inspection systems.

[0003] However, the current CCD visual inspection system still has certain defects in actual use. When the device is installed in different factories, there are differences in the intensity of high light in different factories. When the target object is placed directly above or below the industrial camera, the light in the factory will interfere with the target object. Unlike other objects, graphite products are pure black. When ambient light shines from the outside of the graphite product, the industrial camera's capture of the graphite product surface image will be interfered by the ambient light, making it difficult to record the bumps or potholes on the product surface in real time.

[0004] In view of this, a CCD visual inspection equipment for graphite products was designed to solve the above problems. Summary of the invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0006] To this end, the technical solution adopted in the present invention is:

[0007] A CCD visual inspection device for graphite products, comprising a detection mechanism, a table distance adjusting mechanism arranged on the detection mechanism, a linkage mechanism arranged on the table distance adjusting mechanism, a lower light-shielding mechanism arranged on the table distance adjusting mechanism, and an upper light-shielding mechanism arranged on the detection mechanism, wherein the upper light-shielding mechanism is located directly above the lower light-shielding mechanism; the detection mechanism comprises a visual detector for recording downward; the table distance adjusting mechanism is used to provide a stable bearing platform for the lower light-shielding mechanism; the lower light-shielding mechanism comprises a storage table located directly below the visual detector and four lower corner plates; the upper light-shielding mechanism comprises a top seat arranged outside the visual detector and four upper blades installed outside the top seat and evenly distributed; the four lower corner plates and the four upper blades are used to wrap the four end faces of the storage table.

[0008] In a preferred example, the present invention can be further configured as follows: a load-bearing column is installed on the end tube at the bottom of the storage table, and a base is arranged outside the load-bearing column;

[0009] A through hole is provided inside the load-bearing column, and an air pipe is connected to the threaded port at the bottom end of the load-bearing column;

[0010] The top surface of the storage table is provided with air holes, and the interior of the storage table is provided with holes, which are communicated with the through holes.

[0011] In a preferred example, the present invention can be further configured as follows: the table distance adjustment mechanism includes a workpiece limiting assembly;

[0012] The workpiece limiting assembly includes a cushion, an external protective frame installed on the cushion, and a second locking bolt connected to the inside of the cushion;

[0013] A built-in protective frame is installed on the outside of the storage table;

[0014] The inner wall of the storage table and the outer wall of the external protective frame are coated with a light-absorbing coating;

[0015] The gap between the external protective frame and the internal protective frame is used to constrain the four lower corner plates and the four upper blade plates and increase the sealing performance in the closed environment.

[0016] In a preferred example, the present invention can be further configured as follows: the detection mechanism also includes a hydraulic rod and a machine base arranged on the top of the hydraulic rod, the visual detector is installed in the machine base, and the visual detector in a suspended state is located directly above the storage table, for accurately recording the graphite products placed on the top of the storage table.

[0017] In a preferred example, the present invention can be further configured as follows: the tabletop distance adjustment mechanism also includes a clamping seat arranged on the hydraulic rod, a first locking bolt connected to the outside of the clamping seat, two sheaths installed on the inside of the clamping seat, a crossbeam movably installed in the two sheaths, and a support rod installed in the column head at the outer end of the crossbeam;

[0018] The top end of the support rod is adapted to penetrate into the interior of the cushion, and the rod body at the top of the support rod is provided with evenly distributed insertion holes, and the second locking bolt is adapted to the evenly distributed insertion holes.

[0019] In a preferred example, the present invention can be further configured as follows: a slider is installed on the end of the crossbeam penetrating into the two sheath cavities, a hexagonal screw sleeve is arranged inside the slider, and a screw rod is arranged inside the hexagonal screw sleeve;

[0020] The I-shaped column head at the inner end of the screw rod is movably installed in the grooves of the two end plates at the bottom of the two sleeves, and a rotating wheel is installed at the outer end of the screw rod. The screw rod is used to calibrate the crossbeam and the workpiece limit assembly as a whole with the visual detector.

[0021] In a preferred example, the present invention can be further configured as follows: the linkage mechanism includes two clamps installed in the crossbeam, two mother pipes installed in the clamps, a first wire control clamp fixedly installed on one of the mother pipe ports, and a second wire control clamp installed on the other mother pipe port;

[0022] The first wire control clamp and the second wire control clamp are both provided with bearings inside, and shaft rollers are installed inside the two bearings.

[0023] In a preferred example, the present invention can be further configured as follows: torsion springs are connected to the column heads at both ends of the shaft roller, and the other end of the torsion spring is fixedly connected to the inner wall of the mother tube;

[0024] A wire retaining disc is installed in the middle of the shaft roller, and a second cable is wound around the shaft roller.

[0025] In a preferred example, the present invention can be further configured as follows: the threaded section at the bottom end of the load-bearing column is adapted to penetrate into the interior of the crossbeam and is locked by a nut;

[0026] A second spring is arranged at the bottom of the base, and the load-bearing column is adapted to penetrate into the second spring, and the bottom end of the second spring is connected to the crossbeam;

[0027] Two auxiliary pads are installed on both sides of the base, and the top end of the second cable is connected to the auxiliary pad.

[0028] In a preferred example, the present invention can be further configured as follows: the upper light shielding mechanism further includes two main pads mounted on both sides of the top seat and a first cable connected to the main pads;

[0029] The bottom end of the first cable is rolled up and wound around the shaft roller;

[0030] The four corners of the bottom of the top seat are provided with slots adapted to be snap-connected to the top of the lower corner plate.

[0031] By adopting the above technical solution, the beneficial effects achieved by the present invention are:

[0032] 1. The present invention arranges an upper light-shielding mechanism that can fall downward on the outside of the existing visual detector, and arranges a lower light-shielding mechanism at the bottom of the platform where the graphite product is placed. As the visual detector drives the upper light-shielding mechanism to descend at a uniform speed, the lower light-shielding mechanism will also rise at the same speed until the two sets of light-shielding mechanisms are completely closed. At this time, the graphite product can be accurately detected by the visual detector in a completely light-shielding environment without interference from ambient light.

[0033] 2. In the present invention, since the graphite products need to undergo hardness, density and X-ray flaw detection after surface defect detection, when the above-mentioned graphite products are placed in a completely light-proof environment, the airflow of the externally detected graphite products is transferred to a closed environment in sequence. At this time, the stored graphite products can be tested for these factors under the continuous photography of the above-mentioned visual detector.

[0034] 3. The present invention opens pores on the surface of a traditional platform for storing target objects and opens holes inside the platform. When the graphite product is completely in a closed environment, the heat energy generated by direct light can be dissipated outward through the pores and holes of the platform, thereby reducing the problem of direct light continuing to heat up in a closed environment and causing certain damage to the target product. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the present invention when used;

[0036] Figure 2 It is a schematic diagram of the detection mechanism of the present invention;

[0037] Figure 3 It is a schematic diagram of the table distance adjustment mechanism of the present invention;

[0038] Figure 4 is a schematic diagram of the light-shielding mechanism of the present invention;

[0039] Figure 5 It is a schematic top view of a part of the present invention;

[0040] Figure 6 is a schematic diagram of the light-shielding mechanism of the present invention;

[0041] Figure 7 For the present invention Figure 6 The enlarged schematic diagram of point A in the middle;

[0042] Figure 8 For the present invention Figure 6 The enlarged schematic diagram of point B in the middle;

[0043] Fig. 9 It is a schematic diagram of the linkage mechanism of the present invention.

[0044] Reference numerals:

[0045] 100, detection mechanism; 110, hydraulic rod; 120, machine base; 130, visual detector;

[0046] 200, table distance adjustment mechanism; 210, clamping seat; 220, first locking bolt; 230, sheath; 240, screw rod; 250, first spring; 260, crossbeam; 270, slider; 280, support rod; 290, workpiece limit assembly; 291, cushion; 292, external guard frame; 293, second locking bolt;

[0047] 300, linkage mechanism; 310, clamp; 320, mother tube; 330, first wire control clamp; 340, second wire control clamp; 350, bearing; 360, shaft roller; 370, wire stopper; 380, torsion spring; 390, second cable;

[0048] 400, lower light-shielding mechanism; 410, load-bearing column; 420, storage table; 430, built-in protective frame; 440, base; 450, lower corner plate; 460, second spring; 470, air pipe; 480, auxiliary pad;

[0049] 500, upper light-shielding mechanism; 510, top seat; 520, slot; 530, main pad; 540, first cable; 550, upper blade. DETAILED DESCRIPTION

[0050] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0051] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0052] A CCD visual inspection device for graphite products provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0053] Embodiment 1:

[0054] Combination Figure 1-Figure 9 As shown, a CCD visual inspection device for graphite products provided by the present invention includes a detection mechanism 100, a table distance adjusting mechanism 200 arranged on the detection mechanism 100, a linkage mechanism 300 arranged on the table distance adjusting mechanism 200, a lower light shielding mechanism 400 arranged on the table distance adjusting mechanism 200, and an upper light shielding mechanism 500 arranged on the detection mechanism 100, and the upper light shielding mechanism 500 is located directly above the lower light shielding mechanism 400, the table distance adjusting mechanism 200 is used to control the accuracy between the platform and the camera, and the lower light shielding mechanism 400 and the upper light shielding mechanism 500 are used to completely close the platform.

[0055] The detection mechanism 100 includes a hydraulic rod 110, a visual detector 130 for recording downward, and a base 120 disposed on the top of the hydraulic rod 110, wherein the visual detector 130 is installed in the base 120;

[0056] The table distance adjustment mechanism 200 is used to provide a stable bearing platform for the lower light shielding mechanism 400;

[0057] The lower light shielding mechanism 400 includes a storage table 420 located directly below the visual detector 130 and four lower corner plates 450;

[0058] The visual detector 130 in a suspended state is located directly above the storage table 420 and is used to accurately record the graphite product placed on the top of the storage table 420;

[0059] The upper light shielding mechanism 500 includes a top seat 510 disposed outside the visual detector 130 and four upper blades 550 installed outside the top seat 510 and evenly distributed;

[0060] The four lower corner panels 450 and the four upper blade panels 550 are used to wrap the four end surfaces of the storage platform 420 .

[0061] Due to certain defects in the actual use of current CCD visual inspection devices, when the gear lever takes targeted photographs and records target objects with good reflectivity, the ambient light has little interference with the above-mentioned objects. However, unlike other objects, the pure black graphite products are affected by the ambient light. The light projected by the visual detector will cause the video on the surface of the graphite objects to be blurred under the interference of the ambient light, which will cause the bumps and potholes on the surface of the graphite products to not be detected in time.

[0062] Therefore, the device sets an upper light-shielding mechanism 500 on the top of the storage table 420 and sets a lower light-shielding mechanism 400 on the bottom of the storage table 420. When the visual detector 130 is driven and approaches the graphite product stored on the top of the storage table 420, the top seat 510 set outside the visual detector 130 will carry the four upper blades 550 to insert into the gap between the external protective frame 292 and the internal protective frame 430. At the same time, the base 440 released at the same speed by the first cable 540 and the second cable 390 will also carry the four lower corner plates 450 to insert into the gap between the external protective frame 292 and the internal protective frame 430 until the four lower corner plates 450 and the four upper blades 550 are completely closed. At this time, the graphite product placed on the top of the storage table 420 can be accurately recorded by the light projected by the visual detector 130 in a closed environment.

[0063] After the above-mentioned graphite products are accurately tested under the premise of avoiding interference from ambient light, according to the requirements of the graphite product testing, after exhausting air to the outside through the air pipe 470 or inputting test gas into the closed environment through the air pipe 470, the graphite products in the closed environment can be continuously tested for quality.

[0064] Embodiment 2:

[0065] Combination Figure 2-Figure 6 As shown, on the basis of Example 1, the table distance adjustment mechanism 200 also includes a clamping seat 210 arranged on the hydraulic rod 110, a first locking bolt 220 connected to the outside of the clamping seat 210, two sleeves 230 installed on the inside of the clamping seat 210, a beam 260 movably installed in the two sleeves 230, and a support rod 280 installed in the column head at the outer end of the beam 260.

[0066] Preferably, the clamp seat 210 installed on the hydraulic rod 110 can provide a stable pressure-bearing platform for the two sleeves 230. When the beam 260 is movably installed in the inner cavity of the two sleeves 230, the beam 260 in a horizontal and suspended state can cooperate with the support rod 280 to provide a support platform for the workpiece limiting assembly 290 as a whole. At this time, the workpiece limiting assembly 290 as a whole can cooperate with the built-in protective frame 430 to press the lower corner plate 450 and the upper blade plate 550 to improve the sealing of the closed environment.

[0067] A slider 270 is installed on the end of the cross beam 260 that passes through the inner cavity of the two sheaths 230. A hexagonal screw sleeve is arranged inside the slider 270, and a screw rod 240 is arranged inside the hexagonal screw sleeve.

[0068] The I-shaped column head at the inner end of the screw rod 240 is movably installed in the grooves of the two end plates at the bottom of the two sleeves 230, and a rotating wheel is installed at the outer end of the screw rod 240. The screw rod 240 is used to calibrate the beam 260 and the workpiece limit assembly 290 as a whole with the visual detector 130.

[0069] Preferably, by controlling the rotation of the rotating wheel, the screw rod 240 constrained by the two sheaths 230 can push the slider 270 and the beam 260 as a whole. At this time, the workpiece stop assembly 290 as a whole and the storage table 420 can be fine-tuned with the visual detector 130 to ensure that the light projected downward by the visual detector 130 can completely irradiate the surface of the graphite product;

[0070] Preferably, the first spring 250 is arranged in the inner cavity of the two sheaths 230, and at this time, one end of the first spring 250 is pressed on the inner wall of the two sheaths 230, and the other end of the first spring 250 is pressed on the beam 260, which is used to provide effective reset kinetic energy for the contracted beam 260.

[0071] Embodiment 3:

[0072] Combination Figure 3-Figure 9 As shown, based on the embodiment 1, the table distance adjustment mechanism 200 includes a workpiece limiting assembly 290;

[0073] The workpiece limiting assembly 290 includes a cushion 291, an external protection frame 292 installed on the cushion 291, and a second locking bolt 293 connected to the inside of the cushion 291;

[0074] The exterior of the storage table 420 is provided with a built-in protective frame 430;

[0075] The inner wall of the storage platform 420 and the outer wall of the external protective frame 292 are coated with a light absorbing coating.

[0076] Preferably, the surfaces of the lower corner plates 450 and the upper blade plates 550 are coated with a light-shielding coating. When the four lower corner plates 450 are adapted and snap-fitted with the four upper blade plates 550, the four lower corner plates 450 and the four upper blade plates 550 forming a rectangular shell can cooperate with the base 440 and the top seat 510 to provide a sealed cavity for the storage table 420. At this time, reflections in the sealed cavity can be avoided, thereby reducing interference with graphite products.

[0077] The gap between the external guard frame 292 and the internal guard frame 430 is used to constrain the four lower corner panels 450 and the four upper blade panels 550 and increase the sealing performance in the closed environment;

[0078] The top end of the support rod 280 is adapted to penetrate into the interior of the cushion 291 , and the rod body at the top of the support rod 280 is provided with evenly distributed insertion holes, and the second locking bolts 293 are adapted to the evenly distributed insertion holes.

[0079] Preferably, the external protective frame 292 and the internal protective frame 430 are used to constrain the four lower corner panels 450 and the four upper blades 550 after closure. At this time, the air tightness of the graphite product located in the closed cavity can be improved during the continuity test. At the same time, the external protective frame 292 and the internal protective frame 430 distributed in a rectangular frame can also provide pressure protection for the lower corner panels 450 and the upper blades 550.

[0080] Embodiment 4:

[0081] Combination Figure 3 and Fig. 9 As shown, based on Example 1, the linkage mechanism 300 includes two clamps 310 installed in the beam 260, two mother tubes 320 installed in the clamps 310, a first control line clamp 330 fixedly installed on the port of one of the mother tubes 320, and a second control line clamp 340 installed on the port of the other mother tube 320.

[0082] Preferably, vertical holes are provided in the end plates at the top of the first wire control clamp 330 and the second wire control clamp 340, and the vertical hole in the first wire control clamp 330 is used to constrain the first cable 540, while the vertical hole in the second wire control clamp 340 is used to constrain the second cable 390, and the wire retaining plate 370 arranged in the middle of the shaft roller 360 is used to separate the first cable 540 and the second cable 390, and prevent the two cables from being entangled with each other.

[0083] The first control line clamp 330 and the second control line clamp 340 are both provided with bearings 350 inside, and shaft rollers 360 are installed inside the two bearings 350;

[0084] The column heads at both ends of the shaft roller 360 are connected to torsion springs 380, and the other end of the torsion spring 380 is fixedly connected to the inner wall of the mother tube 320;

[0085] A wire retaining disc 370 is installed in the middle of the shaft roller 360 , and a second cable 390 is wound around the shaft roller 360 .

[0086] Preferably, by fixing the two clamps 310 in the crossbeam 260, the four mother tubes 320 installed in the two clamps 310 can provide a stable pressure-bearing platform for the four torsion springs 380. Torque is accumulated in the four torsion springs 380 in the initial state. As the first cable 540 relaxes, the torsion spring 380 will cause the shaft roller 360 to rotate, thereby releasing the second cable 390.

[0087] Embodiment 5:

[0088] Combination Figure 2-Figure 9 As shown, in the above embodiment, the threaded section at the bottom end of the load-bearing column 410 is adapted to penetrate into the interior of the crossbeam 260 and is locked by a nut;

[0089] A second spring 460 is disposed at the bottom of the base 440, and the load-bearing column 410 is adapted to penetrate into the second spring 460, and the bottom end of the second spring 460 is connected to the crossbeam 260;

[0090] Two auxiliary pads 480 are installed on both sides of the base 440 , and the top end of the second cable 390 is connected to the auxiliary pad 480 .

[0091] Preferably, transverse grooves are provided on the four sides of the top of the base 440, and the transverse grooves are adapted to the bottom end of the upper blade 550, and a concave hole adapted to the bottom end tube of the storage table 420 is provided in the middle of the top surface of the base 440, wherein the base 440 and the top seat 510 are both made of stainless steel.

[0092] A load-bearing column 410 is installed on the end tube at the bottom of the storage platform 420;

[0093] A through hole is provided inside the load-bearing column 410, and an air pipe 470 is connected to the threaded port at the bottom end of the load-bearing column 410;

[0094] The top surface of the storage platform 420 is provided with air holes, and the interior of the storage platform 420 is provided with holes, which are communicated with the through holes.

[0095] Preferably, the air holes on the top of the storage table 420 are used to exhaust air to the outside and provide a window for the test airflow to flow toward the graphite product. When the air pipe 470 is connected to the bottom end of the load-bearing column 410, the graphite product in the closed environment can be protected from heat dissipation during direct exposure to light, and the test airflow selected for injection can be compared and tested under the same state.

[0096] The upper light shielding mechanism 500 further includes two main pads 530 mounted on both sides of the top seat 510 and a first cable 540 connected to the main pads 530;

[0097] The bottom end of the first cable 540 is rolled up and wound around the shaft roller 360;

[0098] The four corners of the bottom of the top seat 510 are provided with slots 520 adapted to be snap-fitted to the top of the lower corner plate 450 .

[0099] Preferably, the four slots 520 opened on the four corners of the bottom of the top seat 510 are used to provide airtight constraints for the top ends of the four lower corner panels 450, and the centrally arranged external protective frame 292 and internal protective frame 430 can provide anti-cracking protection for the four lower corner panels 450 and the four upper leaf plates 550.

[0100] The working principle and use process of the present invention: When the CCD visual inspection equipment is in use, it mainly uses an industrial camera to capture the image of the target object, and analyzes and processes the uploaded image through an image processing algorithm, and uses computer technology, image processing technology and other technologies to quickly detect the characteristics, size or position of the surface of the object in industrial production. However, the use of CCD visual inspection equipment today has certain limitations. When inspecting objects with good reflective surfaces of the target objects, the ambient light required for the detection of the target objects basically does not need to be controlled. However, unlike other objects, when the surface of graphite products is inspected, the graphite products are pure black throughout. When light is projected onto the surface of the graphite products, the ambient light enters from the side to illuminate the graphite products. The edges of the graphite products in the light-absorbing state are difficult to record defects such as bumps or pits on their surfaces into the industrial camera system in real time. At this time, defective graphite products are difficult to be quickly inspected.

[0101] The device is configured by arranging an independent and completely sealed lower light-shielding mechanism 400 and an upper light-shielding mechanism 500 directly below the industrial camera of the current CCD visual inspection equipment, that is, the visual detector 130. When the hydraulic sub-rod in the hydraulic rod 110 drives the visual detector 130 to descend toward the top of the storage table 420, the graphite product placed on the top of the storage table 420 can be illuminated and photographed by the visual detector 130 under the protection of the external protective frame 292 and the internal protective frame 430. At the same time, the top seat 510 arranged on the visual detector 130 will cooperate with the two main pads 530 to descend at the same speed, and the two first cables 540 respectively connected to the two main pads 530 will relax the two shaft rollers 360. At this time, the two shaft rollers 360 are subjected to the torsion of the four torsion springs 380. Flip outward, at this time, the two second cables 390 wound on the two shaft rollers 360 will relax at the same speed, and the base 440 and the four lower corner plates 450 pushed upward by the second spring 460 will be inserted into the gap between the external guard frame 292 and the internal guard frame 430, and as the four upper blades 550 descend, they will also be inserted into the gap between the external guard frame 292 and the internal guard frame 430, until the four lower corner plates 450 and the four upper blades 550 that are folded into a rectangular structure are completely closed, at this time, the light projected from the bottom end of the visual detector 130 can directly illuminate the surface of the graphite product stored on the top of the storage table 420, and the graphite product can obtain the best image recording in a completely light-proof state to avoid the interference of ambient light in the factory building on the light pollution of the pure black graphite product;

[0102] At the same time, after the above-mentioned completely light-proof state, by connecting the air pipe 470 with the external pipeline, when the air pipe 470 is connected to the exhaust pipeline, the above-mentioned completely light-proof environment is continuously exhausted to the outside, which can reduce the heat energy generated by light to cause certain safety hazards to graphite products;

[0103] When the air pipe 470 outputs the detection gas such as high humidity mist, the graphite product in the closed environment can be inspected on the surface and selectively inspected for the stability of its texture, and the detection airflow can be input according to the actual detection needs.

[0104] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A graphite product CCD visual inspection device, comprising a detection mechanism (100), characterized in that: It also comprises a tabletop distance adjustment mechanism (200) arranged on the detection mechanism (100), a linkage mechanism (300) arranged on the tabletop distance adjustment mechanism (200), a lower light-shielding mechanism (400) arranged on the tabletop distance adjustment mechanism (200), and an upper light-shielding mechanism (500) arranged on the detection mechanism (100), wherein the upper light-shielding mechanism (500) is located directly above the lower light-shielding mechanism (400); The detection mechanism (100) comprises a visual detector (130) for recording downwards; The table top distance adjustment mechanism (200) is used to provide a stable bearing platform for the lower light shielding mechanism (400); The lower light-shielding mechanism (400) comprises a storage platform (420) located directly below the visual detector (130) and four lower corner plates (450); the four lower corner plates (450) and the four upper blade plates (550) are used to wrap the four end surfaces of the storage platform (420); The upper light shielding mechanism (500) comprises a top seat (510) arranged outside the visual detector (130) and four upper blades (550) installed outside the top seat (510) and evenly distributed; The table distance adjustment mechanism (200) comprises a workpiece limiting assembly (290); The workpiece limiting assembly (290) comprises a cushion (291), an external protective frame (292) mounted on the cushion (291), and a second locking bolt (293) connected to the interior of the cushion (291); A built-in protective frame (430) is installed outside the storage platform (420); The inner wall of the storage platform (420) and the outer wall of the external protective frame (292) are both coated with a light absorbing coating; The gap between the external protective frame (292) and the internal protective frame (430) is used to constrain the four lower corner plates (450) and the four upper blade plates (550) and to increase the sealing performance in the closed environment.

2. The CCD visual inspection device for graphite products according to claim 1 is characterized in that: A load-bearing column (410) is installed on the end tube at the bottom of the storage platform (420), and a base (440) is arranged outside the load-bearing column (410); A through hole is provided inside the load-bearing column (410), and an air pipe (470) is connected to the threaded port at the bottom end of the load-bearing column (410); The top surface of the storage platform (420) is provided with air holes, and the interior of the storage platform (420) is provided with holes, and the holes are connected to the through holes.

3. The CCD visual inspection device for graphite products according to claim 1 is characterized in that: The detection mechanism (100) further comprises a hydraulic rod (110) and a machine base (120) arranged on the top of the hydraulic rod (110); the visual detector (130) is installed in the machine base (120), and the visual detector (130) in a suspended state is located directly above the storage table (420) and is used to accurately record the graphite product placed on the top of the storage table (420).

4. The CCD visual inspection device for graphite products according to claim 1, characterized in that: The tabletop distance adjustment mechanism (200) further comprises a clamping seat (210) arranged on the hydraulic rod (110), a first locking bolt (220) connected to the outside of the clamping seat (210), two protective sleeves (230) installed on the inside of the clamping seat (210), a crossbeam (260) movably installed in the two protective sleeves (230), and a support rod (280) installed in the column head at the outer end of the crossbeam (260); The top end of the support rod (280) is adapted to penetrate into the interior of the cushion (291), and the rod body at the top of the support rod (280) is provided with evenly distributed insertion holes, and the second locking bolts (293) are adapted to be fitted into the evenly distributed insertion holes.

5. The CCD visual inspection device for graphite products according to claim 4 is characterized in that: A slider (270) is installed on the end of the crossbeam (260) that passes through the inner cavities of the two sheaths (230), a hexagonal screw sleeve is arranged inside the slider (270), and a screw rod (240) is arranged inside the hexagonal screw sleeve; The I-shaped column head at the inner end of the screw rod (240) is movably mounted in the grooves of the two end plates at the bottom of the two sleeves (230), and a rotating wheel is mounted on the outer end of the screw rod (240). The screw rod (240) is used to calibrate the crossbeam (260) and the workpiece stop assembly (290) as a whole with the visual detector (130).

6. The CCD visual inspection device for graphite products according to claim 1, characterized in that: The linkage mechanism (300) comprises two clamps (310) installed in the crossbeam (260), two mother tubes (320) installed in the clamps (310), a first wire control clamp (330) fixedly installed on a port of one of the mother tubes (320), and a second wire control clamp (340) installed on a port of the other mother tube (320); The first wire control clamp (330) and the second wire control clamp (340) are both provided with bearings (350) inside, and shaft rollers (360) are installed inside the two bearings (350).

7. The CCD visual inspection device for graphite products according to claim 6, characterized in that: The column heads at both ends of the shaft roller (360) are connected to torsion springs (380), and the other end of the torsion spring (380) is fixedly connected to the inner wall of the mother tube (320); A wire retaining disc (370) is installed in the middle of the shaft roller (360), and a second cable (390) is wound around the shaft roller (360).

8. The CCD visual inspection device for graphite products according to claim 2 is characterized in that: The threaded section at the bottom end of the load-bearing column (410) is adapted to penetrate into the interior of the crossbeam (260) and is locked by a nut; A second spring (460) is disposed at the bottom of the base (440), and the load-bearing column (410) is adapted to penetrate into the second spring (460), and the bottom end of the second spring (460) is connected to the crossbeam (260); Two auxiliary pads (480) are installed on both sides of the base (440).

9. The CCD visual inspection device for graphite products according to claim 1, characterized in that: The upper light shielding mechanism (500) further comprises two main pads (530) mounted on both sides of the top seat (510) and a first pull cable (540) connected to the main pads (530); The bottom end of the first cable (540) is rolled up and wound around the shaft roller (360); Slots (520) adapted to be snap-fitted to the top of the lower corner plate (450) are provided at four corners of the bottom of the top seat (510).

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