A ceramic crucible appearance defect detection apparatus

Abstract

The application relates to the technical field of ceramic crucible detection, and discloses a ceramic crucible appearance defect detection equipment which comprises an annular support base and further comprises a driving motor arranged on the annular support base, a rotating base driven to rotate on the annular wall circumference of the annular support base, a plurality of moving detection assemblies arranged on the upper end of the rotating base and distributed at equal distances in a ring shape, the moving detection assemblies being synchronously moved towards and away from the center of the rotating base to detect the bottom of the placed ceramic crucible, a lifting mechanism vertically arranged on the annular support base and driving a moving ring arranged above the annular support base and at the same center to move up and down, and a plurality of pushers arranged at equal distances in a ring shape on the moving ring. The ceramic crucible appearance defect detection equipment realizes multi-point and full-range defect detection of the ceramic crucible, effectively improves the detection efficiency, and avoids the phenomenon that the detection cannot be performed on the shielding part.

Description

Technical Field

[0001] This invention relates to the field of ceramic crucible testing technology, specifically to a ceramic crucible appearance defect testing device. Background Technology

[0002] Ceramic crucibles are an important component of crucibles. Ceramic crucibles can be classified according to their raw materials, such as quartz crucibles, corundum crucibles, boron nitride crucibles, and zirconium oxide crucibles. After the ceramic crucible is fired, the crucible body needs to be inspected. The inspection indicators include the crucible height, outer diameter, and thickness. It is also necessary to check for chipping, cracks, bubbles, etc.

[0003] When inspecting surface defects such as cracks, bubbles, impurities, and ceramic chipping, the ceramic crucible is transported to the inspection platform, and the light source and industrial camera of the inspection mechanism are driven by a robotic arm to collect images of the inside and outside of the ceramic crucible. Existing detection technologies have the following technical defects: 1. When placing ceramic crucibles for testing, there are obstructions that prevent them from being detected; 2. The testing time is long and the efficiency is low when dealing with crucibles of different diameters. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a ceramic crucible appearance defect detection device, comprising an annular support base, and further comprising: A drive motor is mounted on the annular support base and drives the rotating seat to rotate circumferentially within the annular support base. Multiple moving detection components are arranged in a ring at equal distances on the upper end of the rotating seat, and move synchronously toward and away from the center of the rotating seat to detect the bottom of the placed ceramic crucible; The lifting mechanism is vertically mounted on the annular support base, driving the movable ring located above the annular support base and concentrically positioned to move up and down. Multiple pushing components are arranged in a ring at equal intervals on the moving ring, pushing multiple rollers on the roller seat to move closer to and further away from the center of the moving ring and to centrally clamp the ceramic crucible; An outer wall defect detection component is mounted on the roller seat to detect defects in the outer ring wall of the ceramic crucible. The top seat is mounted on the lifting mechanism and is positioned parallel to the moving ring above it. A rotating component is mounted on the top seat, which drives an electric push rod to rotate in a circle. The electric push rod is arranged with the same center as the moving ring. A column is installed at the push rod of the electric push rod; Multiple telescopic rods are arranged in a ring at equal intervals outside the column; A rotating inner wall defect detection component is located at the other end of the telescopic rod to detect the inner ring wall, top and bottom walls of the ceramic crucible. An adjustment component, located on the column, drives the rotating inner wall defect detection component to adjust its opening and closing. A movable tube, which slides inside the column and passes through to the lower end of the column; The second electric push rod is mounted on the column and pushes the suction cup connected to the moving tube to move, adsorbing the bottom wall of the ceramic crucible.

[0005] Optionally, it also includes a conveyor, a pair of perforations, an adjusting screw, an adjusting nut, a pair of guide frames, and multiple guide wheels; A conveyor, located outside the annular support, includes a conveyor belt; A pair of perforations are provided on opposite sides of the conveyor; A pair of guide frames, arranged in a Y-shape and placed on the surface of the conveyor belt, pass through the perforations respectively; An adjusting screw is mounted on the guide frame and passes through the conveyor, and an adjusting nut is threaded onto the outside of the adjusting screw.

[0006] Using the above technical solution, the ceramic crucible is conveyed by the conveyor belt on the conveyor to the Y-shaped opening between the guide frames and guided between the guide wheels, so that the crucible is conveyed to the rotating seat and enters the clamping range of the rollers. The setting of the adjusting screw and adjusting nut makes it easy to adjust the distance between the guide frames according to the outer diameter of the ceramic crucible, so that the guide wheels on both sides can effectively limit and guide the movement of the crucible.

[0007] Optionally, the moving detection component includes multiple mounting slots, a linear electric guide rail, a base, a light source, and an industrial camera. Multiple mounting slots are arranged in a ring at equal intervals on the upper surface of the rotating seat, and a linear electric guide rail is arranged in the mounting slot; A base is located at the guide slide of the linear electric guide rail, and both the light source and the industrial camera are located on the base.

[0008] Using the above technical solution, the linear electric guide rail in the mounting slot drives the base, light source and industrial camera to move synchronously, so as to realize the moving image acquisition of the bottom of the crucible.

[0009] Optionally, the lifting mechanism includes a support base, a linear electric guide rail, and multiple guide columns; A support base is vertically disposed on the outer ring wall of the annular support base, and a linear electric guide rail is vertically disposed on the surface of the support base; Multiple guide pillars are provided at the central opening of the support base; The movable ring is connected to the guide rail slide of the second linear electric guide rail and is passed through by the guide post.

[0010] Using the above technical solution, the linear electric guide rail on the support base drives the moving ring to move in a directional manner outside the guide column, which in turn drives the roller seat, roller and outer wall defect detection component to move synchronously, so as to realize the centered clamping and outer wall detection of the ceramic crucible.

[0011] Optionally, the pushing component is an electric push rod three, and the push rod of the electric push rod three is connected to the roller seat.

[0012] Using the above technical solution, the electric push rod achieves the movement of the roller seat through three working processes.

[0013] Optionally, the outer wall defect detection component includes a second light source and a second industrial camera; The second light source and the second industrial camera are both mounted on the roller base and located between the rollers.

[0014] Using the above technical solution, light source two and industrial camera two are used to acquire images of the outer wall of the ceramic crucible.

[0015] Optionally, the rotating assembly includes a rotating motor, a rotating groove, and a rotating disk; A rotary motor is located at the upper end of the top seat; A rotating groove is provided on the top seat for the rotating disk to rotate circumferentially; The output end of the rotary motor is connected to the center of the rotating disk, and an electric push rod is located at the center of the rotating disk.

[0016] Using the above technical solution, the rotary motor drives the rotating disk to rotate stably in the rotating groove, and synchronously drives the electric push rod to rotate.

[0017] Optionally, the rotating inner wall defect detection assembly includes multiple mounting frames, a micro motor, a base, a light source, and an industrial camera. Multiple mounting frames are provided at the other end of the telescopic rod, with an equal number of frames corresponding one-to-one. A micro motor is located on the outside of the mounting frame, and a base is located at the output end of the micro motor and inside the mounting frame; The third light source and the third industrial camera are both located on the surface of the second base.

[0018] Using the above technical solution, a micro motor on the mounting frame is used to adjust the rotation of the light source three and the industrial camera three on the base two, so that the light source three and the industrial camera three can capture images of the top, inner wall and bottom wall of the ceramic crucible.

[0019] Optionally, the adjustment assembly includes a movable base, a micro servo motor, a rotating shaft, a gear disk, a toothed groove, and multiple rotating rods; The movable seat is slidably sleeved on the outside of the column; A miniature servo motor is mounted on the surface of the movable base, with one end of the rotating shaft connected to the output end of the miniature servo motor and the other end connected to the movable base for rotation. A gear disk is concentrically located outside the rotating shaft, and tooth grooves are located on the surface of the column and mesh with the gear disk; Multiple rotating rods are respectively hinged between the movable seat and the telescopic rod.

[0020] Using the above technical solution, the micro servo motor drives the gear disk on the rotating shaft to rotate. By utilizing the meshing of the gear disk and the tooth groove, the moving seat moves up and down along the column. The movement of the moving seat drives the rotating rod to rotate, which in turn pushes the telescopic rod to extend and retract, thereby driving the rotating inner wall defect detection component to move and open.

[0021] Optionally, the surface of the rotating disk is equipped with a vacuum pump, and a flexible hose is connected between the air intake of the vacuum pump and the column. The hose has an external connection with an automatic vent valve.

[0022] Using the above technical solution, the vacuum pump operates, and by utilizing the interconnection between the vacuum pump, hose, column, moving tube and suction cup, the suction cup is able to adhere to the bottom wall of the ceramic crucible. The automatic exhaust valve is then opened to separate the ceramic crucible from the suction cup.

[0023] Compared with the prior art, the present invention provides a ceramic crucible appearance defect detection device, which has the following beneficial effects: This ceramic crucible appearance defect detection equipment works by placing the ceramic crucible to be inspected on a rotating seat, and the lifting mechanism drives the moving ring to move up and down to adjust so that the rollers on the roller seat are located on the outside of the ceramic crucible. In conjunction with the pushing component, the rollers move synchronously to clamp the ceramic crucible in the center of the rotating seat. The drive motor drives the placed ceramic crucible to rotate in a circle between the rollers. When the ceramic crucible rotates, the rotating component on the top seat drives the electric push rod to rotate. The electric push rod drives the column, telescopic rod, and rotating inner wall defect detection component to move synchronously. In conjunction with the adjustment component, the rotating inner wall defect detection component is adjusted to open and close. When the rotating inner wall defect detection component moves to the top of the ceramic crucible, multiple rotating inner wall defect detection components rotate to face the top of the ceramic crucible and acquire multi-point images of the rotating top of the ceramic crucible. After the top image is acquired, multiple rotating inner wall defect detection components rotate back to vertical and extend into the ceramic crucible. According to the change of the inner wall diameter of the crucible, the opening and closing adjustment is adaptively adjusted to acquire images of the inner wall. When moving to the bottom wall of the crucible, multiple rotating inner wall defect detection components rotate horizontally to the bottom wall and acquire images of the bottom wall. Effectively, according to the inner diameter of the crucible, multiple points of rapid image acquisition are acquired on the top inner wall and bottom wall of the crucible. After acquiring images of the inner wall of the crucible, the suction cup on the moving tube is moved by the electric push rod two to adsorb the bottom wall of the crucible. The adsorbed crucible is then slowly lifted upwards by the electric push rod one (at this time, the roller separates from the outer wall of the crucible). During the lifting process, the rotating component drives the crucible to rotate, and multiple moving detection components move from the outside to the center to perform multi-point all-round detection on the bottom of the crucible. During the upward rotation of the crucible, according to the change in the outer diameter of the crucible, the pusher pushes multiple outer wall defect detection components on the roller seat to adaptively move and control the distance between them and the outside of the crucible. This enables multi-point all-round defect detection on the outer ring wall of the ceramic crucible, effectively improving the detection efficiency while avoiding the phenomenon of undetectable obstructed parts. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a partial three-dimensional view of the structure of the present invention; Figure 4 For the present invention Figure 3 A stereoscopic view viewed from below; Figure 5 This is a three-dimensional structural view of the lifting mechanism and the outer wall defect detection component of the present invention; Figure 6 This is a three-dimensional structural view of the rotating component, adjusting component, and rotating inner wall defect detection component of the present invention; Figure 7 For the present invention Figure 6 Side view; Figure 8 The structure of the adjustment component is for the present invention; Figure 9 This is a top view of the present invention.

[0025] In the diagram: 1. Annular support; 2. Rotary seat; 3. Drive motor; 4. Linear electric guide rail one; 5. Machine base one; 6. Light source one; 7. Industrial camera one; 8. Support seat; 9. Linear electric guide rail two; 10. Moving ring; 11. Guide column; 12. Pushing component; 13. Roller seat; 14. Roller; 15. Light source two; 16. Industrial camera two; 17. Top seat; 18. Rotary disk; 19. Rotary motor; 20. Electric push rod one; 21. Column; 22. Moving seat ; 23. Miniature servo motor; 24. Rotating shaft; 25. Gear disk; 26. Gear groove; 27. Telescopic rod; 28. Rotating rod; 29. ​​Mounting frame; 30. Base II; 31. Light source III; 32. Industrial camera III; 33. Miniature motor; 34. Moving tube; 35. Suction cup; 36. Electric push rod II; 37. Vacuum pump; 38. Hose; 39. Conveyor; 40. Perforation; 41. Adjusting screw; 42. Adjusting nut; 43. Guide frame; 44. Guide wheel. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1 to 4 A ceramic crucible appearance defect detection device includes an annular support base 1, a drive motor 3, a rotating base 2, multiple moving detection components, a lifting mechanism, multiple pushing parts 12, a moving ring 10, an outer wall defect detection component, a top base 17, a rotating component, a column 21, multiple telescopic rods 27, a rotating inner wall defect detection component, an adjusting component, a moving tube 34, an electric push rod 36, a suction cup 35, a conveyor 39, a pair of through holes 40, an adjusting screw 41, an adjusting nut 42, a pair of guide frames 43, and multiple guide wheels 44.

[0028] The annular support base 1 is the basic load-bearing component of this equipment. It is made of high-strength cast iron and is in the shape of a hollow ring. The inner ring wall is provided with an annular groove, and the outer ring wall is fixedly connected to the support base 8. The bottom of the annular support base 1 is provided with a vibration damping pad for fixed connection with the ground.

[0029] The drive motor 3 is fixedly mounted on the vibration damping pad base by bolts. The end of the output shaft of the drive motor 3 is fixedly connected to the bottom center of the rotating seat 2 by a coupling. The rotating seat 2 has a disc-shaped structure. Its outer edge is fitted with a rolling bearing between it and the inner ring wall of the annular support seat 1, so that the rotating seat 2 can rotate smoothly in the annular groove of the inner ring wall of the annular support seat 1 in the circumferential direction. When the drive motor 3 is working, it drives the rotating seat 2 to rotate in the annular support seat 1. The upper surface of the rotating seat 2 is the support platform for placing the ceramic crucible.

[0030] The multiple moving detection components (three are set in this embodiment, and they are distributed in a ring at equal intervals on the upper surface of the rotating seat 2) have the same structure.

[0031] The mobile inspection assembly includes multiple mounting slots, a linear motorized guide rail 4, a base 5, a light source 6, and an industrial camera 7.

[0032] The upper surface of the rotating base 2 is provided with three mounting slots at equal intervals along the circumference. A linear electric guide rail 4 is embedded in each mounting slot. The linear electric guide rail 4 is fixed in the mounting slot by screws. The guide rail direction is set along the radial direction of the rotating base 2, that is, from the outer edge of the rotating base 2 to the center.

[0033] Each linear electric guide rail 4 has a base 5 fixedly mounted on its guide rail slide. A light source 6 and an industrial camera 7 are fixedly mounted on the upper surface of the base 5. The light source 6 is a ring-shaped LED surface light source, and the industrial camera 7 is a high-resolution CMOS industrial camera. The two are coaxially arranged. The light source 6 is located outside the industrial camera 7 and is used to provide uniform illumination to the bottom of the ceramic crucible and acquire bottom images. The three moving detection components can move synchronously radially from the outer edge of the rotating base 2 to the center, or from the center to the outer edge, under the drive of the linear electric guide rail 4, to achieve full coverage scanning detection of the bottom of the ceramic crucible.

[0034] Please see Figure 5 The lifting mechanism is located on one side of the annular support 1.

[0035] The lifting mechanism includes a support base 8, a linear electric guide rail 9, and multiple guide columns 11.

[0036] The support base 8 is vertically and fixedly welded to the rear side of the outer ring wall of the annular support base 1. The support base 8 has a gate-shaped frame structure with an opening in the middle. The linear electric guide rail 2 9 is vertically and fixedly installed on the rear surface of the support base 8. The guide rail direction of the linear electric guide rail 2 9 is vertical. Multiple guide columns 11 (two are provided in this embodiment) are vertically fixed on the left and right sides of the opening in the middle of the support base 8.

[0037] The movable ring 10 has a circular structure and is slidably sleeved on the outside of multiple guide posts 11. The outside of the movable ring 10 is fixedly connected to the guide rail slide of the linear electric guide rail 2 9. When the linear electric guide rail 2 9 is working, it drives the movable ring 10 to make vertical up-and-down linear movements along the guide posts 11.

[0038] Multiple pushing components 12 (three are provided in this embodiment) are fixedly installed in a ring at equal intervals on the outer ring wall of the moving ring 10. The pushing component 12 is an electric push rod three. The cylinder of the electric push rod three is fixed to the surface of the moving ring 10 through a flange. The push rod end of the electric push rod three extends downward to the center of the moving ring 10 and is fixedly connected to the roller seat 13.

[0039] Multiple roller seats 13 (three are provided in this embodiment) are connected to three pushers 12 one by one. Each roller seat 13 is equipped with multiple rollers 14 (two rollers 14 are provided on each roller seat 13 in this embodiment, which are symmetrically distributed with a gap in the middle). The rollers 14 are rubber-coated rollers and are used to contact the outer wall of the ceramic crucible. When the moving ring 10 descends, the rollers 14 on the three roller seats 13 gradually approach the outer wall of the ceramic crucible. The three pushers 12 work synchronously to push the three roller seats 13 to move towards the center of the moving ring 10, and automatically center and clamp the ceramic crucible in the center position of the rotating seat 2.

[0040] The outer wall defect detection component is mounted on the roller seat 13.

[0041] External wall defect detection assembly, including light source 215 and industrial camera 216. A second light source 15 and an industrial camera 16 are fixedly installed on each roller seat 13 in the area between the two rollers 14. The second light source 15 is a strip LED light source, and the second industrial camera 16 is a line scan industrial camera. The optical axes of the second light source 15 and the second industrial camera 16 both point to the center of the moving ring 10, that is, to the outer wall surface of the clamped ceramic crucible. The second light source 15 and the second industrial camera 16 continuously acquire line scan images of the outer ring wall of the ceramic crucible to realize full-circumference detection of defects on the outer wall.

[0042] Please see Figures 6 to 8 The top seat 17 is fixedly installed on the top of the lifting mechanism. Specifically, the top seat 17 is fixedly connected to the upper end of the support seat 8. The top seat 17 is located directly above the moving ring 10 and is set parallel to the moving ring 10. The vertical distance between the two can be adjusted by the linear electric guide rail 2 9.

[0043] The rotating assembly is mounted on the top seat 17.

[0044] The rotating assembly includes a rotary motor 19, a rotating groove, and a rotating disk 18.

[0045] The rotary motor 19 is fixedly installed at the center of the upper end face of the top seat 17 by bolts. The inner ring wall of the top seat 17 is provided with a rotating groove, and a rotating disk 18 is installed in the rotating groove. The rotating disk 18 can rotate in a circle in the rotating groove. The end of the output shaft of the rotary motor 19 is fixedly connected to the top center of the rotating disk 18 by a key.

[0046] The electric push rod 20 is fixedly installed at the bottom center of the rotating disk 18. The cylinder of the electric push rod 20 is fixed on the rotating disk 18. The push rod end of the electric push rod 20 extends downward. The column 21 is fixedly installed at the push rod end of the electric push rod 20. The column 21 is a hollow rectangular structure, and its axis is coaxial with the center of the moving ring 10.

[0047] Multiple telescopic rods 27 (three are provided in this embodiment) are hinged at equal intervals around the lower end of the column 21. The other end of each telescopic rod 27 is hinged to a rotating inner wall defect detection component.

[0048] The rotating inner wall defect detection assembly includes multiple mounting frames 29, micro motors 33, base 2 30, light source 3 31, and industrial camera 3 32.

[0049] The three mounting frames 29 are fixedly connected to the other ends of the three telescopic rods 27 one by one.

[0050] The micro motor 33 is fixedly installed on the outer wall of each mounting frame 29. The output shaft of the micro motor 33 extends through the side wall of the mounting frame 29 and into the interior of the mounting frame 29. The end of the output shaft is fixedly connected to the base 30. The base 30 is located in the internal cavity of the mounting frame 29 and can rotate relative to the mounting frame 29 under the drive of the micro motor 33. The light source 31 and the industrial camera 32 are both fixedly installed on the outer surface of the base 30. The light source 31 adopts a small ring light source, and the industrial camera 32 adopts a micro industrial camera.

[0051] The adjustment component is mounted on the column 21 and is used to drive the rotating inner wall defect detection component to adjust its opening and closing. The adjustment component includes a moving base 22, a micro servo motor 23, a rotating shaft 24, a gear disk 25, a toothed groove 26, and multiple rotating rods 28.

[0052] The movable base 22 is a rectangular sleeve structure that is slidably sleeved on the outside of the column 21. The movable base 22 can slide up and down along the axial direction of the column 21. The micro servo motor 23 is fixedly installed on the outer surface of the movable base 22 by bolts. One end of the rotating shaft 24 is connected to the output shaft of the micro servo motor 23 by a coupling. The other end of the rotating shaft 24 is rotatably connected to the surface of the movable base 22 by a bearing. The gear disk 25 is fixedly installed on the outside of the rotating shaft 24 with the same center. The tooth groove 26 is a rack structure that is opened on the outer surface of the column 21. The tooth groove 26 meshes with the gear disk 25.

[0053] The upper ends of multiple rotating rods 28 (three are provided in this embodiment) are hinged to the outer surface of the movable seat 22, and the lower ends are respectively hinged to the hinge points of three telescopic rods 27 near the end of the mounting frame 29. When the micro servo motor 23 drives the rotating shaft 24 to rotate, the gear disk 25 rolls along the tooth groove 26, driving the movable seat 22 to move up and down along the column 21. When the movable seat 22 moves up and down, through the hinge transmission of the multiple rotating rods 28, the three telescopic rods 27 are pushed to extend or retract synchronously, thereby driving the three rotating inner wall defect detection components to open and close synchronously, realizing the adaptive adjustment of the spacing between the detection components.

[0054] The moving tube 34 is a hollow cylindrical tube that is slidably installed in the internal cavity of the column 21. The upper end of the moving tube 34 is open, and the lower end extends downward through the lower end opening of the column 21. The electric push rod 36 is fixedly installed on the outer side of the column 21. The push rod end of the electric push rod 36 is fixedly connected to the upper side wall of the moving tube 34. The suction cup 35 is connected to the lower end outlet of the moving tube 34 and is made of silicone material.

[0055] When the electric push rod 36 is working, it pushes the moving tube 34 to slide up and down along the inside of the column 21, causing the suction cup 35 to move up and down. When the suction cup 35 moves down to fit against the bottom wall of the ceramic crucible, the vacuum pump 37 works to generate negative pressure. The negative pressure is transmitted to the suction cup 35 through the hose 38, the internal cavity of the column 21, and the moving tube 34, so that the suction cup 35 firmly adheres to the bottom wall of the ceramic crucible. One end of the hose 38 passes through the upper and lower surfaces of the rotating disk 18 and communicates with the inside of the column 21, while the other end is connected to the air extraction port of the vacuum pump 37. An automatic exhaust valve is provided on the outside of the hose 38. After the automatic exhaust valve is opened, the negative pressure between the suction cup 35 and the bottom wall of the ceramic crucible is released, achieving separation.

[0056] A vacuum pump 37 is also fixedly installed on the upper surface of the rotating disk 18. The vacuum pump 37 is connected to the inside of the column 21 through a hose 38.

[0057] Please see Figure 9 The conveyor 39 is mounted on the ground outside the annular support 1. The conveyor 39 adopts a belt conveyor structure, including a conveyor belt and a conveyor belt drive roller. A pair of through holes 40 are respectively opened on the front and rear side panels of the conveyor 39. The through holes 40 are elongated oval holes for the guide frame 43 to pass through.

[0058] A pair of guide frames 43 are placed on the upper surface of the conveyor belt, and the two are arranged in a Y-shaped opening. The pair of guide frames 43 pass through the through holes 40 on both sides of the conveyor 39 respectively. Each guide frame 43 is equipped with multiple guide wheels 44 (in this embodiment, each guide frame 43 is equipped with eight guide wheels 44), and the axis of the guide wheels 44 is horizontally arranged.

[0059] The adjusting screw 41 is fixedly installed on the outside of the guide frame 43 and extends out through the side wall of the conveyor 39. The adjusting nut 42 is two threads connected to the outside of the adjusting screw 41, located on the inside and outside of the conveyor 39 respectively. Rotating the adjusting nut 42 can drive the adjusting screw 41 to move axially, thereby adjusting the relative position of a pair of guide frames 43 in the through hole 40, that is, adjusting the width of the Y-shaped opening to adapt it to ceramic crucibles with different outer diameters.

[0060] Equipment installation: Step S1, Foundation Fixing: Place the annular support base 1 on a flat ground using the bottom vibration damping pads, and use anchor bolts to fix the annular support base 1 to the ground to ensure the overall stability of the equipment.

[0061] Step S2, Conveyor installation: Place the conveyor 39 on one side of the annular support 1, and adjust the height of the conveyor belt of the conveyor 39 so that it is at the same level as or slightly higher than the upper surface of the rotating seat 2 by 5-10mm, so that the ceramic crucible can be smoothly transferred from the conveyor belt to the rotating seat 2.

[0062] Step S3, guide frame adjustment: According to the outer diameter D of the ceramic crucible to be tested, rotate the adjusting nut 42 to move a pair of guide frames 43 along the adjusting screw 41 until the width of the Y-shaped opening is equal to 1.05 to 1.1 times the outer diameter D of the ceramic crucible (leaving a small gap), so that the distance between the guide wheels 44 is adapted to the outer diameter of the crucible.

[0063] Testing workflow: Step 1: Feeding. The ceramic crucible is placed on the conveyor belt of the conveyor 39. The conveyor belt transports the crucible towards the annular support 1. The crucible enters the Y-shaped opening between a pair of guide frames 43. The guide wheel 44 guides and limits the crucible, so that the crucible moves smoothly along the center line of the Y-shaped opening and is finally guided to the upper surface of the rotating seat 2.

[0064] Step two: Centering and clamping. The linear electric guide rail 2 9 on the support base 8 works, driving the moving ring 10 to move downward along the guide column 11. During the descent of the moving ring 10, the three pushing parts 12 (electric push rods 3) work synchronously, pushing the three roller seats 13 to move towards the center of the moving ring 10. The rollers 14 on the three roller seats 13 gradually contact the outer wall of the ceramic crucible, continuously applying pressure and pushing until the three rollers 14 are evenly distributed around the outer wall of the ceramic crucible, automatically centering and clamping the ceramic crucible in the center position of the rotating base 2. At this time, the light source 2 15 and the industrial camera 2 16 are located between the rollers 14, facing the outer wall of the ceramic crucible.

[0065] Step 3, bottom detection: The drive motor 3 starts, causing the rotating seat 2 and the clamped ceramic crucible to rotate in a circle between the rollers 14. During the rotation, the linear electric guide rail 4 of the three moving detection components drives the light source 6 and the industrial camera 7 to move synchronously from the outer edge of the rotating seat 2 towards the center, so as to acquire a preliminary image of the bottom of the ceramic crucible.

[0066] Step four, inner wall and top inspection: The rotary motor 19 on the top seat 17 is started, which drives the rotating disk 18 to rotate in the rotating groove, thereby driving the electric push rod 20, column 21, telescopic rod 27 and three rotating inner wall defect detection components to revolve around the center synchronously.

[0067] At the same time, the adjustment component works, the micro servo motor 23 drives the gear disk 25 on the rotating shaft 24 to rotate, the gear disk 25 rolls along the tooth groove 26 on the column 21, driving the moving seat 22 to move downward along the column 21. When the moving seat 22 moves downward, it drives the three telescopic rods 27 to retract synchronously through the hinge transmission of the three rotating rods 28, driving the three rotating inner wall defect detection components to retract towards the axis of the column 21 (the opening and closing distance is reduced), so that it adapts to the inner diameter of the ceramic crucible.

[0068] When the three rotating inner wall defect detection components move to the top of the ceramic crucible as they revolve, the micro motors 33 on the three mounting frames 29 work synchronously, driving the light source 31 and industrial camera 32 on the base 2 30 to rotate to a downward position, and to acquire multi-point images of the top opening and top edge of the ceramic crucible.

[0069] After the top image acquisition is completed, the micro motor 33 drives the light source 31 and the industrial camera 32 to rotate and reset. The electric push rod 20 works, pushing the column 21 and the rotating inner wall defect detection assembly to move downward as a whole, so that the three rotating inner wall defect detection assemblies extend into the internal cavity of the ceramic crucible. At this time, according to the change of the inner diameter of the crucible, the adjustment assembly can adjust the extension length of the telescopic rod 27 in real time, so that the light source 31 and the industrial camera 32 maintain the optimal working distance (usually 30-50mm) from the inner wall of the crucible, and perform 360° all-round multi-point image acquisition on the inner wall of the crucible.

[0070] When the rotating inner wall defect detection component moves to directly below the bottom wall of the ceramic crucible, the micro motor 33 starts working again, driving the light source 31 and the industrial camera 32 to rotate to a horizontal downward position, so as to acquire images of the inner surface of the bottom wall of the ceramic crucible.

[0071] Step 5: Adsorption lifting and fine bottom inspection. After the images of the inner wall and bottom wall are acquired, the electric push rod 36 operates, pushing the moving tube 34 to slide downward along the inside of the column 21, causing the suction cup 35 to move down and fit tightly against the outer surface of the bottom wall of the ceramic crucible. The vacuum pump 37 is started, and negative pressure is applied to the suction cup 35 through the hose 38, the internal cavity of the column 21, and the moving tube 34, so that the suction cup 35 firmly adheres to the bottom wall of the ceramic crucible.

[0072] Subsequently, the electric push rod 20 operates, pushing the column 21 and the adsorbed ceramic crucible upward as a whole. During the lifting process, the ceramic crucible is released from the clamping of the rotating seat 2 and the roller 14, and the roller 14 separates from the outer wall of the crucible. At this time, the pushing component 12 (electric push rod 3) works synchronously, pushing the light source 15 and the industrial camera 16 on the roller seat 13 to adaptively adjust the distance between themselves and the outer wall of the crucible according to the real-time change of the outer diameter of the crucible, so as to maintain the optimal imaging distance.

[0073] During the lifting process, the rotary motor 19 drives the crucible to rotate continuously at a slow speed. The linear electric guide rail 4 of the three moving detection components drives the light source 6 and the industrial camera 7 to move continuously from the outer edge of the rotating seat 2 towards the center, performing a full-coverage fine scanning detection of the outer surface of the bottom of the ceramic crucible that has been separated from the rotating seat 2 from the outside in.

[0074] Step 6, material unloading: After the inspection is completed, the electric push rod 2 36 retracts, the moving tube 34 moves upward, the automatic exhaust valve opens, the suction cup 35 releases the negative pressure, and the ceramic crucible separates from the suction cup 35 for material unloading.

[0075] This equipment is equipped with a PLC main controller, which serves as the control core of the entire testing equipment. The PLC main controller communicates with each actuator and sensor via industrial Ethernet.

[0076] Core control logic: (1) Adaptive clamping control: The PLC calculates the outer diameter of the crucible in real time based on the image of the outer wall of the crucible collected by the industrial camera 16, and feeds the data back to the control module of the pusher 12. The electric push rod 3 automatically adjusts the extension length according to the outer diameter, so that the roller 14 always adheres to the outer wall of the crucible with a constant clamping force. The clamping force is controlled by the pressure sensor in a closed loop, and the setting range is 10-30N.

[0077] (2) Inner wall detection and adaptive control: micro servo motor 23 receives the target position command sent by PLC, drives gear disk 25 to roll along tooth groove 26, and moving seat 22 to move along column 21. Column 21 is equipped with multiple position detection switches (corresponding to different inner diameter specifications). PLC selects the corresponding target position according to the crucible inner diameter image collected by industrial camera 32, and drives the adjustment component to adjust telescopic rod 27 to the appropriate position, so that light source 31 and industrial camera 32 maintain the optimal working distance of 30-50mm from the inner wall of crucible.

[0078] (3) Bottom detection radial scanning control: Three linear electric guide rails 4 receive the synchronous pulse command of PLC and move radially from the outside to the inside at the same speed. During the movement, light source 6 and industrial camera 7 continuously collect images at the set frame rate. PLC stitches the collected images into a complete image of the bottom of the crucible and compares it with the preset qualified standard, automatically marking the defect location and type (chipping, crack, bubble, impurity, etc.).

[0079] (4) Enhanced detection linkage control: The action of electric push rod 236 is strictly interlocked with the lifting action of electric push rod 120. The PLC control logic is as follows: electric push rod 236 moves down first → vacuum pressure sensor confirms successful adsorption → electric push rod 120 starts lifting → during the lifting process, rotary motor 19 rotates slowly → linear electric guide rail 14 scans radially synchronously → after lifting to the position, electric push rod 236 retracts → automatic exhaust valve opens → unloading.

[0080] Beneficial effects

[0081] (1) All-round unobstructed detection: This equipment achieves full coverage detection of the outer surface of the bottom, inner surface of the bottom, inner ring wall, top and top wall of the ceramic crucible through the triple motion of the revolution + rotation + extension of the rotating inner wall defect detection component, combined with the radial scanning of the moving detection component. In particular, after the rotating inner wall defect detection component is inserted into the crucible, the micro motor 33 can adjust the camera orientation, eliminating the line of sight obstruction problem of the traditional fixed detection head, and the detection coverage is close to 100%.

[0082] (2) Adaptive multi-specification compatibility: By adjusting the gear-rack transmission mechanism of the component, the rotating inner wall defect detection component can automatically open and close according to the inner diameter of the crucible. By controlling the electric push rod of the pusher 12, the roller clamping mechanism can automatically center according to the outer diameter of the crucible. The same equipment can be compatible with the detection of ceramic crucibles of different diameters without changing the fixture, thus shortening the changeover time.

[0083] (3) The detection efficiency is greatly improved. This equipment completes the detection of the bottom, inner wall, top and outer wall in one clamping, without the need for multiple flipping or re-clamping. The bottom detection adopts three sets of cameras for synchronous radial scanning, and the inner wall detection adopts synchronous acquisition of revolution and rotation. The detection time of a single piece is shortened and the detection efficiency is improved.

[0084] (4) Adsorption-lifting bottom detection avoids scratches. Traditional bottom detection requires the crucible to be flipped and placed on the detection platform. During the flipping process, there is a risk of the crucible being bumped and scratched. This equipment adopts the method of adsorption by suction cup 35 and then lifting directly. The crucible always maintains an upright posture, completely avoiding secondary damage caused by flipping.

[0085] (5) The outer wall detection and clamping mechanism are integrated. The roller 14 serves as both a central clamping element and a motion bearing platform for detection. The second light source 15 and the second industrial camera 16 are integrated on the roller seat 13. The structure is compact, reducing the number of independent detection mechanisms and lowering equipment costs and failure rates.

[0086] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ceramic crucible appearance defect detection device, comprising an annular support base, characterized in that, Also includes: A drive motor is mounted on the annular support base and drives the rotating seat to rotate circumferentially within the annular support base. Multiple moving detection components are arranged in a ring at equal distances on the upper end of the rotating seat, and move synchronously toward and away from the center of the rotating seat to detect the bottom of the placed ceramic crucible; The lifting mechanism is vertically mounted on the annular support base, driving the movable ring located above the annular support base and concentrically positioned to move up and down. Multiple pushing components are arranged in a ring at equal intervals on the moving ring, pushing multiple rollers on the roller seat to move closer to and further away from the center of the moving ring and to centrally clamp the ceramic crucible; An outer wall defect detection component is mounted on the roller seat to detect defects in the outer ring wall of the ceramic crucible. The top seat is mounted on the lifting mechanism and is positioned parallel to the moving ring above it. A rotating component is mounted on the top seat, which drives an electric push rod to rotate in a circle. The electric push rod is arranged with the same center as the moving ring. A column is installed at the push rod of the electric push rod; Multiple telescopic rods are arranged in a ring at equal intervals outside the column; A rotating inner wall defect detection component is located at the other end of the telescopic rod to detect the inner ring wall, top and bottom walls of the ceramic crucible. An adjustment component, located on the column, drives the rotating inner wall defect detection component to adjust its opening and closing. A movable tube, which slides inside the column and passes through to the lower end of the column; The second electric push rod is mounted on the column and pushes the suction cup connected to the moving tube to move, adsorbing the bottom wall of the ceramic crucible.

2. The ceramic crucible appearance defect detection device according to claim 1, characterized in that: It also includes a conveyor, a pair of perforations, an adjusting screw, an adjusting nut, a pair of guide frames, and multiple guide wheels; A conveyor, located outside the annular support, includes a conveyor belt; A pair of perforations are provided on opposite sides of the conveyor; A pair of guide frames, arranged in a Y-shape and placed on the surface of the conveyor belt, pass through the perforations respectively; An adjusting screw is mounted on the guide frame and passes through the conveyor, and an adjusting nut is threaded onto the outside of the adjusting screw.

3. The ceramic crucible appearance defect detection device according to claim 1, characterized in that: The mobile detection component includes multiple mounting slots, a linear electric guide rail, a base, a light source, and an industrial camera. Multiple mounting slots are arranged in a ring at equal intervals on the upper surface of the rotating seat, and a linear electric guide rail is arranged in the mounting slot; A base is located at the guide slide of the linear electric guide rail, and both the light source and the industrial camera are located on the base.

4. The ceramic crucible appearance defect detection device according to claim 1, characterized in that: The lifting mechanism includes a support base, two linear electric guide rails, and multiple guide columns; A support base is vertically disposed on the outer ring wall of the annular support base, and a linear electric guide rail is vertically disposed on the surface of the support base; Multiple guide pillars are provided at the central opening of the support base; The movable ring is connected to the guide rail slide of the second linear electric guide rail and is passed through by the guide post.

5. The ceramic crucible appearance defect detection device according to claim 1, characterized in that: The pushing component is an electric push rod three, and the push rod of the electric push rod three is connected to the roller seat.

6. The ceramic crucible appearance defect detection device according to claim 1, characterized in that: The outer wall defect detection component includes a second light source and a second industrial camera; The second light source and the second industrial camera are both mounted on the roller base and located between the rollers.

7. The ceramic crucible appearance defect detection device according to claim 1, characterized in that: The rotating assembly includes a rotating motor, a rotating groove, and a rotating disk; A rotary motor is located at the upper end of the top seat; A rotating groove is provided on the top seat for the rotating disk to rotate circumferentially; The output end of the rotary motor is connected to the center of the rotating disk, and an electric push rod is located at the center of the rotating disk.

8. The ceramic crucible appearance defect detection device according to claim 1, characterized in that: The rotating inner wall defect detection assembly includes multiple mounting frames, a micro motor, a base, a light source, and an industrial camera. Multiple mounting frames are provided at the other end of the telescopic rod, with an equal number of frames corresponding one-to-one. A micro motor is located on the outside of the mounting frame, and a base is located at the output end of the micro motor and inside the mounting frame; The third light source and the third industrial camera are both located on the surface of the second base.

9. The ceramic crucible appearance defect detection device according to claim 1, characterized in that: The adjustment assembly includes a movable base, a micro servo motor, a rotating shaft, a gear disk, a toothed groove, and multiple rotating rods; The movable seat is slidably sleeved on the outside of the column; A miniature servo motor is mounted on the surface of the movable base, with one end of the rotating shaft connected to the output end of the miniature servo motor and the other end connected to the movable base for rotation. A gear disk is concentrically located outside the rotating shaft, and tooth grooves are located on the surface of the column and mesh with the gear disk; Multiple rotating rods are respectively hinged between the movable seat and the telescopic rod.

10. The ceramic crucible appearance defect detection device according to claim 7, characterized in that: The surface of the rotating disk is equipped with a vacuum pump, and a flexible hose is connected between the air intake of the vacuum pump and the column. The hose has an external connection with an automatic vent valve.

Images