A silicon nitride ceramic material surface defect detection device

Abstract

The present invention provides a silicon nitride ceramic material surface defect detection device, which belongs to the field of surface defect detection devices, including a main base, a detection base is arranged on the right side of the main base, and a transfer bracket is fixed to the rear side of the main base; a material moving motion component, the material moving motion component includes a material moving plate arranged on the main base, and a placement groove and a transverse groove are opened on the top of the material moving plate. The present invention can quickly perform synchronous defect detection on the top, bottom and outer ring of the cylindrical silicon nitride material through the material moving motion component and the detection component, and the detection is sufficient and complete, and different clamping and fixing structures can be quickly replaced within a certain range according to cylindrical silicon nitride materials with different outer diameters, and the replacement operation is simple and convenient, so that the application range of the equipment is wide; and the cylindrical silicon nitride material can be continuously detected, which reduces the time wasted in loading and unloading, improves the detection speed, and thus improves the detection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of surface defect detection equipment, in particular to a surface defect detection equipment for silicon nitride ceramic materials. Background Art

[0002] Ceramics are generally lightweight, heat-insulating, heat-resistant, and corrosion-resistant, and are widely used in filtration, catalysis, sound absorption, gas sensing, and artificial bones. Compared with oxide-based ceramics, Si3N4 ceramics have high strength, low dielectric constant, and stability, and have attracted extensive research as a new type of integrated material. During the processing of ceramic materials, due to the processing technology, surface defects will occur on the surface of silicon nitride ceramic materials. Surface defects will bring safety hazards to silicon nitride ceramic materials in actual applications. Therefore, a surface defect detection device is needed to detect surface defects of silicon nitride ceramic materials.

[0003] Fixed-point camera detection is often used to detect surface defects of a common type of cylindrical ceramic materials. The cylindrical ceramic material is continuously passed under the fixed-point detection camera, and the images transmitted by the detection camera are sent to a computer for analysis to see if there are any defects. The problem with this detection method is that it can only detect a single side of the cylindrical ceramic material, and the outer surface of the cylindrical ceramic material includes two upper and lower planes and an outer curved surface. This results in this detection method often having to repeat the detection of the cylindrical ceramic material several times to achieve a complete detection of it. However, repeated detection takes a long time, and the time consumed by the loading and unloading steps also increases exponentially, which reduces the detection speed and calibration efficiency.

[0004] Therefore, we propose a surface defect detection device for silicon nitride ceramic materials to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a silicon nitride ceramic material surface defect detection device to solve the problems raised in the above background technology.

[0006] The object of the present invention can be achieved by the following technical solution: comprising a mainframe base, a detection base is arranged on the right side of the mainframe base, and a transfer bracket is fixed on the rear side of the mainframe base;

[0007] The top of the material moving plate is provided with a placement slot and a transverse slot, and the adjacent transverse slots are connected to the placement slot, and the placement slot and the transverse slot are both distributed in a circular shape. A pad is fixedly connected to the lower side of the placement slot, and a triangular fixing seat is fixedly connected to the top of the material moving plate and located above the placement slot. The top adjacent sides of the triangular fixing seat are respectively fixedly connected to a fixing shaft, and the outer side of the fixing shaft is rotatably connected to a driven fixing wheel. A strip groove is provided on the other side of the triangular fixing seat, and a rotating shaft is inserted in the strip groove. The bottom of the triangular fixing seat is slidably connected to a base, and a guide sleeve is fixedly connected to the bottom of the base, and the rotating shaft is rotatably connected to an adjacent guide sleeve. One side of the base is also fixedly connected to a vertical plate, and the A limiting plate is also fixedly connected to the bottom of the triangular fixing seat near the base side, a first spring is arranged between the limiting plate and the vertical plate, two ends of the first spring are respectively fixedly connected to the adjacent sides of the limiting plate and the vertical plate, an active fixing wheel is fixedly connected to the outer upper side of the rotating shaft, a locking sleeve is threadedly connected to the outer sides of the top ends of the rotating shaft and the fixed shaft, a fixing frame distributed in a triangular shape is fixedly connected to the triangular fixing seat, one of the fixing frames is fixedly connected to a motor fixing plate, a micro motor is fixedly connected to the motor fixing plate, a driving shaft is rotatably connected between the motor fixing plate and the triangular fixing seat, one end of the driving shaft is fixedly connected to the output end of the micro motor, a pulley is fixedly connected to the outer lower side of the driving shaft and the rotating shaft, and a belt is tensioned between the two pulleys.

[0008] As a preferred embodiment of the present invention, it also includes a material picking assembly, which includes a rotating plate rotatably connected to the top of the transfer bracket, the bottom of the transfer bracket is fixedly connected to a transfer motor, the output end of the transfer motor is fixedly connected to the rotating plate, the front and rear sides of the top of the rotating plate are respectively fixedly connected to electric cylinders, the output end of the electric cylinder is fixedly connected to a clamping seat, a sliding groove is provided at the bottom of the clamping seat, a step groove is provided on one side of the clamping seat, a connecting column is slidably connected in the sliding groove, a clamping groove is provided on the side wall of the connecting column, a clamping claw disk is fixedly connected to the bottom of the connecting column, a clamping rod is slidably connected in the step groove, a baffle is fixedly connected to the outside of the step groove, one end of the clamping rod passes through one side of the baffle and extends to its outside, and a second spring is also sleeved on the outside of the clamping rod.

[0009] As a preferred embodiment of the present invention, it also includes a detection component, which includes a C-shaped frame fixedly connected to the detection seat, and detection cameras are fixedly connected to the top, bottom and side walls of the C-shaped frame.

[0010] As a preferred embodiment of the present invention, a butterfly groove is provided on the pad, and two side walls of the opening of the butterfly groove are coplanar with two side walls of an adjacent transverse groove.

[0011] As a preferred embodiment of the present invention, a rotating mechanism is arranged in the main engine seat, and the output end of the rotating mechanism is connected to the bottom connecting shaft of the material transfer tray.

[0012] As a preferred embodiment of the present invention, a cylindrical silicon nitride material is placed in the placement groove, the bottom of the cylindrical silicon nitride material abuts against the adjacent pad, and the outer wall of the cylindrical silicon nitride material abuts against the adjacent driven fixed wheel and the active fixed wheel respectively.

[0013] As a preferred embodiment of the present invention, a limiting portion is fixedly connected to the middle of the outer side of the clamping rod, the outer diameter of the limiting portion is adapted to the maximum inner diameter of the step groove, and the two ends of the second spring are respectively abutted against the adjacent sides of the limiting portion and the baffle.

[0014] As a preferred embodiment of the present invention, a rounded corner is arranged on one side of the clamping rod close to the connecting column, and friction grooves are arranged on the outer side of the other side of the clamping rod and are distributed in a circumferential manner.

[0015] As a preferred embodiment of the present invention, a clamping portion is fixedly connected to the bottom of the clamping claw plate, and the inner diameter of the clamping portion is matched with the outer diameter of the cylindrical silicon nitride material placed in the placement groove.

[0016] As a preferred embodiment of the present invention, the clamping portion and the axis of the cylindrical silicon nitride material placed in the adjacent placement groove below it are not colinear.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Through the set material transfer motion component and detection component, the top, bottom and outer ring of the cylindrical silicon nitride material can be quickly and synchronously detected for defects. The detection is sufficient and complete, and different clamping and fixing structures can be quickly replaced within a certain range according to cylindrical silicon nitride materials with different outer diameters. The replacement operation is simple and convenient, making the application range of the equipment wider; and the cylindrical silicon nitride material can be continuously tested, which reduces the time wasted in loading and unloading, increases the detection speed, and thus improves the detection efficiency;

[0019] By setting up the material picking component, the restriction of the active fixed wheel on the cylindrical silicon nitride material can be released during material picking, and it can be clamped and automatically transferred simultaneously, which effectively cooperates with the material transfer motion component to perform material unloading operations, realizes the automatic unloading function, reduces the use of electrical structures, and is conducive to reducing the overall cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0021] Figure 1It is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 It is one of the partially enlarged structural schematic diagrams of the present invention;

[0023] Figure 3 This is the second partially enlarged structural schematic diagram of the present invention;

[0024] Figure 4 It is a partially enlarged cross-sectional structural schematic diagram of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional enlarged structure of the material transfer tray in the present invention;

[0026] Figure 6 It is a schematic diagram of the enlarged structure of the pad in the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional enlarged structure of the triangular fixing seat in the present invention;

[0028] Figure 8 It is an enlarged structural schematic diagram of the clamping part in the present invention cooperating with the cylindrical silicon nitride material below it;

[0029] Fig. 9 yes Figure 3 An enlarged schematic diagram of part A is shown.

[0030] In the figure: 1. Mainframe; 2. Detection base; 3. Transfer bracket; 4. Material transfer tray; 5. Placement slot; 6. Horizontal slot; 7. Pad; 8. Triangular fixed seat; 9. Fixed shaft; 10. Driven fixed wheel; 11. Strip slot; 12. Rotating shaft; 13. Base; 14. Guide sleeve; 15. Vertical plate; 16. Limit plate; 17. First spring; 18. Active fixed wheel; 19. Locking sleeve; 20. Fixed frame; 21. Motor fixed plate; 22. Micro Motor; 23. driving shaft; 24. pulley; 25. belt; 26. rotating plate; 27. transfer motor; 28. electric cylinder; 29. ​​clamping seat; 30. slide groove; 31. step groove; 32. connecting column; 33. slot; 34. clamping claw plate; 35. clamping rod; 36. baffle; 37. C-type frame; 38. detection camera; 39. butterfly groove; 40. cylindrical silicon nitride material; 41. limit part; 42. second spring; 43. clamping part. DETAILED DESCRIPTION

[0031] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 9 As shown, a silicon nitride ceramic material surface defect detection device includes a main base 1, a detection base 2 is arranged on the right side of the main base 1, a transfer bracket 3 is fixed to the rear side of the main base 1, and a height adjustment mechanism can be arranged on the detection base 2 to adjust the height of the C-shaped frame 37, which is conducive to adjusting the detection distance between the detection camera 38 and the cylindrical silicon nitride material 40. The transfer bracket 3 is connected to the main base 1 and is used to install structures such as a rotating plate 26 and a transfer motor 27;

[0033] The material shifting motion component includes a material shifting plate 4 arranged on the main base 1, a placement groove 5 and a transverse groove 6 are provided on the top of the material shifting plate 4, the adjacent transverse grooves 6 are connected to the placement grooves 5, the placement grooves 5 and the transverse grooves 6 are distributed in a circle, a pad 7 is fixedly connected to the lower side of the placement groove 5, a cylindrical silicon nitride material 40 is placed in the placement groove 5, the bottom of the cylindrical silicon nitride material 40 is in contact with the adjacent pad 7, and the outer wall of the cylindrical silicon nitride material 40 is in contact with the adjacent driven fixed wheel 10 and The active fixed wheels 18 are respectively abutted, and a triangular fixed seat 8 is fixedly connected to the top of the material transfer tray 4 and above the placement groove 5. The top adjacent sides of the triangular fixed seat 8 are respectively fixedly connected to fixed shafts 9, and the outer side of the fixed shaft 9 is rotatably connected to a driven fixed wheel 10. A strip groove 11 is opened on the other side of the triangular fixed seat 8, and a rotating shaft 12 is inserted in the strip groove 11. The bottom of the triangular fixed seat 8 is slidably connected to a base 13, and a guide sleeve 14 is fixedly connected under the base 13. The rotating shaft 12 is rotatably connected Connected in the adjacent guide sleeve 14, one side of the base 13 is also fixedly connected with a vertical plate 15, and the bottom of the triangular fixed seat 8 close to the base 13 is also fixedly connected with a limiting plate 16, and a first spring 17 is arranged between the limiting plate 16 and the vertical plate 15, and the two ends of the first spring 17 are respectively fixedly connected to the adjacent sides of the limiting plate 16 and the vertical plate 15, and the outer upper side of the rotating shaft 12 is fixedly connected with an active fixing wheel 18, and the outer sides of the top ends of the rotating shaft 12 and the fixed shaft 9 are both threadedly connected with a locking sleeve 19, and the triangular fixed seat 8 is fixedly connected with a fixing frame 20 distributed in a triangle, one of the fixing frames 20 is fixedly connected with a motor fixing plate 21, and the motor fixing plate 21 is fixedly connected with a micro motor 22, and a driving shaft 23 is rotatably connected between the motor fixing plate 21 and the triangular fixed seat 8, and one end of the driving shaft 23 is fixedly connected to the output end of the micro motor 22, and the driving shaft 23 and the outer lower side of the rotating shaft 12 are fixedly connected with a pulley 24, and a belt 25 is tensioned between the two pulleys 24.

[0034] It should be noted that the placement groove 5 is used to place the cylindrical silicon nitride material 40, and its inner diameter limits the maximum outer diameter of the cylindrical silicon nitride material 40 that can be placed. The transverse groove 6 can facilitate the side detection camera 38 to detect the arc-shaped side of the cylindrical silicon nitride material 40 without being blocked. During the detection process, the cylindrical silicon nitride material 40 is clamped and fixed by the cooperation of the active fixed wheel 18 and the driven fixed wheel 10. At the same time, it is driven by the micro motor 22, and the power is transmitted through the pulley 24 and the belt 25 to rotate the active fixed wheel 18. The active fixed wheel 18 contacts and squeezes the outer wall of the cylindrical silicon nitride material 40, so that it also rotates during the clamping process, so that the detection camera 38 on the side can completely detect its side, and at the same time, the detection camera 38 below it can also synchronously perform a complete detection of its bottom through the butterfly groove 39. The pad 7 is used to support the bottom of the cylindrical silicon nitride material 40 when it is placed to prevent it from falling directly and fixing it. The shaft 9 is used to install the driven fixed wheel 10, the strip groove 11 is used to enable the rotating shaft 12 to move with the base 13 within a certain range, the guide sleeve 14 is used to support and position the rotating shaft 12, the vertical plate 15 is used to cooperate with the limiting plate 16 to install the first spring 17, and the first spring 17 can press the base 13 through the vertical plate 15 so that it is always at the farthest end from the limiting plate 16, and the locking sleeve 19 is used to limit the top of the driven fixed wheel 10 and the active fixed wheel 18, and can be rotated and removed when needed, which is convenient The specifications of the driven fixed wheel 10 and the active fixed wheel 18 are replaced. After the specifications of the cylindrical silicon nitride material 40 are changed, the specifications of the driven fixed wheel 10 and the active fixed wheel 18 also need to be replaced synchronously. Through the set material transfer motion component, the rapid transfer of the cylindrical silicon nitride material 40 and the rotation of the cylindrical silicon nitride material 40 can be realized, which is convenient for non-stop detection operations and convenient for the detection camera 38 to fully detect the external surface defects of the cylindrical silicon nitride material 40 passing through.

[0035] The material picking assembly also includes a rotating plate 26 rotatably connected to the top of the transfer bracket 3, a transfer motor 27 is fixedly connected to the bottom of the transfer bracket 3, the output end of the transfer motor 27 is fixedly connected to the rotating plate 26, the front and rear sides of the top of the rotating plate 26 are respectively fixedly connected to the electric cylinder 28, the output end of the electric cylinder 28 is fixedly connected to the clamping seat 29, a slide groove 30 is provided at the bottom of the clamping seat 29, a step groove 31 is provided on one side of the clamping seat 29, a connecting column 32 is slidably connected in the slide groove 30, a card groove 33 is provided on the side wall of the connecting column 32, a clamping claw disk 34 is fixedly connected to the bottom of the connecting column 32, a card rod 35 is slidably connected in the step groove 31, a baffle 36 is fixedly connected to the outside of the step groove 31, one end of the card rod 35 passes through one side of the baffle 36 and extends to its outside, and a second spring 42 is also sleeved on the outside of the card rod 35.

[0036] It should be noted that the transfer motor 27 is used to drive the rotating plate 26 to rotate, driving the cylindrical silicon nitride material 40 that has been tested under the clamp seat 29 to be transferred and unloaded from the material transfer plate 4, and the electric cylinder 28 is used to drive the clamping claw plate 34 and the clamping part 43 to rise and fall, so as to clamp the cylindrical silicon nitride material 40 that has been tested. The slide groove 30 is used to guide the connecting column 32 to facilitate its insertion, and the stepped groove 31 can facilitate the insertion of the clamping rod 35. The clamping groove 33 is used to embed the clamping rod 35 to facilitate the fixing of the connecting column 32. The baffle 36 is used to limit the second spring 42. By providing the above structure, it is convenient to realize the disassembly and assembly operations of the connecting column 32 and the clamping claw plate 34 and the clamping part 43 thereunder. Since the outer diameter specification of the cylindrical silicon nitride material 40 being tested will change, the corresponding clamping claw plate 34 and clamping part 43 also need to be replaced. Therefore, a connection structure that is easy to replace is needed. Two sets of front and rear material picking structures are symmetrically arranged to facilitate the simultaneous picking and unloading of materials, reduce the overall working time, and facilitate the rapid transfer of the cylindrical silicon nitride material 40 thereunder. Through the set material picking component, the restriction of the active fixed wheel 18 on the cylindrical silicon nitride material 40 can be released during material picking, and the material can be clamped and automatically transferred simultaneously, which effectively cooperates with the material moving motion component to perform material unloading operations, can realize the automatic unloading function, reduce the use of electrical structure, and is conducive to reducing the overall cost of the equipment.

[0037] In the present embodiment, a detection component is also included, which includes a C-frame 37 fixedly connected to the detection seat 2, and detection cameras 38 are fixedly connected to the top, bottom and side walls of the C-frame 37. By providing three groups of detection cameras 38, the three surfaces of the cylindrical silicon nitride material 40 can be synchronously detected at the same time, effectively realizing a single all-round detection with high detection completion and fewer detection times.

[0038] In this embodiment, a butterfly groove 39 is opened on the pad 7, and the two side walls of the opening of the butterfly groove 39 are coplanar with the two side walls of the adjacent transverse groove 6. The butterfly groove 39 can support the cylindrical silicon nitride material 40 while exposing most of the bottom area of ​​the cylindrical silicon nitride material 40, so as to be detected by the detection camera 38 therebelow, while taking into account both the detection area and the support area.

[0039] In this embodiment, a rotating mechanism is provided in the main base 1, and the output end of the rotating mechanism is connected to the bottom connecting shaft of the material transfer tray 4. The rotating mechanism can be coordinated with a servo motor and a reduction gearbox to realize the fixed-angle rotation of the material transfer tray 4. After each rotation, a cylindrical silicon nitride material 40 will move in the center of the detection area for detection by the detection camera 38, which is convenient for non-stop loading and detection and improves the detection speed.

[0040] In this embodiment, a limiting portion 41 is fixedly connected to the middle of the outer side of the clamping rod 35, and the outer diameter of the limiting portion 41 is adapted to the maximum inner diameter of the stepped groove 31. The two ends of the second spring 42 are respectively abutted against the adjacent sides of the limiting portion 41 and the baffle 36. The limiting portion 41 is used to limit one end of the second spring 42 so that the second spring 42 can transmit the clamping force of the clamping rod 35, which is convenient for installation and matching.

[0041] In this embodiment, a rounded corner is provided on one side of the clamping rod 35 close to the connecting column 32, and a friction groove is provided on the outer side of the other side of the clamping rod 35 and is distributed in a circular pattern. The rounded corner can facilitate the top end of the clamping rod 35 to cooperate with the rounded corner of the clamping rod 35 to push the clamping rod 35 back into the stepped groove 31 when inserting the connecting column 32. The friction groove can increase the friction force, making it easier for the operator to pull the clamping rod 35 and facilitating the operation process.

[0042] In this embodiment, a clamping portion 43 is fixedly connected to the bottom of the clamping claw plate 34, and the inner diameter of the clamping portion 43 is adapted to the outer diameter of the cylindrical silicon nitride material 40 placed in the placement groove 5. The clamping portion 43 is not colinear with the axis of the cylindrical silicon nitride material 40 placed in the adjacent placement groove 5 below it. Since the axis of the clamping portion 43 is not colinear with the axis of the cylindrical silicon nitride material 40 moving below it, when the clamping portion 43 contacts the cylindrical silicon nitride material 40, it pushes the cylindrical silicon nitride material 40 to move to the side close to the active fixed wheel 18 through its inner inclined surface, so that the active fixed wheel 18 drives the base 13 to compress the first A spring 17 moves a certain distance, and the inner surface of the clamping part 43 that continues to descend will clamp the cylindrical silicon nitride material 40 that is not constrained by the driven fixed wheel 10 at this time, and constrain it through friction. Then, the constrained cylindrical silicon nitride material 40 is driven to move upward through the operation of the electric cylinder 28, so as to facilitate the removal of the cylindrical silicon nitride material 40 from between the active fixed wheel 18 and the driven fixed wheel 10. The cross-sectional shape of the clamping part 43 is Z-shaped, and the length of the side with the larger outer diameter should be sufficient to completely cover the contact area between the active fixed wheel 18 and the cylindrical silicon nitride material 40 when the end of the electric cylinder 28 is lowered.

[0043] When the present invention is used, the device is connected to a power source, and the specifications of the appropriate driven fixed wheel 10, the active fixed wheel 18 and the clamping claw plate 34 are selected according to the outer diameter of the cylindrical silicon nitride material 40 to be detected. When replacing the driven fixed wheel 10 and the active fixed wheel 18, the locking sleeve 19 is rotated to remove the locking sleeve 19 through the threaded engagement with the fixed shaft 9 and the rotating shaft 12 respectively, and the existing driven fixed wheel 10 and the active fixed wheel 18 are removed, and replaced with the driven fixed wheel 10 and the active fixed wheel 18 of appropriate specifications, and then the locking sleeve 19 is rotated in the opposite direction to make it engage with the fixed shaft 9 and the rotating shaft 12 again. When replacing the clamping claw plate 34, the clamping rod 35 is pulled outward to disengage its end from the clamping groove 33, and the clamping claw plate 34 is pulled downward to drive the connecting column 32 After that, the clamping plate 34 and the connecting column 32 of suitable specifications are taken out from the slide groove 30, and then the grip on the clamping rod 35 is released, so that the upper limit portion 41 is reset under the elastic force of the second spring 42, and the clamping rod 35 is driven to re-enter the clamping groove 33 on the connecting column 32. Then, the cylindrical silicon nitride material 40 is placed into one of the placement grooves 5 through the feeding mechanism, and is limited by the active fixed wheel 18 and the driven fixed wheel 10 nearby. At the same time, the rotating mechanism is controlled by the controller to drive the material transfer plate 4 to move a certain angle, so that the next placement groove 5 is directly under the feeding mechanism. After that, when the cylindrical silicon nitride material 40 moves to the detection camera 38 with the material transfer plate 4, the micro motor 22 there is started to work through the controller. The micro motor 22 drives the active shaft 23 to rotate, and drives the rotating shaft 12 to rotate through the pulley 24 and belt 25 on it, thereby driving the active fixed wheel 18 on it to rotate, and drives the cylindrical silicon nitride material 40 to rotate slowly through the friction between it and the cylindrical silicon nitride material 40, until the cylindrical silicon nitride material 40 rotates completely. During this process, the detection camera 38 continuously detects and photographs the three outer surfaces of the cylindrical silicon nitride material 40, and transmits the picture to the computer, and calculates whether there are surface defects through software. After the detection is completed, the cylindrical silicon nitride material 40 continues to move and rotate with the transfer plate 4 to the bottom of the clamp seat 29. At this time, the controller controls the electric cylinder 28 to work, and the electric cylinder 28 drives the clamp seat 29 to be lowered as a whole. When the clamp below it When the part 43 contacts the cylindrical silicon nitride material 40, it will push the cylindrical silicon nitride material 40 to move toward the side close to the micro motor 22. At this time, the cylindrical silicon nitride material 40 pushes the active fixed wheel 18 to make the rotating shaft 12 move in the strip groove 11 and drive the base 13 to compress the first spring 17. At this time, the cylindrical silicon nitride material 40 is pushed to move to a position where it is not in contact with the driven fixed wheel 10. At this time, it is completely contacted and constrained by the clamping part 43. Then the electric cylinder 28 drives the clamping claw plate 34 to move upward, and drives it to move upward through the constraint of the clamping part 43 on the cylindrical silicon nitride material 40, until the clamping part 43 is no longer in contact with the active fixed wheel 18, it will be pushed to reset under the elastic force of the first spring 17, and then the transfer motor 27 is controlled to work by the controller.Drive the rotating plate 26 and the clamping seat 29 to rotate to another area for material dropping.

[0044] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A silicon nitride ceramic material surface defect detection device, characterized in that: include: A main engine base (1), a detection base (2) being arranged on the right side of the main engine base (1), and a transfer bracket (3) being fixed on the rear side of the main engine base (1); A material shifting motion assembly, the material shifting motion assembly comprising a material shifting plate (4) arranged on a main frame (1), a placement groove (5) and a transverse groove (6) being provided on the top of the material shifting plate (4), adjacent transverse grooves (6) being connected to the placement grooves (5), the placement grooves (5) and the transverse grooves (6) being both distributed in a circumference, a pad (7) being fixedly connected to the lower side of the placement groove (5), a triangular fixing seat (8) being fixedly connected to the top of the material shifting plate (4) and located above the placement groove (5), the top of the triangular fixing seat (8) being fixedly connected to the adjacent two sides thereof. A fixed shaft (9) is connected, and a driven fixed wheel (10) is rotatably connected to the outer side of the fixed shaft (9). A strip groove (11) is opened on the other side of the triangular fixed seat (8), and a rotating shaft (12) is inserted in the strip groove (11). The bottom of the triangular fixed seat (8) is slidably connected to a base (13), and a guide sleeve (14) is fixedly connected under the base (13). The rotating shaft (12) is rotatably connected in an adjacent guide sleeve (14). A vertical plate (15) is also fixedly connected to one side of the base (13). The triangular fixed seat (8) ) is also fixedly connected to a limit plate (16) at the bottom of the side close to the base (13), a first spring (17) is arranged between the limit plate (16) and the vertical plate (15), and the two ends of the first spring (17) are respectively fixedly connected to the adjacent sides of the limit plate (16) and the vertical plate (15), an active fixing wheel (18) is fixedly connected to the outer upper side of the rotating shaft (12), a locking sleeve (19) is threadedly connected to the outer sides of the top ends of the rotating shaft (12) and the fixed shaft (9), and a triangularly distributed fixing wheel (18) is fixedly connected to the triangular fixing seat (8). A fixed frame (20), wherein a motor fixing plate (21) is fixedly connected to one of the fixed frames (20), a micro motor (22) is fixedly connected to the motor fixing plate (21), a driving shaft (23) is rotatably connected between the motor fixing plate (21) and the triangular fixing seat (8), one end of the driving shaft (23) is fixedly connected to the output end of the micro motor (22), a pulley (24) is fixedly connected to the outer lower side of the driving shaft (23) and the rotating shaft (12), and a belt (25) is tensionedly arranged between the two pulleys (24); It also includes a detection assembly, the detection assembly including a C-shaped frame (37) fixedly connected to the detection seat (2), the top, bottom and side walls of the C-shaped frame (37) are all fixedly connected to detection cameras (38), and by providing three groups of detection cameras (38), three surfaces of the cylindrical silicon nitride material (40) can be synchronously detected at the same time; The pad (7) is provided with a butterfly groove (39), and the two side walls of the opening of the butterfly groove (39) are coplanar with the two side walls of the adjacent transverse groove (6). The butterfly groove (39) can support the cylindrical silicon nitride material (40) while exposing most of the bottom area of ​​the cylindrical silicon nitride material (40), so as to be detected by the detection camera (38) below it.

2. The silicon nitride ceramic material surface defect detection device according to claim 1, characterized in that: The material taking assembly also includes a rotating plate (26) rotatably connected to the top of the transfer bracket (3), a transfer motor (27) being fixedly connected to the bottom of the transfer bracket (3), an output end of the transfer motor (27) being fixedly connected to the rotating plate (26), electric cylinders (28) being fixedly connected to the front and rear sides of the top of the rotating plate (26), a clamping seat (29) being fixedly connected to the output end of the electric cylinder (28), a sliding groove (30) being provided at the bottom of the clamping seat (29), and a groove (30) being provided on one side of the clamping seat (29). A step groove (31), a connecting column (32) is slidably connected in the slide groove (30), a clamping groove (33) is provided on the side wall of the connecting column (32), a clamping claw plate (34) is fixedly connected to the bottom of the connecting column (32), a clamping rod (35) is slidably connected in the step groove (31), a baffle (36) is fixedly connected to the outside of the step groove (31), one end of the clamping rod (35) passes through one side of the baffle (36) and extends to the outside thereof, and a second spring (42) is also sleeved on the outside of the clamping rod (35).

3. The silicon nitride ceramic material surface defect detection device according to claim 2, characterized in that: A rotating mechanism is arranged inside the main engine base (1), and an output end of the rotating mechanism is connected to a bottom connecting shaft of the material transfer tray (4).

4. The silicon nitride ceramic material surface defect detection device according to claim 3, characterized in that: A cylindrical silicon nitride material (40) is placed in the placement groove (5), the bottom of the cylindrical silicon nitride material (40) abuts against an adjacent pad (7), and the outer wall of the cylindrical silicon nitride material (40) abuts against an adjacent driven fixed wheel (10) and an active fixed wheel (18), respectively.

5. The silicon nitride ceramic material surface defect detection device according to claim 4, characterized in that: A limiting portion (41) is fixedly connected to the middle of the outer side of the clamping rod (35), the outer diameter of the limiting portion (41) is adapted to the maximum inner diameter of the stepped groove (31), and the two ends of the second spring (42) are respectively in contact with the limiting portion (41) and the adjacent sides of the baffle (36).

6. The silicon nitride ceramic material surface defect detection device according to claim 5, characterized in that: A rounded corner is provided on one side of the clamping rod (35) close to the connecting column (32), and friction grooves are provided on the outer side of the other side of the clamping rod (35) and are distributed in a circumferential manner.

7. The silicon nitride ceramic material surface defect detection device according to claim 6, characterized in that: A clamping portion (43) is fixedly connected to the bottom of the clamping claw plate (34), and the inner diameter of the clamping portion (43) is adapted to the outer diameter of the cylindrical silicon nitride material (40) placed in the placement groove (5).

8. The silicon nitride ceramic material surface defect detection device according to claim 7, characterized in that: The axis of the clamping portion (43) and the cylindrical silicon nitride material (40) placed in the adjacent placement groove (5) below it are not colinear.

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