Detection device and method for efficiently, automatically and comprehensively detecting cracks on surface of false tooth

Abstract

The invention discloses a device and a method for efficiently, automatically and comprehensively detecting surface cracks of false teeth, and relates to the technical field of surface crack detection of false teeth. The rotary conveying assembly is arranged on the workbench and used for conveying false teeth, and the automatic detecting and discharging assembly is arranged on the workbench and used for automatically detecting cracks on the surfaces of the false teeth, automatically removing unqualified products and automatically collecting qualified products; the automatic detecting and discharging assembly comprises a vertical plate fixedly arranged on the workbench, a horizontally-arranged CCD lens is fixedly arranged at the left end of the support, a waste basket and a finished product basket are placed on the top surface of the first connecting plate and the top surface of the second connecting plate respectively, and an auxiliary detecting assembly used for jacking false teeth and driving the false teeth to rotate automatically is arranged on the third connecting plate. The artificial tooth surface crack detection device has the beneficial effects that the working intensity of artificial tooth detection by workers is greatly reduced, and the detection efficiency of artificial tooth surface cracks is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of surface crack detection of dentures, in particular to a detection device and method for efficiently and automatically detecting surface cracks of dentures in all directions. Background Art

[0002] Dentures, also known as "false teeth", are made of ceramic materials, with high strength and durability. When there are problems with the teeth in a patient's oral cavity, the dentures are installed at the positions of the problematic teeth, enabling the patient to restore the chewing function. Dentures are classified into complete dentures, implant dentures, etc. Among them, implant dentures can replace single problematic teeth. When in use, a metal implant is first installed at the root of the tooth in the oral cavity, and then the denture is installed on the top of the implant to achieve the purpose of replacing a single problematic tooth and thus restore the patient's chewing function.

[0003] The structure of a certain specification of denture is as Figures 1 - 2 shown. The bottom surface of the denture is a plane, and a tapered hole is opened on the bottom surface of the denture for connecting with the metal implant. When a batch of dentures as Figures 1 - 2 shown are produced in the workshop, the process requires detecting the surfaces of each denture, that is, detecting whether there are cracks on the surface of the denture. Because the existence of cracks will undoubtedly affect the strength of the entire denture, it is necessary to detect the surface cracks of the denture before leaving the factory. After the detection, the worker removes the unqualified products with cracks on the surface into the waste basket, and puts the qualified products without cracks on the surface into the finished product basket.

[0004] The method for a certain workshop to detect the surfaces of each denture is as follows: S1. The worker takes out a denture to be detected from the detection basket; S2. First, the taken-out denture is supported on the top surface of the turntable; then the worker aligns the CCD lens with the left side of the denture, as Figure 3 shown; then the power motor connected to the turntable is turned on, and the power motor drives the turntable to rotate uniformly. The turntable drives the denture placed on it to rotate synchronously. The rotation direction of the denture is as Figure 3 indicated by the arrow in. During the rotation, the CCD lens detects the surface of the denture in real time. If the CCD lens detects that there are cracks on the surface of the denture, it is determined that the denture is an unqualified product. At this time, the CCD lens sends an electrical signal to the controller, and the controller sends an alarm signal to notify the worker to pick the unqualified product into the waste basket; If after the denture rotates 360°, the CCD lens does not detect cracks on the surface of the denture, it is determined that the denture is a qualified product. The CCD lens does not send an electrical signal to the controller, and then the worker puts the qualified product into the finished product basket, thus realizing the surface detection of one denture; S3. The worker repeats the operations in steps S1 - S2, and the surface inspection of each denture in the workshop can be achieved.

[0005] However, although this method can inspect the surfaces of each denture in the workshop, in actual operation, the following technical defects still exist: I. In steps S1 - S2, the worker needs to first take out a denture to be inspected from the inspection basket, then place the denture on the top surface of the turntable, and then start the power motor to rotate the denture, so as to inspect the surface of the denture in real time through the CCD lens; and the entire inspection is manually completed by the worker, which not only increases the working intensity of the worker for denture inspection, but also takes a long time to complete the surface inspection of a single denture, thus taking a long time to complete the inspection of all dentures in the workshop, and further reducing the inspection efficiency of the surface cracks of the dentures.

[0006] II. In step S2, when the denture to be inspected is a non - conforming product, the worker needs to manually pick the non - conforming product into the waste basket to complete the rejection of the non - conforming product. When the denture to be inspected is a conforming product, the worker also needs to manually put the conforming product into the finished product basket to complete the collection of the conforming product; among them, whether it is rejecting non - conforming products or collecting conforming products, it needs to be manually completed by the worker, which not only increases the working intensity of the worker for denture inspection, but also takes a long time to complete the surface inspection of a single denture, thus taking a long time to complete the inspection of all dentures in the workshop, and further reducing the inspection efficiency of the surface cracks of the dentures.

[0007] Therefore, there is an urgent need for a detection device and method that can greatly reduce the working intensity of workers for denture inspection and greatly improve the inspection efficiency of surface cracks of dentures. Summary of the Invention

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a highly efficient automatic all - round detection device and method for detecting surface cracks of dentures that can greatly reduce the working intensity of workers for denture inspection and greatly improve the inspection efficiency of surface cracks of dentures.

[0009] The purpose of the present invention is achieved through the following technical solutions: A highly efficient automatic all - round detection device for detecting surface cracks of dentures, which includes a workbench, a rotary conveying component arranged on the workbench for conveying dentures, and an automatic detection and blanking component arranged on the workbench for automatically detecting cracks on the surface of dentures, automatically rejecting non - conforming products, and automatically collecting conforming products. The automatic detection and blanking component is located on the right side of the rotary conveying component; The automatic detection and blanking assembly includes a vertical plate fixed on the workbench. On the left end face of the vertical plate, a bracket, a first connecting plate, a second connecting plate, and a third connecting plate are successively fixed from top to bottom. A horizontally arranged CCD lens is fixed at the left end of the bracket. A waste basket and a finished product basket are respectively placed on the top surfaces of the first connecting plate and the second connecting plate. An auxiliary detection component for jacking up the denture and driving the denture to rotate automatically is arranged on the third connecting plate; A first horizontal cylinder and a second horizontal cylinder are fixed on the right end face of the vertical plate. The piston rod of the first horizontal cylinder penetrates the vertical plate to the left, and a movable plate is fixed on the extending end. A receiving box located directly above the waste basket is hinged to the bottom surface of the movable plate through a hinge seat. A U-shaped groove is formed on the bottom surface of the left end of the receiving box. A pressing cylinder is fixed on the top surface of the movable plate. The piston rod of the pressing cylinder penetrates the movable plate downward, and a pressing head is fixed on the extending end. A tension spring is fixed between the receiving box and the movable plate. Under the elastic force of the tension spring, the receiving box abuts against the pressing head; The piston rod of the second horizontal cylinder penetrates the vertical plate to the left, and a clamping cylinder located between the waste basket and the finished product basket is fixed on the extending end. The clamping head of the clamping cylinder faces left; The detection device further includes a strip-shaped carrier for loading multiple dentures. The strip-shaped carrier includes a carrier body and an L-shaped plate. The horizontal plate of the L-shaped plate is connected to the bottom surface of the carrier body. A horizontal spring is fixed between the vertical plate of the L-shaped plate and the carrier body. Under the elastic force of the horizontal spring, the vertical plate of the L-shaped plate abuts against the right end face of the carrier body. A rod is fixed on the right end face of the vertical plate of the L-shaped plate; A plurality of receiving holes for accommodating dentures are formed on the top surface of the carrier body along its length direction. A plurality of straight holes respectively communicating with the receiving holes are formed in the L-shaped plate. A plurality of blanking holes respectively offset from the receiving holes are also formed in the L-shaped plate; A rectangular blind groove located on the left side of the L-shaped plate is formed on the bottom surface of the carrier body.

[0010] The auxiliary detection component includes a driving motor and two guide rails fixed on the top surface of the third connection. A gear is connected to the output shaft of the driving motor. A floating plate located above the gear is slidably installed between the two guide rails. A servo motor is fixed on the top surface of the floating plate. A rotating shaft, a thin rod, and a tapered head are successively connected to the output shaft of the servo motor. A rack is fixed on the bottom surface of the floating plate. The rack meshes with the gear.

[0011] The tapered head is matched with the tapered hole of the denture.

[0012] The width of the U-shaped groove of the receiving box is equal to the diameter of the thin rod.

[0013] The distance between every two adjacent receiving holes in the carrier body is equal. The distance between every two adjacent straight holes in the L-shaped plate is equal. The aperture of the straight hole is smaller than the aperture of the receiving hole.

[0014] The rotary conveying assembly includes a stepping motor fixed on the workbench and a turntable fixed on the output shaft of the stepping motor. A plurality of conveying cylinders are fixed on the top surface of the turntable along its circumferential direction. The piston rods of the respective conveying cylinders all extend outside the turntable, and a cushion block is fixed on the extending end. A rectangular insertion block is fixed on the top surface of the cushion block.

[0015] The plurality of conveying cylinders are evenly distributed on the turntable.

[0016] The detection device further includes a controller, and the controller is electrically connected to the first horizontal cylinder, the second horizontal cylinder, the pressing cylinder, the conveying cylinder, the stepping motor, the driving motor, the servo motor, and the CCD lens via signal lines.

[0017] An efficient automatic all-round detection method for detecting surface cracks of dentures includes the following steps: S1. Pre-load a plurality of dentures to be detected in a plurality of strip trays respectively. The specific operation steps are as follows: S11. The worker takes out a strip tray and places the strip tray flat on the tabletop of the table. Then, a denture to be detected is pre-placed in each receiving hole of the tray body of the strip tray. At this time, the bottom surface of the denture is supported on the top surface of the L plate of the strip tray, and the tapered hole of the denture just communicates with the straight hole, thereby realizing pre-loading a plurality of dentures to be detected in one strip tray. S12. The worker repeats the operation of step S11 multiple times, and thus a plurality of dentures to be detected can be pre-loaded in a plurality of strip trays respectively. S2. Install the plurality of strip trays onto the respective rectangular insertion blocks of the rotary conveying assembly respectively. The specific operation steps are as follows: S21. The worker inserts the rectangular blind groove of the first strip tray from top to bottom onto the first rectangular insertion block of the rotary conveying assembly, and supports the bottom surface of the left end of the strip tray on the cushion block, thereby realizing the installation of a strip tray on the first rectangular insertion block of the rotary conveying assembly. S22. The worker repeats the operation of step S21 multiple times, and thus the plurality of strip trays can be installed onto the respective rectangular insertion blocks of the rotary conveying assembly respectively, and further realizes the feeding of a plurality of dentures to be detected. S3. Perform surface detection on all the dentures in the first strip tray. The specific operation steps are as follows: S31. Control the stepping motor of the rotary conveying assembly to start. The stepping motor drives the turntable to rotate on the horizontal plane, and the turntable drives the respective conveying cylinders thereon to rotate on the horizontal plane. When the first strip tray faces the automatic detection and blanking assembly, the controller controls the stepping motor to stop. S32. Control the piston rod of the conveying cylinder to extend to the right. The piston rod drives the cushion block and the rectangular insertion block to move to the right synchronously. The cushion block drives the strip-shaped carrier plate thereon to move to the right, and the strip-shaped carrier plate drives each denture therein to move to the right synchronously. When the first denture moves directly above the conical head of the automatic detection and blanking assembly, the controller controls the conveying cylinder to close. S33. Control the drive motor of the automatic detection and blanking assembly to rotate clockwise. The drive motor drives the gear to rotate clockwise, and the gear drives the rack to move upward. The rack drives the floating plate to move upward along the guide rail. The floating plate drives the servo motor, the rotating shaft, the thin rod and the conical head to move upward synchronously. The conical head passes upward through the straight hole and inserts into the conical hole of the first denture. As the conical head continues to move upward, the conical head ejects the first denture from the strip-shaped carrier plate. When the lifted denture moves to the right side of the CCD lens, the controller controls the drive motor to close. At this time, the first denture enters the surface detection station. S34. Control the servo motor of the automatic detection and blanking assembly to start. The servo motor drives the rotating shaft to rotate, and the rotating shaft drives the thin rod and the conical head to rotate synchronously. The conical head drives the first denture to rotate synchronously. During the rotation process, the CCD lens detects the surface of the denture in real time. If the CCD lens detects that there are cracks on the surface of the denture, it is determined that the denture is a defective product. At this time, the CCD lens sends an electrical signal to the controller. The steps for the controller to automatically remove the defective product into the waste basket are as follows: S341. The controller controls the piston rod of the first horizontal cylinder to extend to the left. The piston rod drives the movable plate to move to the left. The movable plate drives the hinge seat, the pressing cylinder and the receiving box to move to the left synchronously. When the piston rod of the first horizontal cylinder is fully extended, the U-shaped groove of the receiving box just sleeves outside the thin rod, and the defective product is inside the receiving box. S342. The controller controls the drive motor of the automatic detection and blanking assembly to rotate counterclockwise. The drive motor drives the gear to rotate counterclockwise, and the gear drives the rack to move downward, thereby driving the floating plate to move downward. The floating plate drives the thin rod and the conical head to move downward synchronously. When the conical head moves downward, the defective product falls into the receiving box. S343. Control the piston rod of the first horizontal cylinder to retract to the right. The piston rod drives the movable plate to move to the right. The movable plate drives the hinge seat, the downward pressure cylinder and the material receiving box to move to the right synchronously. The material receiving box drives the unqualified products falling into it to move synchronously. When the material receiving box moves right above the waste basket, the controller controls the first horizontal cylinder to close. Then the controller controls the piston rod of the downward pressure cylinder to extend downward. The piston rod drives the pressure head to move downward. The pressure head presses downward against the material receiving box. The material receiving box rotates downward around the hinge seat, and the material receiving box pulls the tension spring downward. When the material receiving box is in an inclined state, the unqualified products in the material receiving box slide into the waste basket, thus realizing the rejection of unqualified products into the waste basket and further realizing the surface inspection of the first denture in the strip tray. S35. Control the piston rod of the conveying cylinder to extend to the right to drive the strip tray to move to the right. The strip tray drives each denture in it to move to the right synchronously. When the second denture moves right above the conical head of the automatic detection and blanking assembly, the controller controls the conveying cylinder to close. S36. Control the drive motor to rotate clockwise. The drive motor drives the gear to rotate clockwise. The conical head ejects the second denture from the strip tray. When the ejected denture moves to the right of the CCD lens, the controller controls the drive motor to close. At this time, the second denture enters the surface inspection station. S37. Control the servo motor to start to make the conical head rotate. The conical head drives the second denture to rotate synchronously. During the rotation process, the CCD lens detects the surface of the denture in real time. If the CCD lens detects that there are cracks on the surface of the second denture, the controller executes the operations of steps S341 - S343 to reject the unqualified products into the waste basket. If the CCD lens detects that there are cracks on the surface of the denture, it is determined that the denture is a qualified product. At this time, the CCD lens sends an electrical signal to the controller to control the drive motor to rotate counterclockwise. The drive motor drives the gear to rotate counterclockwise. The gear drives the rack to move downward. The rack drives the floating plate and the conical head to move downward synchronously. The conical head drives the qualified product to move downward synchronously. When the conical head passes downward through the strip tray, the qualified product enters the strip tray, thus realizing the surface inspection of the second denture in the strip tray. S38. Repeat the operations of steps S35 - S37 in this way to complete the surface inspection of all the dentures in the first strip tray. At this time, all the unqualified products have been rejected into the waste basket, and all the qualified products still remain in the first strip tray. At the same time, the rod on the first strip tray just enters the chuck of the clamping cylinder. The steps for the controller to collect all the qualified products remaining in the first strip tray into the finished product basket are: S381. The controller controls the clamping cylinder to start. The clamping cylinder drives the chuck to close. The chuck clamps and fixes the rod. S381. Control the piston rod of the second horizontal cylinder to retract to the right. The piston rod drives the clamping cylinder to move to the right. The clamping cylinder drives the clamped rod to move to the right. The rod drives the L plate of the strip tray to move to the right. The L plate drives each blanking hole inside it to move to the right synchronously. And the L plate pulls the horizontal spring to the right. When the piston rod of the second horizontal cylinder retracts to the set stroke, each blanking hole in the L plate communicates with each receiving hole in the strip tray respectively. At this time, each qualified product in the strip tray falls into the finished product basket under its own gravity, thus realizing the collection of all qualified products in the first strip tray into the finished product basket; S383. After all the qualified products in the first strip tray are collected into the finished product basket, control the clamping cylinder to close and the chuck to release the rod. At this time, under the elastic restoring force of the horizontal spring, the L plate resets; S4. The worker repeats the operation of step S3 many times to perform surface detection on all dentures in each strip tray.

[0018] The present invention has the following advantages: greatly reducing the working intensity of workers for denture detection and greatly improving the detection efficiency of surface cracks of dentures. Description of the Drawings

[0019] Figure 1 is a structural schematic diagram of a denture; Figure 2 is Figure 1 's main sectional schematic diagram; Figure 3 is a schematic diagram of aligning the CCD lens with the left side of the denture; Figure 4 is a structural schematic diagram of the present invention; Figure 5 is Figure 4 's main sectional schematic diagram; Figure 6 is a structural schematic diagram of the automatic detection and blanking assembly; Figure 7 is Figure 6 's rear view; Figure 8 is Figure 6 's main sectional schematic diagram; Figure 9 is a structural schematic diagram of a strip tray; Figure 10 is Figure 9 's main sectional schematic diagram; Figure 11 is a structural schematic diagram of a rotary conveying assembly; Figure 12 is Figure 11 's main sectional schematic diagram; Figure 13 Schematic diagram of pre - placing a denture to be detected in each accommodation hole of a strip tray; Figure 14 Schematic diagram of respectively installing multiple strip trays onto respective rectangular inserts of a rotary conveying assembly; Figure 15 Schematic diagram of the first denture moving right above the conical head of the automatic detection and blanking assembly; Figure 16 Schematic diagram of the first denture entering the surface detection station; Figure 17 Schematic diagram of non - conforming products being in the receiving box; Figure 18 Schematic diagram of non - conforming products falling into the receiving box; Figure 19 Schematic diagram of when the receiving box moves right above the waste basket; Figure 20 Schematic diagram of non - conforming products in the receiving box sliding into the waste basket; Figure 21 Schematic diagram of the second denture moving right above the conical head of the automatic detection and blanking assembly; Figure 22 Schematic diagram of the second denture entering the surface detection station; Figure 23 Schematic diagram of conforming products entering the strip tray; Figure 24 Schematic diagram of the rod on the first strip tray entering the chuck of the clamping cylinder; Figure 25 Schematic diagram of the chuck of the clamping cylinder clamping and fixing the rod; Figure 26 Schematic diagram of each conforming product in the strip tray falling into the finished product basket; In the figure: 1 - Denture, 2 - Conical hole, 3 - Turntable, 4 - CCD lens; 5 - Workbench, 6 - Rotary conveying assembly, 7 - Automatic detection and blanking assembly, 8 - Vertical plate, 9 - Bracket, 10 - First connecting plate, 11 - Second connecting plate, 12 - Waste basket, 13 - Finished product basket; 14 - First horizontal cylinder, 15 - Second horizontal cylinder, 16 - Movable plate, 17 - Hinge seat, 18 - Receiving box, 19 - U - shaped groove, 20 - Pressing cylinder, 21 - Pressing head, 22 - Tensile spring, 23 - Clamping cylinder, 24 - Chuck; 25 - Strip tray, 26 - Tray body, 27 - L - shaped plate, 28 - Horizontal spring, 29 - Rod, 30 - Accommodation hole, 31 - Straight hole, 32 - Blank - down hole, 33 - Rectangular blind groove; 34 - drive motor, 35 - gear, 36 - floating plate, 37 - servo motor, 38 - thin rod, 40 - rack; 41 - stepper motor, 42 - turntable, 43 - conveying cylinder, 44 - cushion block, 45 - rectangular insert block; 46 - defective product, 47 - qualified product. Detailed implementation manner

[0020] The present invention will be further described below in conjunction with the accompanying drawings. The protection scope of the present invention is not limited to the following: As Figures 4 - 8 shown, an efficient and automatic all - round detection device for detecting surface cracks of dentures includes a workbench 5, a rotary conveying assembly 6 arranged on the workbench 5 for conveying the denture 1, and an automatic detection and blanking assembly 7 arranged on the workbench 5 for automatically detecting cracks on the surface of the denture 1, automatically removing defective products, and automatically collecting qualified products. The automatic detection and blanking assembly 7 is located on the right side of the rotary conveying assembly 6.

[0021] The automatic detection and blanking assembly 7 includes a vertical plate 8 fixed on the workbench 5. A support 9, a first connecting plate 10, a second connecting plate 11, and a third connecting plate are sequentially fixed on the left end surface of the vertical plate 8 from top to bottom. A horizontally arranged CCD lens 4 is fixed at the left end of the support 9. A waste basket 12 and a finished product basket 13 are respectively placed on the top surfaces of the first connecting plate 10 and the second connecting plate 11. An auxiliary detection assembly for lifting the denture 1 and driving the denture 1 to rotate by itself is arranged on the third connecting plate; the auxiliary detection assembly includes a drive motor 34 fixed on the top surface of the third connection and two guide rails. A gear 35 is connected to the output shaft of the drive motor 34. A floating plate 36 located above the gear 35 is slidably installed between the two guide rails. A servo motor 37 is fixed on the top surface of the floating plate 36. A rotating shaft, a thin rod 38, and a tapered head are sequentially connected to the output shaft of the servo motor 37. The tapered head is matched with the tapered hole 2 of the denture 1. A rack 40 is fixed on the bottom surface of the floating plate 36, and the rack 40 meshes with the gear 35.

[0022] A first horizontal cylinder 14 and a second horizontal cylinder 15 are fixedly arranged on the right end face of the vertical plate 8. The piston rod of the first horizontal cylinder 14 penetrates the vertical plate 8 to the left, and a movable plate 16 is fixedly arranged on the extending end. A receiving box 18 located directly above the waste basket 12 is hinged to the bottom surface of the movable plate 16 through a hinge seat 17. A U-shaped groove 19 is formed on the bottom surface of the left end of the receiving box 18. A pressing cylinder 20 is fixedly arranged on the top surface of the movable plate 16. The piston rod of the pressing cylinder 20 penetrates the movable plate 16 downward, and a pressing head 21 is fixedly arranged on the extending end. A tension spring 22 is fixedly arranged between the receiving box 18 and the movable plate 16. Under the elastic force of the tension spring 22, the receiving box 18 abuts against the pressing head 21. The piston rod of the second horizontal cylinder 15 penetrates the vertical plate 8 to the left, and a clamping cylinder 23 located between the waste basket 12 and the finished product basket 13 is fixedly arranged on the extending end. The clamping head 24 of the clamping cylinder 23 faces left. The width of the U-shaped groove 19 of the receiving box 18 is equal to the diameter of the thin rod 38.

[0023] As Figures 9 - 10 shown, the detection device further includes a strip-shaped carrier tray 25 for loading a plurality of dentures 1. The strip-shaped carrier tray 25 includes a carrier tray body 26 and an L-shaped plate 27. The horizontal plate of the L-shaped plate 27 is connected to the bottom surface of the carrier tray body 26. A horizontal spring 28 is fixedly arranged between the vertical plate of the L-shaped plate 27 and the carrier tray body 26. Under the elastic force of the horizontal spring 28, the vertical plate of the L-shaped plate 27 abuts against the right end face of the carrier tray body 26. A rod member 29 is fixedly arranged on the right end face of the vertical plate of the L-shaped plate 27. The distance between every two adjacent receiving holes 30 in the carrier tray body 26 is equal. The distance between every two adjacent straight holes 31 in the L-shaped plate 27 is equal. The aperture of the straight hole 31 is smaller than the aperture of the receiving hole 30. A plurality of receiving holes 30 for accommodating the dentures 1 are formed on the top surface of the carrier tray body 26 along its length direction. A plurality of straight holes 31 respectively communicating with the receiving holes 30 are formed in the L-shaped plate 27. A plurality of blanking holes 32 respectively offset from the receiving holes 30 are also formed in the L-shaped plate 27. A rectangular blind groove 33 located on the left side of the L-shaped plate 27 is formed on the bottom surface of the carrier tray body 26.

[0024] As Figures 11 - 12 shown, the rotary conveying assembly 6 includes a stepping motor 41 fixedly arranged on the workbench 5 and a turntable 42 fixedly arranged on the output shaft of the stepping motor 41. A plurality of conveying cylinders 43 are fixedly arranged on the top surface of the turntable 42 along its circumferential direction. The plurality of conveying cylinders 43 are evenly distributed on the turntable 42. The piston rods of the respective conveying cylinders 43 all extend outside the turntable 42, and a cushion block 44 is fixedly arranged on the extending end. A rectangular insert block 45 is fixedly arranged on the top surface of the cushion block 44.

[0025] The detection device further includes a controller, which is electrically connected to the first horizontal cylinder 14, the second horizontal cylinder 15, the downward pressing cylinder 20, the conveying cylinder 43, the stepping motor 41, the driving motor 34, the servo motor 37, and the CCD lens 4 through signal lines. The controller can control the extension or retraction of the pistons of the first horizontal cylinder 14, the second horizontal cylinder 15, the downward pressing cylinder 20, and the conveying cylinder 43. At the same time, it can also control the start or stop of the stepping motor 41, the driving motor 34, and the servo motor 37. The CCD lens 4 can detect whether there are cracks on the surface of the denture 1. The CCD lens 4 sends an electrical signal to the controller, and the controller then controls the automatic detection and blanking component 7 to act to reject unqualified products or collect qualified ones.

[0026] An efficient and automated all-round detection method for detecting cracks on the surface of dentures includes the following steps: S1. Pre-load multiple dentures to be detected in multiple strip trays 25. The specific operation steps are as follows: S11. The worker takes out a strip tray 25 as shown in Figures 9 - 10 and places the strip tray 25 flat on the tabletop. Then, a denture 1 to be detected is pre-placed in each receiving hole 30 of the tray body 26 of the strip tray 25 as shown in Figures 1 - 2 . As shown in Figure 13 , at this time, the bottom surface of the denture 1 is supported on the top surface of the L plate 27 of the strip tray 25, and the tapered hole 2 of the denture 1 just communicates with the straight hole 31, thus realizing pre-loading multiple dentures 1 to be detected in one strip tray 25. S12. The worker repeats the operation of step S11 multiple times, and multiple dentures 1 to be detected can be pre-loaded in multiple strip trays 25. S2. Install multiple strip trays 25 respectively on the respective rectangular inserts 45 of the rotary conveying component 6. The specific operation steps are as follows: S21. The worker inserts the rectangular blind groove 33 of the first strip tray 25 from top to bottom onto the first rectangular insert 45 of the rotary conveying component 6, and supports the bottom surface of the left end of the strip tray 25 on the spacer 44, thus realizing the installation of one strip tray 25 on the first rectangular insert 45 of the rotary conveying component 6. S22. The worker repeats the operation of step S21 multiple times, and multiple strip trays 25 can be respectively installed on the respective rectangular inserts 45 of the rotary conveying component 6. As shown in Figure 14 , thus realizing the feeding of multiple dentures 1 to be detected. S3. Perform surface detection on all the dentures 1 in the first strip tray 25. The specific operation steps are as follows: S31. Control the stepping motor 41 of the rotary conveying assembly 6 to start. The stepping motor 41 drives the turntable 42 to rotate on the horizontal plane. The turntable 42 drives the respective conveying cylinders 43 thereon to rotate on the horizontal plane. When the first strip-shaped carrier 25 faces the automatic detection and blanking assembly 7, as Figure 14 shown, the controller controls the stepping motor 41 to turn off; S32. Control the piston rod of the conveying cylinder 43 to extend to the right. The piston rod drives the cushion block 44 and the rectangular insert block 45 to move synchronously to the right. The cushion block 44 drives the strip-shaped carrier 25 thereon to move to the right. The strip-shaped carrier 25 drives the respective dentures 1 therein to move to the right. When the first denture 1 moves directly above the conical head of the automatic detection and blanking assembly 7, as Figure 15 shown, the controller controls the conveying cylinder 43 to turn off; S33. Control the drive motor 34 of the automatic detection and blanking assembly 7 to rotate clockwise. The drive motor 34 drives the gear 35 to rotate clockwise. The gear 35 drives the rack 40 to move upward. The rack 40 drives the floating plate 36 to move upward along the guide rail. The floating plate 36 drives the servo motor 37, the rotating shaft, the thin rod 38 and the conical head to move upward synchronously. The conical head passes upward through the straight hole 31 and inserts into the conical hole 2 of the first denture 1. As the conical head continues to move upward, the conical head ejects the first denture 1 from the strip-shaped carrier 25. When the lifted denture 1 moves to the right side of the CCD lens 4, the controller controls the drive motor 34 to turn off. At this time, the first denture 1 enters the surface detection station, as Figure 16 shown; S34. Control the servo motor 37 of the automatic detection and blanking assembly 7 to start. The servo motor 37 drives the rotating shaft to rotate. The rotating shaft drives the thin rod 38 and the conical head to rotate synchronously. The conical head drives the first denture 1 to rotate synchronously. The rotation direction is as Figure 16 shown by the arrow in. During the rotation, the CCD lens 4 detects the surface of the denture 1 in real time. If the CCD lens 4 detects that there are cracks on the surface of the denture 1, it is determined that the denture 1 is a defective product. At this time, the CCD lens 4 sends an electrical signal to the controller. The steps for the controller to automatically remove the defective product into the waste basket 12 are: S341. The controller controls the piston rod of the first horizontal cylinder 14 to extend to the left. The piston rod drives the movable plate 16 to move to the left. The movable plate 16 drives the hinge seat 17, the pressing cylinder 20 and the receiving box 18 to move synchronously to the left. When the piston rod of the first horizontal cylinder 14 is fully extended, the U-shaped groove 19 of the receiving box 18 just sleeves outside the thin rod 38, and the defective product 46 is in the receiving box 18, as Figure 17 shown; S342. The controller controls the drive motor 34 of the automatic detection and blanking assembly 7 to rotate counterclockwise. The drive motor 34 drives the gear 35 to rotate counterclockwise. The gear 35 drives the rack 40 to move downward, thereby driving the floating plate 36 to move downward. The floating plate 36 drives the thin rod 38 and the conical head to move downward synchronously. When the conical head moves downward, the defective products 46 fall into the receiving box 18, as Figure 18 shown; S343. Control the piston rod of the first horizontal cylinder 14 to retract to the right. The piston rod drives the movable plate 16 to move to the right. The movable plate 16 drives the hinge seat 17, the pressing cylinder 20 and the receiving box 18 to move to the right synchronously. The receiving box 18 drives the defective products 46 falling into it to move synchronously. When the receiving box 18 moves directly above the waste basket 12, as Figure 19 shown, the controller controls the first horizontal cylinder 14 to close. Then the controller controls the piston rod of the pressing cylinder 20 to extend downward. The piston rod drives the pressing head 21 to move downward. The pressing head 21 presses downward against the receiving box 18. The receiving box 18 rotates downward around the hinge seat 17, and the receiving box 18 pulls the tension spring 22 downward. When the receiving box 18 is in an inclined state, the defective products 46 in the receiving box 18 slide into the waste basket 12, and the sliding direction is as shown by the arrow in Fig. 20, thus realizing the rejection of the defective products 46 into the waste basket 12, and further realizing the surface detection of the first denture 1 in the strip tray 25; Among them, from the operations in steps S341 to S343, it can be seen that this detection device only needs to pass the linkage cooperation of the first horizontal cylinder 14, the pressing cylinder 20 of the automatic detection and blanking assembly 7 and the auxiliary detection assembly to automatically reject the defective products 46 into the waste basket 12. It can be seen that compared with the detection method as Figure 3 shown, this detection device does not require workers to manually reject the defective products 46 into the waste basket 12. This not only greatly reduces the working intensity of workers for denture detection, but also realizes the surface detection of a single denture 1 in a short time. Furthermore, it only takes a very short time to detect all the dentures 1 in the workshop, thus greatly improving the detection efficiency of denture surface cracks.

[0027] S35. Control the piston rod of the conveying cylinder 43 to extend to the right to drive the strip tray 25 to move to the right. The strip tray 25 drives each denture 1 in it to move to the right synchronously. When the second denture 1 moves directly above the conical head of the automatic detection and blanking assembly 7, as Figure 21 shown, the controller controls the conveying cylinder 43 to close; S36. Control the drive motor 34 to rotate clockwise. The drive motor 34 drives the gear 35 to rotate clockwise, and the conical head pushes out the second denture 1 from the strip carrier 25. When the lifted denture 1 moves to the right side of the CCD lens 4, the controller controls the drive motor 34 to turn off. At this time, the second denture 1 enters the surface inspection station, as Figure 22 shown; S37. Control the servo motor 37 to start, so that the conical head rotates. The conical head drives the second denture 1 to rotate synchronously. During the rotation, the CCD lens 4 detects the surface of the denture 1 in real time. If the CCD lens 4 detects cracks on the surface of the second denture 1, the controller executes the operations of steps S341 - S343 to reject the unqualified products into the waste basket 12; If the CCD lens 4 detects cracks on the surface of the denture 1, it is determined that the denture 1 is a qualified product 47. At this time, the CCD lens 4 sends an electrical signal to the controller to control the drive motor 34 to rotate counterclockwise. The drive motor 34 drives the gear 35 to rotate counterclockwise, and the gear 35 drives the rack 40 to move downward. The rack 40 drives the floating plate 36 and the conical head to move downward synchronously. The conical head drives the qualified product 47 to move downward synchronously. When the conical head moves downward through the strip carrier 25, the qualified product 47 enters the strip carrier 25, as Figure 23 shown, thus realizing the surface inspection of the second denture 1 in the strip carrier 25; S38. Repeat the operations of steps S35 - S37 in this way to complete the surface inspection of all the dentures 1 in the first strip carrier 25. At this time, all the unqualified products 46 have been rejected into the waste basket 12, and all the qualified products 47 still remain in the first strip carrier 25. At the same time, the rod 29 on the first strip carrier 25 just enters the chuck 24 of the clamping cylinder 23, as Figure 24 shown. The steps for the controller to collect all the qualified products 47 remaining in the first strip carrier 25 into the finished product basket 13 are: S381. The controller controls the clamping cylinder 23 to start. The clamping cylinder 23 drives the chuck 24 to close, and the chuck 24 clamps and fixes the rod 29, as Figure 25 shown; S382. Control the piston rod of the second horizontal cylinder 15 to retract to the right. The piston rod drives the clamping cylinder 23 to move to the right. The clamping cylinder 23 drives the clamped rod 29 to move to the right. The rod 29 drives the L plate 27 of the strip-shaped carrier 25 to move to the right. The L plate 27 drives each blanking hole 32 inside it to move to the right synchronously. And the L plate 27 pulls the horizontal spring 28 to the right. When the piston rod of the second horizontal cylinder 15 retracts to the set stroke, each blanking hole 32 in the L plate 27 communicates with each receiving hole 30 in the strip-shaped carrier 25 respectively. At this time, each qualified product 47 in the strip-shaped carrier 25 falls into the finished product basket 13 under its own gravity, and the falling direction is as Figure 26 shown by the arrow in, thus realizing the collection of all qualified products 47 in the first strip-shaped carrier 25 into the finished product basket 13; S383. After all the qualified products 47 in the first strip-shaped carrier 25 are collected into the finished product basket 13, control the clamping cylinder 23 to close, and the chuck 24 releases the rod 29. At this time, under the elastic restoring force of the horizontal spring 28, the L plate 27 resets; Among them, from the steps of S381 to S383, it can be seen that through the linkage cooperation of the second horizontal cylinder 15, the clamping cylinder 23 and the strip-shaped carrier 25 of this detection device, each blanking hole 32 in the L plate 27 can be linked with each receiving hole 30 in the strip-shaped carrier 25 respectively. Furthermore, all the qualified products 47 in the strip-shaped carrier 25 fall into the finished product basket 13, thereby completing the collection of all the qualified products 47 in the strip-shaped carrier 25. It can be seen that compared with the Figure 3 detection method shown, there is no need for workers to manually collect the qualified products 47 into the finished product basket 13. This not only greatly reduces the working intensity of workers for denture detection, but also realizes the surface detection of a single denture 1 in a short time. Furthermore, it only takes a very short time to detect all the dentures 1 in the workshop, further improving the detection efficiency of denture surface cracks.

[0028] S4. Workers repeat the operation of step S3 many times like this, and then they can conduct surface detection on all the dentures 1 in each strip-shaped carrier 25.

[0029] Among them, from steps S1 to S4, it can be seen that through the linkage cooperation of the rotary conveying component 6, the auxiliary detection component of the automatic detection and blanking component 7 and the strip-shaped carrier 25 of this detection device, it can continuously and automatically conduct surface detection on each denture 1 in each strip-shaped carrier 25 in turn. Compared with the Figure 3The detection method shown does not require manual surface detection of the denture 1 one by one, but realizes continuous and automatic surface detection of the denture 1. This not only greatly reduces the labor intensity of workers for denture detection, but also enables the surface detection of a single denture 1 to be completed in a short time. Furthermore, all the dentures 1 in the workshop can be detected in a very short time, thus greatly improving the detection efficiency of surface cracks of dentures.

Claims

1. A highly efficient and automated all-round detection device for denture surface cracks, characterized in that: It comprises a workbench (5), a rotary conveying assembly (6) arranged on the workbench (5) for conveying the denture (1), and an automatic detection and unloading assembly (7) arranged on the workbench (5) for automatically detecting cracks on the surface of the denture (1), automatically removing unqualified products, and automatically collecting qualified products. The automatic detection and unloading assembly (7) is located on the right side of the rotary conveying assembly (6); The automatic detection and unloading assembly (7) comprises a vertical plate (8) fixedly mounted on a workbench (5); a bracket (9), a first connecting plate (10), a second connecting plate (11) and a third connecting plate are fixedly mounted on the left end surface of the vertical plate (8) in order from top to bottom; a horizontally mounted CCD lens (4) is fixedly mounted on the left end of the bracket (9); a waste basket (12) and a finished product basket (13) are respectively placed on the top surfaces of the first connecting plate (10) and the second connecting plate (11); and an auxiliary detection assembly for lifting the denture (1) and driving the denture (1) to rotate automatically is arranged on the third connecting plate; A first horizontal cylinder (14) and a second horizontal cylinder (15) are fixedly provided on the right end surface of the vertical plate (8), a piston rod of the first horizontal cylinder (14) penetrates the vertical plate (8) to the left, and a movable plate (16) is fixedly provided on the extended end, a receiving box (18) located directly above the waste basket (12) is hingedly connected to the bottom surface of the movable plate (16) via a hinge seat (17), a U-shaped groove (19) is provided on the bottom surface of the left end of the receiving box (18), a downward pressure cylinder (20) is fixedly provided on the top surface of the movable plate (16), and the downward pressure cylinder (20) is fixedly provided on the top surface of the movable plate (16). 0) downwardly penetrates the movable plate (16), and a pressure head (21) is fixedly provided on the extended end, and a tension spring (22) is fixedly provided between the material receiving box (18) and the movable plate (16), and under the elastic force of the tension spring (22), the material receiving box (18) abuts against the pressure head (21); the piston rod of the second horizontal cylinder (15) penetrates the vertical plate (8) to the left, and a clamping cylinder (23) is fixedly provided on the extended end and is located between the waste basket (12) and the finished product basket (13), and the clamping head (24) of the clamping cylinder (23) is arranged to face left; The detection device also includes a strip-shaped carrier (25) for loading a plurality of artificial teeth (1), the strip-shaped carrier (25) including a carrier body (26) and an L-plate (27), the horizontal plate of the L-plate (27) being connected to the bottom surface of the carrier body (26), a horizontal spring (28) being fixedly arranged between the vertical plate of the L-plate (27) and the carrier body (26), under the elastic force of the horizontal spring (28), the vertical plate of the L-plate (27) abuts against the right end surface of the carrier body (26), and a rod (29) is fixedly arranged on the right end surface of the vertical plate of the L-plate (27); A plurality of receiving holes (30) for receiving the artificial tooth (1) are provided on the top surface of the carrier body (26) along its length direction; a plurality of straight holes (31) respectively connected to the receiving holes (30) are provided in the L plate (27); a plurality of blanking holes (32) respectively staggered with the receiving holes (30) are also provided in the L plate (27); and a rectangular blind groove (33) located on the left side of the L plate (27) is provided on the bottom surface of the carrier body (26).

2. The highly efficient and automated all-round detection device for denture surface cracks according to claim 1, characterized in that: The auxiliary detection assembly comprises a driving motor (34) fixedly mounted on the top surface of the third connection and two guide rails, the output shaft of the driving motor (34) being connected to a gear (35), a floating plate (36) located above the gear (35) being slidably mounted between the two guide rails, a servo motor (37) being fixedly mounted on the top surface of the floating plate (36), a rotating shaft, a thin rod (38) and a conical head being sequentially connected to the output shaft of the servo motor (37), a rack (40) being fixedly mounted on the bottom surface of the floating plate (36), and the rack (40) being meshed with the gear (35).

3. The highly efficient and automated all-round detection device for denture surface cracks according to claim 2, characterized in that: The conical head matches the conical hole (2) of the artificial tooth (1).

4. The highly efficient and automated all-round detection device for detecting cracks on the surface of dentures according to claim 3, characterized in that: The width of the U-shaped groove (19) of the material receiving box (18) is equal to the diameter of the thin rod (38).

5. The highly efficient and automated all-round detection device for denture surface cracks according to claim 4, characterized in that: The spacing between each two adjacent receiving holes (30) in the carrier plate body (26) is equal, the spacing between each two adjacent straight holes (31) in the L plate (27) is equal, and the diameter of the straight hole (31) is smaller than the diameter of the receiving hole (30).

6. The highly efficient and automated all-round detection device for denture surface cracks according to claim 5, characterized in that: The rotary conveying assembly (6) comprises a stepper motor (41) fixedly mounted on a workbench (5), a turntable (42) fixedly mounted on an output shaft of the stepper motor (41), a plurality of conveying cylinders (43) fixedly mounted on the top surface of the turntable (42) along its circumferential direction, a piston rod of each conveying cylinder (43) extending outside the turntable (42), a cushion block (44) fixedly mounted on the extended end, and a rectangular plug block (45) fixedly mounted on the top surface of the cushion block (44).

7. The highly efficient and automated all-round detection device for denture surface cracks according to claim 6, characterized in that: A plurality of conveying cylinders (43) are evenly distributed on the turntable (42).

8. The highly efficient and automated all-round detection device for detecting cracks on the surface of dentures according to claim 7, characterized in that: The detection device also includes a controller, which is electrically connected to the first horizontal cylinder (14), the second horizontal cylinder (15), the downward pressure cylinder (20), the conveying cylinder (43), the stepping motor (41), the driving motor (34), the servo motor (37) and the CCD lens (4) via signal lines.

9. A method for efficiently and automatically detecting cracks on the surface of a denture in all directions, using the device for efficiently and automatically detecting cracks on the surface of a denture in all directions as claimed in claim 8, characterized in that: It includes the following steps: S1. Pre-loading a plurality of dentures to be inspected in a plurality of bar-shaped carriers (25). The specific operation steps are as follows: S11, the worker takes out a strip carrier (25), and places the strip carrier (25) flat on the table, and then pre-places a denture (1) to be tested in each receiving hole (30) of the carrier body (26) of the strip carrier (25). At this time, the bottom surface of the denture (1) is supported on the top surface of the L plate (27) of the strip carrier (25), and the tapered hole (2) of the denture (1) is just connected to the straight hole (31), thereby realizing the pre-loading of multiple dentures (1) to be tested in one strip carrier (25); S12, the worker repeats the operation of step S11 for multiple times, so that multiple dentures (1) with detection are pre-loaded in multiple strip-shaped carriers (25); S2. Installing the plurality of strip-shaped carriers (25) respectively and correspondingly on the rectangular plugs (45) of the rotary conveying assembly (6), the specific operation steps are as follows: S21, the worker inserts the rectangular blind groove (33) of the first strip-shaped carrier (25) into the first rectangular plug-in block (45) of the rotary conveying assembly (6) from top to bottom, and supports the bottom surface of the left end of the strip-shaped carrier (25) on the cushion block (44), thereby achieving installation of a strip-shaped carrier (25) on the first rectangular plug-in block (45) of the rotary conveying assembly (6); S22, the worker repeats the operation of step S21 for multiple times, and the plurality of bar-shaped carriers (25) are respectively mounted on the respective rectangular inserts (45) of the rotary conveying assembly (6), thereby achieving the loading of the plurality of dentures (1) to be inspected; S3, performing surface inspection on all the multiple dentures (1) in the first strip-shaped carrier (25), wherein the specific operation steps are as follows: S31, controlling the stepper motor (41) of the rotary conveying assembly (6) to start, the stepper motor (41) drives the turntable (42) to rotate on the horizontal plane, the turntable (42) drives each conveying cylinder (43) thereon to rotate on the horizontal plane, when the first strip carrier (25) faces the automatic detection and unloading assembly (7), the controller controls the stepper motor (41) to turn off; S32, controlling the piston rod of the conveying cylinder (43) to extend to the right, the piston rod drives the cushion block (44) and the rectangular insert block (45) to move to the right synchronously, the cushion block (44) drives the strip carrier (25) thereon to move to the right, the strip carrier (25) drives each of the artificial teeth (1) therein to move to the right synchronously, when the first artificial tooth (1) moves to the top of the conical head of the automatic detection and unloading component (7), the controller controls the conveying cylinder (43) to close; S33, controlling the driving motor (34) of the automatic detection and unloading component (7) to rotate clockwise, the driving motor (34) drives the gear (35) to rotate clockwise, the gear (35) drives the rack (40) to move upward, the rack (40) drives the floating plate (36) to move upward along the guide rail, the floating plate (36) drives the servo motor (37), the rotating shaft, the thin rod (38) and the conical head to move upward synchronously, the conical head passes through the straight hole (31) upward and is inserted into the conical hole (2) of the first artificial tooth (1), as the conical head continues to move upward, the conical head ejects the first artificial tooth (1) from the strip carrier (25), when the ejected artificial tooth (1) moves to the right side of the CCD lens (4), the controller controls the driving motor (34) to turn off, at which time, the first artificial tooth (1) enters the surface detection station; S34, the servo motor (37) controlling the automatic detection and unloading component (7) is started, the servo motor (37) drives the rotating shaft to rotate, the rotating shaft drives the thin rod (38) and the conical head to rotate synchronously, and the conical head drives the first denture (1) to rotate synchronously. During the rotation process, the CCD lens (4) detects the surface of the denture (1) in real time. If the CCD lens (4) detects that there are cracks on the surface of the denture (1), the denture (1) is determined to be a defective product. At this time, the CCD lens (4) sends an electrical signal to the controller, and the controller automatically removes the defective products into the waste basket (12). The steps are: S341, the controller controls the piston rod of the first horizontal cylinder (14) to extend to the left, the piston rod drives the movable plate (16) to move to the left, the movable plate (16) drives the hinge seat (17), the downward pressure cylinder (20) and the receiving box (18) to move to the left synchronously, when the piston rod of the first horizontal cylinder (14) is fully extended, the U-shaped groove (19) of the receiving box (18) is just sleeved on the outside of the thin rod (38), and the unqualified products (46) are in the receiving box (18); S342, the controller controls the driving motor (34) of the automatic detection and unloading component (7) to rotate counterclockwise, the driving motor (34) drives the gear (35) to rotate counterclockwise, the gear (35) drives the rack (40) to move downward, and then drives the floating plate (36) to move downward, the floating plate (36) drives the thin rod (38) and the conical head to move downward synchronously, when the conical head moves downward, the unqualified product (46) falls into the receiving box (18); S343, control the piston rod of the first horizontal cylinder (14) to retract to the right, the piston rod drives the movable plate (16) to move to the right, the movable plate (16) drives the hinge seat (17), the downward pressure cylinder (20) and the receiving box (18) to move to the right synchronously, the receiving box (18) drives the unqualified products (46) dropped into it to move synchronously, when the receiving box (18) moves to the top of the waste basket (12), the controller controls the first horizontal cylinder (14) to close; then the controller controls the piston rod of the downward pressure cylinder (20) to extend downward, The piston rod drives the pressure head (21) to move downward, and the pressure head (21) presses downward against the material receiving box (18), and the material receiving box (18) rotates downward around the hinge seat (17), and the material receiving box (18) pulls the tension spring (22) downward, and when the material receiving box (18) is in a tilted state, the unqualified products (46) in the material receiving box (18) slide into the waste basket (12), thereby realizing the removal of the unqualified products (46) into the waste basket (12), and further realizing the surface detection of the first denture (1) in the strip carrier (25); S35, controlling the piston rod of the conveying cylinder (43) to extend rightward to drive the strip carrier (25) to move rightward, and the strip carrier (25) drives each of the artificial teeth (1) therein to move rightward synchronously, and when the second artificial tooth (1) moves to the top of the conical head of the automatic detection and unloading component (7), the controller controls the conveying cylinder (43) to close; S36, controlling the drive motor (34) to rotate clockwise, the drive motor (34) drives the gear (35) to rotate clockwise, and the conical head ejects the second denture (1) from the strip carrier (25). When the ejected denture (1) moves to the right side of the CCD lens (4), the controller controls the drive motor (34) to turn off, and at this time, the second denture (1) enters the surface inspection station; S37, controlling the servo motor (37) to start so that the conical head rotates, and the conical head drives the second denture (1) to rotate synchronously. During the rotation process, the CCD lens (4) detects the surface of the denture (1) in real time. If the CCD lens (4) detects that there are cracks on the surface of the second denture (1), the controller executes the operations of steps S341 to S343 to remove the defective products into the waste basket (12); If the CCD lens (4) detects that there are cracks on the surface of the denture (1), the denture (1) is determined to be a qualified product (47). At this time, the CCD lens (4) sends an electrical signal to the controller to control the drive motor (34) to rotate counterclockwise. The drive motor (34) drives the gear (35) to rotate counterclockwise. The gear (35) drives the rack (40) to move downward. The rack (40) drives the floating plate (36) and the conical head to move downward synchronously. The conical head drives the qualified product (47) to move downward synchronously. When the conical head passes through the strip carrier (25) downward, the qualified product (47) enters the strip carrier (25), thereby realizing the surface detection of the second denture (1) in the strip carrier (25); S38. Repeating the operations of steps S35 to S37 in this way, the surface inspection of the plurality of dentures (1) in the first strip carrier (25) can be completed. At this time, all the unqualified products (46) have been removed into the waste basket (12), while all the qualified products (47) remain in the first strip carrier (25). At the same time, the rod (29) on the first strip carrier (25) just enters the clamping head (24) of the clamping cylinder (23). The controller collects all the qualified products (47) remaining in the first strip carrier (25) into the finished product basket (13). The steps are as follows: S381, the controller controls the clamping cylinder (23) to start, the clamping cylinder (23) drives the clamping head (24) to close, and the clamping head (24) clamps and fixes the rod (29); S382, control the piston rod of the second horizontal cylinder (15) to retract to the right, the piston rod drives the clamping cylinder (23) to move to the right, the clamping cylinder (23) drives the clamped rod (29) to move to the right, the rod (29) drives the L plate (27) of the strip carrier (25) to move to the right, the L plate (27) drives the various drop holes (32) therein to move to the right synchronously, and the L plate (27) pulls the horizontal spring (28) to the right, when the piston rod of the second horizontal cylinder (15) retracts to the set stroke, the various drop holes (32) in the L plate (27) are respectively connected to the various receiving holes (30) in the strip carrier (25), at this time, the various qualified products (47) in the strip carrier (25) fall into the finished product basket (13) under their own gravity, thereby realizing that all qualified products (47) in the first strip carrier (25) are collected into the finished product basket (13); S383, when all qualified products (47) in the first strip-shaped carrier (25) are collected into the finished product basket (13), the clamping cylinder (23) is controlled to be closed, and the clamping head (24) releases the rod (29). At this time, under the elastic restoring force of the horizontal spring (28), the L plate (27) is reset; S4. The worker repeats the operation of step S3 for multiple times, and then the surface of all the dentures (1) in each strip-shaped carrier (25) can be inspected.

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