CN116273982A

CN116273982A - Auxiliary device for detecting surface of machined part based on machine vision

Info

Publication number: CN116273982A
Application number: CN202310510814.9A
Authority: CN
Inventors: 胡波; 毕研婷
Original assignee: Jiangsu Vocational College of Electronics and Information
Current assignee: Jiangsu Vocational College of Electronics and Information
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-06-23

Abstract

The invention relates to an auxiliary device for detecting the surface of a workpiece based on machine vision, which relates to the technical field of machine vision detection; the chip conveying device is arranged on the bracket, and the right end of the conveying device is provided with a detection device which is arranged on the bracket and is used for placing the chip; the invention can solve the following problems in the process of detecting the surface of the workpiece in the prior art: 1. the existing equipment can only detect the upper end of the chip, but other multiple surfaces of the chip cannot be detected, so that the detection effect is poor; 2. the chip is relatively poor in stability when carrying out visual detection, and the chip is in pipelined's transportation process, and the chip takes place to remove when visual detection easily, and further the effect accuracy that leads to visual detection is relatively poor.

Description

Auxiliary device for detecting surface of machined part based on machine vision

Technical Field

The invention relates to the technical field of machine vision detection, in particular to an auxiliary device for detecting the surface of a workpiece based on machine vision.

Background

Industrial vision is image recognition for automatic inspection, workpiece processing and assembly automation, and control and monitoring of production processes; the machine is used for replacing human eyes to identify, judge and measure objects, and the machine relates to the fields of optics, optoelectronics, image processing, pattern recognition, signal processing, artificial intelligence, computer technology and the like, and has wide content.

Therefore, the machine vision detection is widely applied to various fields, from medical world images to remote sensing images, from industrial production detection to file processing and the like, and almost all occasions needing human vision need a machine vision detection system, and particularly in certain fields with high requirements or imperceptible human vision, the function of the machine vision detection system is very important.

The chip industry is typical, the chip is manufactured precisely and complicated, hundreds of millions of transistors, various microcircuits and pins are needed, and the chips are difficult to detect by human eyes; therefore, the manufacturing and detection of the chip can be efficiently realized by replacing human eyes with machine vision.

In the prior art, a Chinese patent with a patent number of CN216847437U is disclosed, and a chip visual inspection machine is disclosed, which comprises a material rack, an inspection mechanism and a transplanting mechanism; the transplanting mechanism comprises a carrying platform, a moving platform and a jacking mechanism, wherein the lower end of the carrying platform is provided with a supporting platform fixedly connected with the moving platform, one side of the carrying platform is provided with a fixing part for positioning the material tray, and the other side of the carrying platform is provided with a movable part for positioning the material tray; the support platform is provided with a bulge, the bottom of the carrier platform is provided with a moving groove, a movable plate moving in the moving groove is arranged in the moving groove, the movable plate is fixedly connected with an actuating block, the actuating block is provided with a first guide groove which is matched with the bulge to convert the lifting motion of the carrier platform into the movement of the movable plate in the moving groove, and the movable plate is provided with a second guide groove which is used for converting the movement of the movable plate into the movement of the movable part towards the fixed part; the chip visual inspection machine aims at effectively unstacking and stacking a material rack, and solves the problem that an existing chip visual inspection machine is low in detection efficiency.

1. In the prior art, the visual inspection machine mainly shoots and detects the surface of the chip, detects the surface, pins and metal contact points of the chip in a preset mode, but the chip is conveyed by the conveying belt, the existing equipment can only detect the upper end of the chip, and the other multiple surfaces of the chip cannot be detected, so that the detection effect is poor.

2. In the prior art, the stability of the chip is poor when the chip performs visual detection, and the chip needs to be conveyed, so that the chip is easy to move during visual detection, and further the accuracy of the visual detection is poor.

Therefore, in view of the above, the prior art has room for optimizing the auxiliary device for machine vision-based surface detection of a workpiece.

Disclosure of Invention

In order to solve the problems, the invention provides an auxiliary device for detecting the surface of a workpiece based on machine vision.

The utility model provides a machined part surface detects and uses auxiliary device based on machine vision, includes the conveyor who is used for carrying the chip, conveyor sets up on the support, and conveyor's right-hand member is provided with installs on the support and is used for placing the detection device of chip.

The detection device comprises a placing disc which is rotatably installed on a support, square grooves are formed in the outer edge of the placing disc along the circumferential direction of the placing disc at equal intervals, transverse movable grooves are formed in the inner sides of the square grooves, first electric pushing rods are fixedly installed at one ends of the inner portions of the transverse movable grooves, second electric pushing rods are fixedly installed at the front ends and the rear ends of the inner portions of the transverse movable grooves, output ends of the second electric pushing rods are distributed relatively, chip fixing frames are placed in the inner portions of the square grooves, round hole grooves are formed in the outer side walls of the chip fixing frames, corresponding to the output ends of the first electric pushing rods and the output ends of the second electric pushing rods, chip fixing frames are provided with chip fixing devices, adjusting assemblies for adjusting chip positions are arranged in the inner portions of the chip fixing frames, and leakage assemblies are arranged at the bottoms of the chip fixing frames.

Preferably, the conveying device comprises four groups of conveying rollers which are arranged on the support in a rotating mode and are distributed in a rectangular mode, conveying belts are paved on the four groups of conveying rollers together, a plurality of -shaped positioning frames are fixedly arranged at the upper end of each conveying belt at equal intervals, linkage assemblies are arranged at the side ends of the conveying belts, and a driving motor is connected to one side, away from the linkage assemblies, of each conveying roller.

Preferably, the linkage assembly comprises a first conical gear fixedly connected to a conveying roller at the left lower part of the conveying belt, a second conical gear meshed with the lower part of the first conical gear, a belt wheel fixedly connected to the lower end of the second conical gear, a linkage belt sleeved on the belt wheel, one end of the linkage belt, far away from the belt wheel, is sleeved on a rotating shaft, and the rotating shaft is connected with the placing disc through an intermittent assembly.

Preferably, the intermittent assembly comprises a driven intermittent wheel fixedly connected with the bottom of the placing disc, a driving intermittent wheel is meshed with the side end of the driven intermittent wheel, and the bottom of the driving intermittent wheel is fixedly connected with the rotating shaft.

Preferably, the chip fixer comprises a clamping plate, wherein the clamping plate is rotatably installed at one end, close to a center shaft of a placing disc, of a chip fixing frame through a pin shaft, a linkage torsion spring is arranged on the pin shaft, a fixed gear which is rotatably distributed on the side wall of the chip fixing frame is connected to the side end of the clamping plate, two reversing gears which are sequentially distributed are meshed with the upper end of the fixed gear, an executing gear is meshed with the upper end of the reversing gear, a first driving conical wheel is fixedly connected to the side end of the executing gear, a second driving conical wheel is meshed with the side end of the first driving conical wheel, a linkage bevel gear is fixedly connected to the side end of the second driving conical wheel through a center shaft, a linkage bevel gear is meshed with the bottom of the linkage bevel gear, the linkage bevel gear is connected with a bracket through an auxiliary frame, and a locking unit for locking the clamping plate is arranged at the side end of the chip fixing frame.

Preferably, the locking unit comprises a locking spring rod fixedly arranged at the side end of the chip fixing frame, and a locking triangular block is fixedly arranged on the locking spring rod.

Preferably, the adjusting component comprises a first linkage gear fixedly installed on the output end of the first electric push rod, a linkage toothed ring fixedly installed on the support is meshed below the first linkage gear, a first adjusting conical gear is fixedly installed on the output end of the second electric push rod, a second adjusting conical gear is meshed with the side end of the first adjusting conical gear through a fixing frame fixedly installed on the second electric push rod, the side end of the second adjusting conical gear is fixedly connected with an adjusting gear, an adjusting toothed ring is meshed with the lower end of the adjusting gear, the adjusting toothed ring is fixed on the support, splicing blocks are fixedly connected to the output ends of the first electric push rod and the second electric push rod, and the splicing blocks correspond to round hole grooves of the side ends of the chip fixing frame.

Preferably, the linkage ring gear is C shape structure, and the initial end of linkage ring gear is located the below of placing the square groove that the upper left corner of disc corresponds, and the terminal of linkage ring gear is located the below of placing the square groove that the disc is close to conveyer belt one side, the initial end of adjusting the ring gear position is located the below of placing the square groove that the disc is away from conveyer belt one side, and the terminal of adjusting the ring gear is located the below of placing the square groove that the disc is close to conveyer belt one side, and the mutual noninterference between linkage ring gear and the regulation ring gear.

Preferably, the material leakage component comprises a support bracket hinged to one side of the bottom of the chip fixing frame through a pin shaft, a material leakage torsion spring is connected between the pin shaft and the support bracket, one end, far away from a hinge point, of the lower end of the support bracket is fixedly connected with a return-shaped limit frame, a trapezoid block is fixed on the support bracket, the trapezoid block corresponds to the return-shaped limit frame, and the upper end of the support bracket is hinged with a linkage special-shaped rod.

The upper end of the support is fixed with a conveyor, and the conveyor is positioned under the support bracket.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the invention can realize the automatic detection of the chip in a pipeline way, greatly improves the efficiency of the chip detection, and simultaneously, the accuracy and the high efficiency of the chip detection are greatly improved by matching with the visual detection.

2. The invention can carry out visual detection on six sides of the chip when the chip is detected, ensures the accuracy of the chip detection, avoids the phenomenon that the chip is not detected in place when the chip is detected by the visual detection in the prior art, and can regulate the angle of the chip.

3. The invention can rapidly clamp and position the chip, and avoid the occurrence of ghost image in visual detection caused by movement of the chip in the visual detection process, thereby further causing poor visual detection effect.

Drawings

The invention will be further described with reference to the drawings and examples.

Fig. 1 is a schematic diagram of the main structure of the present invention.

Fig. 2 is a schematic structural view of the conveying device of the present invention.

FIG. 3 is a schematic diagram of the structure of the detecting device of the present invention.

Fig. 4 is a schematic structural view of the linkage assembly of the present invention.

FIG. 5 is a schematic view of the structure of the chip holder of the present invention.

Fig. 6 is a schematic structural view of the locking unit of the present invention.

Fig. 7 is a schematic view of the structure of the adjusting assembly of the present invention.

Fig. 8 is a partial enlarged view of the present invention at B in fig. 7.

Fig. 9 is a partial enlarged view of the present invention at C in fig. 7.

FIG. 10 is a schematic view of the leak assembly of the present invention.

In the figure, A, a machine vision device; 1. a conveying device; 2. a bracket; 3. a detection device; 30. placing a disc; 31. a square groove; 32. a first electric push rod; 33. a second electric push rod; 34. a chip fixing frame; 35. a chip holder; 36. an adjustment assembly; 37. a material leakage component; 10. a conveying roller; 11. a conveyor belt; 12. -shaped positioning frame; 13. a linkage assembly; 14. a driving motor; 130. a first bevel gear; 131. a secondary bevel gear; 132. a belt wheel; 133. a linkage belt; 134. a rotating shaft; 135. an intermittent assembly; 1351. a driven intermittent wheel; 1352. a driving intermittent wheel; 350. a clamping plate; 351. a linkage torsion spring; 352. a fixed gear; 353. a reversing gear; 349. an execution gear; 354. a first driving cone pulley; 355. a second driving cone pulley; 356. a central shaft; 357. linkage helical gears; 358. linkage bevel ring; 359. an auxiliary frame; 38. a locking unit; 380. locking the spring rod; 381. locking the triangular block; 360. a first linkage gear; 361. a linkage toothed ring; 362. an extension gear; 363. a first adjusting bevel gear; 364. a fixing frame; 365. a second adjusting bevel gear; 366. an adjusting gear; 367. adjusting the toothed ring; 368. a plug block; 369. a swivel; 370. a support bracket; 371. a clip-shaped limit frame; 372. a trapezoid block; 373. a conveyor; 374. a material leakage torsion spring; 375. and (5) linkage special-shaped rods.

Detailed Description

Embodiments of the invention are described in detail below with reference to fig. 1-10, but the invention can be practiced in many different ways as defined and covered by the claims.

The embodiment of the application discloses an auxiliary device for detecting the surface of a workpiece based on machine vision; the chip surface detection device has the advantages that the chip batch detection can be realized through the assembly line mode, so that the chip automatic detection is realized, the chip surface detection efficiency is improved, and meanwhile, the chip batch detection can be effectively realized.

Referring to fig. 1, a schematic main structure of the present invention is shown; the utility model provides a machined part surface detects and uses auxiliary device based on machine vision, includes the conveyor 1 that is used for carrying the chip, and conveyor 1 sets up on support 2, and conveyor 1's right-hand member is provided with installs and cuts the detection device 3 that is used for placing the chip on support 2.

Firstly, a conveying device 1 conveys a chip to be detected, the conveying device 1 conveys the chip to be detected to a detecting device 3, and then the detecting device 3 detects the chip at the upper end of the chip; in the detection process, the chips which are detected well are collected, and some chips which are detected to be defective are removed.

It should be noted that:

the structure on the detection device 3 is transparent material, and the purpose is to ensure that the machine vision equipment A can detect more clearly and carefully in the process of detecting the chip, so that the laser of the machine vision equipment can irradiate on the chip better.

Referring to fig. 2, a schematic diagram of a structure of a conveying device 1 for conveying chips is shown; the conveying device 1 comprises four groups of conveying rollers 10 which are arranged on a support 2 in a rotating mode and are distributed in a rectangular mode, the conveying rollers 10 are distributed horizontally, conveying belts 11 are paved on the four groups of conveying rollers 10 together, a plurality of -shaped positioning frames 12 are fixedly arranged at the upper end of each conveying belt 11 at equal intervals, a linkage assembly 13 is arranged at the side end of each conveying belt 11, and a driving motor 14 is connected to one side, far away from the linkage assembly 13, of each conveying roller 10.

Before detecting chips, the produced chips are conveyed to a detection area at a constant speed, the driving motor 14 is started firstly, the driving motor 14 drives the conveying roller 10 to rotate, then the conveying roller 10 drives the conveying belt 11 to rotate clockwise, the conveying belt 11 is guaranteed to rotate at a constant speed, then an operator sequentially places the chips on the inner side of the -shaped positioning frame 12 which is fixed at equal intervals on the upper end of the conveying belt 11, the chips can be guaranteed to be abutted against the inner wall of the -shaped positioning frame 12, the main purpose of the chip detection device is that the distance between each chip is the same after each chip is placed on the conveying belt 11, the distance between each chip and the conveying belt 11 after each chip is separated is the same, and the chips can enter the chip fixing frame 34 of the subsequent detection device 3.

In the clockwise rotation process of the conveyor belt 11, the placing disc 30 is driven by the linkage assembly 13 to synchronously rotate clockwise, and the main purpose of the conveyor belt is to ensure that chips at the upper end of the conveyor belt 11 can sequentially slide to the chip fixing frame 34 specially used for loading chips at the upper end of the placing disc 30, and the placing disc 30 can perform intermittent motion through the linkage assembly 13.

Referring to fig. 3 and 5, a schematic structural diagram of the detecting device 3 is shown; the detection device 3 comprises a placing disc 30 which is rotatably installed on the support 2, square grooves 31 are formed in the outer edge of the placing disc 30 at equal intervals along the circumferential direction of the placing disc, transverse movable grooves are formed in the inner sides of the square grooves 31, first electric push rods 32 are fixedly installed at the left end and the right end of the inner part of each transverse movable groove, second electric push rods 33 are fixedly installed at the front end and the rear end of the inner part of each transverse movable groove, and the output ends of the first electric push rods 32 and the second electric push rods 33 are distributed towards the upper chip fixing frame 34.

The output ends of the first electric push rod 32 and the second electric push rod 33 can stretch and retract, so that the output ends of the first electric push rod 32 and the second electric push rod 33 are alternately connected with the circular hole grooves on the chip fixing frame 34; when the two first electric push rods 32 are connected with the round hole grooves on the chip fixing frame 34, the chip fixing frame 34 can rotate back and forth; when the two second electric push rods 33 are connected with the circular hole grooves on the chip fixing frame 34, the chip fixing frame 34 can rotate left and right.

After the output end of the first electric push rod 32 is inserted into the circular hole groove on the chip fixing frame 34, the chip fixing frame 34 can rotate left and right; when the output end of the second electric push rod 33 is inserted into the circular hole groove on the chip fixing frame 34, and the output end of the first electric push rod 32 is separated from the circular hole groove of the chip fixing frame 34, the chip fixing frame 34 can rotate back and forth at the moment, and then the chip is detected at multiple angles through the machine vision equipment A, so that the surface detection of the chip is realized, the quality of the chip is judged, and whether the chip is damaged is judged.

The inside of square groove 31 has placed chip fixed frame 34, and the round hole recess has been seted up to the output of the corresponding electric putter of No. one 32 of the lateral wall of chip fixed frame 34 and the output of No. two electric putter 33, and the upper end of chip fixed frame 34 is equipped with chip fixer 35, and the inside of chip fixed frame 34 is equipped with the adjusting part 36 that adjusts the chip position, and the bottom of chip fixed frame 34 is equipped with leaks material subassembly 37.

Specifically, the material leakage component 37 is used for facilitating the same collection of the detected chips and ensuring the subsequent operation of the chips.

Referring to fig. 4, in the process of rotating the conveyor belt 11, the placing disc 30 can be driven to synchronously rotate by the linkage assembly 13, and based on this, the invention shows a schematic structural diagram of the linkage assembly 13; the linkage assembly 13 comprises a first conical gear 130 fixedly connected to the conveying roller 10 at the left lower part of the conveying belt 11, a second conical gear 131 is meshed below the first conical gear 130, the lower end of the second conical gear 131 is fixedly connected with a belt wheel 132, a linkage belt 133 is sleeved on the belt wheel 132, one end, far away from the belt wheel 132, of the linkage belt 133 is sleeved on a rotating shaft 134, and the rotating shaft 134 is connected with the placing disc 30 through an intermittent assembly 135.

When the conveyer belt 11 rotates, the conveyer roller 10 on the conveyer belt 11 drives the first conical gear 130 to rotate, the first conical gear 130 drives the belt pulley 132 to rotate through the engaged second conical gear 131, the belt pulley 132 is driven by the second conical gear 131 to rotate, the rotating shaft 134 is driven by the linkage belt 133 to rotate, and the placing disc 30 is driven by the rotating shaft 134 to intermittently rotate through the intermittent assembly 135, so that chips on the conveyer belt 11 are matched with the placing disc 30 in the conveying process, and the chips fall into the chip fixing frame 34 on the placing disc 30.

Referring again to fig. 4, the intermittent assembly 135 includes a driven intermittent wheel 1351 fixedly connected to the bottom of the placement disc 30, and a driving intermittent wheel 1352 engaged with a side end of the driven intermittent wheel 1351, wherein the bottom of the driving intermittent wheel 1352 is fixedly connected to the rotation shaft 134.

When the rotating shaft 134 rotates, the rotating shaft 134 drives the driving intermittent wheel 1352 first, the driving intermittent wheel 1352 starts to drive the driven intermittent wheel 1351 to intermittently rotate, the driven intermittent wheel 1351 drives the placing disc 30 to rotate while intermittently rotating, the placing disc 30 drives the chip fixedly connected with the upper end of the placing disc to intermittently move in the rotating process, and then the surface of the chip is subjected to multi-angle visual detection through the machine visual equipment A in the intermittent moving process of the chip.

Referring to fig. 5 and 6, a schematic structure of a chip fixed inside the chip fixing frame 34 is shown; the chip holder 35 comprises a clamping plate 350 rotatably mounted on one end of the chip fixing frame 34, which is close to a central shaft 356 of the placing disc 30, through a pin shaft, a linkage torsion spring 351 is arranged on the pin shaft, a fixed gear 352 rotatably distributed on the side wall of the chip fixing frame 34 is connected to the side end of the clamping plate 350, two reversing gears 353 sequentially distributed are meshed to the upper end of the fixed gear 352, an executing gear 349 is meshed to the upper end of the reversing gear 353, a first driving conical wheel 354 is fixedly connected to the side end of the executing gear 349, a second driving conical wheel 355 is meshed to the side end of the first driving conical wheel 354, a linkage helical gear 357 is fixedly connected to the side end of the second driving conical wheel 355 through the central shaft 356, a linkage helical gear 358 is meshed to the bottom of the linkage helical gear 357, the linkage helical gear 358 is connected to the bracket 2 through an auxiliary bracket 359, the linkage helical gear 357 is an incomplete gear, and a locking unit 38 for locking the clamping plate 350 is arranged at the side end of the chip fixing frame 34.

When the conveyor belt 11 drives the chip at the upper end thereof to move clockwise, the chip is separated from the conveyor belt 11 after moving to the rightmost end of the conveyor belt 11, then the chip drops down to the inside of the chip fixing frame 34 on the placement disc 30, then along with the intermittent rotation of the placement disc 30, the linkage bevel gear 357 moves along the linkage toothed ring 361 engaged with the lower end thereof, and simultaneously the linkage bevel gear 357 rotates clockwise, the linkage bevel gear 357 drives the first driving bevel wheel 354 to rotate anticlockwise through the second driving bevel wheel 355 while rotating, and then the first driving bevel wheel 354 drives the fixed gear 352 to rotate anticlockwise through the reversing gear 353 sequentially engaged below the first driving bevel wheel 354 until the fixed gear 352 drives the clamping plate 350 to rotate anticlockwise through the pin shaft.

In the initial state, the clamping plate 350 is in a vertical state by the elastic force of the linkage torsion spring 351 itself.

When the holding plate 350 is rotated between the rotations of the placing disks 30, the holding plate 350 starts to rotate counterclockwise until the holding plate 350 abuts against the chip, and the chip is fixed by the locking unit 38, so that the holding plate 350 always abuts against the chip, and therefore, after the holding plate 350 rotates ninety degrees counterclockwise, the linkage bevel gear 357 is separated from the linkage toothed ring 361, and at this time, the holding plate 350 loses the external force, and is locked by the locking unit 38.

Referring again to fig. 6, the locking unit 38 includes a locking spring bar 380 fixedly mounted to a side end of the chip fixing frame 34, and a locking triangular block 381 is fixedly mounted to the locking spring bar 380.

When the clamp plate 350 starts to rotate counterclockwise from the initial state, the clamp plate 350 first presses the locking triangular block 381 so that the locking triangular block 381 can be compressed through its inclined surface, then the locking triangular block 381 compresses the locking spring lever 380 outward until the clamp plate 350 passes through the locking triangular block 381, then the locking triangular block 381 abuts against the upper end of the clamp plate 350, and the clamp plate 350 is restrained.

Referring to fig. 7, 8 and 9, after the clamping plate 350 completes the pressing and fixing of the chip, visual inspection needs to be performed on different angles of the chip, so the present invention proposes an adjusting assembly 36, which is a schematic structural diagram for performing angle adjustment on the chip fixing frame 34; the adjusting component 36 comprises a first linkage gear 360 fixedly installed on the output end of the first electric push rod 32, a linkage toothed ring 361 fixedly installed on the support 2 is meshed below the first linkage gear 360, a first adjusting conical gear 363 is fixedly installed on the output end of the second electric push rod 33, a second adjusting conical gear 365 is meshed with the side end of the first adjusting conical gear 363 through a fixing frame 364 fixedly installed on the second electric push rod 33, an adjusting gear 366 is fixedly connected with the side end of the second adjusting conical gear 365, an adjusting toothed ring 367 is meshed with the lower end of the adjusting gear 366, the adjusting toothed ring 367 is fixedly installed on the support 2, inserting blocks 368 are fixedly connected to the output ends of the first electric push rod 32 and the second electric push rod 33, and the inserting blocks 368 correspond to round hole grooves at the side end of the chip fixing frame 34.

In the initial state, the output end of the first electric putter 32 stretches out and draws back, so that the output end of the first electric putter 32 is inserted into the grooves at the left and right ends of the chip fixing frame 34, the chip fixing frame 34 is fixed, and in the initial state, the chip fixing frame 34 is in a horizontal state.

After the chip is fixed by the clamping plate 350, the placing disc 30 starts to intermittently rotate, and in the intermittent rotation process of the placing disc 30, the first linkage gear 360 on the output end of the first electric push rod 32 follows the placing disc 30 to synchronously rotate, and the first linkage gear 360 is meshed with the linkage toothed ring 361 fixed on the support 2, so that the first linkage gear 360 starts to rotate on the linkage toothed ring 361, and the first linkage gear 360 is guaranteed to drive the chip fixing frame 34 to rotate clockwise.

Referring to fig. 7, the linkage toothed ring 361 has a C-shaped structure, and an initial end of the linkage toothed ring 361 is located below the square groove 31 corresponding to the upper left corner of the placement disc 30; the terminal end of the linkage toothed ring 361 is located below the square groove 31 on the side, close to the conveyor belt 11, of the placing disc 30, the initial end of the adjusting toothed ring 367 is located below the square groove 31 on the side, far away from the conveyor belt 11, of the placing disc 30, the terminal end of the adjusting toothed ring 367 is located below the square groove 31 on the side, close to the conveyor belt 11, of the placing disc 30, and the linkage toothed ring 361 and the adjusting toothed ring 367 are not mutually interfered.

In the above description, the lengths of the linkage gear ring 361 and the adjustment gear ring 367 are constant, and the main purpose thereof is to ensure that the die-fixing frame 34 can perform precise angle adjustment at a designated position.

Taking the placing disk 30 as an example, in the initial state, the chip is dropped into the chip holding frame 34 on the left side of the placing disk 30, and then the chip holding frame 34 starts to rotate clockwise, and the angle of each rotation of the chip holding frame 34 is ninety degrees.

Firstly, after the chip is fixed on the chip fixing frame 34, the disc 30 is placed to start to intermittently rotate, the chip fixing frame 34 rotates ninety degrees, so that the chip is in a vertical state, at this time, the visual detection device A detects the chip, so that one side face of the chip is detected, then the chip fixing frame 34 rotates ninety degrees for the second time, the back face of the chip faces upwards, at this time, the visual detection device A detects the chip, and the visual detection device A detects whether the back face of the chip is intact, then the chip fixing frame 34 rotates ninety degrees for the third time, so that the other side face of the chip faces upwards, then the visual detection device A detects the chip, and the visual detection device A detects whether the side face of the chip is intact, at this time, the two largest-area faces and the two side faces of the chip are detected, and one side of the chip, which is close to the two first electric push rods 32, is not yet detected.

At this time, the chip-holding frame 34 starts to rotate for the fourth time, the chip in the chip-holding frame 34 returns to the state when it was initially dropped onto the chip-holding frame 34, during which the intermittent movement is stopped, the No. two electric push rods 33 start to be started, the output ends of the No. two electric push rods 33 extend out and are inserted into the circular hole grooves inside the chip-holding frame 34, and at this time, the chip-holding frame 34 starts to rotate left and right.

Then the chip fixing frame 34 starts to rotate for the fifth time, the chip fixing frame 34 starts to rotate left and right through the matching of the adjusting gear 366 and the adjusting toothed ring 367 on the second electric push rod 33, so that one end of the chip fixing frame 34, which is close to the first electric push rod 32, faces upwards before the chip fixing frame 34, the visual detection device A detects the chip, and the visual detection device A detects whether the side face of the chip is good, then the chip fixing frame 34 starts to rotate for the sixth time, so that the back face of the chip faces upwards, then the chip fixing frame 34 starts to rotate for the seventh time, the other end of the chip fixing frame 34, which is close to the first electric push rod 32, faces upwards, the visual detection device A detects the chip, and the visual detection device A detects whether the side face of the chip is good.

After the visual inspection is completed on the six sides of the chip, the visual inspection device marks the chip with the damage, so that the chip is convenient to reject.

After visual inspection of all six sides of the chip is completed, the chip is subjected to equidistant blanking by the blanking assembly 37, and the chips which are not satisfactory are removed after the blanking.

Referring to FIG. 10, a schematic diagram of a leak source assembly 37 is shown; the material leakage component 37 comprises a support bracket 370 hinged to one side of the bottom of the chip fixing frame 34 through a pin shaft, a material leakage torsion spring 374 is connected between the pin shaft and the support bracket 370, one end, far away from a hinge point, of the lower end of the support bracket 370 is fixedly connected with a return limiting frame 371, a trapezoid block 372 is fixed on the support 2, the trapezoid block 372 corresponds to the return limiting frame 371, and the upper end of the support bracket 370 is hinged with a linkage special-shaped rod 375.

A conveyor 373 is fixed to the upper end of the bracket 2, and the conveyor 373 is located directly below the support bracket 370.

After six sides of the chip are detected, the disc 30 is placed for the eighth time to start intermittent rotation, at this time, the chip fixing frame 34 starts to return to the initial state, in this process, the rectangular limit frame 371 at the bottom of the chip fixing frame 34 is sleeved on the trapezoidal block 372 fixed on the support 2, the trapezoidal block 372 limits the rectangular limit frame 371, so that the support bracket 370 is pulled by the rectangular limit frame 371, the support bracket 370 starts to rotate around the hinge point, at this time, after the chip located between the support bracket 370 and the clamping plate 350 loses the limit of the outside, the chip slides onto the conveyor 373 along the inclined support bracket 370, the chip is conveyed by the conveyor 373, and the marked chip is removed in the process of conveying the chip, and meanwhile, the chip meeting the quality standard is subjected to the procedure operation.

Meanwhile, after the eighth intermittent rotation of the placing disc 30 is completed, the clip-on limit frame 371 is separated from the trapezoid block 372, and the supporting bracket 370 presses down the locking triangular block 381 through the linkage special-shaped rod 375 when rotating downwards, so that the locking triangular block 381 moves towards one end far away from the clamping plate 350 until the locking triangular block 381 is not limiting the clamping plate 350, and at this time, the clamping plate rebounds to a vertical state under the action of the linkage torsion spring 351.

After the eighth intermittent rotation of the disc 30 is completed, the square limit frame 371 is separated from the trapezoid block 372, the support bracket 370 returns to the horizontal state again under the action of the leakage torsion spring 374, the bottom of the chip fixing frame 34 is filled, a new chip to be detected falls onto the support bracket 370 on the chip fixing frame 34, and the chip is detected again according to the circulation, so that the automatic streamline detection of the chip is realized, and the chip detection efficiency is greatly improved.

During operation, the first step: before the chip is detected, the driving motor 14 is started, the driving motor 14 drives the conveying belt 11 to rotate at a constant speed, then an operator sequentially places the chips on the inner side of the -shaped positioning frame 12 which is fixed at equal intervals at the upper end of the conveying belt 11, and the chips can be guaranteed to be abutted against the inner wall of the -shaped positioning frame 12.

And a second step of: when the conveyor belt 11 rotates, the conveyor roller 10 belt on the conveyor belt 11 drives the rotating shaft 134 to rotate through the linkage belt 133, and the rotating shaft 134 drives the placing disc 30 to intermittently rotate through the intermittent assembly 135, so that chips on the conveyor belt 11 are matched with the placing disc 30 in the conveying process, and each chip can fall into the chip fixing frame 34 on the intermittently rotating placing disc 30.

And a third step of: after the chip is dropped onto the chip fixing frame 34 on the placement disc 30, the holding plate 350 presses the locking triangular block 381 so that the locking triangular block 381 can be compressed through the inclined surface thereof until the holding plate 350 passes through the locking triangular block 381, and the locking triangular block 381 abuts against the upper end of the holding plate 350 and limits the holding plate 350.

Fourth step: when the rotating shaft 134 rotates, the rotating shaft 134 starts to drive the driven intermittent wheel 1351 to intermittently rotate through the driving intermittent wheel 1352, and the driven intermittent wheel 1351 drives the placing disc 30 to rotate while intermittently rotating, so that the placing disc 30 drives the chip fixedly connected with the upper end of the placing disc to intermittently move in the rotating process.

Fifth step: placing disc 30 carries out the multi-angle to the chip and adjusts at pivoted in-process, carries out visual detection to the different faces of chip simultaneously, marks the chip that does not meet the requirements simultaneously, and the mark is striking, is convenient for follow-up reject it.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. Auxiliary device for detecting the surface of a workpiece based on machine vision, comprising a conveying device (1) for conveying chips, characterized in that: the conveying device (1) is arranged on the bracket (2), and the right end of the conveying device (1) is provided with a detection device (3) which is arranged on the bracket (2) and is used for placing chips;

the detection device (3) comprises a placing disc (30) which is rotatably installed on a support (2), square grooves (31) are formed in the outer edge of the placing disc (30) at equal intervals along the circumferential direction of the placing disc, transverse movable grooves are formed in the inner sides of the square grooves (31), first electric pushing rods (32) are fixedly installed at the left ends and the right ends of the inner sides of the transverse movable grooves, second electric pushing rods (33) are fixedly installed at the front ends and the rear ends of the inner sides of the transverse movable grooves, the output ends of the first electric pushing rods (32) and the second electric pushing rods (33) are distributed towards a chip fixing frame (34), chip fixing frames (34) are placed in the inner sides of the square grooves (31), round hole grooves are formed in the outer side walls of the chip fixing frames (34) corresponding to the output ends of the first electric pushing rods (32) and the output ends of the second electric pushing rods (33), chip fixing frames (34) are provided with chip fixing devices (35), adjusting assemblies (36) for adjusting chip positions are arranged in the inner sides of the chip fixing frames (34), and leakage assemblies (37) are arranged at the bottoms of the chip fixing frames (34).

2. The auxiliary device for machine vision-based workpiece surface inspection according to claim 1, wherein: the conveying device (1) comprises four groups of conveying rollers (10) which are rotatably arranged on a support (2) and are in rectangular distribution, the conveying rollers (10) are horizontally distributed, conveying belts (11) are commonly paved on the four groups of conveying rollers (10), a plurality of -shaped positioning frames (12) are fixedly arranged at equal intervals at the upper ends of the conveying belts (11), linkage assemblies (13) are arranged at the side ends of the conveying belts (11), and one side, far away from the linkage assemblies (13), of each conveying roller (10) is connected with a driving motor (14).

3. The auxiliary device for machine vision-based workpiece surface detection as defined in claim 2, wherein: the linkage assembly (13) comprises a first conical gear (130) fixedly connected to a conveying roller (10) at the left lower part of the conveying belt (11), a second conical gear (131) is meshed below the first conical gear (130), a belt wheel (132) is fixedly connected to the lower end of the second conical gear (131), a linkage belt (133) is sleeved on the belt wheel (132), one end of the linkage belt (133), far away from the belt wheel (132), is sleeved on a rotating shaft (134), and the rotating shaft (134) is connected with the placing disc (30) through an intermittent assembly (135).

4. A machine vision-based auxiliary device for workpiece surface inspection as defined in claim 3, wherein: the intermittent assembly (135) comprises a driven intermittent wheel (1351) fixedly connected with the bottom of the placing disc (30), a driving intermittent wheel (1352) is meshed with the side end of the driven intermittent wheel (1351), and the bottom of the driving intermittent wheel (1352) is fixedly connected with the rotating shaft (134).

5. The auxiliary device for machine vision-based workpiece surface inspection according to claim 1, wherein: the chip fixer (35) comprises a chip fixing frame (34), a clamping plate (350) which is arranged at one end, close to a central shaft (356) of the placing disc (30), of the chip fixing frame through a pin shaft in a rotating mode, a linkage torsion spring (351) is arranged on the pin shaft, fixed gears (352) which are distributed on the side wall of the chip fixing frame (34) in a rotating mode are connected to the side ends of the clamping plate (350), two reversing gears (353) which are distributed in sequence are meshed with the upper ends of the fixed gears (352), an executing gear (349) is meshed with the upper ends of the reversing gears (353), a first driving conical wheel (354) is fixedly connected to the side end of the executing gear (349), a second driving conical wheel (355) is meshed with the side end of the first driving conical wheel (354), a linkage helical gear (357) is fixedly connected to the side end of the second driving conical wheel (356) through the central shaft, a linkage helical gear (357) is meshed with a linkage helical gear (358), the upper ends of the helical gear (358) are connected with a support (2) through an auxiliary frame (359), and locking unit (38) for locking the clamping plate (350) is arranged at the side ends of the chip fixing frame (34).

6. The machine vision-based auxiliary device for workpiece surface inspection according to claim 5, wherein: the locking unit (38) comprises a locking spring rod (380) fixedly arranged at the side end of the chip fixing frame (34), and a locking triangular block (381) is fixedly arranged on the locking spring rod (380).

7. The auxiliary device for machine vision-based workpiece surface inspection according to claim 1, wherein: the adjusting component (36) comprises a first linkage gear (360) fixedly installed at the output end of the first electric push rod (32), a linkage toothed ring (361) fixedly installed on the support (2) is meshed below the first linkage gear (360), a first adjusting conical gear (363) is fixedly installed at the output end of the second electric push rod (33), a second adjusting conical gear (365) is meshed at the side end of the first adjusting conical gear (363) through a fixing frame (364) fixedly installed on the second electric push rod (33), an adjusting gear (366) is fixedly connected at the side end of the second adjusting conical gear (365), an adjusting toothed ring (367) is meshed at the lower end of the adjusting gear (366), the adjusting toothed ring (367) is fixedly installed on the support (2), a plug-in block (368) is fixedly connected at the output end of the first electric push rod (32) and the second electric push rod (33), and a round hole groove at the side end of the chip fixing frame (34) corresponds to each other.

8. The machine vision-based auxiliary device for workpiece surface inspection according to claim 7, wherein: the linkage ring gear (361) is of a C-shaped structure, the initial end of the linkage ring gear (361) is located below a square groove (31) corresponding to the upper left corner of the placing disc (30), the terminal end of the linkage ring gear (361) is located below the square groove (31) on one side of the placing disc (30) close to the conveying belt (11), the initial end of the adjusting ring gear (367) is located below the square groove (31) on one side of the placing disc (30) far away from the conveying belt (11), and the terminal end of the adjusting ring gear (367) is located below the square groove (31) on one side of the placing disc (30) close to the conveying belt (11), and the linkage ring gear (361) and the adjusting ring gear (367) are not interfered with each other.

9. The auxiliary device for machine vision-based workpiece surface inspection according to claim 1, wherein: the leakage assembly (37) comprises a support bracket (370) hinged to one side of the bottom of the chip fixing frame (34) through a pin shaft, a leakage torsion spring (374) is connected between the pin shaft and the support bracket (370), one end, far away from a hinge point, of the lower end of the support bracket (370) is fixedly connected with a rectangular limiting frame (371), a trapezoid block (372) is fixed on the support (2), the trapezoid block (372) corresponds to the rectangular limiting frame (371), and the upper end of the support bracket (370) is hinged with a linkage special-shaped rod (375);

the upper end of the bracket (2) is fixed with a conveyor (373), and the conveyor (373) is positioned under the support bracket (370).