Visual inspection equipment for precision metal part machining

Abstract

The application relates to the technical field of precision metal processing, and particularly discloses a visual detection equipment for precision metal piece processing. A driving assembly can drive a rotating cylinder to reciprocate 180 degrees, and a precision metal piece falling into a containing groove from a discharging hopper can rotate together with the rotating cylinder. At this time, a rotating detection mechanism can perform visual detection on the surface of the rotating precision metal piece. When defects are detected, the precision metal piece is discharged by a classified discharging mechanism. When no defects are detected, the rotating detection mechanism drives the precision metal piece to rotate reversely. At this time, a smearing mechanism automatically coats a coating on the outer surface of the precision metal piece. When the precision metal piece rotates to the classified discharging mechanism from the discharging opening again, the rotating detection mechanism performs visual detection on the coating, and the coating with defects and the coating without defects are classified and discharged by the classified discharging mechanism. The whole process efficiently realizes full-automatic detection on the outer surface of the precision metal piece and simultaneous processing and detection on the subsequent coating, and realizes efficient integrated processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precision metal processing, in particular to a visual detection equipment for precision metal part processing. BACKGROUND

[0002] Precision metal parts are widely used in high-precision fields such as aerospace, automobile manufacturing, electronic equipment, medical devices, etc. These metal parts often need to withstand harsh working environments and have very high requirements on their dimensional accuracy, surface quality and functionality. Therefore, it is crucial to ensure the processing quality of precision metal parts, especially during the production process, strict quality detection must be carried out to ensure that there are no defects beyond the design tolerance range.

[0003] In the production process of precision metal parts, visual detection technology is often used to detect their surface quality and size. This process usually includes: when the workpiece passes through the detection area, the surface is scanned by using high-resolution cameras and precise light sources, image data is collected and compared with the preset standard for analysis. The detection system can determine whether the workpiece meets the design requirements and output the corresponding detection results.

[0004] In the traditional detection method, the workpiece usually needs to go through one or more independent steps, and is transferred and processed by manual or mechanical systems. Although these steps can complete the required detection, due to the lack of high integration and real-time feedback between operation steps, the overall detection process is relatively dispersed, and it is difficult to achieve continuous and efficient processing. There may be a certain pause or waiting between the detection links of each workpiece, which affects the production efficiency.

[0005] And in actual operation, the detection and subsequent processing links fail to form an effective linkage, resulting in delays in sorting and subsequent processing of qualified and unqualified workpieces. When dealing with complex processes or multiple functional requirements, it fails to achieve synchronous and accurate cooperation, the operation steps are lengthy, and the production efficiency is low. SUMMARY

[0006] In order to improve the efficiency of visual detection and subsequent processing of precision metal parts, the present application provides a visual detection equipment for precision metal part processing.

[0007] The visual detection equipment for precision metal part processing provided by the present application adopts the following technical scheme:

[0008] The visual detection equipment for precision metal part processing is used for detecting and processing hollow cylindrical precision metal parts, and comprises a processing table, a discharging hopper arranged on the processing table for sequentially discharging precision metal parts, a rotating detection mechanism arranged below the discharging hopper for rotating and visually detecting the precision metal parts, and a classified discharging mechanism arranged below the rotating detection mechanism for classifying and discharging the precision metal parts.

[0009] The rotating detection mechanism comprises a fixed cylinder, a rotating cylinder, a driving assembly and a visual detection assembly. The fixed cylinder is mounted on the processing table, the discharging hopper is fixed on the top of the fixed cylinder, and the bottom of the discharging hopper is provided with a discharging port communicated with the inner cavity of the fixed cylinder. The rotating cylinder is coaxially arranged in the fixed cylinder, and the outer circumferential wall of the rotating cylinder is provided with a containing groove for containing the precision metal parts. The outer circumferential wall of the rotating cylinder is provided with a rotating and clamping mechanism corresponding to the containing groove for clamping and rotating the precision metal parts falling into the containing groove.

[0010] The driving assembly is used for reciprocatingly rotating the rotating cylinder by 180 degrees to rotate the containing groove from the discharging port to the classified discharging mechanism. The rotating and clamping mechanism is used for rotating the precision metal parts by one revolution during the rotation of the containing groove from the discharging port to the classified discharging mechanism.

[0011] The rotating cylinder is provided with a smearing mechanism for coating a protective layer on the outer surface of the precision metal parts detected by the visual detection assembly. The smearing mechanism automatically smears the precision metal parts when the rotating cylinder is reversely rotated after being detected by the visual detection assembly.

[0012] By adopting the above technical scheme, the driving assembly can reciprocatingly rotate the rotating cylinder by 180 degrees. During the rotation, the precision metal parts falling into the containing groove from the discharging hopper can rotate with the rotating cylinder. During the rotation, the rotating detection mechanism visually detects the surface of the precision metal parts clamped and rotated by the rotating and clamping mechanism. When a defect is detected, the rotating detection mechanism discharges the precision metal parts from the classified discharging mechanism. When no defect is detected, the rotating detection mechanism reversely rotates the precision metal parts. At this time, the smearing mechanism automatically coats a coating layer on the outer surface of the precision metal parts. During the rotation of the precision metal parts from the discharging port to the classified discharging mechanism again, the rotating detection mechanism visually detects the coating layer, and classifies and discharges the coating layers with defects and without defects from the classified discharging mechanism. The whole process can efficiently realize the full-automatic detection of the outer surface of the precision metal parts and the processing and detection of the subsequent coating layer, realize efficient integrated processing, and greatly improve the efficiency of the visual detection and subsequent processing of the precision metal parts.

[0013] Optionally, the visual detection assembly comprises two sets of image recognition arrays arranged on the inner wall of the fixed cylinder, the two sets of image recognition arrays are respectively located near the discharge port and the classification and discharge mechanism, and each set of image recognition array comprises two rows of arrays composed of a plurality of image recognition sensors, and the two sets of image recognition arrays can respectively perform image recognition on the surface of the rotating precision metal piece.

[0014] The fixed cylinder is provided with a position sensor for detecting the position of the precision metal piece after being recognized by the two sets of image recognition arrays, and the position sensor is located between the image recognition sensor array near the classification and discharge mechanism and the classification and discharge mechanism.

[0015] By adopting the above technical scheme, when the driving assembly drives the rotating cylinder to rotate, the containing groove on the rotating cylinder will drive the precision metal piece to rotate together, at this time, the first set of image recognition sensors respectively perform visual detection on the outer surface of the precision metal piece away from the containing groove, when the first set of image recognition sensors are detected, the rotating cylinder continues to drive the precision metal piece to rotate, and the rotating clamping mechanism rotates the side of the precision metal piece close to the containing groove to the side away from the containing groove, at this time, the second set of image recognition sensors perform visual detection on the surface of the rotated precision metal piece, so as to realize full coverage detection on the surface of the precision metal piece.

[0016] Optionally, the rotating clamping mechanism comprises a telescopic member, a rotating member and a clamping plate, the telescopic member, the rotating member and the clamping plate are symmetrically provided with two sets corresponding to the two ends of the containing groove, and the telescopic member is fixed to the inner wall of the containing groove, the fixed end of the rotating member is fixed to the telescopic end of the telescopic member, and the clamping plate is fixed to the rotating end of the rotating member, and the two clamping plates can clamp and fix the precision metal piece falling into the containing groove.

[0017] By adopting the above technical scheme, when the rotating cylinder drives the precision metal piece to rotate together with the rotating cylinder, the telescopic member is pre-elongated, so that the two clamping plates clamp and fix the end of the precision metal piece, at this time, the rotating member rotates, so as to drive the precision metal piece to rotate the side close to the containing groove to the side away from the containing groove, thereby facilitating the visual detection of the second set of image recognition sensors.

[0018] Optionally, the smearing mechanism comprises a liquid storage cylinder, a liquid outlet bin, a positioning cylinder and a reciprocating pump assembly, the liquid storage cylinder is fixedly connected with the rotating cylinder and located in the rotating cylinder, and the inner wall of the liquid storage cylinder is hollow and provided with a liquid coating for coating the outer surface of the qualified precision metal piece.

[0019] One end of the liquid outlet bin is fixed with the outer bottom wall of the containing groove and communicates with the inner wall, the positioning cylinder is fixedly connected with the rotating cylinder and located in the liquid storage cylinder, and the other end of the liquid outlet bin penetrates through the positioning cylinder and is fixedly connected with the positioning cylinder;

[0020] The part of the liquid storage cylinder connected with the liquid outlet bin communicates with each other, the first one-way valve for allowing the liquid coating to enter the liquid outlet bin from the liquid storage cylinder in one direction is arranged in the liquid storage cylinder, and the second one-way valve for allowing the liquid coating to enter the containing groove from the liquid outlet bin in one direction is arranged in the liquid outlet bin close to the outer wall of the containing groove;

[0021] The liquid outlet bin is arranged in an open state at one end penetrating through the positioning cylinder, and the reciprocating movement end of the reciprocating pump liquid assembly is partially inserted into the liquid outlet bin, so as to automatically pump the liquid coating in the liquid storage cylinder into the containing groove;

[0022] The one-way locking assembly for controlling the start of the reciprocating pump liquid assembly is arranged at the reciprocating pump liquid assembly, when the driving assembly drives the rotating cylinder to rotate from the discharging opening to the classified discharging mechanism, the reciprocating pump liquid assembly stops working, and when the driving assembly drives the rotating cylinder to rotate from the classified discharging mechanism to the discharging opening, the one-way locking assembly controls the reciprocating pump liquid assembly to work;

[0023] A plurality of heating members for heating and curing the surface of the precision metal part after the protective layer is coated are arranged between the two groups of image recognition sensors.

[0024] By adopting the above technical scheme, when the driving assembly drives the rotating cylinder to rotate, the liquid outlet bin and the positioning cylinder are rotated together, when rotating from the discharging opening to the classified discharging mechanism, the driving assembly does not drive the reciprocating pump liquid assembly to work, when the two groups of image recognition sensors complete the visual detection of the surface of the precision metal part and the surface of the precision metal part has no defects, the driving assembly drives the rotating cylinder to rotate reversely, when rotating from the classified discharging mechanism to the discharging opening, the driving assembly drives the reciprocating pump liquid assembly to work, so as to coat the protective layer on the surface of the precision metal part, and the protective layer is heated and cured under the action of the heating member.

[0025] When the coating on all positions of the surface of the precision metal part is completed, the two groups of image recognition sensors again perform visual detection on the coated coating, and according to whether there is a coating defect, the classified discharging of the precision metal part is realized.

[0026] Optionally, the reciprocating pump liquid assembly comprises a rotating shaft, a driving gear, a driven gear, a connecting rod and a piston, the rotating shaft is coaxially fixed on the axis of the rotating cylinder and is in transmission connection with the driving assembly, the driving gear is coaxially fixed on the rotating shaft, the driven gear is rotatably installed in the rotating cylinder and is in engagement with the driving gear, one end of the connecting rod is eccentrically rotatably connected with the end surface of the driving gear, and the other end is rotatably connected with the end surface of the piston, and the piston is slidably and sealingly arranged in the liquid outlet bin.

[0027] By adopting the above technical scheme, when the driving assembly drives the rotating shaft to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the piston to make reciprocating motion through the connecting rod, so that the liquid coating in the liquid storage cylinder is sprayed through the liquid outlet bin to the outer surface of the precision metal part in contact with the top of the containing groove, the coating of the surface of the precision metal part is realized, and the protection of the outer surface is realized in cooperation with the heating part.

[0028] Optionally, the one-way locking assembly comprises a rotating disc, a locking piece and an elastic piece, the rotating disc is coaxially connected with the driven gear, and the driven gear is rotatably installed outside the rotating disc, the end of the connecting rod is eccentrically rotatably connected with the rotating disc, and the inner wall of the driven gear is circumferentially provided with one-way clamping teeth;

[0029] An installation groove is formed in the wheel surface of the rotating disc, one end of the locking piece is rotatably installed on the inner wall of the installation groove, the other end is connected with the elastic piece, and the locking piece can extend into the one-way clamping teeth of the driven gear under the action of the elastic piece;

[0030] When the driving assembly drives the rotating cylinder to rotate from the discharge opening to the classified discharge mechanism, the locking piece is in rotational connection with the one-way clamping teeth, and the locking piece is in clamping and fixing connection with the one-way clamping teeth when the driving assembly drives the rotating cylinder to rotate from the classified discharge mechanism to the discharge opening.

[0031] By adopting the above technical scheme, when the rotating cylinder rotates from the discharge opening to the classified discharge mechanism, the locking piece is in rotational connection with the one-way clamping teeth, at this time, the main and driven gears can only drive the one-way clamping teeth to rotate, and cannot drive the driven gear to rotate, so the piston will not make reciprocating motion, and at this time, the precision metal part surface will not be sprayed with a protective layer;

[0032] When the rotating cylinder rotates from the classified discharge mechanism to the discharge opening, the locking piece is in fixed connection with the one-way clamping teeth at this time, the main and driven gears drive the driven gear to rotate, and the piston makes reciprocating motion, so as to spray the protective layer on the surface of the precision metal part, and realize the surface protection of the precision metal part.

[0033] Optionally, the containing grooves on the outer wall of the rotating cylinder are provided with two, when one of the containing grooves rotates to the position of the image recognition sensor at the classification and discharging mechanism, the other containing groove rotates to the position directly opposite the discharging port;

[0034] The position sensor, the reciprocating pump liquid assembly and the one-way locking assembly are correspondingly arranged, and the locking and unlocking states of the two one-way locking assemblies are opposite.

[0035] By adopting the above technical scheme, two groups of precise metal pieces can be staggered discharged, staggered visually detected and staggered coated with protective layers, so that the efficiency of visual detection and subsequent processing is greatly improved.

[0036] Optionally, the classification and discharging mechanism comprises a discharging and sorting bin, a sorting conveying belt and a sorting and collecting channel, the discharging and sorting bin is used for sorting the precise metal pieces in the two containing grooves after visual detection into qualified and unqualified ones, the sorting conveying belt is used for classifying conveying the qualified and unqualified precise metal pieces, and the sorting and collecting channel is used for classifying collecting the qualified and unqualified precise metal pieces conveyed by the sorting conveying belt.

[0037] By adopting the above technical scheme, the discharging and sorting bin can sort the precise metal pieces in the two containing grooves after visual detection into qualified and unqualified ones, the sorting conveying belt can classifying convey the qualified and unqualified precise metal pieces, and the sorting and collecting channel can classifying collect the qualified and unqualified precise metal pieces conveyed by the sorting conveying belt.

[0038] Optionally, the discharging and sorting bin comprises a discharging bin and classification bins, the discharging bin is provided with an opening at the top, and the classification bins are provided with two, the two classification bins are hollow and provided with openings at two ends, one end of the two classification bins is communicated with the discharging bin, and the other end is correspondingly arranged with the sorting conveying belt.

[0039] The discharging bin is rotatably provided with a sorting plate and a rotating piece for driving the sorting plate to rotate towards the two discharging bins, when the rotating piece rotates, the precise metal pieces falling into the discharging bin from the top of the discharging bin can fall into the corresponding classification bin through the sorting plate.

[0040] By adopting the above technical scheme, when the containing groove rotates to be directly opposite the top of the discharging bin, the telescopic piece is retracted at this time, the precise metal piece is discharged into the discharging bin, and under the driving of the rotating piece, the sorting plate discharges the precise metal piece into the corresponding classification bin, and the sorting conveying belt sorts and processes the qualified and unqualified precise metal pieces.

[0041] Optionally, the sorting conveyor is provided with two sorting conveyors corresponding to the two discharge hoppers, and the conveying directions of the two sorting conveyors are opposite, and the sorting collection channel comprises a discharging channel and a collection frame arranged in the bottom of the discharging channel.

[0042] By adopting the above technical scheme, the precision metal parts coming out of different classification hoppers can be conveyed to different discharging channels by different sorting conveyors, and then fall into the corresponding collection frames through the corresponding discharging channels, so as to realize the classification and collection of qualified and unqualified precision metal parts.

[0043] In summary, the present application has at least one of the following beneficial technical effects:

[0044] 1. The driving assembly can drive the rotating cylinder to reciprocate 180 degrees, and in the process of rotation, the precision metal parts falling into the containing groove from the discharge hopper can rotate together with the rotating cylinder, in this process, the rotation detection mechanism can detect the surface of the precision metal parts rotated by the rotating clamping mechanism, when defects are detected, the rotation detection mechanism can drive the precision metal parts to be discharged by the classification and discharging mechanism, when no defects are detected, the rotation detection mechanism can drive the precision metal parts to rotate in the opposite direction, at this time, the smearing mechanism can automatically coat the outer surface of the precision metal parts with a coating, when the precision metal parts are rotated to the classification and discharging mechanism again through the discharge port, the rotation detection mechanism can detect the coating, and the defective and non-defective coatings can be classified and discharged by the classification and discharging mechanism;

[0045] 2. The whole scheme can efficiently realize the full-automatic detection of the outer surface of the precision metal parts and the processing and detection of the subsequent coating together, realize efficient integrated processing, and greatly improve the efficiency of visual detection and subsequent processing of the precision metal parts;

[0046] 3. The two containing grooves, two groups of position sensors, two groups of reciprocating pump liquid assemblies and two groups of one-way locking assemblies can realize the staggered discharging, staggered visual detection and staggered smearing of protective layers of the two precision metal parts, thereby greatly improving the efficiency of visual detection and subsequent processing;

[0047] 4. The discharging and sorting hopper can sort the precision metal parts in the two containing grooves after visual detection, the sorting conveyor can classify and convey the qualified and unqualified precision metal parts, and the sorting collection channel can classify and collect the qualified and unqualified precision metal parts conveyed by the sorting conveyor. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is the overall structure schematic diagram of the visual detection equipment in the embodiment of the present application;

[0049] Figure 2 is Figure 1Internal structure schematic view of the visual detection equipment;

[0050] Figure 3 Is Figure 1 Lateral view schematic view of the rotating cylinder;

[0051] Figure 4 Is Figure 2 Structure schematic view at the rotating cylinder;

[0052] Figure 5 Is Figure 4 Structure schematic view at the reciprocating pump liquid assembly;

[0053] Figure 6 Is Figure 3 Partial structure schematic view of the scraping mechanism;

[0054] Figure 7 Is Figure 6 Structure schematic view of the sliding seat;

[0055] Figure 8 Is Figure 5 Structure schematic view at the one-way locking assembly.

[0056] Fig. 1, processing table; 11, feeding hopper; 2, rotating detection mechanism; 21, fixed cylinder; 211, position sensor; 212, heating piece; 22, rotating cylinder; 221, containing groove; 2211, liquid discharge groove; 2212, sponge strip; 23, driving assembly; 24, visual detection assembly; 3, classification feeding mechanism; 31, feeding and sorting bin; 311, feeding bin; 312, classification bin; 32, sorting conveyor belt; 33, sorting collection channel; 331, feeding channel; 332, collection frame; 4, rotating clamping mechanism; 41, telescopic piece; 42, rotating piece; 43, clamping plate; 5, smearing mechanism; 51, liquid storage cylinder; 52, liquid outlet bin; 53, positioning cylinder; 54, reciprocating pump liquid assembly; 541, rotating shaft; 542, driving gear; 543, driven gear; 5431, one-way clamping tooth; 544, connecting rod; 545, piston; 6, one-way locking assembly; 61, rotating disc; 62, locking piece; 63, elastic piece; 7, scraping mechanism; 71, connecting gear; 72, gear column; 73, sliding seat; 731, threaded groove; 732, pore flow channel; 74, threaded rod; 75, brush 75. DETAILED DESCRIPTION

[0057] The following will be described in detail in combination with the accompanying Figures 1-8 The present application is further described in detail.

[0058] The embodiment of the present application discloses a visual detection equipment for precise metal part processing.

[0059] The visual detection equipment for precise metal part processing, referring toFigure 1 and Figure 2 , for detecting and processing hollow cylindrical precision metal parts, comprising a machining table 1, a blanking hopper 11 for single and sequential blanking of the precision metal parts is arranged on the machining table 1 from top to bottom, a rotating detection mechanism 2 for rotating visual detection of the blanked precision metal parts, and a classification and blanking mechanism 3 for classifying and blanking the qualified and unqualified precision metal parts after detection.

[0060] Referring to Figure 1 and Figure 2 , the rotating detection mechanism 2 comprises a fixed cylinder 21, a rotating cylinder 22, a driving assembly 23, and a visual detection assembly 24, the fixed cylinder 21 is installed on the machining table 1, the blanking hopper 11 is fixed to the top of the fixed cylinder 21, and the bottom of the blanking hopper 11 is provided with a blanking opening communicated with the inner cavity of the fixed cylinder 21, the rotating cylinder 22 is coaxially and rotatably installed in the fixed cylinder 21, and the outer peripheral wall is provided with a containing groove 221 for containing the precision metal parts, and the rotating cylinder 22 is provided with a rotating and clamping mechanism 4 on the outer wall corresponding to the containing groove 221 for clamping and rotating the precision metal parts falling into the containing groove 221.

[0061] The driving assembly 23 adopts a speed reducer motor, the output shaft of the speed reducer motor is coaxially fixed with the rotating cylinder 22, and the driving assembly 23 is used to drive the rotating cylinder 22 to reciprocate 180 degrees, so that the containing groove 221 can be rotated from the blanking opening to the classification and blanking mechanism 3, and the rotating and clamping mechanism 4 is used to drive the precision metal parts to rotate one turn during the rotation of the containing groove 221 from the blanking opening to the classification and blanking mechanism 3.

[0062] The rotating cylinder 22 is provided with a smearing mechanism 5 for coating a protective layer on the outer surface of the qualified precision metal parts detected by the visual detection assembly 24, and the smearing mechanism 5 automatically smears the surface of the precision metal parts when the rotating cylinder 22 reversely rotates after passing through the visual detection assembly 24.

[0063] Referring to Figure 2 , the visual detection assembly 24 comprises two groups of image recognition arrays arranged on the inner wall of the fixed cylinder 21, and the two groups of image recognition arrays are respectively located near the blanking opening and near the classification and blanking mechanism 3, and each group of image recognition arrays comprises two rows of arrays composed of a plurality of image recognition sensors, and the two groups of image recognition arrays can respectively perform image recognition on the surface of the rotating precision metal parts.

[0064] Referring to Figure 2 , the fixed cylinder 21 is provided with a position sensor 211 for detecting the position of the precision metal parts after being recognized by the two groups of image recognition arrays, and the position sensor 211 is located between the image recognition sensor array near the classification and blanking mechanism 3 and the classification and blanking mechanism 3.

[0065] When the driving assembly 23 drives the rotating cylinder 22 to rotate, the containing groove 221 on the rotating cylinder 22 drives the precision metal piece to rotate, at this time, the first group of image recognition sensors respectively detect the outer surface of the precision metal piece away from the containing groove 221, when the first group of image recognition sensors are detected, the rotating cylinder 22 continues to drive the precision metal piece to rotate, and the rotating clamping mechanism 4 rotates the side of the precision metal piece close to the containing groove 221 to the side away from the containing groove 221, at this time, the second group of image recognition sensors visually detect the surface of the precision metal piece after rotation, so as to realize the full coverage detection of the surface of the precision metal piece.

[0066] With reference to Figure 2 and Figure 3 , the rotating clamping mechanism 4 includes two groups of telescopic members 41, rotating members 42 and clamping plates 43 corresponding to the two ends of the containing groove 221, and the telescopic members 41 are fixed on the inner wall of the containing groove 221, the rotating members 42 are provided as a speed reducer motor, the fixed end of the rotating member 42 is fixed on the telescopic end of the telescopic member 41, and the clamping plate 43 is fixed on the rotating end of the rotating member 42, and the two clamping plates 43 can clamp and fix the precision metal piece falling into the containing groove 221.

[0067] When the rotating cylinder 22 drives the precision metal piece to rotate with the rotating cylinder 22, the telescopic member 41 is pre-elongated, so that the two clamping plates 43 clamp and fix the end of the precision metal piece, at this time, the rotating member 42 rotates, so as to drive the precision metal piece to rotate from the side close to the containing groove 221 to the side away from the containing groove 221, thereby facilitating the visual detection of the second group of image recognition sensors.

[0068] With reference to Figure 2 and Figure 4 , the smearing mechanism 5 includes a liquid storage cylinder 51, a liquid outlet bin 52, a positioning cylinder 53 and a reciprocating pump liquid assembly 54, the liquid storage cylinder 51 is fixedly connected with the rotating cylinder 22 and located in the rotating cylinder 22, the inner wall of the liquid storage cylinder 51 is hollow and provided with a liquid coating for coating the outer surface of the qualified precision metal piece.

[0069] The inner wall of the containing groove 221 is provided with a liquid discharge groove 2211, the length of the liquid discharge groove 2211 is consistent with the length of the precision metal piece, one end of the liquid outlet bin 52 is fixed with the outer bottom wall of the containing groove 221 and communicates with the inner wall through the liquid discharge groove 2211, the positioning cylinder 53 is fixedly connected with the rotating cylinder 22 and located in the liquid storage cylinder 51, the other end of the liquid outlet bin 52 penetrates through the positioning cylinder 53 and is fixedly connected with the positioning cylinder 53;

[0070] The part of the liquid storage cylinder 51 connected with the liquid outlet bin 52 is in communication with each other, and the liquid storage cylinder 51 is provided with a first one-way valve for allowing the liquid coating to enter the liquid outlet bin 52 from the liquid storage cylinder 51 in one direction. The liquid outlet bin 52 is provided with a second one-way valve near the outer wall of the accommodating groove 221 for allowing the liquid coating to enter the accommodating groove 221 from the liquid outlet bin 52 in one direction.

[0071] The liquid outlet bin 52 is arranged through one end of the positioning cylinder 53, and the reciprocating pump liquid assembly 54 is partially inserted into the liquid outlet bin 52 for automatically pumping the liquid coating in the liquid storage cylinder 51 into the accommodating groove 221.

[0072] Referring to Figure 4 and Figure 5 , the reciprocating pump liquid assembly 54 is provided with a one-way locking assembly 6 for controlling the start of the reciprocating pump liquid assembly 54. When the driving assembly 23 drives the rotating cylinder 22 to rotate from the discharge port to the classification and discharging mechanism 3, the reciprocating pump liquid assembly 54 stops working. When the driving assembly 23 drives the rotating cylinder 22 to rotate from the classification and discharging mechanism 3 to the discharge port, the one-way locking assembly 6 controls the reciprocating pump liquid assembly 54 to work.

[0073] A plurality of heating elements 212 for heating and curing the surface of the precision metal part after coating the protective layer are arranged between the two groups of image recognition sensors. The heating element 212 adopts an electric heating wire.

[0074] When the driving assembly 23 drives the rotating cylinder 22 to rotate, the liquid outlet bin 52 and the positioning cylinder 53 rotate together. When rotating from the discharge port to the classification and discharging mechanism 3, the driving assembly 23 does not drive the reciprocating pump liquid assembly 54 to work. When the two groups of image recognition sensors complete the visual detection of the surface of the precision metal part, and the surface of the precision metal part has no defects, the driving assembly 23 drives the rotating cylinder 22 to rotate reversely. When rotating from the classification and discharging mechanism 3 to the discharge port, the driving assembly 23 drives the reciprocating pump liquid assembly 54 to work, so as to coat the protective layer on the surface of the precision metal part. The protective layer is heated and cured under the action of the heating element 212.

[0075] When the coating on all positions of the surface of the precision metal part is completed, the two groups of image recognition sensors again perform visual detection on the coated coating, and realize classification and discharging of the precision metal part according to whether there is a defect in the coating.

[0076] Referring to Figure 4 and Figure 5The reciprocating pump liquid assembly 54 comprises a rotating shaft 541, a driving gear 542, a driven gear 543, a connecting rod 544 and a piston 545, the rotating shaft 541 is coaxially fixed on the axis of the rotating cylinder 22 and is in transmission connection with the driving assembly 23, the driving gear 542 is coaxially fixed on the rotating shaft 541, the driven gear 543 is rotatably installed in the rotating cylinder 22 and is in meshing connection with the driving gear 542, one end of the connecting rod 544 is in eccentric rotation connection with the end face of the driving gear 542, the other end is in rotation connection with the end face of the piston 545, and the piston 545 is slidingly and sealingly arranged in the liquid outlet bin 52.

[0077] When the driving assembly 23 drives the rotating shaft 541 to rotate, the driving gear 542 drives the driven gear 543 to rotate, the driven gear 543 drives the piston 545 to make reciprocating motion through the connecting rod 544, so that the liquid coating in the liquid storage cylinder 51 is sprayed to the outer surface of the precision metal part in contact with the top of the containing groove 221 through the liquid outlet bin 52, the surface of the precision metal part is coated, and the outer surface is protected in cooperation with the heating part 212.

[0078] In order to more uniformly coat the liquid coating on the peripheral wall of the precision metal part, referring to Figure 6 and Figure 7 , sponge strips 2212 are installed on the two side walls of the liquid discharge groove 2211 in the length direction, the sponge strips 2212 have particularly small pore channels inside, the liquid coating sprayed by the liquid outlet bin 52 enters the two sponge strips 2212, and the containing groove 221 is provided with two groups of scraping mechanisms 7 on the inner wall of the corresponding rotating cylinder 22, the two groups of scraping mechanisms 7 are symmetrically arranged about the liquid discharge groove 2211 and oppositely arranged, and the scraping mechanism 7 can transfer the liquid coating in the sponge strip 2212 and uniformly coat the peripheral wall of the precision metal part by following the rotation of the rotating part 42.

[0079] Referring to Figure 6 and Figure 7 , the scraping mechanism 7 comprises a connecting gear 71, a gear column 72, a sliding seat 73, a threaded rod 74 and a brush 75, the connecting gear 71 is coaxially fixed on the output end of the rotating part 42, the gear column 72 is rotatably installed in the inner wall of the corresponding rotating cylinder 22 of the containing groove 221, the connecting gear 71 is in sliding meshing connection with the gear column 72, the sliding seat 73 is slidingly and clippingly installed in the liquid discharge groove 2211 and can slide along the length direction of the liquid discharge groove 2211, the threaded rod 74 is coaxially fixed on the end portion of the gear column 72, a through threaded groove 731 is formed in the sliding seat 73 corresponding to the threaded rod 74, the threaded rod 74 is in threaded rotation connection with the threaded groove 731, and the brush 75 is fixedly installed on the side of the sliding seat 73 away from the liquid discharge groove 2211.

[0080] Referring to Figure 6 and Figure 7, the threads of the two threaded rods 74 of the two scraping mechanisms 7 are oppositely arranged, or the ends of the two threaded rods 74 are integrally connected to each other, in this embodiment, the ends of the two threaded rods 74 are integrally connected, so that the two sliding seats 73 can move close to or away from each other along the drainage groove 2211, and in the sliding process, the two side walls are in sliding fit with the corresponding sponge strips 2212, a plurality of porous flow channels 732 are spaced apart in the two sliding seats 73, one end of the porous flow channel 732 penetrates the surface in sliding fit with the sponge strip 2212, and the other end extends to the plane where the bristles 75 are located, so that the liquid coating in the sponge strip 2212 can be transferred to the bristles 75 through the porous flow channel 732 during the movement of the two sliding seats 73, and the surface of the precision metal part is more evenly coated by the bristles 75, so that the coating quality of the liquid coating is better.

[0081] With reference to Figure 5 and Figure 8 , the one-way locking assembly 6 comprises a rotating disc 61, a locking piece 62 and an elastic piece 63, the rotating disc 61 is coaxially connected with the driven gear 543, the driven gear 543 is rotatably installed outside the rotating disc 61, the end of the connecting rod 544 is eccentrically rotatably connected with the rotating disc 61, and the inner wall of the driven gear 543 is circumferentially surrounded by the one-way clamping teeth 5431.

[0082] The rotating disc 61 is provided with a mounting groove on the wheel surface, one end of the locking piece 62 is rotatably installed on the inner wall of the mounting groove, the other end is connected with the elastic piece 63, and the locking piece 62 can be extended into the one-way clamping teeth 5431 of the driven gear 543 under the action of the elastic piece 63, the elastic piece 63 is a spring, and the locking piece 62 is a locking block, and the end can be one-way clamped and fixed with the one-way clamping teeth 5431.

[0083] When the driving assembly 23 drives the rotating cylinder 22 to rotate from the discharge port to the classification and discharging mechanism 3, the locking piece 62 is rotatably connected with the one-way clamping teeth 5431, and when the driving assembly 23 drives the rotating cylinder 22 to rotate from the classification and discharging mechanism 3 to the discharge port, the locking piece 62 is clamped and fixed with the one-way clamping teeth 5431.

[0084] The containing grooves 221 on the outer wall of the rotating cylinder 22 are provided with two, when one of the containing grooves 221 rotates to the position of the image recognition sensor passing through the classification and discharging mechanism 3, the other containing groove 221 rotates to the position opposite to the discharge port.

[0085] The position sensor 211, the reciprocating pump liquid assembly 54 and the one-way locking assembly 6 are correspondingly arranged, and the locking and unlocking states of the two one-way locking assemblies 6 are opposite.

[0086] When the rotating cylinder 22 rotates from the discharge port to the classification and discharging mechanism 3, the locking member 62 is rotationally connected with the one-way clamping tooth 5431, at this time, the main and driven gears can only drive the one-way clamping tooth 5431 to rotate, but cannot drive the driven gear 543 to rotate, so the piston 545 cannot reciprocate, at this time, the protective layer cannot be sprayed on the surface of the precision metal piece;

[0087] When the rotating cylinder 22 rotates from the classification and discharging mechanism 3 to the discharge port, at this time, the locking member 62 is fixedly connected with the one-way clamping tooth 5431, at this time, the main and driven gears drive the driven gear 543 to rotate, and the piston 545 reciprocates, thereby spraying the protective layer on the surface of the precision metal piece, and achieving the surface protection of the precision metal piece.

[0088] The two sets of position sensors 211, reciprocating pump liquid assemblies 54 and one-way locking assemblies 6 can realize the staggered discharging, staggered visual detection and staggered protective layer coating of the two precision metal pieces, thereby greatly improving the efficiency of visual detection and subsequent processing.

[0089] Referring to Figure 1 and Figure 2 , the classification and discharging mechanism 3 includes a discharging and sorting bin 31, a sorting conveying belt 32 and a sorting and collecting channel 33, the discharging and sorting bin 31 is used for sorting the precision metal pieces in the two containing grooves 221 after visual detection into qualified and unqualified ones, the sorting conveying belt 32 is used for classifying and conveying the qualified and unqualified precision metal pieces, and the sorting and collecting channel 33 is used for classifying and collecting the qualified and unqualified precision metal pieces conveyed by the sorting conveying belt 32.

[0090] Referring to Figure 1 and Figure 2 , the discharging and sorting bin 31 includes a discharging bin 311 and two classification bins 312, the discharging bin 311 is provided with an opening at the top, and the two classification bins 312 are hollow and provided with openings at two ends, one end of the two classification bins 312 is communicated with the discharging bin 311, and the other end corresponds to the sorting conveying belt 32.

[0091] Referring to Figure 1 and Figure 2 , the discharging bin 311 is rotationally provided with a sorting plate and a rotating member for driving the sorting plate to rotate towards the two discharging bins 311, the rotating member is an electric motor, when the rotating member rotates, the precision metal pieces falling into the discharging bin 311 from the top of the discharging bin 311 can fall into the corresponding classification bin 312 through the sorting plate.

[0092] The sorting conveying belt 32 is provided with two corresponding discharging bins 311, and the conveying directions of the two sorting conveying belts 32 are opposite, the sorting and collecting channel 33 includes a discharging channel 331 and a collecting frame 332 arranged in the discharging channel 331.

[0093] The blanking sorting bin 31 can sort the precision metal pieces in the two containing grooves 221 after visual detection, the sorting conveying belt 32 can classify and convey the precision metal pieces, and the sorting collection channel 33 can classify and collect the precision metal pieces conveyed by the sorting conveying belt 32.

[0094] When the containing groove 221 is rotated to be opposite to the top of the blanking bin 311, the telescopic part 41 is retracted at this time, and the precision metal piece is blanked into the blanking bin 311. Under the driving of the rotating part, the sorting plate blanks the precision metal piece into the corresponding classification bin 312, and the sorting conveying belt 32 sorts and processes the precision metal pieces.

[0095] The precision metal pieces from different classification bins 312 are conveyed to different blanking channels 331 by different sorting conveying belts 32, and then fall into the corresponding collection frame 332 through the corresponding blanking channel 331, so as to realize the classification and collection of the precision metal pieces.

[0096] The implementation principle of the visual detection equipment for precision metal piece processing is that the driving assembly 23 can drive the rotating cylinder 22 to reciprocate 180 degrees, and in the rotating process, the precision metal piece falling into the containing groove 221 from the blanking hopper 11 can rotate with the rotating cylinder 22. In this process, the rotating detection mechanism 2 can visually detect the surface of the precision metal piece rotated by the rotating clamping mechanism 4.

[0097] When a defect is detected, the rotating detection mechanism 2 drives the precision metal piece to be blanked by the classification blanking mechanism 3. When no defect is detected, the rotating detection mechanism 2 drives the precision metal piece to rotate in the opposite direction. At this time, the smearing mechanism 5 can automatically coat the outer surface of the precision metal piece with a coating;

[0098] When the precision metal piece is rotated to the classification blanking mechanism 3 again through the blanking port, the rotating detection mechanism 2 can visually detect the coating and classify and blank the coating with defects and no defects through the classification blanking mechanism 3.

[0099] The whole process can efficiently realize the full-automatic detection of the outer surface of the precision metal piece and the simultaneous processing and detection of the subsequent coating, realize efficient integrated processing, and greatly improve the efficiency of visual detection and subsequent processing of the precision metal piece.

[0100] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A visual inspection apparatus for precision metal part processing, for inspecting and processing a hollow cylindrical precision metal part, characterized by: The application relates to a processing table (1) which is sequentially provided with a blanking hopper (11) for single and sequential blanking of precision metal pieces, a rotating detection mechanism (2) for rotating visual detection of the blanked precision metal pieces and a classified blanking mechanism (3) for classification and blanking of the qualified and unqualified precision metal pieces. The rotating detection mechanism (2) comprises a fixed cylinder (21), a rotating cylinder (22), a driving assembly (23) and a visual detection assembly (24), the fixed cylinder (21) is installed on the processing table (1), the blanking hopper (11) is fixed on the top of the fixed cylinder (21), the bottom of the blanking hopper (11) is provided with a blanking port which is communicated with the inner cavity of the fixed cylinder (21), the rotating cylinder (22) is coaxially and rotatably installed in the fixed cylinder (21), and the outer peripheral wall is provided with containing grooves (221) for containing the precision metal pieces; the rotating cylinder (22) is provided with a rotating and clamping mechanism (4) on the outer wall corresponding to the containing grooves (221) for clamping and rotating the precision metal pieces falling into the containing grooves (221). The driving assembly (23) is used for driving the rotating cylinder (22) to reciprocating rotate by 180 degrees, so that the containing grooves (221) can be rotated from the blanking port to the classified blanking mechanism (3); during the rotation of the containing grooves (221) from the blanking port to the classified blanking mechanism (3), the rotating and clamping mechanism (4) is used for rotating the precision metal pieces by one circle. The rotating cylinder (22) is provided with a smearing mechanism (5) for coating a protective layer on the outer surface of the qualified precision metal pieces detected by the visual detection assembly (24); the smearing mechanism (5) is used for automatically smearing the surface of the precision metal pieces when the rotating cylinder (22) is reversely rotated after passing through the visual detection assembly (24).

2. The visual inspection apparatus for precision metal part processing according to claim 1, wherein: The visual detection assembly (24) comprises two groups of image recognition arrays arranged on the inner wall of the fixed cylinder (21), the two groups of image recognition arrays are respectively located near the blanking port and near the classified blanking mechanism (3), each group of image recognition arrays comprises two rows of arrays composed of a plurality of image recognition sensors, and the two groups of image recognition arrays can respectively perform image recognition on the surface of the rotating precision metal pieces. The fixed cylinder (21) is provided with a position sensor (211) for detecting the position of the precision metal pieces after being recognized by the two groups of image recognition arrays, the position sensor (211) is located between the image recognition sensor array near the classified blanking mechanism (3) and the classified blanking mechanism (3).

3. The vision inspection apparatus for precision metal part processing of claim 1, wherein: The rotating clamping mechanism (4) comprises telescopic pieces (41), rotating pieces (42) and clamping plates (43), two groups of the telescopic pieces (41), rotating pieces (42) and clamping plates (43) are symmetrically arranged corresponding to two ends of the accommodating groove (221), the telescopic piece (41) is fixed on the inner wall of the accommodating groove (221), the fixed end of the rotating piece (42) is fixed on the telescopic end of the telescopic piece (41), the clamping plate (43) is fixed on the rotating end of the rotating piece (42), and the two clamping plates (43) can clamp and fix the precision metal pieces falling into the accommodating groove (221).

4. The visual inspection apparatus for precision metal part processing of claim 2, wherein: The coating mechanism (5) comprises a liquid storage cylinder (51), a liquid outlet bin (52), a positioning cylinder (53) and a reciprocating pump liquid assembly (54), the liquid storage cylinder (51) is fixedly connected with the rotating cylinder (22) and located in the rotating cylinder (22), the inner wall of the liquid storage cylinder (51) is hollow and provided with a liquid coating for coating the qualified precision metal outer surface; One end of the liquid outlet bin (52) is fixed with the outer bottom wall of the accommodating groove (221) and communicates with the inner wall, the positioning cylinder (53) is fixedly connected with the rotating cylinder (22) and located in the liquid storage cylinder (51), the other end of the liquid outlet bin (52) penetrates through the positioning cylinder (53) and is fixedly connected with the positioning cylinder (53); The part connected with the liquid outlet bin (52) of the liquid storage cylinder (51) communicates with each other, the liquid storage cylinder (51) is provided with a first one-way valve for allowing the liquid coating to enter the liquid outlet bin (52) from the liquid storage cylinder (51) in one direction, and the liquid outlet bin (52) is provided with a second one-way valve near the position of the outer wall of the accommodating groove (221) for allowing the liquid coating to enter the accommodating groove (221) from the liquid outlet bin (52) in one direction; The end opening of the liquid outlet bin (52) penetrates through the positioning cylinder (53), the reciprocating movement end of the reciprocating pump liquid assembly (54) is partially inserted into the liquid outlet bin (52) for automatically pumping the liquid coating in the liquid storage cylinder (51) into the accommodating groove (221); The one-way locking assembly (6) is arranged at the reciprocating pump liquid assembly (54) for controlling the start of the reciprocating pump liquid assembly (54), when the driving assembly (23) drives the rotating cylinder (22) to rotate from the discharging port to the classified discharging mechanism (3), the reciprocating pump liquid assembly (54) stops working, when the driving assembly (23) drives the rotating cylinder (22) to rotate from the classified discharging mechanism (3) to the discharging port, the one-way locking assembly (6) controls the reciprocating pump liquid assembly (54) to work; A plurality of heating pieces (212) for heating and curing the surface of the precision metal piece after coating the protective layer are arranged between the two groups of image recognition sensors.

5. The visual inspection apparatus for precision metal part processing of claim 4, wherein: The reciprocating pump liquid assembly (54) comprises a rotating shaft (541), a driving gear (542), a driven gear (543), a connecting rod (544) and a piston (545), the rotating shaft (541) is coaxially fixed on the axis of the rotating cylinder (22) and is in transmission connection with the driving assembly (23), the driving gear (542) is coaxially fixed on the rotating shaft (541), the driven gear (543) is rotatably installed in the rotating cylinder (22) and is in meshing connection with the driving gear (542), one end of the connecting rod (544) is eccentrically rotatably connected with the end face of the driving gear (542), the other end is rotatably connected with the end face of the piston (545), and the piston (545) is slidably and sealingly arranged in the liquid outlet bin (52).

6. The vision inspection apparatus for precision metal part processing of claim 5, wherein: The one-way locking assembly (6) comprises a rotating disc (61), a locking piece (62) and an elastic piece (63), the rotating disc (61) is coaxially connected with the driven gear (543), and the driven gear (543) is rotatably installed outside the rotating disc (61), the end of the connecting rod (544) is eccentrically rotatably connected with the rotating disc (61), and the inner wall of the driven gear (543) is circumferentially provided with one-way clamping teeth (5431); The rotating disc (61) is provided with a mounting groove on the wheel surface, one end of the locking piece (62) is rotatably installed on the inner wall of the mounting groove, the other end is connected with the elastic piece (63), and can be extended into the one-way clamping teeth (5431) of the driven gear (543) under the action of the elastic piece (63); When the driving assembly (23) drives the rotating cylinder (22) to rotate from the discharge port to the classification discharge mechanism (3), the locking piece (62) is rotatably connected with the one-way clamping teeth (5431), and when the driving assembly (23) drives the rotating cylinder (22) to rotate from the classification discharge mechanism (3) to the discharge port, the locking piece (62) is fixedly connected with the one-way clamping teeth (5431).

7. The vision inspection apparatus for precision metal part processing of claim 6, wherein: The accommodating grooves (221) on the outer wall of the rotating cylinder (22) are provided with two, when one of the accommodating grooves (221) rotates to the position of the image recognition sensor at the classification discharge mechanism (3), the other accommodating groove (221) rotates to the position opposite to the discharge port; The position sensor (211), the reciprocating pump liquid assembly (54) and the one-way locking assembly (6) are correspondingly arranged, and the locking and unlocking states of the two one-way locking assemblies (6) are opposite.

8. The vision inspection apparatus for precision metal part processing of claim 1, wherein: The classification discharge mechanism (3) comprises a discharge sorting bin (31), a sorting conveying belt (32) and a sorting collection channel (33), the discharge sorting bin (31) is used for sorting the precision metal pieces in the two accommodating grooves (221) after visual detection, the sorting conveying belt (32) is used for classifying and conveying the precision metal pieces, and the sorting collection channel (33) is used for classifying and collecting the precision metal pieces conveyed by the sorting conveying belt (32).

9. The visual inspection apparatus for precision metal part processing of claim 8, wherein: The blanking sorting bin (31) comprises a blanking bin (311) and classification bins (312), the blanking bin (311) is provided with an opening at the top, the classification bins (312) are provided with two, the classification bins (312) are hollow and provided with openings at two ends, one end of the classification bins (312) is communicated with the blanking bin (311), and the other end is corresponded to the sorting conveying belt (32); The blanking bin (311) is rotatably provided with a sorting plate and a rotating member for driving the sorting plate to rotate towards the blanking bin (311), when the rotating member rotates, the precision metal parts falling into the blanking bin (311) from the top of the blanking bin (311) can fall into the corresponding classification bin (312) through the sorting plate.

10. The visual inspection apparatus for precision metal part processing of claim 9, wherein: The sorting conveying belt (32) is provided with two corresponding to the blanking bin (311), and the conveying directions of the sorting conveying belts (32) are opposite, and the sorting collecting channel (33) comprises a blanking channel (331) and a collecting frame (332) arranged at the bottom of the blanking channel (331).

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