CN111929308A - Mobile phone iron frame appearance defect detection system - Google Patents

Abstract

The invention discloses an appearance defect detection system of a mobile phone iron frame. The good product reclaiming station, the third inspection station and the defective product reclaiming station are arranged between the second inspection station and the good product reclaiming station; the first inspection station and the second inspection station are respectively equipped with CCD vision Component A and CCD vision component B, the third detection station is equipped with a CCD line scanning visual detection component; a four-station indexing plate is rotatably set on the inspection table, and there are four fixtures on the four-station indexing plate , The rotation of the four-station indexing plate can make each jig switch between the second inspection station, the third inspection station, the good product reclaiming station and the defective product reclaiming station in turn. It can meet the requirements of mobile phone iron frame appearance defect detection indicators, realize online rapid detection, improve detection efficiency and quality, and system reliability and stability are excellent.

Description

Mobile phone iron frame appearance defect detection system

technical field

The invention relates to the technical field of mobile phone parts detection, in particular to a mobile phone iron frame appearance defect detection system.

Background technique

The iron frame is one of the important parts of the backlight module of the mobile phone. It is usually necessary to make holes on the iron frame corresponding to the camera position. The quality defects of the holes will directly affect the visual effect and reduce the user experience. In addition, the surface of the iron frame The flatness also directly affects the installation effect of other parts of the mobile phone, and the surface of the iron frame is easily deformed during the stamping process to produce bumps. Therefore, in the production process, the through holes on the iron frame and the surface of the iron frame must be tested to prevent secondary The product enters the final assembly line.

In the prior art, manual sampling detection is mostly used, which has low detection efficiency and poor reliability. In addition, since the through holes on the iron frame are punched, the flanging part after punching forms a raised circle on the surface of the iron frame. Whether the edge of the ring or the ring is cracked and deformed, or whether the root of the through hole is cracked to produce small holes, and whether there are bumps or dirt on the surface of the iron frame, these are the indicators that need to be detected, which makes it difficult to use some existing visual inspection equipment. Therefore, there is an urgent need for a device that can quickly detect the quality of the iron frame of the mobile phone, which can complete the appearance detection index, and at the same time improve the detection efficiency and reliability, and meet the needs of automated production.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a system for detecting the appearance defects of the iron frame of the mobile phone, which can realize the rapid detection of the appearance quality of the iron frame of the mobile phone and improve the detection efficiency.

For achieving the above object, the technical scheme of the present invention is as follows:

A mobile phone iron frame appearance defect detection system, the key of which is that it includes a detection table, and a delivery line and a good product line set corresponding to the detection table, and the detection table has a one-to-one correspondence with the delivery line and the good product line. Inspection manipulator and good product manipulator, wherein the position corresponding to the inspection manipulator on the inspection table is provided with a first inspection station and a second inspection station, and the corresponding good product manipulator is provided with a good product reclaiming station, the second inspection station and the good product There is a third inspection station and a defective reclaiming station between the reclaiming stations;

The first detection station and the second detection station are respectively provided with a CCD visual component A and a CCD visual component B, and the third detection station is provided with a CCD line scan visual detection component;

A four-station indexing plate is rotatably arranged on the inspection table, and the four-station indexing plate has four jigs. Switch between the second inspection station, the third inspection station, the good product reclaiming station and the defective product reclaiming station.

Using the above scheme, the appearance defect detection of the iron frame of the mobile phone is mainly completed in three inspection stations. The CCD vision component A is used to detect the inner crack of the hole, and the CCD vision component B is used to detect the edge of the punched through-hole ring. Appearance quality, CCD line scanning visual inspection component to detect the concavity and convexity of the outer surface of the iron frame, to meet the three appearance inspection requirements of the iron frame, and through the four-station indexing plate, online inspection is realized, which greatly improves the inspection efficiency and reliability.

Preferably: the inspection-submission line and the good-quality production line are located on the opposite sides of the detection table, respectively, and the second detection station, the third detection station, the good-quality reclaiming station and the defective-reclaiming station are in a circle in sequence. array distribution. The above arrangement is beneficial to improve the overall compactness of the system, and the good product reclaiming station is arranged next to the third detection station, which is beneficial to improve the operation efficiency.

Preferably: the CCD line scan visual inspection component includes a line scan camera and a line scan light source located above the detection stage;

The four jigs are distributed in a circular array on the four-station indexing plate, and are slidably matched with the four-station indexing plate. The inspection table is provided with a linear drive mechanism corresponding to the third inspection station. The jig can move linearly along the inspection table under the drive of the linear drive mechanism, and the moving distance is at least greater than the width of the iron frame to be inspected. With the above solution, the jig is moved by the linear drive mechanism, even if the line scan camera can complete all the scans on the surface of the iron frame, the inspection quality is relatively improved, and the travel distance of the linear mechanism can be adjusted as needed to adapt to different sizes of iron frames.

Preferably: the linear drive mechanism includes a push rod facing the center of the four-station indexing plate, and a screw motor for driving the push rod to move linearly, and a mounting seat is provided in the middle of the four-station indexing plate , an elastic reset structure is arranged between each fixture and the mounting seat. Using the above scheme, the screw motor drives the push rod to move forward, which is beneficial to ensure the stability of the push rod. The elastic reset structure can reset the fixture after scanning, without affecting the operation of other stations.

Preferably, the fixtures are all vacuum adsorption fixtures, and a rotary air supply head is arranged in the middle of the four-station indexing plate. Adopting the above scheme is beneficial to ensure the stability of the iron frame on the fixture, prevent the indexing plate from rotating and throw the iron frame out, and at the same time reduce the relative vibration of the iron frame, which is beneficial to improve the detection effect.

Preferably, the inspection line, the first inspection station and the second inspection station are distributed at an angle of 90 degrees in sequence, and the inspection manipulator includes a cantilever bracket rotatably installed on the inspection table, and a For the servo motor A that drives the cantilever support to rotate horizontally, the cantilever support has two horizontally arranged and orthogonally distributed suction cups A, each suction cup A is equipped with a sliding table cylinder, and the sliding table cylinder is vertically downward. . The inspection line, the first inspection station and the second inspection station adopt the above distribution methods, and cooperate with the inspection robot structure, which is beneficial to improve the inspection efficiency and reduce the waiting time.

Preferably: the first detection station is provided with a placing table, the CCD vision assembly A includes an area array camera A and a surface light source located on the upper and lower sides of the placing table, respectively, and the area array camera A and the surface light source are arranged obliquely, The area scan camera A is equipped with a lens, and the area light source is close to one end of the placing table. Adopting the above scheme is beneficial to improve the detection of cracks inside the hole, and does not hinder the normal taking and unloading of materials.

Preferably, the CCD vision assembly B includes a ring light source and an area scan camera B, the ring light source and the area scan camera B are sequentially arranged below the four-station indexing plate, and the area scan camera B is vertically upward. The adoption of the above scheme is beneficial to reduce the space occupation above the inspection table, and on the premise of not hindering the normal rotation of the indexing plate, the annular light source is used to improve the appearance inspection quality of the edge of the punched through-hole ring.

Preferably, a feeding unit is arranged at one end of the inspection line away from the inspection table, and the feeding unit includes a feeding table, a feeding turntable rotatably mounted on the feeding table, and a feeding turntable for driving the feeding table. The servo motor B that rotates the feeding turntable;

The loading table is provided with a loading manipulator at a position close to the inspection line, the loading turntable is provided with at least two silos with open tops, and the bottom of the silos has a lifting opening, and the bottom of the loading table corresponds to The feeding manipulator is provided with a lifting and feeding mechanism.

Using the above scheme, when using, place multiple iron frames to be inspected in the silo, and use the feeding manipulator to grab them in turn and place them on the inspection line. The frame is lifted in real time to ensure that the top iron frame is always at a fixed height, so that the feeding manipulator can grab it. The next silo corresponds to the grabbing position of the feeding manipulator, and employees or machinery can supplement the emptied silo, which is beneficial to improve the inspection efficiency and meet the needs of large-scale inspection.

Preferably, the defective product reclaiming station is provided with a defective product manipulator, and the feeding manipulator, the good product manipulator and the defective product manipulator are all 180° rotating double suction cup manipulators. The adoption of the above scheme is beneficial to improve the operation efficiency of each station, and the manufacturing cost is low, and the implementation is convenient.

Compared with the prior art, the beneficial effects of the present invention are:

The application of the mobile phone iron frame appearance defect detection system provided by the invention can meet the requirements of the mobile phone iron frame appearance defect detection index, and can realize online rapid detection, improve the detection efficiency and quality, and the system reliability and stability are excellent.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the side view of the present invention;

Fig. 3 is the top view of the present invention;

Fig. 4 is the structural representation of the feeding turntable;

Figure 5 is a schematic structural diagram of a jacking and feeding mechanism;

Fig. 6 is the structural representation of the inspection pipeline;

Fig. 7 is the structural representation of the inspection robot;

FIG. 8 is a schematic structural diagram of the CCD vision assembly A;

Fig. 9 is the structural representation of CCD vision assembly B;

Figure 10 is a schematic diagram of the installation structure of the CCD line scanning visual inspection component and the four-station indexing plate;

FIG. 11 is a schematic structural diagram of a linear drive mechanism.

Detailed ways

The present invention will be further described below with reference to the embodiments and the accompanying drawings.

Referring to the appearance defect detection system of the mobile phone iron frame shown in FIG. 1 and FIG. 11 , it mainly includes an inspection station 100 , and an inspection assembly line 110 and a good product assembly line 120 set corresponding to the inspection station 100 . The inspection station 100 corresponds to the inspection assembly line 110 and 120 . The good product assembly line 120 is respectively provided with the inspection robot 200 and the inspection robot 300. At the same time, the position corresponding to the inspection robot 200 on the inspection table 100 is provided with a first inspection station 130 and a second inspection station 140, corresponding to the inspection robot. 300 is provided with a reclaiming station 150 for good products, and a third inspection station 160 and a reclaiming station 170 for defective products are arranged between the second inspection station 140 and the reclaiming station 150 for good products.

The first inspection station 130 and the second inspection station 140 are respectively provided with a CCD vision assembly A400 and a CCD vision assembly B500, and the third inspection station 160 is provided with a CCD line scan vision inspection assembly 600, wherein the CCD vision assembly A400 is used for inspection For the side cracks on the inside of the through hole, the CCD vision component B500 is used to detect the appearance quality of the ring edge of the punched through hole on the iron frame, while the CCD line scan vision inspection component 600 mainly completes the detection of the surface concavity and convexity of the iron frame in the form of line scanning. .

The inspection manipulator 200 is mainly used to grab the iron frame to be inspected on the inspection assembly line 110 and place it in the first inspection station 130 to complete one inspection, and the first inspection station 130 to complete the inspection of the iron frame for one inspection. Pick up and place in the second inspection station. The good product manipulator 300 is used to grab the iron frame that is in the good product reclaiming station 150 and has qualified quality and put it into the good product assembly line 120, and the iron frame that does not meet the quality is transferred to the defective product. The material station 170 is processed separately.

In order to improve the detection efficiency, reduce the idle travel of the equipment and the structural complexity, etc., the detection table 100 of the present application is provided with a four-station indexing plate 700 in a rotatable manner. As shown in the figure, on the four-station indexing plate 700 There are four jigs 710. When the four-station indexing plate 700 rotates, each jig 710 can be sequentially selected at the second inspection station 140, the third inspection station 160, the good product picking station 150 and the defective product. Switching between the material stations 170 , that is, each time the four-station indexing plate 700 rotates, drives the jig 710 to move a distance of one station to align it with the next station, so as to perform corresponding station operations.

Referring to FIG. 3 , in this embodiment, the inspection line 110 and the good product line 120 are respectively located on the left and right sides of the inspection table 100 , the second inspection station 140 , the third inspection station 160 , the good product pick-up The material stations 170 are distributed in a circular array in sequence, that is, the angle between the two adjacent stations is 90°, the tangent of the fixture 710 and its distribution circumference are parallel to each other, and the inspection line 110, the first inspection station 130 and the first inspection station 130 are parallel to each other. The two inspection stations 140 are also distributed at an included angle of 90° in sequence, wherein the second inspection station 140 and the inspection assembly line 110 are arranged opposite to each other, and the first inspection station 130 is located on the same side of the two.

On this basis, with reference to FIG. 7 , the inspection robot 200 in this embodiment mainly includes a cantilever bracket 210 rotatably installed on the inspection table 100 , the cantilever bracket 210 is arranged vertically, and the inspection table 100 is equipped with a The servo motor A211 drives the cantilever bracket 210 to rotate horizontally. The top of the cantilever bracket 210 has two cantilever arms 214 that are perpendicular to each other and are integrally formed. The air cylinders 213 are all vertically downward, the suction cups A212 are arranged horizontally, and the suction cups A212 are arranged along the width direction of the respective cantilevers 214, so the suction cups A212 on the two cantilever arms 214 are perpendicular to each other, and the suction cups A212 are vacuum suction cups. The source is the air control system. When the inspection robot 200 is working, when one of the suction cups A212 is located above the inspection assembly line 110, the other suction cup A212 is located above the first inspection station 130, and after rotating 90°, the two suction cups The A212 is located above the first inspection station 130 and the second inspection station 140 respectively. During the operation, the two suction cups A212 are used to suck and release the iron frame to be inspected, which greatly improves the inspection efficiency.

8 and 9 again, in this embodiment, a modular installation structure is adopted as much as possible to improve the assembly and maintainability of the system. As shown in the figure, the first inspection station 130 is located in a base plate with a detachable arrangement. A132, the substrate A132 is generally Z-shaped, and its two ends are respectively provided with a front stand 133 and a rear stand 134, the two stands are staggered by a certain distance in the width direction, and the top of the front stand 133 has a horizontally arranged placement table 131. During the inspection, the inspection robot 200 grabs the iron frame to be inspected on the inspection assembly line 110 and places it on the placing table 131 for the first inspection.

The CCD vision assembly A400 includes an area scan camera A410 and a surface light source 420 located on the upper and lower sides of the placing table 131 respectively. The area scan camera A410 and the surface light source 420 are arranged obliquely, wherein the area scan camera A410 is equipped with a lens 430, and the area light source 420 is close to the placing table. One end of 131, as shown in the figure, the area scan camera A410 is fixed on the rear stand 134 in an inclined downward manner, and the surface light source 420 is fixed on the front stand 133 through the L-shaped bracket 135, so that the When assembling the first inspection station 130, it is only necessary to complete the installation of the placement table 131 and the CCD vision assembly A400 on the substrate A132, and then fix the whole to the inspection table 100 and connect the lines, which is beneficial to improve the system assembly. efficiency.

Similarly, the CCD vision assembly B500 mainly includes a substrate B530, a ring light source 510 and an area scan camera B520 mounted on the substrate B530. As shown in the figure, the CCD vision assembly B500 is located under the four-station indexing plate 700 as a whole, and Preferably, the ring light source 510 is a bowl lamp, which is fixed and supported above the substrate B530 through the upper vertical plate 540 , and the area scan camera B510 is fixed under the substrate B530 through the lower vertical plate 550 , and is vertically upward and coaxial with the ring light source 510 Setting, a via hole 531 is opened on the substrate B530 at the position facing the front-line camera B510. When constructing the second inspection station 140, it is only necessary to fix the substrate B530 on the inspection table 100 and connect the pipeline. .

1 to 3, 10 and 11, the CCD line scan vision inspection assembly 600 in the present application mainly includes a line scan camera 610 and a line scan light source 620 located above the inspection table 100. As shown in the figure, the CCD line scan vision The detection assembly 600 is installed above the detection table 100 through the uprights 630 , the line scan light source 620 is a lamp board structure to reduce the shadow area, and is located directly above the third detection station 160 , and the line scan camera 610 is inclined downward.

The third detection station 160 is mainly used to complete the detection of the surface unevenness of the iron frame to be inspected. Therefore, when the line scanning method is used for detection, relative movement between the scanning line and the iron frame to be inspected is required during the detection process. In order to ensure that the entire surface scanning is completed, if the CCD line scanning visual inspection assembly 600 is moved, its vibration frequency will be greatly increased, and the inspection quality will be reduced. Therefore, in this application, the method of moving the iron frame to be inspected is preferred. As shown in the figure, four The fixtures 710 are distributed in a circular array on the four-station indexing plate 700, and are slidably matched with the four-station indexing plate 700. The inspection table 100 is provided with a linear drive mechanism 720 corresponding to the third inspection station 160, so as to control The tool 710 can move linearly under the driving of the linear drive mechanism 720, and its moving distance is at least greater than the width of the iron frame to be inspected. The driving jig 710 moves outward, so that all the iron frames placed on it can pass through the scanning line. On the contrary, when the scanning line is located inside the jig 710, the linear driving mechanism 720 is used to drive the jig 710 to move toward the surface. move within.

Its specific structure is shown in the figure. In this embodiment, the four-station indexing plate 700 is generally a symmetrical cross-fork structure. The bottom of the inspection table 100 is provided with a servo motor C for driving the four-station indexing plate 700 to rotate. The position indexing plate 700 has two guide rails A770 symmetrically arranged corresponding to each fixture 710. The guide rails A770 are arranged along the radial direction of the rotation circle of the four-position indexing plate 700. The fixture 710 is slidingly matched with the corresponding guide rail A770. The middle of the four-station indexing plate 700 is provided with a mounting seat 730 , and the mounting seat 730 is provided with a guide rod 750 corresponding to each fixture 710 , and the fixture 710 is looped on the corresponding guide rod 750 . At the same time, the guide rod 750 The upper sleeve is provided with a return spring 760 , the return spring 760 is located between the fixture 710 and the mounting seat 730 , and a stop head 751 is fixed at the end of the guide rod 750 .

Correspondingly, the linear drive mechanism 720 in this embodiment includes a push rod 721 that is positioned facing the center of the four-station indexing plate 700, and a lead screw motor 722 for driving the push rod 721 to move linearly. The rod motor 722 is arranged horizontally inward, and its screw rod is facing the rotation center of the four-station indexing plate 700, and is equipped with a nut seat 723 that matches it. The left and right sides of the screw rod motor 722 have symmetrically arranged side plates 724. The top of the plate 724 has a guide rail B725 arranged in parallel with the guide rail A770. The guide rail B725 has a push block 726 slidably matched with it. The push block 726 is fixedly connected with the nut seat 723, and the push rod 721 is fixed on the push block 726 and is facing each other. When the tool 710 is extended, the screw motor 722 works, pushes the push rod 721 to move forward smoothly, the push rod 721 pushes the facing fixture 710 to slide inward, and completes the entire surface scanning, the return spring 760 is always in a compressed state, and the scanning is completed After that, the screw motor 722 is reversed, the push rod 721 returns to the initial position, and the fixture 710 is quickly reset under the action of the return spring 760 .

In order to prevent the iron frame placed on it from being dislocated or falling off during the rotation of the four-station indexing plate 700 and the movement of the jig 710, the jig 710 in this embodiment is preferably a vacuum adsorption type jig. The central mounting seat 730 of the indexing plate 700 has a rotary air supply head 740 arranged in a rotatable manner, which is mainly used to realize independent control of the vacuum extraction of each fixture 710, prevent pipeline entanglement, and improve its feasibility.

Referring to FIG. 1 to FIG. 6 , the detection system of the present application is further configured with a feeding unit 800, and the feeding unit 800 is close to the end of the inspection line 110 away from the detection table 100. As shown in the figures, the feeding unit 800 mainly includes a feeding table 810, a feeding turntable 820 rotatably mounted on the feeding table 810, and a servo motor B830 for driving the feeding turntable 820 to rotate, and the feeding turntable 820 and the servo motor B830 are respectively located on the feeding table 810. top and bottom sides.

A feeding manipulator 840 is provided on the feeding table 810 near the inspection line 110, and at least two silos 850 with open tops are provided on the feeding turntable 820. The silos 850 are evenly distributed along the circumference of the feeding turntable 820. The bottom of the silo 850 has a lifting port 851, and the bottom of the feeding table 810 is provided with a lifting and feeding mechanism 860 corresponding to the feeding manipulator 840. On the inspection pipeline 110.

The silo 850 is surrounded by four baffles 852, and the bottom of the silo 850 has a movable bottom plate 853. The bottom plate 853 and the opposite baffle plate 852 have a sliding fit structure. The mechanism 860 mainly includes a horizontally arranged push plate 862, and a servo motor D861 for driving the push plate 862 to ascend and descend vertically, wherein the size of the push plate 862 is adapted to the jacking port 851, which can be driven by the servo motor D861 to pass through jacking The port 851 extends into the silo 850, and pushes the bottom plate 853 to move up to adjust the height of the iron frame to ensure that the uppermost iron frame is always at the set height position for the robot to grab.

In this embodiment, the defective product reclaiming station 170 is provided with a defective product manipulator 171. When the iron frame is unqualified, it rotates with the four-station indexing plate 700 to the defective product reclaiming station 170, and then passes through the second The product manipulator 171 grabs and places it into the waste storage box. As shown in Figures 1 to 3, the feeding manipulator 840, the good manipulator 300 and the defective manipulator 171 are all 180° rotating double suction cup manipulators, with two facing and horizontal The provided suction cups B can realize the synchronous operation of one suction and one release, so as to improve the operation efficiency of the corresponding station.

Referring to FIG. 6 , the inspection line 110 is mainly composed of two oppositely arranged rollers 115 and a conveyor belt sleeved on the two rollers 115. The rollers 115 are equipped with a servo motor E114, and the inspection assembly line 110 is arranged in sequence along its length direction. It has a feeding station 111, a shaping station 112 and a reclaiming station 113, wherein the feeding station 111 is close to the feeding unit 800, and there are limit blocks on both sides of the feeding station 111 and the feeding station 113. The two sides of the inspection line 110 corresponding to the shaping station 112 are provided with shaping cylinders 116 which are arranged opposite to each other. The shaping cylinder 116 is connected with an adjustment block. When the iron frame to be inspected is conveyed to the shaping station 112 with the conveying belt, the shaping cylinder 116 pushes and adjusts The block moves inwardly, and the iron frame can be adjusted to keep its posture consistent when it reaches the reclaiming station 113.

Referring to the appearance defect detection system of the mobile phone iron frame shown in FIG. 1 to FIG. 11 , the working process is as follows: first, put a plurality of iron frames to be inspected into the silo 850, and ensure that one of the silo 850 is located in the feeding manipulator 840. Right below a suction cup B, the feeding manipulator 840 grabs the iron frame to be inspected in the silo 850 and puts it into the discharging station 111 of the inspection assembly line 110. The iron frame to be inspected passes through the shaping station 112 and then arrives at the reclaiming station. 113. Grab for the inspection robot 200.

After the inspection robot 200 is rotated 90°, it is placed on the placement table 131, where the first inspection is completed by the CCD vision assembly A400. It should be noted that the position of the placement table 131 is relative to the CCD vision assembly A400. The design requires that the area scan camera A410 can just scan the through hole on the iron frame to be inspected. After the first inspection is completed, the inspection robot 200 still grabs and rotates it by 90°, and then places it just in the first inspection. On the jig 710 of the second inspection station 140, it should be noted here that, as shown in FIG. Make sure the through hole is exposed within the scanning range of the B520 array camera below and complete the second inspection.

The four-station indexing plate 700 rotates to move the iron frame to be inspected that has completed the second inspection to the third inspection station 160 , and completes the linear movement under the action of the linear drive mechanism 720 , and is simultaneously scanned by the CCD line scanning detection assembly 600 Detection, that is, the third scanning detection is completed, and the detection results of the three detection stations are uniformly transmitted to the background processing system. When the frame is in the good product reclaiming station 170, it can be grabbed and placed on the good product assembly line 120 by the good product manipulator 150. On the contrary, if it is a defective product, it will be rotated to the defective product reclaiming station 170 in turn. The defective product manipulator 171 grabs it and puts it into the corresponding storage device.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those of ordinary skill in the art can make a variety of similar It is indicated that such transformations fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a cell-phone chase appearance imperfections detecting system which characterized in that: the detection device comprises a detection table (100), and a delivery inspection production line (110) and a non-defective product production line (120) which are arranged corresponding to the detection table (100), wherein the detection table (100) is provided with a delivery inspection manipulator (200) and a non-defective product manipulator (300) which are in one-to-one correspondence with the delivery inspection production line (110) and the non-defective product production line (120), a first detection station (130) and a second detection station (140) are arranged at positions on the detection table (100) corresponding to the delivery inspection manipulator (200), a non-defective product material taking station (150) is arranged corresponding to the non-defective product manipulator (300), and a third detection station (160) and a defective product material taking station (170) are arranged between the second detection station (140) and the non-defective product material taking station (150);

the first detection station (130) and the second detection station (140) are respectively provided with a CCD visual component A (400) and a CCD visual component B (500), and the third detection station (160) is provided with a CCD line scanning visual detection component (600);

the detection table (100) is provided with a four-station index plate (700) in a rotatable mode, the four-station index plate (700) is provided with four jigs (710), and the four-station index plate (700) rotates to enable the jigs (710) to be sequentially switched among a second detection station (140), a third detection station (160), a good product material taking station (150) and a defective product material taking station (170).

2. The system for detecting appearance defects of mobile phone iron frames according to claim 1, characterized in that: the inspection assembly line (110) and the non-defective product assembly line (120) are respectively located on two sides of the inspection table (100), and the second inspection station (140), the third inspection station (160), the non-defective product material taking station (150) and the defective product material taking station (170) are distributed in a circumferential array mode.

3. The system for detecting appearance defects of mobile phone iron frames according to claim 2, characterized in that: the CCD line scanning visual detection assembly (600) comprises a line scanning camera (610) and a line scanning light source (620) which are positioned above the detection table (100);

four tool (710) are circumference array distribution on quadruplex position graduated disk (700), and with quadruplex position graduated disk (700) sliding fit, it is equipped with linear drive mechanism (720) to detect station (160) corresponding third on platform (100) to detect, tool (710) can be along detecting platform (100) rectilinear movement under the drive of linear drive mechanism (720), and its displacement is greater than the width of waiting to examine the chase at least.

4. The system for detecting appearance defects of mobile phone iron frames according to claim 3, characterized in that: the linear driving mechanism (720) comprises a push rod (721) which is arranged right opposite to the center of the four-station indexing disc (700) and a screw rod motor (722) which is used for driving the push rod (721) to move linearly, the middle part of the four-station indexing disc (700) is provided with a mounting seat (730), and an elastic reset structure is arranged between each jig (710) and the mounting seat (730).

5. The system for detecting appearance defects of mobile phone iron frames according to any one of claims 1 to 4, characterized in that: the jig (710) is a vacuum adsorption jig, and the middle part of the four-station dividing disc (700) is provided with a rotary air supply head (740).

6. The system for detecting appearance defects of mobile phone iron frames according to claim 1, characterized in that: censorship assembly line (110), first detection station (130) and second detection station (140) are ninety degrees contained angle distributions in proper order, censorship manipulator (200) are including installing cantilever (210) on examining test table (100) with rotatable mode and being used for driving this cantilever (210) horizontal rotation's servo motor A (211), have two levels setting on cantilever (210) and be the sucking disc A (212) of orthogonal distribution, each sucking disc A (212) all dispose slip table cylinder (213), slip table cylinder (213) are vertical down.

7. The system for detecting appearance defects of mobile phone iron frames according to claim 1 or 6, wherein: the first detection station (130) is provided with a placing table (131), the CCD visual assembly A (400) comprises an area array camera A (410) and an area light source (420) which are respectively located on the upper side and the lower side of the placing table (131), the area array camera A (410) and the area light source (420) are obliquely arranged, the area array camera A (410) is provided with a lens (430), and the area light source (420) is close to one end portion of the placing table (131).

8. The system for detecting appearance defects of mobile phone iron frames according to any one of claims 1 to 4, characterized in that: CCD vision subassembly B (500) includes annular light source (510) and area array camera B (520), annular light source (510) and area array camera B (520) are located quadruplex position graduated disk (700) below in proper order, area array camera B (510) are vertical upwards.

9. The system for detecting appearance defects of mobile phone iron frames according to any one of claims 1 to 4, characterized in that: a feeding unit (800) is arranged at one end of the inspection line (110) far away from the inspection table (100), and the feeding unit (800) comprises a feeding table (810), a feeding turntable (820) rotatably mounted on the feeding table (810), and a servo motor B (830) for driving the feeding turntable (820) to rotate;

the position that material loading platform (810) is close to censorship assembly line (110) is equipped with material loading manipulator (840), be equipped with two at least open feed bins in top (850) on material loading carousel (820), feed bin (850) bottom has jacking mouth (851), and material loading platform (810) bottom corresponds material loading manipulator (840) and is equipped with jacking feed mechanism (860).

10. The system for detecting appearance defects of mobile phone iron frames according to claim 9, is characterized in that: the defective product taking station (170) is provided with a defective product manipulator (171), and the feeding manipulator (840), the non-defective product manipulator (300) and the defective product manipulator (171) are all 180-degree rotary double-suction-disc manipulators.

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