CN117030714B - Mobile phone middle frame appearance detection mechanism and detection method - Google Patents
Mobile phone middle frame appearance detection mechanism and detection method Download PDFInfo
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- CN117030714B CN117030714B CN202310746644.4A CN202310746644A CN117030714B CN 117030714 B CN117030714 B CN 117030714B CN 202310746644 A CN202310746644 A CN 202310746644A CN 117030714 B CN117030714 B CN 117030714B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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Abstract
The invention relates to a detection mechanism and a detection method for the appearance of a mobile phone middle frame, wherein the detection mechanism comprises a conveying track and supporting frames symmetrically arranged on two sides of the conveying track, a triaxial movement module, a light focusing cover and an image acquisition mechanism are sequentially arranged on the supporting frames, a product jig is arranged on the triaxial movement module, the image acquisition mechanism comprises a semicircular camera hanging plate and a plurality of photographing assemblies arranged on the semicircular camera hanging plate from top to bottom, each photographing assembly comprises a sliding block, an installation seat, a movable seat and a photographing camera, the sliding blocks are detachably connected with the installation seat, the movable seat is in sliding connection with the installation seat, the photographing camera is arranged on the movable seat, and the sliding blocks are in sliding connection with the semicircular camera hanging plate. When the current movement track of the mobile phone middle frame deviates from the preset standard movement track, the deviation can be corrected by adjusting the height and the angle of the photographing camera, and the corrected image is more accurate.
Description
Technical Field
The invention belongs to the technical field of appearance detection, and relates to a mobile phone middle frame appearance detection mechanism and a detection method.
Background
The mobile phone middle frame is an important shell component with a supporting function in the mobile phone, and in the production process, appearance detection is required to be carried out on the side frames and the corners of the mobile phone middle frame in order to reject the defective mobile phone middle frame. The common detection means is that the mobile phone middle frame is placed on a product jig, the mobile phone middle frame is limited by the product jig, the product jig and the mobile phone middle frame are driven to rotate by a motion module, image acquisition is carried out through an image acquisition mechanism in the rotation process of the mobile phone middle frame, the image acquisition of the current mobile phone middle frame is completed when the mobile phone middle frame rotates for one circle, then the acquired image is transmitted to a background computing center, the acquired image is compared with a model preset by the background computing center, and unqualified products are removed. The existing mobile phone middle frame appearance detection equipment needs to be determined by repeatedly adjusting the detection station of the jig, namely searching the optimal detection station of the mobile phone middle frame in the debugging period, the existing detection equipment basically adjusts the position of the jig movement module and adjusts the focal length of the camera, but the equipment still has complicated operation and low efficiency, and the defects that the optimal shooting station cannot be obtained by the individual shooting camera all the time based on the displacement adjustment of the current jig movement module and the adjustment of the focal length of the camera are overcome, and the problem that the optimal shooting station cannot be solved well is solved.
In the existing mobile phone middle frame detection process, when a mechanism with a similar triaxial movement module is adopted to drive a mobile phone middle frame to take pictures at multiple angles, the situation that the shooting cameras cannot take pictures within the optimal shooting distance is still not solved by adjusting the triaxial movement module and the camera focal length, such as replacement of the mobile phone middle frame to be detected with different specifications, the dilemma can not be solved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a detection mechanism and a detection method for the appearance of a mobile phone middle frame, which are integrally improved to further improve the detection effect.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a cell-phone center outward appearance detection mechanism, includes delivery track and the support frame of symmetry setting in delivery track both sides, have set gradually triaxial movement module, snoot and image acquisition mechanism on the support frame, be provided with the product tool on the triaxial movement module, snoot and image acquisition mechanism are all fixed on the support frame through the mounting bracket, image acquisition mechanism is connected with backstage calculation center;
The image acquisition mechanism comprises a semicircular camera hanging plate and a plurality of photographing components which are arranged on the semicircular camera hanging plate from top to bottom, and the semicircular camera hanging plate is fixed on the support frame through the mounting frame;
the photographing assembly comprises sliding blocks, mounting seats, moving seats and photographing cameras, wherein the two sliding blocks are symmetrically arranged on two sides of the mounting seats, the two sliding blocks are detachably connected with the mounting seats, the moving seats are slidably connected with the mounting seats, the photographing cameras are arranged on the moving seats, and the sliding blocks are slidably connected with semicircular camera hanging plates.
As a preferable technical scheme of the invention, a photographing channel is arranged on the light condensing cover, the positions of the photographing components are respectively corresponding to the through holes of the photographing channel, and the images of a plurality of parts of the middle frame of the mobile phone are respectively acquired through the photographing components.
As a preferable technical scheme of the invention, the plurality of photographing components are five and are used for respectively collecting images of five positions of the upper part, the middle lower part and the lower part of the middle frame of the mobile phone.
As a preferable technical scheme of the invention, the semicircular camera hanging plate comprises two semicircular plates, two connecting plates and side plates, wherein two ends of the two semicircular plates are respectively connected through the corresponding connecting plates, the two semicircular plates are both fixed on the side plates, the side plates are fixed on the supporting frame through the mounting frame, and the sliding blocks are movably connected with the corresponding semicircular plates.
As a preferable technical scheme of the invention, a limit groove is formed in one side, far away from the mounting seat, of the sliding block, the thickness of the limit groove is slightly larger than that of the semicircular plate, and the limit groove is movably connected with the corresponding semicircular plate.
As a preferable technical scheme of the invention, the photographing channel comprises a middle through hole and strip-shaped through holes symmetrically arranged at two sides of the middle through hole, the middle through hole corresponds to the position of the product jig, the photographing component positioned in the middle corresponds to the middle through hole, the two photographing components positioned above correspond to the strip-shaped through holes above, and the two photographing components positioned below correspond to the strip-shaped through holes below.
A method for detecting the appearance of a middle frame of a mobile phone comprises the following steps:
s1: the middle frame of the mobile phone to be detected is conveyed to the vicinity of the detection station through a conveying track;
s2: placing the mobile phone middle frame on a product jig capable of moving in three axes, wherein the product jig is arranged on a three-axis movement module, limiting the mobile phone middle frame through the product jig, and driving the mobile phone middle frame to move to a detection photographing position through controlling the three-axis movement module and the product jig;
s3: the method comprises the steps of opening a light source to supplement light for a mobile phone middle frame, controlling the mobile phone middle frame to move in one or more directions through controlling a triaxial movement module, and collecting images of different angles and positions of the mobile phone middle frame through a photographing camera;
S4: transmitting the acquired image to a background computing center, comparing the acquired and shot image data with preset standard image data, carrying out image shooting distance identification judgment based on the shot image, executing step S5 when judging that the shooting distance of the current shooting camera is within the preset standard shooting distance range of the current shooting camera, and executing step S6 when judging that the shooting distance of the current shooting camera is not within the preset standard shooting distance range of the current shooting camera;
s5: performing image defect identification judgment on the shot image, judging whether the acquired image is defective or not, and then outputting a judgment result;
s6: adjusting the shooting distance of the current shooting camera relative to the middle frame of the mobile phone by adjusting the position and/or focal length of the current shooting camera and/or adjusting the shooting position of the mobile phone jig, then carrying out image acquisition on the middle frame of the mobile phone again, and returning to the step S4 to continue to execute subsequent operation steps;
and (3) until the photographing camera photographs a picture meeting a preset standard photographing distance and gives a defect detection result, and the surface defect detection operation for the current mobile phone middle frame is finished.
As a preferred technical scheme of the invention, the photographing cameras are provided with a plurality of angle areas distributed in the photographing space of the mobile phone middle frame, each photographing camera is arranged on a supporting frame for supporting the photographing camera in a sliding manner, and the photographing camera can adjust the distance relative to the mobile phone middle frame to be detected through sliding;
In step S4: when the shooting distance is determined to be within the preset standard shooting distance range of the current shooting camera, the step S5 can be executed only if all the shooting cameras are within the preset standard shooting distance range;
when it is determined that the photographing distance between at least one photographing camera and the middle frame of the mobile phone is within the preset standard photographing distance range and the photographing distance between at least one photographing camera and the middle frame of the mobile phone is not within the preset standard photographing distance range, executing step S61;
when judging that the shooting distances between all the current shooting cameras and the middle frame of the mobile phone are not in the preset standard shooting distance range, executing a step S62;
when judging that the shooting distance between all the current shooting cameras and the middle frame of the mobile phone is within the preset standard shooting distance range of each shooting camera, executing a step S5;
s5: performing image defect identification judgment on the shot image, judging whether the acquired image is defective or not, and then outputting a judgment result;
s61: adjusting the shooting distance of the shooting camera relative to the mobile phone middle frame by adjusting the position of the shooting camera and/or the focal length of the lens, then carrying out image acquisition on the mobile phone middle frame again, and returning to the step S4 to continue to execute subsequent operations;
S62: and adjusting the shooting distance of the shooting camera relative to the mobile phone middle frame by adjusting the position of the shooting camera, the focal length of the lens and the position of the mobile phone jig, then carrying out image acquisition on the mobile phone middle frame again, and returning to the step S4 to continue to execute subsequent operations.
A method for detecting the appearance of a middle frame of a mobile phone comprises the following steps:
s1: the middle frame of the mobile phone to be detected is conveyed to the vicinity of the detection station through a conveying track;
s2: placing the mobile phone middle frame on a product jig connected with the triaxial movement module, limiting the mobile phone middle frame through the product jig, and driving the product jig and the mobile phone middle frame to move to a photographing position in the light condensing cover through the triaxial movement module;
s3: the mobile phone middle frame is subjected to light supplementing through a light source arranged on the light condensing cover, the mobile phone middle frame is driven to move in a first moving direction and/or a second moving direction through the triaxial movement module, and/or the mobile phone middle frame can be driven to rotate along an output shaft of the R-axis motor at the same time, and in the movement process, images of different angles and different positions are acquired through the image acquisition mechanism;
s4: transmitting the acquired image to a background computing center, performing image defect identification judgment on the shot image, judging whether the acquired image is defective, outputting a judgment result, and executing step S5 if defect detection and identification cannot be performed due to non-compliance of shooting pixels;
S5: adjusting the shooting distance between the corresponding shooting camera and the mobile phone middle frame under the corresponding shooting angle by moving the position of the moving seat where the corresponding shooting camera is positioned and/or adjusting the focal length of the camera, then performing image acquisition operation on the mobile phone middle frame again, and returning to the step S4 to continuously execute the subsequent operation steps;
and after the photographing camera collects the picture meeting the preset standard photographing distance and gives out the defect detection result of the whole mobile phone middle frame, the surface defect detection operation aiming at the current mobile phone middle frame is finished.
As a preferred embodiment of the present invention, in step S4: after the acquired image is transmitted to a background computing center, firstly, image shooting distance identification judgment is carried out based on the acquired image, when the shooting distance of the current shooting camera is judged to be within the preset standard shooting distance range under the current shooting angle of the current shooting camera, image defect identification judgment is carried out on the acquired image, whether the acquired image is defective or not is judged, and then a judgment result is output;
when it is determined that the shooting distance of the current shooting camera is not within the preset standard shooting distance range under the current shooting angle of the current shooting camera 524, the shooting pixel cannot meet the defect detection requirement, step S5 is executed.
In step S5, the photographing angle and the photographing position of the mobile phone middle frame are adjusted by moving the position of the moving seat where the corresponding photographing camera is located and/or adjusting the focal length of the camera, and simultaneously adjusting the motion of the triaxial motion module to adjust the photographing distance between the corresponding photographing camera and the mobile phone middle frame.
As a preferable technical scheme of the invention, the process of driving the mobile phone middle frame to move through the triaxial movement module in the step S3 comprises the following operation substeps:
s31: determining a preset optimal position and AN angle of image acquisition, sequentially marking points to be acquired of the image on a middle frame of the mobile phone as A1, A2 and A3 when the mobile phone rotates clockwise or anticlockwise for one circle, sequentially moving the points A1, A2 and A3 to the optimal image acquisition position when the images are acquired, and sequentially recording the motion track of each image acquisition point of the A2 and A3 to the optimal photographing position when the points A2 move to the first direction, the second direction and the output shaft of the R shaft motor as the motion track of the current section of the triaxial motion module 2 after the images are acquired by the A1, and forming a complete motion track;
s32: inputting the complete motion trail program into a control system;
S33: and the triaxial movement module 2 is controlled by the control system, and the mobile phone middle frame is driven to move according to the movement track in S31 by the triaxial movement module.
As a preferable technical scheme of the invention, in the step S33, the mobile phone middle frame moves intermittently along the movement track, when the next image acquisition point moves to the image acquisition position, the mobile phone middle frame stops moving, and in the rest process, the current image acquisition is completed through the photographing component.
The invention has the beneficial effects that:
according to the mobile phone middle frame appearance detection mechanism provided by the invention, by adding the movable position adjusting function and the structure setting aiming at the photographing component, the technical problem that the optimal photographing distance can be obtained in a short time only by adjusting the position of the jig moving module and adjusting the focal length of the cameras in the prior art when a plurality of photographing cameras with a plurality of detection angles exist in the process of searching the optimal appearance detection station of the mobile phone middle frame in the debugging period of detection equipment is successfully solved, and the optimal detection position is determined.
Through increasing portable position adjustment function and the structure setting to shooting subassembly, also can assist in cell-phone center detection process, through adjusting the camera position and regard as the mode of adjustment and obtaining the compliance shooting distance for can obtain the best shooting distance fast, improve work efficiency.
The invention also provides a mobile phone middle frame appearance detection method, which creatively integrates the technical problems existing in the traditional detection technology based on discovery, integrates the shooting distance detection technology, combines the detection and judgment based on the shooting distance, and can greatly improve the detection efficiency based on the creative detection scheme of the invention.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a triaxial movement module;
FIG. 3 is a schematic view of a structure of a light-gathering cover;
FIG. 4 is a schematic perspective view of an image acquisition mechanism;
FIG. 5 is a schematic perspective view of a photographing assembly;
FIG. 6 is a schematic view of the positional relationship of the support frame and the mounting frame;
FIG. 7 is a flow chart of a method for detecting the appearance of a middle frame of a mobile phone;
description of main reference numerals:
in the figure: 1. a conveying rail; 2. a triaxial movement module; 21. an R-axis motor; 22. a second moving assembly; 221. a bottom plate; 222. a second motor; 223. a second screw rod; 224. a second guide rail; 23. a first fixing seat; 24. a first moving assembly; 241. a first bracket; 242. a first motor; 243. a speed reducer; 244. a first screw rod; 245. a first guide rail; 3. a product jig; 4. a light-gathering cover; 41. a light source; 42. a photographing channel; 5. an image acquisition mechanism; 51. a semicircular camera hanging plate; 511. a semicircular plate; 512. a connecting plate; 513. a side plate; 52. a photographing component; 521. a sliding block; 522. a mounting base; 523. a movable seat; 524. a photographing camera; 525. a limit groove; 6. a support frame; 7. and (5) mounting a frame.
Detailed Description
In order to further describe the technical means and effects adopted by the utility model for achieving the preset aim, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the utility model with reference to the attached drawings and the preferred embodiment.
Example 1: referring to fig. 1-6, the present embodiment provides a mobile phone middle frame appearance detecting mechanism, which includes a conveying track 1 and detecting stations symmetrically disposed at two sides of the conveying track 1, wherein station controllers are disposed on the detecting stations at two sides. The mobile phone middle frame is conveyed through the conveying track 1. The detection stations symmetrically arranged on two sides of the conveying track 1 are set as one group, the length of the conveying track 1 can be adjusted according to actual needs, a plurality of groups of detection stations are arranged on two sides of the conveying track 1, and each detection station can independently detect. The bottom of the same group of detection stations is provided with a base, as shown in fig. 6, the bottom of the base is provided with telescopic supporting feet, a moving wheel and a base controller, when the detection stations need to be moved, the telescopic supporting feet are operated to shrink through the base controller until the bottom of the moving wheel is stopped when being lowered onto the ground, and then the detection stations are pushed to the designated positions; after the detection work moves to the appointed position, the telescopic supporting leg is operated to stretch until the bottom of the movable wheel leaves the ground, the detection work position is supported by the telescopic supporting leg, and the detection work position is prevented from moving.
The detection station comprises a support frame 6, a triaxial movement module 2, a product jig 3, a light-focusing cover 4, a light source 41 and an image acquisition mechanism 5, the triaxial movement module 2, the product jig 3, the light-focusing cover 4, the light source 41 and the image acquisition mechanism 5 can be controlled through a station controller, the light-focusing cover 4 and the image acquisition mechanism 5 are all fixed on the support frame 6 through a mounting frame 7, the triaxial movement module 2 is arranged on one side of the light-focusing cover 4 away from the image acquisition mechanism 5, the product jig 3 is arranged on the triaxial movement module 2, the mobile phone middle frame is positioned through the product jig 3, the product jig 3 and the mobile phone middle frame can be driven to move along a first moving direction and a second moving direction through the triaxial movement module 2, and an output shaft of an R-axis motor can be rotated when the movement is performed. The light source 41 is arranged on the light-focusing cover 4 in a surrounding mode, the mobile phone middle frame is illuminated through the light source 41, no shadow part appears on the mobile phone middle frame, the image acquisition mechanism 5 can acquire images at five positions of the upper part, the middle lower part and the lower part of the mobile phone middle frame, the product fixture 3 and the mobile phone middle frame are driven to rotate through the triaxial movement module 2 in the image acquisition process, dead angle free shooting is carried out on the frame and the corner of the mobile phone middle frame, the image acquisition mechanism 5 is connected with the background computing center, the image acquisition mechanism 5 transmits acquired photos to the background computing center, compares the acquired photos with a model preset by the background computing center, judges whether the acquired images are defective, and then outputs a result. The light source 41 is also connected with the background computing center, when the output result is qualified, the light source 41 flashes a light, and when the output result is unqualified, the light source 41 flashes a red light.
As shown in fig. 4, the image capturing mechanism 5 includes a semicircular camera hanging plate 51 and five photographing components 52 arranged on the semicircular camera hanging plate 51 from top to bottom, the semicircular camera hanging plate 51 is fixed on the supporting frame 6 through the mounting frame 7, the semicircular camera hanging plate 51 adopts a hollow design, and the weight of the semicircular camera hanging plate 51 is reduced. The photographing channel 42 is formed in the light condensing cover 4, the positions of the five photographing components 52 are respectively and correspondingly arranged with the through holes of the photographing channel 42, shielding of the light condensing cover 4 to the photographing components 52 is avoided, the positions of the photographing components 52 can be adjusted, and images of five positions including the upper part, the middle lower part and the lower part of the middle frame of the mobile phone are respectively collected through the five photographing components 52.
As shown in fig. 5, the photographing assembly 52 includes two sliding blocks 521, a mounting seat 522, a moving seat 523 and a photographing camera 524, the sliding blocks 521 are symmetrically disposed on two sides of the mounting seat 522, the two sliding blocks 521 are connected with the mounting seat 522 through screws, the relative angle between the mounting seat 522 and the sliding block 521 can be adjusted, when the angle is required to be adjusted, the screws are loosened, the screws are tightened after being adjusted to a specified angle, and the sliding block 521 and the mounting seat 522 are fixed. The movable seat 523 is slidably connected to the mount 522, and in a normal state, the positions of the movable seat 523 and the mount 522 are relatively fixed, and when the position needs to be adjusted, a certain thrust is applied to the movable seat 523, and after the thrust disappears, the positions of the movable seat 523 and the mount 522 are relatively stationary. The photographing camera 524 is disposed on the moving base 523, and the sliding block 521 is slidably connected to the semicircular camera mount 51. The sliding block 521 and the semicircular camera mount 51 can be kept relatively stationary, and when the position of the sliding block 521 needs to be adjusted, a large thrust is applied to the sliding block 521, and when the thrust disappears, the sliding block 521 can be stationary to the current position. By adjusting the positions of the slider 521, the mount 522, and the movable seat 523, the adjustment of the height and angle of the photographing camera 524 is achieved.
In the preferred embodiment, the photographing frequencies of the five photographing assemblies 52 are the same, and when the middle frame of the mobile phone completes one rotation of the output shaft of the R-axis motor, the five photographing assemblies 52 can complete 80 groups, and 400 images are collected.
In a preferred embodiment, as shown in fig. 3, the photographing channel 42 includes a central through hole and strip-shaped through holes symmetrically formed on two sides of the central through hole, the central through hole corresponds to the position of the product fixture 3, the photographing assembly 52 located in the middle corresponds to the central through hole, the two photographing assemblies 52 located above correspond to the strip-shaped through holes above, and the two photographing assemblies 52 located below correspond to the strip-shaped through holes below.
In a preferred embodiment, as shown in fig. 4, the semicircular camera hanging plate 51 includes two semicircular plates 511, two connecting plates 512 and two side plates 513, two ends of the two semicircular plates 511 are respectively connected through the corresponding connecting plates 512, the two semicircular plates 511 are both fixed on the hollowed-out part in the middle of the side plate 513, the side plate 513 is fixed on the support frame 6 through the mounting frame 7, a limiting groove 525 is formed in one side, far away from the mounting seat 522, of the sliding block 521, and the limiting groove 525 is movably connected with the corresponding semicircular plate 511. The thickness of the limit groove 525 is slightly larger than that of the semicircular plate 511, so that the limit groove can move along the semicircular plate 511 when a large thrust is applied, meanwhile, a certain friction force exists between the semicircular plate 511 and the limit groove 525, and when the thrust disappears, the limit groove 525 and the semicircular plate 511 are relatively static.
In a preferred embodiment, as shown in fig. 2, the triaxial movement module 2 includes a first moving assembly 24, a second moving assembly 22 and an R-axis motor 21, the first moving assembly 24 is disposed on the support frame 6, the second moving assembly 22 is disposed on the first moving assembly 24, the R-axis motor 21 is mounted on a first fixing seat 23, the first fixing seat 23 is disposed on the second moving assembly 22, and the product fixture 3 is connected to an output shaft of the R-axis motor 21.
In this embodiment, the product fixture 3 and the middle frame of the mobile phone are driven to rotate along the output shaft of the R-axis motor by the rotation of the output shaft of the R-axis motor 21, and the first fixing seat 23 and the R-axis motor 21 are driven to move along the second moving direction by the second moving assembly 22; the second moving assembly 22 is driven to move along the first moving direction by the first moving assembly 24. In the embodiment, the three-axis motion module 2 consisting of the first moving assembly 24, the second moving assembly 22 and the R-axis motor 21 is adopted for multi-axis linkage, the device structure and the circuit arrangement are relatively simple, and the ineffective motion is less.
In a preferred embodiment, as shown in fig. 2, the first moving assembly 24 includes a first bracket 241, a first motor 242, a decelerator 243, a first screw 244 and a first guide rail 245, the first screw 244 is rotatably disposed on the first guide rail 245, the second moving assembly 22 is in threaded connection with the first screw 244, the second moving assembly 22 is in sliding connection with the first guide rail 245, the first motor 242 is fixed on the first bracket 241, an output shaft of the first motor 242 is connected with the decelerator 243, an output shaft of the decelerator 243 is connected with one end of the first screw 244, and the first bracket 241 is fixed on the support frame 6. In this embodiment, the first motor 242 and the decelerator 243 cooperate to drive the first screw rod 244 to rotate, and the second moving assembly 22 is driven to move in the first moving direction by the screwing action of the second moving assembly 22 and the first screw rod 244, and in this process, the first guide rail 245 is used for guiding.
In a preferred embodiment, as shown in fig. 2, the second moving assembly 22 includes a bottom plate 221, a second motor 222, a second screw rod 223, and a second guide rail 224, the bottom plate 221 is in threaded connection with the first screw rod 244, the bottom plate 221 is slidably connected with the first guide rail 245, the second guide rails 224 are two and symmetrically arranged on the bottom plate 221, the second screw rod 223 is located between the two second guide rails 224, the second screw rod 223 is rotatably connected with the bottom plate 221, the second motor 222 is fixed on the bottom plate 221, an output shaft of the second motor 222 is connected with one end of the second screw rod 223, and the first fixing seat 23 is in threaded connection with the second screw rod 223. In this embodiment, the output shaft of the second motor 222 rotates to drive the second screw 223 to rotate, so as to drive the first fixing seat 23 to move along the second moving direction, and in the moving process, the second fixing seat is guided by the second guide rail 224.
Example 2: a method for detecting the appearance of a middle frame of a mobile phone comprises the following steps:
s1: the middle frame of the mobile phone to be detected is conveyed to the vicinity of the detection station through a conveying track;
s2: placing the mobile phone middle frame on a product jig capable of moving in three axes, wherein the product jig is arranged on a three-axis movement module, limiting the mobile phone middle frame through the product jig, and driving the mobile phone middle frame to move to a detection photographing position through controlling the three-axis movement module and the product jig;
S3: the method comprises the steps of opening a light source to supplement light for a mobile phone middle frame, controlling the mobile phone middle frame to move in one or more directions through controlling a triaxial movement module, and collecting images of different angles and positions of the mobile phone middle frame through a photographing camera;
s4: transmitting the acquired image to a background computing center, comparing the acquired and shot image data with preset standard image data, carrying out image shooting distance identification judgment based on the shot image, executing step S5 when judging that the shooting distance of the current shooting camera is within the preset standard shooting distance range of the current shooting camera, and executing step S6 when judging that the shooting distance of the current shooting camera is not within the preset standard shooting distance range of the current shooting camera;
s5: performing image defect identification judgment on the shot image, judging whether the acquired image is defective or not, and then outputting a judgment result;
s6: adjusting the shooting distance of the current shooting camera relative to the middle frame of the mobile phone by adjusting the position and/or focal length of the current shooting camera and/or adjusting the shooting position of the mobile phone jig, then carrying out image acquisition on the middle frame of the mobile phone again, and returning to the step S4 to continue to execute subsequent operation steps;
And (3) until the photographing camera photographs a picture meeting a preset standard photographing distance and gives a defect detection result, and the surface defect detection operation for the current mobile phone middle frame is finished.
In the preferred embodiment, a plurality of photographing cameras are arranged and distributed in a plurality of angle areas of a photographing space of a mobile phone middle frame, each photographing camera is arranged on a supporting frame for supporting the photographing camera in a sliding manner, and the photographing camera can adjust the distance relative to the mobile phone middle frame to be detected through sliding;
in step S4: when the shooting distance is determined to be within the preset standard shooting distance range of the current shooting camera, the step S5 can be executed only if all the shooting cameras are within the preset standard shooting distance range;
when it is determined that the photographing distance between at least one photographing camera and the middle frame of the mobile phone is within the preset standard photographing distance range and the photographing distance between at least one photographing camera and the middle frame of the mobile phone is not within the preset standard photographing distance range, executing step S61;
when judging that the shooting distances between all the current shooting cameras and the middle frame of the mobile phone are not in the preset standard shooting distance range, executing a step S62;
when judging that the shooting distance between all the current shooting cameras and the middle frame of the mobile phone is within the preset standard shooting distance range of each shooting camera, executing a step S5;
S5: performing image defect identification judgment on the shot image, judging whether the acquired image is defective or not, and then outputting a judgment result;
s61: adjusting the shooting distance of the shooting camera relative to the mobile phone middle frame by adjusting the position of the shooting camera and/or the focal length of the lens, then carrying out image acquisition on the mobile phone middle frame again, and returning to the step S4 to continue to execute subsequent operations;
s62: and adjusting the shooting distance of the shooting camera relative to the mobile phone middle frame by adjusting the position of the shooting camera, the focal length of the lens and the position of the mobile phone jig, then carrying out image acquisition on the mobile phone middle frame again, and returning to the step S4 to continue to execute subsequent operations.
In a preferred embodiment, step S4 further comprises the sub-steps of:
s41: collecting an image sample, preprocessing the image sample to obtain an image standard shooting distance and give out a reasonable distance range of the image standard shooting distance, and processing the standard shooting distance range to obtain a standard image data range corresponding to the standard shooting distance range;
s42: preprocessing the shot image data to obtain the shooting distance of the current shooting camera, processing the shooting distance of the current shooting camera to obtain corresponding current image data, and judging whether the current image data falls into a standard image data range corresponding to a standard shooting distance range;
When it is judged that the image data of the photographing distance of the current photographing camera falls within the standard image data range corresponding to the standard photographing distance range, step S5 is performed,
when it is determined that the image data of the photographing distance of the current photographing camera does not fall within the standard image data range corresponding to the standard photographing distance range, step S6 is performed.
Example 3: a method for detecting the appearance of a middle frame of a mobile phone comprises the following steps:
s1: the middle frame of the mobile phone to be detected is conveyed to the vicinity of a detection station through a conveying track 1;
s2: placing the mobile phone middle frame on a product jig 3 connected with a triaxial movement module 2, limiting the mobile phone middle frame through the product jig 3, and driving the product jig 3 and the mobile phone middle frame to move to a photographing position in a light-focusing cover 4 through the triaxial movement module 2;
s3: the mobile phone middle frame is supplemented with light through a light source 41 arranged on the light condensing cover 4, the mobile phone middle frame is driven to move in a first moving direction and/or a second moving direction through the triaxial movement module 2, and/or the mobile phone middle frame can be driven to rotate along an R axis at the same time, and in the movement process, images of different angles and different positions are acquired through the image acquisition mechanism 5;
s4: transmitting the acquired image to a background computing center, performing image defect identification judgment on the shot image, judging whether the acquired image is defective, outputting a judgment result, and executing step S5 if defect detection and identification cannot be performed due to non-compliance of shooting pixels;
S5: adjusting the shooting distance between the corresponding shooting camera 524 and the mobile phone middle frame under the corresponding shooting angle by moving the position of the moving seat 523 where the corresponding shooting camera 524 is located and/or adjusting the camera focal length, and then performing image acquisition operation on the mobile phone middle frame again, returning to the step S4 to continuously execute the subsequent operation steps;
and after the photographing camera 524 collects the picture meeting the preset standard photographing distance and gives out the defect detection result of the whole mobile phone middle frame, the surface defect detection operation aiming at the current mobile phone middle frame is finished.
In a preferred embodiment, in step S3: and image acquisition is carried out on five positions of the upper part, the middle lower part and the lower part of the middle frame of the mobile phone through an image acquisition mechanism 5.
In a preferred embodiment, in the step S3, the first moving direction and the second moving direction are orthogonal to each other, and the first moving direction may be set as the X-axis direction, and the second moving direction may be set as the Y-axis direction.
In a preferred embodiment, in step S4: after the acquired image is transmitted to a background computing center, firstly, image shooting distance identification judgment is carried out based on the acquired image, when the shooting distance of the current shooting camera 524 is judged to be within the preset standard shooting distance range under the current shooting angle of the current shooting camera 524, image defect identification judgment is carried out on the acquired image, whether the acquired image is defective is judged, and then a judgment result is output;
When it is determined that the shooting distance of the current shooting camera 524 is not within the preset standard shooting distance range under the current shooting angle of the current shooting camera 524, the shooting pixel cannot meet the defect detection requirement, step S5 is executed.
In the preferred embodiment, in step S5, the photographing angle and the photographing position of the mobile phone center are adjusted by moving the position of the moving seat 523 where the corresponding photographing camera 524 is located and/or adjusting the focal length of the camera, and simultaneously adjusting the motion of the triaxial motion module 2, so as to adjust the photographing distance between the corresponding photographing camera 524 and the mobile phone center.
In the preferred embodiment, the process of driving the mobile phone center to move through the triaxial movement module 2 in step S3 includes the following operation sub-steps:
s31: determining a preset optimal position and AN angle of image acquisition, sequentially marking points to be acquired of the image on a middle frame of the mobile phone as A1, A2 and A3 when the mobile phone rotates clockwise or anticlockwise for one circle, sequentially moving the points A1, A2 and A3 to the optimal image acquisition position when the images are acquired, and sequentially recording the motion track of each image acquisition point of the A2 and A3 to the optimal photographing position when the points A2 move to the first direction, the second direction and the output shaft of the R shaft motor as the motion track of the current section of the triaxial motion module 2 after the images are acquired by the A1, and forming a complete motion track;
S32: inputting the complete motion trail program into a control system;
s33: and the triaxial movement module 2 is controlled by the control system, and the triaxial movement module 2 drives the mobile phone middle frame to move according to the movement track in S31.
In the preferred embodiment, in step S33, the mobile phone middle frame moves intermittently along the movement track, and when the next image acquisition point moves to the image acquisition position, the mobile phone middle frame stops moving, and in the rest process, the current image acquisition is completed through the photographing component 52.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (11)
1. A cell-phone center outward appearance detection mechanism, its characterized in that: the three-axis movement device comprises a conveying track (1) and supporting frames (6) symmetrically arranged on two sides of the conveying track (1), wherein a three-axis movement module (2), a light condensing cover (4) and an image acquisition mechanism (5) are sequentially arranged on the supporting frames (6), a product jig (3) is arranged on the three-axis movement module (2), the light condensing cover (4) and the image acquisition mechanism (5) are fixed on the supporting frames (6) through mounting frames (7), and the image acquisition mechanism (5) is connected with a background calculation center;
The image acquisition mechanism (5) comprises a semicircular camera hanging plate (51) and a plurality of photographing components (52) arranged on the semicircular camera hanging plate (51) from top to bottom, and the semicircular camera hanging plate (51) is fixed on the supporting frame (6) through the mounting frame (7); the semicircular camera hanging plate (51) comprises two semicircular plates (511), two connecting plates (512) and side plates (513), wherein two ends of the two semicircular plates (511) are respectively connected through the corresponding connecting plates (512), the two semicircular plates (511) are fixed on the side plates (513), and the side plates (513) are fixed on the supporting frame (6) through the mounting frame (7);
a photographing channel (42) is formed in the light condensing cover (4), the positions of the photographing components (52) are respectively corresponding to the through holes of the photographing channel (42), and the images of the parts of the middle frame of the mobile phone are respectively collected through the photographing components (52);
the photographing assembly (52) comprises two sliding blocks (521), two mounting seats (522), two movable seats (523) and photographing cameras (524), wherein the two sliding blocks (521) are symmetrically arranged on two sides of the mounting seats (522), the two sliding blocks (521) are detachably connected with the mounting seats (522), the sliding blocks (521) are movably connected with corresponding semicircular plates (511), the movable seats (523) are slidably connected with the mounting seats (522), the photographing cameras (524) are arranged on the movable seats (523), and the sliding blocks (521) are slidably connected with the semicircular camera hanging plates (51);
Triaxial motion module (2) are including first removal subassembly (24), first fixing base (23), second removal subassembly (22) and R axle motor (21), first removal subassembly (24) set up on support frame (6), second removal subassembly (22) set up on first removal subassembly (24), R axle motor (21) are installed on first fixing base (23), first fixing base (23) set up on second removal subassembly (22), output shaft of product tool (3) and R axle motor (21).
2. The mobile phone middle frame appearance detection mechanism according to claim 1, wherein: the photographing assemblies (52) are five and are used for respectively collecting images of five positions of the upper part, the middle lower part and the lower part of the middle frame of the mobile phone.
3. The mobile phone middle frame appearance detection mechanism according to claim 1, wherein: the sliding block (521) is far away from one side of the mounting seat (522) and is provided with a limiting groove (525), the thickness of the limiting groove (525) is slightly larger than that of the semicircular plate (511), and the limiting groove (525) is movably connected with the corresponding semicircular plate (511).
4. The mobile phone middle frame appearance detection mechanism according to claim 1, wherein: the photographing channel (42) comprises a middle through hole and strip-shaped through holes symmetrically formed in two sides of the middle through hole, the middle through hole corresponds to the position of the product jig (3), photographing assemblies (52) located in the middle correspond to the middle through hole, two photographing assemblies (52) located above correspond to the strip-shaped through holes above, and two photographing assemblies (52) located below correspond to the strip-shaped through holes below.
5. A method for detecting the appearance of a mobile phone center, the method being performed by using the appearance detection mechanism for a mobile phone center according to any one of claims 1 to 4, comprising the steps of:
s1: the middle frame of the mobile phone to be detected is conveyed to the vicinity of the detection station through a conveying track;
s2: placing the mobile phone middle frame on a product jig capable of moving in three axes, wherein the product jig is arranged on a three-axis movement module, limiting the mobile phone middle frame through the product jig, and driving the mobile phone middle frame to move to a detection photographing position through controlling the three-axis movement module and the product jig;
s3: the method comprises the steps of opening a light source to supplement light for a mobile phone middle frame, controlling the mobile phone middle frame to move in one or more directions through controlling a triaxial movement module, and collecting images of different angles and positions of the mobile phone middle frame through a photographing camera;
the method is characterized in that: the method also comprises the following detection steps:
s4: transmitting the acquired image to a background computing center, comparing the acquired and shot image data with preset standard image data, carrying out image shooting distance identification judgment based on the shot image, executing step S5 when judging that the shooting distance of the current shooting camera is within the preset standard shooting distance range of the current shooting camera, and executing step S6 when judging that the shooting distance of the current shooting camera is not within the preset standard shooting distance range of the current shooting camera;
S5: performing image defect identification judgment on the shot image, judging whether the acquired image is defective or not, and then outputting a judgment result;
s6: adjusting the shooting distance of the current shooting camera relative to the middle frame of the mobile phone by adjusting the position and/or focal length of the current shooting camera and/or adjusting the shooting position of the mobile phone jig, then carrying out image acquisition on the middle frame of the mobile phone again, and returning to the step S4 to continue to execute subsequent operation steps;
and (3) until the photographing camera photographs a picture meeting a preset standard photographing distance and gives a defect detection result, and the surface defect detection operation for the current mobile phone middle frame is finished.
6. The method for detecting the appearance of a middle frame of a mobile phone according to claim 5, wherein the method comprises the following steps:
the photographing cameras are provided with a plurality of angle areas which are distributed in the photographing space of the mobile phone middle frame, each photographing camera is arranged on a supporting frame which supports the photographing camera in a sliding mode, and the photographing camera can adjust the distance relative to the mobile phone middle frame to be detected through sliding;
in step S4: when the shooting distance is determined to be within the preset standard shooting distance range of the current shooting camera, the step S5 can be executed only if all the shooting cameras are within the preset standard shooting distance range;
When it is determined that the photographing distance between at least one photographing camera and the middle frame of the mobile phone is within the preset standard photographing distance range and the photographing distance between at least one photographing camera and the middle frame of the mobile phone is not within the preset standard photographing distance range, executing step S61;
when judging that the shooting distances between all the current shooting cameras and the middle frame of the mobile phone are not in the preset standard shooting distance range, executing a step S62;
when judging that the shooting distance between all the current shooting cameras and the middle frame of the mobile phone is within the preset standard shooting distance range of each shooting camera, executing a step S5;
s5: performing image defect identification judgment on the shot image, judging whether the acquired image is defective or not, and then outputting a judgment result;
s61: adjusting the shooting distance of the shooting camera relative to the mobile phone middle frame by adjusting the position of the shooting camera and/or the focal length of the lens, then carrying out image acquisition on the mobile phone middle frame again, and returning to the step S4 to continue to execute subsequent operations;
s62: and adjusting the shooting distance of the shooting camera relative to the mobile phone middle frame by adjusting the position of the shooting camera, the focal length of the lens and the position of the mobile phone jig, then carrying out image acquisition on the mobile phone middle frame again, and returning to the step S4 to continue to execute subsequent operations.
7. A method for detecting the appearance of a middle frame of a mobile phone is characterized by comprising the following steps: the detection method is carried out by adopting the appearance detection mechanism of the mobile phone middle frame according to any one of claims 1 to 4, and comprises the following steps:
s1: the middle frame of the mobile phone to be detected is conveyed to the vicinity of the detection station through a conveying track (1);
s2: placing the mobile phone middle frame on a product jig (3) connected with a triaxial movement module (2), limiting the mobile phone middle frame through the product jig (3), and driving the product jig (3) and the mobile phone middle frame to move to a photographing position in a light-gathering cover (4) through the triaxial movement module (2);
s3: the mobile phone middle frame is subjected to light supplementing through a light source (41) arranged on the light-gathering cover (4), the mobile phone middle frame is driven to move in a first moving direction and/or a second moving direction through the triaxial moving module (2), and/or the mobile phone middle frame can be driven to rotate along an output shaft of the R-axis motor (21) at the same time, and in the moving process, images of different angles and different positions are acquired through the image acquisition mechanism (5);
s4: transmitting the acquired image to a background computing center, performing image defect identification judgment on the shot image, judging whether the acquired image is defective, outputting a judgment result, and executing step S5 if defect detection and identification cannot be performed due to non-compliance of shooting pixels;
S5: adjusting the shooting distance between the corresponding shooting camera (524) and the middle frame of the mobile phone under the corresponding shooting angle by moving the position of the moving seat (523) where the corresponding shooting camera (524) is positioned and/or adjusting the focal length of the camera, then performing image acquisition operation on the middle frame of the mobile phone again, and returning to the step S4 to continuously execute the subsequent operation steps;
and after the photographing camera (524) collects the picture meeting the preset standard photographing distance and gives out the defect detection result of the whole mobile phone middle frame, the surface defect detection operation aiming at the current mobile phone middle frame is finished.
8. The method for detecting the appearance of a middle frame of a mobile phone according to claim 7, wherein the method comprises the following steps:
in step S4: after the acquired image is transmitted to a background computing center, firstly, image shooting distance identification judgment is carried out based on the acquired image, when the shooting distance of the current shooting camera (524) is judged to be within the preset standard shooting distance range under the current shooting angle of the current shooting camera (524), image defect identification judgment is carried out on the acquired image, whether the acquired image is defective or not is judged, and then a judgment result is output;
when it is determined that the shooting distance of the current shooting camera (524) is not within the preset standard shooting distance range under the current shooting angle of the current shooting camera (524), the shooting pixel cannot meet the defect detection requirement, and step S5 is executed.
9. The method for detecting the appearance of a middle frame of a mobile phone according to claim 8, wherein the method comprises the following steps:
in step S5, the shooting angle and the shooting position of the mobile phone middle frame are adjusted by moving the position of the moving seat (523) where the corresponding shooting camera (524) is located and/or adjusting the focal length of the camera, and simultaneously adjusting the motion of the triaxial motion module (2), so as to adjust the shooting distance between the corresponding shooting camera (524) and the mobile phone middle frame.
10. The method for detecting the appearance of a middle frame of a mobile phone according to claim 7, wherein the method comprises the following steps:
in the step S3, the process of driving the mobile phone middle frame to move through the triaxial movement module (2) comprises the following operation substeps:
s31: determining a preset optimal position and AN angle of image acquisition, sequentially marking points to be acquired of images on a middle frame of the mobile phone as A1, A2 and A3. AN when the mobile phone rotates clockwise or anticlockwise for one circle, sequentially moving the points A1, A2 and A3. AN to the optimal image acquisition position when the images are acquired, and sequentially recording the motion track of each image acquisition point of the A2 and A3. AN to the optimal photographing position when the A2 moves to the first moving direction, the second moving direction and the output shaft of the R-axis motor (21) after the images are acquired by the A1, wherein the motion track of the current section of the triaxial motion module (2) is the motion track of the A2 and A3. AN;
S32: inputting the complete motion trail program into a control system;
s33: and the triaxial movement module (2) is controlled by the control system, and the triaxial movement module (2) drives the mobile phone middle frame to move according to the movement track in S31.
11. The method for detecting the appearance of a middle frame of a mobile phone according to claim 10, wherein the method comprises the following steps: in the step S33, the mobile phone middle frame moves intermittently along the movement track, when the next image acquisition point moves to the image acquisition position, the mobile phone middle frame stops moving, and in the rest process, the current image acquisition is completed through the photographing component (52).
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