CN108896575A - A kind of electronic device appearance detection system and detection method - Google Patents

A kind of electronic device appearance detection system and detection method Download PDF

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Publication number
CN108896575A
CN108896575A CN201810433159.0A CN201810433159A CN108896575A CN 108896575 A CN108896575 A CN 108896575A CN 201810433159 A CN201810433159 A CN 201810433159A CN 108896575 A CN108896575 A CN 108896575A
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CN
China
Prior art keywords
pallet
electronic device
conveyer frames
lower connecting
conveyer belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810433159.0A
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Chinese (zh)
Inventor
缪建强
缪建玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Jian Yi Sen Electronic Technology Co Ltd
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Suzhou Jian Yi Sen Electronic Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Suzhou Jian Yi Sen Electronic Technology Co Ltd filed Critical Suzhou Jian Yi Sen Electronic Technology Co Ltd
Priority to CN201810433159.0A priority Critical patent/CN108896575A/en
Publication of CN108896575A publication Critical patent/CN108896575A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/95Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

The invention discloses a kind of electronic device appearance detection systems of electronic device appearance detection technique field,Including conveyer frames,Pass through transmission V belt translation between the driving wheel and driven wheel,The centre of the conveyer frames inner cavity is provided with supporting plate,Rotating device is provided at the top of the supporting plate,It is evenly arranged on the outside of the conveyer belt and props up device,The opening to match with upper link block is provided on the conveyer belt,Top on front side of the conveyer frames is provided with support base,And camera is provided at the top of support base,And the probe of camera is towards the centre of pallet,The bottom of the conveyer frames is evenly arranged with stabilizer blade,The device reduces the uses of camera,It reduces costs,Improve detection efficiency,Reduce the demand of labour,It is mobile that device is propped up by conveyer belt drive,Form pipelined operation,It is more convenient,And conveyer belt vertical direction circulation reduces the occupancy of horizontal space.

Description

A kind of electronic device appearance detection system and detection method
Technical field
The present invention relates to electronic device appearance detection technique field, specially a kind of electronic device appearance detection system and inspection Survey method.
Background technique
The open defect of a variety of electronic devices including weld tabs capacitor will lead to properties of product variation, and product is enabled to have matter Measure hidden danger.Wherein, by taking weld tabs capacitor as an example, open defect mainly includes that capacitor aluminum hull is pinched, aluminum hull protrusion, outer packing are broken, PIN Foot beats that burnt, set pipe sleeve is anti-, leading-out terminal is crooked and mixing etc..In order to improve product quality, need to exist to including weld tabs capacitor The appearance of interior electronic device is detected.
Appearance detection at present mainly manually detects, error rate is high, testing result reliability is low, be easy to appear missing inspection and Erroneous detection.A small amount of detection method taken pictures using camera, and multiple camera multi-angles is needed to be shot, it causes to give birth in this way Produce at high cost, and detection efficiency is low, and therefore, it is necessary to a kind of electronic device appearance detection system and detection methods.
Summary of the invention
The purpose of the present invention is to provide a kind of electronic device appearance detection system and detection methods, to solve above-mentioned background The problem of being proposed in technology.
To achieve the above object, the present invention provides the following technical solutions:A kind of electronic device appearance detection system, including pass Frame to be sent, driving wheel is movably set on the right side of the conveyer frames inner cavity, the right side on front side of the conveyer frames is provided with transport motor, And the output end of transport motor is connect with driving wheel, and driven wheel, the active are movably set on the left of the conveyer frames inner cavity By transmission V belt translation between wheel and driven wheel, the top and bottom of the conveyer frames are from left to right successively linearly arranged There is bogie wheel, and the side that two sides bogie wheel is located remotely from each other up and down is bonded with the inner sidewall of conveyer belt, the conveyer frames inner cavity Centre is provided with supporting plate, and rotating device is provided at the top of the supporting plate, and the rotating device includes cylinder, the cylinder it is defeated Outlet is provided with telescopic rod, and telescopic rod is located at the top of cylinder, and force bearing plate, the load are provided at the top of the telescopic rod Rotating electric machine is provided at the top of plate, the output end of the rotating electric machine is provided with drive rod, and drive rod is located at rotating electric machine Top, be provided with lower connecting block at the top of the drive rod, be evenly arranged on the outside of the conveyer belt and prop up device, it is described Propping up device includes shell, and limited block is provided at the top and bottom of the housing cavity, is lived between limited block described in two groups Dynamic to be plugged with pallet, the bottom of the pallet is provided with the upper link block to match with lower connecting block, is arranged on the conveyer belt There is the opening to match with upper link block, the top on front side of the conveyer frames is provided with support base, sets at the top of the support base It is equipped with camera, and the probe of camera, towards the centre of pallet, the bottom of the conveyer frames is evenly arranged with stabilizer blade.
Preferably, be provided with sealing ring at the top of the limited block of downside and at the top of pallet, the upside limited block and The bottom of pallet is provided with the seal groove to match with sealing ring.
Preferably, the stabilizer blade includes support rod, and the bottom thread of support rod is connected with supporting sleeve, and the bottom of supporting sleeve Portion is provided with neonychium.
Preferably, the cross section at the top of the lower connecting block is in crosswise, and the top of the lower connecting block vertical section is in isosceles ladder Shape is provided on the upper link block and the cross recess that matches at the top of lower connecting block.
Preferably, the adjacent surface of the pallet and two groups of limited blocks is provided with annular groove, and the inner cavity of annular groove is uniformly arranged There is ball, and ball is steel ball.
Preferably, a kind of detection method based on electronic device appearance detection system, steps are as follows:
S1:Check whether each structure of the device is intact, and electronic device to be detected is placed on positioned at conveyer frames by staff On the pallet for propping up device of top right side, transport motor drives driving wheel rotation, and driving wheel rotates counterclockwise, and passes through biography Band is sent to drive driven wheel rotation, the device that props up at the top of conveyer belt moves from right to left;
S2:The stop motion when propping up device and being located at the surface of rotating device, cylinder jack up rotating electric machine, wear lower connecting block Opening to be crossed, connect the lower connecting block at the top of drive rod with upper link block, rotating electric machine is powered on, pallet rotation is driven, and Camera takes pictures to the electronic device rotated with pallet, and shoot be electronic instrument different angle photo;
S3:After taking pictures, cylinder drives rotating electric machine decline, so that lower connecting block is detached from upper link block, and contract from open lumen It returns, then props up device and move right, provided for next group of electronic device to be detected and check position.
Compared with prior art, the beneficial effects of the invention are as follows:The apparatus structure is simple, easy to use, and staff will Electronic device to be detected is placed on the pallet for propping up device of conveyer frames top right side, and transport motor drives driving wheel Rotation, and driving wheel rotates counterclockwise, and drives driven wheel to rotate by conveyer belt, at the top of conveyer belt prop up device from Dextrad left movement, the stop motion when propping up device and being located at the surface of rotating device, cylinder jack up rotating electric machine, make lower connection Block passes through opening, connect the lower connecting block at the top of drive rod with upper link block, and rotating electric machine is powered on, and pallet is driven to turn It is dynamic, and camera takes pictures to the electronic device rotated with pallet, and shoot be electronic instrument different angle photo, After taking pictures, cylinder drives rotating electric machine decline, so that lower connecting block is detached from upper link block, and retract from open lumen, then It props up device to move right, is provided for next group of electronic device to be detected and check position, the device reduces the use of camera, It reduces costs, improves detection efficiency, reduce the demand of labour, device movement is propped up by conveyer belt drive, is formed Pipelined operation, it is more convenient, and conveyer belt vertical direction circulation reduces the occupancy of horizontal space.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention;
Fig. 2 is rotating device schematic diagram of the present invention;
Fig. 3 is that the present invention props up schematic device.
In figure:1 conveyer frames, 2 driving wheels, 3 driven wheels, 4 conveyer belts, 5 bogie wheels, 6 prop up device, 61 shells, 62 limits It is block, 63 pallets, 64 annular grooves, 65 balls, link block on 66,67 sealing rings, 7 supporting plates, 8 rotating devices, 81 cylinders, 82 flexible Bar, 83 force bearing plates, 84 rotating electric machines, 85 drive rods, 86 lower connecting blocks, 9 support bases, 10 cameras, 11 openings, 12 stabilizer blades.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution:A kind of electronic device appearance detection system, including transmission Frame 1 is movably set with driving wheel 2 on the right side of 1 inner cavity of conveyer frames, and the right side of 1 front side of conveyer frames is provided with transport motor, and transmits The output end of motor is connect with driving wheel 2, and driven wheel 3, driving wheel 2 and driven wheel 3 are movably set on the left of 1 inner cavity of conveyer frames Between be driven by conveyer belt 4, the top and bottom of conveyer frames 1 are from left to right successively linearly disposed with bogie wheel 5, and The side that upper and lower two sides bogie wheel 5 is located remotely from each other is bonded with the inner sidewall of conveyer belt 4, and the centre of 1 inner cavity of conveyer frames is provided with support Plate 7, the top of supporting plate 7 are provided with rotating device 8, and rotating device 8 includes cylinder 81, and the output end of cylinder 81 is provided with telescopic rod 82, and telescopic rod 82 is located at the top of cylinder 81, the top of telescopic rod 82 is provided with force bearing plate 83, the top setting of force bearing plate 83 There is rotating electric machine 84, the output end of rotating electric machine 84 is provided with drive rod 85, and drive rod 85 is located at the top of rotating electric machine 84, The top of drive rod 85 is provided with lower connecting block 86, and the outside of conveyer belt 4, which is evenly arranged with, props up device 6, props up device 6 and includes Shell 61 is provided with limited block 62 at the top and bottom of 61 inner cavity of shell, and activity is plugged with pallet between two groups of limited blocks 62 63, the bottom of pallet 63 is provided with the upper link block 66 to match with lower connecting block 86, is provided on conveyer belt 4 and upper link block The top of 66 openings 11 to match, 1 front side of conveyer frames is provided with support base 9, and the top of support base 9 is provided with camera 10, And the probe of camera 10, towards the centre of pallet 63, the bottom of conveyer frames 1 is evenly arranged with stabilizer blade 12, transport motor and rotation Motor 84 is electrically connected by conducting wire and external power switch.
Wherein, 62 top of downside limited block and the top of pallet 63 are provided with sealing ring 67, upside limited block 62 and support The bottom of disk 63 is provided with the seal groove to match with sealing ring 67, and the work of sealing is played in the matching of sealing ring 67 and seal groove With preventing impurity from entering the gap between pallet 63 and limited block 62;
Stabilizer blade 12 includes support rod, and the bottom thread of support rod is connected with supporting sleeve, and the bottom of supporting sleeve is provided with Neonychium, the height of the adjustable stabilizer blade 12 of the support rod and supporting sleeve being connected through a screw thread, adapts to rugged ground;
The cross section at 86 top of lower connecting block is in crosswise, and the top of 86 vertical section of lower connecting block is in isosceles trapezoid, upper link block The cross recess for being provided on 66 and matching at the top of lower connecting block 86, the top of vertical section are in 86 side of lower connecting block of isosceles trapezoid Connection with cross recess on upper link block 86;
The adjacent surface of pallet 63 and two groups of limited blocks 62 is provided with annular groove 64, and the inner cavity of annular groove 64 is evenly arranged with rolling Pearl 65, and ball 65 is steel ball, the presence of annular groove 64 plays the role of limit to ball 65, and reduction is played in the presence of ball 65 The effect to rub between pallet 63 and limited block 62.
A kind of detection method based on electronic device appearance detection system, steps are as follows:
S1:Check whether each structure of the device is intact, and electronic device to be detected is placed on positioned at conveyer frames 1 by staff On the pallet 63 for propping up device 6 of top right side, transport motor drives driving wheel 2 to rotate, and driving wheel 2 rotates counterclockwise, and Driven wheel 3 is driven to rotate by conveyer belt 4, the device 6 that props up positioned at 4 top of conveyer belt moves from right to left;
S2:The stop motion when propping up device 6 and being located at the surface of rotating device 8, cylinder 81 jack up rotating electric machine 84, make lower company It connects block 86 and passes through opening 11, connect the lower connecting block 86 at 85 top of drive rod with upper link block 66,84 energization work of rotating electric machine Make, drive pallet 63 to rotate, and camera 10 takes pictures to the electronic device rotated with pallet 63, and what is shot is electronics The photo of instrument different angle;
S3:After taking pictures, cylinder 81 drives rotating electric machine 84 to decline, and lower connecting block 86 is made to be detached from upper link block 66, and from opening 11 inner cavities of mouth retract, and then prop up device 6 and move right, and provide for next group of electronic device to be detected and check position.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (6)

1. a kind of electronic device appearance detection system, including conveyer frames(1), it is characterised in that:The conveyer frames(1)The right side of inner cavity Side is movably set with driving wheel(2), the conveyer frames(1)Transport motor, and the output of transport motor are provided on the right side of front side End and driving wheel(2)Connection, the conveyer frames(1)Driven wheel is movably set on the left of inner cavity(3), the driving wheel(2)With Driven wheel(3)Between pass through conveyer belt(4)Transmission, the conveyer frames(1)Top and bottom from left to right successively linear row Column are provided with bogie wheel(5), and two sides bogie wheel up and down(5)The side being located remotely from each other and conveyer belt(4)Inner sidewall fitting, institute State conveyer frames(1)The centre of inner cavity is provided with supporting plate(7), the supporting plate(7)Top be provided with rotating device(8), the rotation Rotary device(8)Including cylinder(81), the cylinder(81)Output end be provided with telescopic rod(82), and telescopic rod(82)Positioned at gas Cylinder(81)Top, the telescopic rod(82)Top be provided with force bearing plate(83), the force bearing plate(83)Top be provided with Rotating electric machine(84), the rotating electric machine(84)Output end be provided with drive rod(85), and drive rod(85)Positioned at electric rotating Machine(84)Top, the drive rod(85)Top be provided with lower connecting block(86), the conveyer belt(4)Outside uniformly set It is equipped with and props up device(6), described to prop up device(6)Including shell(61), the shell(61)It is all provided at the top and bottom of inner cavity It is equipped with limited block(62), limited block described in two groups(62)Between activity be plugged with pallet(63), the pallet(63)Bottom set It is equipped with and lower connecting block(86)The upper link block to match(66), the conveyer belt(4)On be provided with and upper link block(66)Phase Matched opening(11), the conveyer frames(1)Support base is provided at the top of front side(9), the support base(9)Top setting There is camera(10), and camera(10)Probe towards pallet(63)Centre, the conveyer frames(1)Bottom be uniformly arranged There is stabilizer blade(12).
2. a kind of electronic device appearance detection system according to claim 1, it is characterised in that:The downside limited block (62)Top and pallet(63)Top be provided with sealing ring(67), the upside limited block(62)And pallet(63)Bottom It is provided with and sealing ring(67)The seal groove to match.
3. a kind of electronic device appearance detection system according to claim 1, it is characterised in that:The stabilizer blade(12)Including Support rod, and the bottom thread of support rod is connected with supporting sleeve, and the bottom of supporting sleeve is provided with neonychium.
4. a kind of electronic device appearance detection system according to claim 1, it is characterised in that:The lower connecting block(86) The cross section at top is in crosswise, the lower connecting block(86)The top of vertical section is in isosceles trapezoid, the upper link block(66) On be provided with and lower connecting block(86)The cross recess that top matches.
5. a kind of electronic device appearance detection system according to claim 1, it is characterised in that:The pallet(63)With two Group limited block(62)Adjacent surface be provided with annular groove(64), and annular groove(64)Inner cavity be evenly arranged with ball(65), And ball(65)For steel ball.
6. a kind of electronic device appearance detection system described in -5 according to claim 1, it is characterised in that:One kind being based on electronics device The detection method of part appearance detection system, steps are as follows:
S1:Check whether each structure of the device is intact, and electronic device to be detected is placed on positioned at conveyer frames by staff (1)Top right side props up device(6)Pallet(63)On, transport motor drives driving wheel(2)Rotation, and driving wheel(2)It is inverse Hour hands rotation, and pass through conveyer belt(4)Drive driven wheel(3)Rotation is located at conveyer belt(4)Top props up device(6)From the right side It moves downward;
S2:When propping up device(6)Positioned at rotating device(8)Surface when stop motion, cylinder(81)Jack up rotating electric machine (84), make lower connecting block(86)Across opening(11), make drive rod(85)The lower connecting block at top(86)With upper link block(66) Connection, rotating electric machine(84)It is powered on, drives pallet(63)Rotation, and camera(10)To with pallet(63)The electricity of rotation Sub- device is taken pictures, and shoot be electronic instrument different angle photo;
S3:After taking pictures, cylinder(81)Drive rotating electric machine(84)Decline, makes lower connecting block(86)Link block in disengaging (66), and from opening(11)Inner cavity retracts, and then props up device(6)It moves right, is provided for next group of electronic device to be detected Check position.
CN201810433159.0A 2018-05-08 2018-05-08 A kind of electronic device appearance detection system and detection method Pending CN108896575A (en)

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Application Number Priority Date Filing Date Title
CN201810433159.0A CN108896575A (en) 2018-05-08 2018-05-08 A kind of electronic device appearance detection system and detection method

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Application Number Priority Date Filing Date Title
CN201810433159.0A CN108896575A (en) 2018-05-08 2018-05-08 A kind of electronic device appearance detection system and detection method

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CN108896575A true CN108896575A (en) 2018-11-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110361056A (en) * 2019-08-22 2019-10-22 中车青岛四方车辆研究所有限公司 Super capacitor comprehensive parameters detection system
CN111024719A (en) * 2019-11-29 2020-04-17 安徽机电职业技术学院 Product appearance detection industrial robot based on visual system
CN114002218A (en) * 2021-11-03 2022-02-01 河南易事建设工程有限公司 Bridge bottom detection equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003344220A (en) * 2002-05-22 2003-12-03 Sony Corp Manufacturing method for liquid crystal display, and device and method for inspecting ghost defect for liquid crystal display
CN1967318A (en) * 2005-11-18 2007-05-23 飞而康公司 Inspecting system of flat panel display
CN201813274U (en) * 2010-06-28 2011-04-27 南京汽轮电机(集团)有限责任公司 Rotating tray for eliminating cumulative stacking height error of stator iron core for silicon steel sheet
CN205650478U (en) * 2016-03-17 2016-10-19 深圳市固海威科技有限公司 Switch outward appearance check out test set and system
CN107555092A (en) * 2017-09-26 2018-01-09 乐凯特科技铜陵有限公司 A kind of PCB automatically enters plate optical image detector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003344220A (en) * 2002-05-22 2003-12-03 Sony Corp Manufacturing method for liquid crystal display, and device and method for inspecting ghost defect for liquid crystal display
CN1967318A (en) * 2005-11-18 2007-05-23 飞而康公司 Inspecting system of flat panel display
CN201813274U (en) * 2010-06-28 2011-04-27 南京汽轮电机(集团)有限责任公司 Rotating tray for eliminating cumulative stacking height error of stator iron core for silicon steel sheet
CN205650478U (en) * 2016-03-17 2016-10-19 深圳市固海威科技有限公司 Switch outward appearance check out test set and system
CN107555092A (en) * 2017-09-26 2018-01-09 乐凯特科技铜陵有限公司 A kind of PCB automatically enters plate optical image detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110361056A (en) * 2019-08-22 2019-10-22 中车青岛四方车辆研究所有限公司 Super capacitor comprehensive parameters detection system
CN111024719A (en) * 2019-11-29 2020-04-17 安徽机电职业技术学院 Product appearance detection industrial robot based on visual system
CN114002218A (en) * 2021-11-03 2022-02-01 河南易事建设工程有限公司 Bridge bottom detection equipment

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Application publication date: 20181127