CN109927401A - A kind of high accuracy prints machine double light path machine vision device - Google Patents

A kind of high accuracy prints machine double light path machine vision device Download PDF

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Publication number
CN109927401A
CN109927401A CN201910099427.4A CN201910099427A CN109927401A CN 109927401 A CN109927401 A CN 109927401A CN 201910099427 A CN201910099427 A CN 201910099427A CN 109927401 A CN109927401 A CN 109927401A
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CN
China
Prior art keywords
semi
prism
reflecting film
transparent semi
light source
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
CN201910099427.4A
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Chinese (zh)
Inventor
曹捷
张国琦
闫兴涛
刘永安
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.)
XiAn Institute of Optics and Precision Mechanics of CAS
Original Assignee
XiAn Institute of Optics and Precision Mechanics of CAS
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 XiAn Institute of Optics and Precision Mechanics of CAS filed Critical XiAn Institute of Optics and Precision Mechanics of CAS
Priority to CN201910099427.4A priority Critical patent/CN109927401A/en
Publication of CN109927401A publication Critical patent/CN109927401A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of high accuracy prints machine double light path machine vision devices, reliably can easily realize the contraposition of the MARK point of Printing screen and pcb board.The present invention includes visual-alignment component mobile by two-dimentional driving mechanism driving and being arranged between Printing screen and PCB, the visual-alignment component includes prism, the semi-transparent semi-reflecting film at 45 degree of inclination angles is arranged in prism centers, the upper surface of semi-transparent semi-reflecting film is reflecting surface, and the lower surface of semi-transparent semi-reflecting film is transmission plane;Upper LED light source is arranged in the top of prism, the lower section of prism is arranged lower LED light source, is arranged reflective mirror inside prism with the opposite one side of the transmission plane of semi-transparent semi-reflecting film, outside prism, side towards semi-transparent semi-reflecting film reflecting surface is provided with camera lens, and camera lens rear portion is provided with industrial camera;The central optical path at the center of the semi-transparent semi-reflecting film, the center of camera lens and industrial camera is overlapped.

Description

A kind of high accuracy prints machine double light path machine vision device
Technical field
The present invention relates to a kind of visual-alignment devices of solder(ing) paste printing machine, specifically for the printing net of solder(ing) paste printing machine The contraposition of the MARK of plate and pcb board point.
Background technique
In SMT industry, wiring board carries out component assembling and Reflow Soldering process after passing through printing machine applying solder paste, finally Realize the complete production of PCB;Printing machine in the prior art has switched to automanual printing by manual application, specifically, gas Cylinder driving scraper and steel mesh drop to PCB surface, scratch solder(ing) paste repeatedly along steel mesh surface or so after scraper landing;This process Why it is semi-automatic, is since it is desired that having artificial process PCB being fixed on fixture and manually remove, so More waste time;
We are dedicated to making full automatic welding tin cream printing machine, while also to promote blade coating precision;In full-automatic printer Design in, the contraposition of Printing screen and PCB is very important, current contraposition merely by MARK point carry out laser wear Cross test contraposition, or artificial contraposition;Since light and lighting environment are insufficient, all there are some drawbacks in these alignment modes, no It reliably can accurately align;Also it is unfavorable for realizing full automatic contraposition process.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of high-precision print Brush machine double light path machine vision device reliably can easily realize the contraposition of the MARK point of Printing screen and pcb board.
In order to achieve the above object, the present invention is achieved by the following scheme:
A kind of high accuracy prints machine double light path machine vision device, for carrying out the MARK point on Printing screen and PCB Contraposition, it is characterised in that: comprising driving mobile by two-dimentional driving mechanism and the vision pair between Printing screen and PCB being arranged in Hyte part, the visual-alignment component include prism, and the semi-transparent semi-reflecting film at 45 degree of inclination angles is arranged in prism centers, semi-transparent semi-reflecting film Upper surface is reflecting surface, and the lower surface of semi-transparent semi-reflecting film is transmission plane;Upper LED light source, the lower section of prism is arranged in the top of prism Lower LED light source is set, reflective mirror is set inside prism with the opposite one side of the transmission plane of semi-transparent semi-reflecting film, outside prism, towards The side of semi-transparent semi-reflecting film reflecting surface is provided with camera lens, and camera lens rear portion is provided with industrial camera;
The central optical path at the center of the semi-transparent semi-reflecting film, the center of camera lens and industrial camera is overlapped.
As a kind of preferred embodiment of the invention:
The upper upward irradiation light of LED light source, the light of web plate MARK point are downwardly into the reflection of the semi-transparent semi-reflecting film of prism Face back reflection is to the camera lens;
Irradiation light under lower LED light source phase, the light of pcb board MARK point are upwardly into the transmission of the semi-transparent semi-reflecting film of prism Face has reflex to mirror surface back reflection to the transmission plane of semi-transparent semi-reflecting film after pass through semi-transparent semi-reflecting film to the camera lens;
The distance between Printing screen and semi-transparent semi-reflecting center membrane are L, and the distance between PCB and semi-transparent semi-reflecting center membrane are N;The distance between semi-transparent semi-reflecting center membrane and reflective mirror are D;L=N+2 × D.
As a kind of preferred embodiment of the invention: upper LED light source, lower LED light source, prism, camera lens and industrial camera In shell;Power supply and controller are additionally provided in shell.
As a kind of preferred embodiment of the invention: the center light transmission of the upper LED light source, the periphery setting of upper surface One circle LED lamp bead;The center light transmission of the lower LED light source, the one circle LED lamp bead of periphery setting of lower surface.
As a kind of preferred embodiment of the invention: the industrial camera is mounted on shell by Level tune component It is interior.
As a kind of preferred embodiment of the invention: the web plate MARK point and pcb board MARK point at least separately include Two.
The medicine have the advantages that
A kind of high accuracy prints machine double light path machine vision device of the present invention, comprising passing through two-dimentional driving mechanism driving movement And the visual-alignment component between Printing screen and PCB is set, two-dimentional driving mechanism can be with reference to existing cross slid platform etc. The product and existing public technology of the movement of XY two-dimensional directional may be implemented, in order to each MARK point is reliably aligned, It can be removed after aligning simultaneously, facilitate the relative motion of printed steel mesh and pcb board.
Visual-alignment component of the invention include prism, prism centers be arranged 45 degree inclination angles semi-transparent semi-reflecting film, it is semi-transparent partly The upper surface of anti-film is reflecting surface, and the lower surface of semi-transparent semi-reflecting film is transmission plane;Upper LED light source, prism is arranged in the top of prism Lower section lower LED light source is set, reflective mirror is set inside prism with the opposite one side of the transmission plane of semi-transparent semi-reflecting film, outside prism Portion, the side towards semi-transparent semi-reflecting film reflecting surface are provided with camera lens, and camera lens rear portion is provided with industrial camera;45 degree of inclination angles semi-transparent half Anti- film can be realized the reflection of positive reflecting surface and the horizontal direction light of back side transmission plane pass through and vertical light It reflects (this function and structure of 45 degree of inclination angle semi-transparent semi-reflecting films is the prior art);When the position for needing to read acquisition web plate MARK point When confidence ceases, LED light source in opening closes lower LED light source, and light is (similar to the separate of eye-observation, the light of body surface Corresponding object is then viewed into human eye) web plate MARK point is passed down through the centre of tree open area of upper LED light source and enters prism The light that the reflective surface of semi-transparent semi-reflecting film is reflected into horizontal direction enters camera lens, is obtained by industrial camera;It is acquired when needing to read When the location information of PCB editions MARK points, lower LED light source, LED light source in closing are opened, light is upward through by pcb board MARK point The reflecting mirror Hou Yuan described in reflector is returned on road after the transmission plane for the semi-transparent semi-reflecting film that the centre of tree open area of lower LED light source enters prism It is obtained into camera lens by industrial camera after passing back through the center of semi-transparent semi-reflecting film;In this way, which industrial camera collects reliably The location information and lower section pcb board MARK point information of the web plate MARK point of top so realize the calculating (coordinate to difference Position is calculated as the prior art, and executing the program that coordinate difference calculates using existing processor can be completed), it is calculated The adjustment process of next step is instructed after deviation, finally making deviation reach prescribed limit can be completed contraposition.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of specific embodiment of the invention.
Description of symbols:
1- Printing screen, 2- visual-alignment component, 3- web plate MARK point, the upper LED light source of 4-, 5- reflective mirror, 6- semi-transparent half Anti- film, LED light source under 7-, 8-PCB plate MARK point, 9-PCB, 10- prism, 11- camera lens, 12- industrial camera.
Specific embodiment
The specific embodiment of the invention is described with reference to the accompanying drawings and embodiments:
As shown in Figure 1, it illustrates a specific embodiment of the invention, as shown in Figure 1, a kind of high accuracy prints of the present invention Machine double light path machine vision device, for aligning the MARK point on Printing screen and PCB, comprising passing through two-dimentional driving machine Structure drives visual-alignment component mobile and being arranged between Printing screen and PCB, and the visual-alignment component includes prism, rib The semi-transparent semi-reflecting film at 45 degree of inclination angles is arranged in mirror center, and the upper surface of semi-transparent semi-reflecting film is reflecting surface, the lower surface of semi-transparent semi-reflecting film For transmission plane;Upper LED light source is arranged in the top of prism, and lower LED light source, prism inside and semi-transparent semi-reflecting film is arranged in the lower section of prism Transmission plane opposite one side reflective mirror is set, outside prism, the side towards semi-transparent semi-reflecting film reflecting surface is provided with camera lens, mirror Back of head is provided with industrial camera;
The central optical path at the center of the semi-transparent semi-reflecting film, the center of camera lens and industrial camera is overlapped.
Preferably, as shown in the figure:
The upper upward irradiation light of LED light source, the light of web plate MARK point are downwardly into the reflection of the semi-transparent semi-reflecting film of prism Face back reflection is to the camera lens;
Irradiation light under lower LED light source phase, the light of pcb board MARK point are upwardly into the transmission of the semi-transparent semi-reflecting film of prism Face has reflex to mirror surface back reflection to the transmission plane of semi-transparent semi-reflecting film after pass through semi-transparent semi-reflecting film to the camera lens;
The distance between Printing screen and semi-transparent semi-reflecting center membrane are L, and the distance between PCB and semi-transparent semi-reflecting center membrane are N;The distance between semi-transparent semi-reflecting center membrane and reflective mirror are D;L=N+2 × D.The size relationship of the present embodiment can allow calculating Process is more simple, it is, then the optical path distance of web plate MARK point is equal with PCB plate MARK point optical path distance, so that The standard of calculating process is identical, reduces conversion process, can more be rapidly performed by position versus.
Preferably, as shown in the figure: upper LED light source, lower LED light source, prism, camera lens and industrial camera are located in shell;Shell It is additionally provided with power supply and controller in vivo.Two-dimentional driving mechanism directly drives the mobile movement that whole device can be realized of shell.
Preferably, as shown in the figure: the center light transmission of the upper LED light source, the one circle LED lamp bead of periphery setting of upper surface; The center light transmission of the lower LED light source, the one circle LED lamp bead of periphery setting of lower surface.The clever structure of the present embodiment, can be both Guarantee the irradiation brightness of LED light source, moreover it is possible to guarantee that light smoothly passes through LED light source.
Preferably, as shown in the figure: the industrial camera is mounted in shell by Level tune component.
Preferably, as shown in the figure: the web plate MARK point and pcb board MARK point at least separately include two.Two groups of MARK Point, which can be realized, more accurately to be aligned.
The preferred embodiment for the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention It makes a variety of changes, these variations are related to the relevant technologies well-known to those skilled in the art, these both fall within the invention patent Protection scope.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not It is limited to specific embodiment, the scope of the present invention is defined by the following claims.

Claims (6)

1. a kind of high accuracy prints machine double light path machine vision device, for the MARK point on Printing screen and PCB to be carried out pair Position, it is characterised in that: comprising driving mobile by two-dimentional driving mechanism and the visual-alignment between Printing screen and PCB being arranged in Component, the visual-alignment component include prism, prism centers be arranged 45 degree of inclination angles semi-transparent semi-reflecting film, semi-transparent semi-reflecting film it is upper Surface is reflecting surface, and the lower surface of semi-transparent semi-reflecting film is transmission plane;Upper LED light source is arranged in the top of prism, sets below prism It sets lower LED light source, reflective mirror is set inside prism with the opposite one side of the transmission plane of semi-transparent semi-reflecting film, outside prism, towards half The side of saturating half anti-film reflecting surface is provided with camera lens, and camera lens rear portion is provided with industrial camera;
The central optical path at the center of the semi-transparent semi-reflecting film, the center of camera lens and industrial camera is overlapped.
2. a kind of high accuracy prints machine double light path machine vision device as described in claim 1, it is characterised in that:
The upper upward irradiation light of LED light source, after the reflecting surface for the semi-transparent semi-reflecting film that the light of web plate MARK point is downwardly into prism Reflex to the camera lens;
The transmission plane of irradiation light under lower LED light source phase, the semi-transparent semi-reflecting film that the light of pcb board MARK point is upwardly into prism has Semi-transparent semi-reflecting film is passed through to the camera lens after reflexing to mirror surface back reflection to the transmission plane of semi-transparent semi-reflecting film;
The distance between Printing screen and semi-transparent semi-reflecting center membrane are L, and the distance between PCB and semi-transparent semi-reflecting center membrane are N;Half The distance between saturating half anti-center membrane and reflective mirror are D;L=N+2 × D.
3. a kind of high accuracy prints machine double light path machine vision device as described in claim 1, it is characterised in that: upper LED light Source, lower LED light source, prism, camera lens and industrial camera are located in shell;Power supply and controller are additionally provided in shell.
4. a kind of high accuracy prints machine double light path machine vision device as described in claim 1, it is characterised in that: on described The center light transmission of LED light source, the one circle LED lamp bead of periphery setting of upper surface;The center light transmission of the lower LED light source, lower surface Periphery setting one circle LED lamp bead.
5. a kind of high accuracy prints machine double light path machine vision device as described in claim 1, it is characterised in that: the industry Camera is mounted in shell by Level tune component.
6. a kind of high accuracy prints machine double light path machine vision device as claimed in claim 2, it is characterised in that: the web plate MARK point and pcb board MARK point at least separately include two.
CN201910099427.4A 2019-01-31 2019-01-31 A kind of high accuracy prints machine double light path machine vision device Pending CN109927401A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112804826A (en) * 2021-04-09 2021-05-14 武汉先河激光技术有限公司 Registration device based on machine vision
CN113115517A (en) * 2021-04-09 2021-07-13 武汉先河激光技术有限公司 Registration method based on machine vision

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Publication number Priority date Publication date Assignee Title
JPH0836228A (en) * 1994-07-21 1996-02-06 Hitachi Ltd Projection type display device
FR2852700A1 (en) * 2003-03-19 2004-09-24 Centre Nat Rech Scient Optical-acoustic imaging method for object e.g. biological tissue, involves applying incident wave on object for generating transmission signal wave and generating acoustic vibration in direction of object
CN1971586A (en) * 2006-11-30 2007-05-30 华南理工大学 L-shaped twin-lens image collecting device used for paste solder printing
CN201058521Y (en) * 2007-07-10 2008-05-14 东莞康视达自动化科技有限公司 Single lens image collecting device for reference alignement and detection
US20080130068A1 (en) * 2006-11-30 2008-06-05 Zhang Xianmin Imaging apparatus for fully automatic screen printer
CN104536151A (en) * 2014-12-20 2015-04-22 中国科学院西安光学精密机械研究所 Quick alignment device
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CN108032143A (en) * 2017-10-26 2018-05-15 东莞市准锐自动化设备有限公司 A kind of Bidirectional observation instrument
CN207850294U (en) * 2018-02-09 2018-09-11 中国计量大学 A kind of slide fastener sized image harvester and the online vision detection system based on the device
CN108655693A (en) * 2018-03-05 2018-10-16 北京理工大学 A kind of quick device and method for changing visual field towards coaxial alignment assembly system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0836228A (en) * 1994-07-21 1996-02-06 Hitachi Ltd Projection type display device
FR2852700A1 (en) * 2003-03-19 2004-09-24 Centre Nat Rech Scient Optical-acoustic imaging method for object e.g. biological tissue, involves applying incident wave on object for generating transmission signal wave and generating acoustic vibration in direction of object
CN1971586A (en) * 2006-11-30 2007-05-30 华南理工大学 L-shaped twin-lens image collecting device used for paste solder printing
US20080130068A1 (en) * 2006-11-30 2008-06-05 Zhang Xianmin Imaging apparatus for fully automatic screen printer
CN201058521Y (en) * 2007-07-10 2008-05-14 东莞康视达自动化科技有限公司 Single lens image collecting device for reference alignement and detection
CN104536151A (en) * 2014-12-20 2015-04-22 中国科学院西安光学精密机械研究所 Quick alignment device
CN106980178A (en) * 2017-03-24 2017-07-25 浙江大学 A kind of phase-type LCoS image-signal processing methods and near-eye display system
CN108032143A (en) * 2017-10-26 2018-05-15 东莞市准锐自动化设备有限公司 A kind of Bidirectional observation instrument
CN207850294U (en) * 2018-02-09 2018-09-11 中国计量大学 A kind of slide fastener sized image harvester and the online vision detection system based on the device
CN108655693A (en) * 2018-03-05 2018-10-16 北京理工大学 A kind of quick device and method for changing visual field towards coaxial alignment assembly system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112804826A (en) * 2021-04-09 2021-05-14 武汉先河激光技术有限公司 Registration device based on machine vision
CN113115517A (en) * 2021-04-09 2021-07-13 武汉先河激光技术有限公司 Registration method based on machine vision

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Application publication date: 20190625