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 PDFInfo
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- 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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- reflecting film
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- light source
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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
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099427.4A CN109927401A (en) | 2019-01-31 | 2019-01-31 | A kind of high accuracy prints machine double light path machine vision device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099427.4A CN109927401A (en) | 2019-01-31 | 2019-01-31 | A kind of high accuracy prints machine double light path machine vision device |
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| Publication Number | Publication Date |
|---|---|
| CN109927401A true CN109927401A (en) | 2019-06-25 |
Family
ID=66985373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910099427.4A Pending CN109927401A (en) | 2019-01-31 | 2019-01-31 | A kind of high accuracy prints machine double light path machine vision device |
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Cited By (2)
| 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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| 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 |
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| 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 |
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Patent Citations (10)
| 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 |
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Cited By (2)
| 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 |