A kind of draping adaptive printing device of crystal silicon photovoltaic solar battery
Technical field
The utility model relates to computer vision precision positioning technologies, are specifically used for such as crystal silicon solar-energy photovoltaic battery silk
Net printing equipment, in particular to the draping adaptive printing device of a kind of crystal silicon photovoltaic solar battery.
Background technique
Crystal silicon solar-energy photovoltaic battery screen printing apparatus is a kind of automatically to realize silk screen and printing based on machine vision
The print system of object fine registration.The feelings of silk screen are needed replacing due to inevitably occurring in production process because of silk screen rupture etc.
Condition, and because mechanical erection error is different, after replacement silk screen every time, the position of two pull spring net of front and back can not be overlapped well
Together, so, after replacing silk screen every time, the parameter for taking some time adjustment equipment is required, so that the silk screen newly replaced
Adapt to production.
In order to realize the accuracy of printing, after replacing silk screen, the position and direction parameter of new silk screen can be redeterminated again,
New silk screen is set to adapt to production.But this method needs to expend the more time.It can also be before silk screen be installed, to Three Degree Of Freedom silk screen
The kinematic parameter of motion platform is accurately demarcated, and after installing silk screen every time, measures the fixed position of silk screen relative to new fortune
The deviation of the base position of moving platform, then the method that the deviation is compensated as web position make new silk screen adapt to production.But it should
Method needs in addition to install other measuring devices additional when the kinematic parameter of Three Degree Of Freedom silk screen motion platform under survey, higher cost,
And operation difficulty is larger.
Utility model content
The purpose of the utility model is to overcome shortcoming and deficiency in the prior art, provide a kind of crystal silicon photovoltaic solar energy
The draping adaptive printing device of battery, can guarantee measurement accuracy, and effectively improve silk screen replacement efficiency, to improve printing
Production efficiency.
In order to achieve the above object, the utility model adopts the following technical scheme:
A kind of draping adaptive printing device of crystal silicon photovoltaic solar battery, including four into plate positioning camera, into plate
Positioning camera fixed frame, four bearing ink pads, a rotation positioning platform, rack platform, silk screen, silk screen motion platform and control
System;It is described to be arranged on the rack platform into plate positioning camera fixed frame, rotation positioning platform and silk screen motion platform, it is described
Four are fixed on described on plate positioning camera fixed frame into plate positioning camera, and four bearing ink pads are arranged in the rotation
Turn on locating platform, the silk screen is mounted and fixed on the end of silk screen motion platform;Wherein, a bearing ink pad is a work
Position into the bearing ink pad below plate positioning camera is into plate station positioned at four, and bearing ink pad below silk screen is printing station;
The control system includes upper computer and lower computer, and the host computer and four connect into plate positioning camera and slave computer
It connects, the slave computer is connect with the rotation positioning platform and silk screen motion platform.
As a preferred technical solution, the host computer be used for obtain slave computer and camera transmission board kinematic parameter and
Picture, and carry out data operation;The slave computer is used to receive the data of host computer and controls rotation positioning platform and silk screen fortune
The movement of moving platform.
The silk screen motion platform is Three-degree-of-freedom motion platform as a preferred technical solution, in the platform end
Three degree of freedom is respectively the direction X, Y, T.
The working principle of utility model device: it is demarcated first into plate positioning camera and silk screen motion platform, then in silk
Net motion platform end case fills a pull spring net and prints to silicon wafer, followed by into plate positioning camera to passing through rotational positioning
Platform rotates through the printing silicon wafer come and takes pictures, and the image transmitting that will take pictures, to host computer, host computer passes through machine vision pair
Image is handled, so that it is determined that and recording the relative positional relationship of the silk screen Yu silk screen motion platform;Then silk screen is replaced, is pressed
New web position is determined and recorded according to foregoing manner;Then host computer is using adaptive algorithm to precursor net, new silk screen and reality
When handled into the positional relationship of plate silicon wafer, calculate silk screen motion platform three freedom in the production process after this draping
Due adjustment amount is spent, so that new silk screen be driven to arrive at target position, and printing position is dropped to, printing is executed to silicon wafer.
The utility model has the following advantages compared with the existing technology and effect:
(1) utility model device uses machine vision metrology, cooperates high-precision rotary locating platform, by measuring silk screen
Grid line index point after printing measures silk screen coordinate in unified coordinate system indirectly, and the device is easy, practical, quick, accurate,
Accuracy guarantee is provided simultaneously for subsequent calculating.
(2) utility model device need to only obtain the relative position parameter of a pull spring net, no longer need to adjust after subsequent draping
The adaptive approach operational process of examination is simple, it is easy to accomplish automation, time needed for saving draping post debugging equipment improve life
Amount efficiency.
Detailed description of the invention
Fig. 1 is the shaft side figures such as the draping adaptive printing apparatus structure of the utility model crystal silicon photovoltaic solar battery;
Fig. 2 is the draping adaptive printing apparatus structure top view of the utility model crystal silicon photovoltaic solar battery;
Fig. 3 is the draping adaptive printing device right view of the utility model crystal silicon photovoltaic solar battery;
Fig. 4 is the three degree of freedom direction schematic diagram of the Three Degree Of Freedom silk screen motion platform of the utility model;
Fig. 5 is the printing process process of the draping adaptive printing device of the utility model crystal silicon photovoltaic solar battery
Figure;
Fig. 6 a~Fig. 6 c is the schematic diagram of the utility model adaptive algorithm;Wherein Fig. 6 a is determining precursor net and new silk screen
The schematic diagram of relative position;Fig. 6 b is the schematic diagram of determining position of silicon wafer;Fig. 6 c is that precursor net reaches the stylish silk screen of virtual location
Translation is rotated to the schematic diagram of position of silicon wafer;
Show in FIG. 1 to FIG. 4: 1-into plate positioning camera;2-camera fixed frames;3-bearing ink pads;4-rotational positionings are flat
Platform;5-rack platforms;6-silk screens;7-Three Degree Of Freedom silk screen motion platforms.
Specific embodiment
The utility model in order to better understand is further described with reference to the accompanying drawings and examples, but practical
Novel embodiment is without being limited thereto.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, the draping adaptive printing device of a kind of crystal silicon photovoltaic solar battery, including four
It is a into plate positioning camera 1, into plate positioning camera fixed frame 2, four bearing ink pad 3, one rotation positioning platform 4, rack platform 5, silk
Net 6, Three Degree Of Freedom silk screen motion platform 7 and control system;It is described into plate positioning camera fixed frame 2, rotation positioning platform 4 and three
Freedom degree silk screen motion platform 7 is arranged on the rack platform 5, described four into plate positioning camera 1 be fixed on it is described into
On plate positioning camera fixed frame 2, four bearing ink pads 3 are arranged on the rotation positioning platform 4, and the installation of silk screen 6 is simultaneously
It is fixed on the end of Three Degree Of Freedom silk screen motion platform 7;Wherein, a bearing ink pad is a station, is located at four and positions into plate
The bearing ink pad of 1 lower section of camera is that the bearing ink pad into plate station, positioned at 6 lower section of silk screen is printing station;
The control system includes upper computer and lower computer, and the host computer and four connect into plate positioning camera and slave computer
It connects, the slave computer is connect with the rotation positioning platform and Three Degree Of Freedom silk screen motion platform;The host computer is for obtaining
The board kinematic parameter and picture of slave computer and camera transmission, and carry out data operation;The slave computer is for receiving host computer
The data of processing and the movement for controlling rotation positioning platform and silk screen motion platform.
In the present embodiment, the three degree of freedom of the Three Degree Of Freedom silk screen motion platform end is respectively X, Y, T, is such as shown
It is intended to shown in 4;
In the present embodiment, as shown in figure 5, a kind of printing of the draping adaptive printing device of crystal silicon photovoltaic solar battery
Method includes the following steps:
Step 1, installation complete machine, and complete the mark into plate positioning camera and Three Degree Of Freedom silk screen motion platform kinematic parameter
It is fixed;
In the present embodiment, after installing complete machine, four acquisition parameters into plate positioning camera are rationally set;Routinely
Method completes four calibration into plate camera and Three Degree Of Freedom silk screen motion platform kinematic parameter, makes four cameras and three certainly
It can be unified into unified coordinate system by the movement of degree silk screen motion platform.
Step 2 loads onto a pull spring net, determines and records the relative positional relationship of the silk screen Yu silk screen motion platform;
In the present embodiment, it is in Three Degree Of Freedom silk screen motion platform at benchmark position, then opens silicon wafer into plate four
In bearing ink pad, successively printed on every silicon wafer by silk screen it is primary, finally by rotation positioning platform successively by silicon wafer from printing
Station rotary triggers camera and takes pictures, by where printing mark object on silicon wafer in machine vision metrology photo into plate station
Position, the base position where obtaining indirectly and recording the silk screen in unified coordinate system.
Step 3, replacement silk screen, determine and record new web position;
In the present embodiment, the silk screen loaded onto step 2 is removed, and changes new silk screen, injects printing slurry;Control
The movement of Three Degree Of Freedom silk screen motion platform, makes its actuating station return benchmark position;It successively opens into silicon wafer four on bearing ink pad, three freely
Degree silk screen motion platform remains stationary on the direction X, Y, T, every time 90 degree of rotation positioning platform of rotation, successively on four silicon wafers
Print grid line;The index point position that four silicon wafer upper surfaces print successively is measured by machine vision, is calculated indirectly more
Benchmark position of the silk screen in unified coordinate system after changing, and then the relative position being calculated between new silk screen and precursor net is closed
System.
Step 4, by adaptive algorithm, calculate in real time X required for Three Degree Of Freedom silk screen motion platform before printing every time,
Y, the amount of exercise of T;In the present embodiment, adaptive algorithm signal is as shown in Fig. 6 a~Fig. 6 c.By preceding step it is known that as schemed
Shown in 6a, in unified coordinate system, if the base position of precursor net is (XA,YA), new silk screen base position is (XB,YB), new silk
Angle between net benchmark position and the benchmark position of precursor net is θ;When in real time into plate silicon wafer, as shown in Figure 6 b, by four into plate
The real time position that positioning camera can measure silicon wafer is (XC,YC), the angle of silicon wafer and new silk screen is α;So as fig. 6 c,
New silk screen passes through around its center rotation alpha, then translates (X in X directionC-XB), (Y is translated along Y-directionC-YB), then new silk screen can be made rigid
It covers above silicon wafer well, i.e., new silk screen reaches target position;The virtual location of precursor net benchmark position also can be considered precursor net at this time
Around new silk screen center rotation alpha, then (X is translated in X directionC-XB), (Y is translated along Y-directionC-YB) obtain, precursor net benchmark after movement
The virtual location of position is (XA',YA'), the virtual location of precursor net benchmark position can be rotated in conjunction with point in plane around arbitrary point at this time
Formula and translation formula calculate, as follows after abbreviation:
XA'=(XA-XB)×cosα-(YA-YB)×sinα+XC
YA'=(XA-XB)×sinα-(YA-YB)×cosα+YC
The virtual location of precursor net benchmark position and the angle of its original benchmark position are α.
After obtaining the virtual location of real-time precursor net benchmark position, according to the Three Degree Of Freedom silk screen motion platform of step 1 acquisition
The relative positional relationship of precursor net benchmark position and Three Degree Of Freedom silk screen motion platform that kinematic parameter and step 2 obtain, calculates silk
Umber of pulse needed for the three degree of freedom axis of net motion platform moves to target position, i.e., each axis move distance/each axis movement
Pulse equivalency, when precursor net then being moved to current base position virtual location by controlling Three Degree Of Freedom silk screen motion platform,
New silk screen can arrive at target position, and drop to printing position, execute printing.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the protection scope of the utility model patent should subject to the claims.