CN106825958A - Integrated welding is agreed to play and takes the photograph structure and battery core automatic welding detection means and method - Google Patents
Integrated welding is agreed to play and takes the photograph structure and battery core automatic welding detection means and method Download PDFInfo
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- CN106825958A CN106825958A CN201710157425.7A CN201710157425A CN106825958A CN 106825958 A CN106825958 A CN 106825958A CN 201710157425 A CN201710157425 A CN 201710157425A CN 106825958 A CN106825958 A CN 106825958A
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- pedestal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
Agreed to play the present invention relates to integrated welding and take the photograph structure and battery core automatic welding detection means and method, the welding shoots structure by by illumination light and laser common optical pathways, two functional devices of different nature of laser welding and image taking are made to unite two into one, including pedestal, picture shooting assembly, laser input light path component and common optical pathways component, picture shooting assembly includes industrial camera, laser input light path component includes collimation cylinder and water-cooled module, common optical pathways component includes welding camera lens, industrial camera is provided with taking lens, collimation cylinder, industrial camera, welding camera lens is connected on pedestal, water-cooled module is located on pedestal, welding camera lens is oppositely arranged with taking lens, and the coated reflection microscope group at the reflecting surface and pedestal base angle at 45 ° being parallel to each other is provided with pedestal.The present invention makes welding laser and shoots illumination common optical pathways, simplifies structure, make image obtain can after welding terminates moment complete, to make need for detecting, saving space resources, improving production efficiency.
Description
Technical field
More specifically refer to that integrated welding connects the present invention relates to the automatic laser welding detection device of electrical core of power battery
Shoot structure and battery core automatic welding detection means and method.
Background technology
With the adjustment and the intensive appearance of new-energy automobile support policy of national industrial policies, new-energy automobile market
Explosive growth is presented, electrokinetic cell is the core of the sector, and the development of new-energy automobile market causes that electrokinetic cell enterprise is confused
Confusingly expand production, market competition is white-hot.In order to constantly meet the requirement of more high efficiency and quality management and control, strengthen the market of product
Competitive advantage, improves occupation rate of market, and the electrokinetic cell production line not high to existing automaticity enters technological transformation, Cheng Liaodong
The inevitable choice of power battery production enterprise.
In electrokinetic cell automatic assembly line, the laser welding of cell polar ear is important basic operation, its welding quality
Directly affect the qualification rate of finished product.The operation generally uses laser welding in actual production, because Laser Welding is (particularly automatic
Laser welding) complex process, influence the factor of welding quality more, cause solder joint qualification rate to fluctuate larger.Therefore, improving sharp
While photocoagulation technique, stabilization welding quality, defective products must also be rejected by strengthening on-line checking, under preventing defective products from flowing into
Procedure.
Existing three kinds of detection modes, the first is to use artificial direct-on-line or offline inspection, but efficiency is low, detection speed
Degree is slow, and stability is not high；Second is vision-based detection and the semi-automatic method being manually combined, but automaticity is not high, difficult
To adapt to the production requirement of automation and intelligentification；The third is that welding is examined with the non-integral that online vision automatic detection is separated
Survey method occupies more space resources, it is necessary to two stations are completed, while coordinating complexity between increased operation, influences
The further lifting of production efficiency.
Chinese patent 201310676529.0 discloses a kind of welder and its welding method, and the welder includes machine
Tool arm 8 and set laser welding head on the robotic arm, the infrared light for shooting real-time weld seam or the three-dimensional of ultraviolet light first into
The three-dimensional imaging instrument of visible ray second as instrument and for shooting sizing weld seam.The welding method includes step：1. Laser Welding is used
Joint processing criterion weld seam on material to be processed, real-time weld image and sizing weld seam figure of the smart host to the standard weld
As carrying out Data Analysis Services and being recorded as canonical parameter；When 2. carrying out laser welding, smart host is to the first three-dimensional imaging instrument
The sizing weld image that the real-time weld image for obtaining and the second three-dimensional imaging instrument are obtained carries out Data Analysis Services and is recorded as
Real-time parameter；3. more each real-time parameter of smart host and canonical parameter.The present invention can be widely used in the laser of various materials
In welding production, effectively judge whether real-time weld seam is qualified.But it is complex that the welder has structure, installation occupies sky
Between big problem.
Taken the photograph and vision on-line measuring device therefore, it is necessary to design a kind of integrated welding and agree to play, realize electrical core of power battery
The automation and intellectuality of detection are produced, detection efficiency and stability is improved, testing cost is reduced, while space resources is saved,
Improving production efficiency.
The content of the invention
Defect it is an object of the invention to overcome prior art, there is provided integrated welding is agreed to play and takes the photograph structure and battery core automatic welding
Connect detection means and method.
To achieve the above object, the present invention uses following technical scheme：Integrated welding is agreed to play and takes the photograph structure, by by illumination light
With laser common optical pathways, two functional devices of different nature of laser welding and image taking is united two into one, it include pedestal,
Picture shooting assembly, laser input light path component and common optical pathways component, the picture shooting assembly include industrial camera, and the laser is defeated
Entering optical path component includes collimation cylinder and water-cooled module, and the common optical pathways component includes welding camera lens, on the industrial camera
Taking lens is provided with, the collimation cylinder, industrial camera, welding camera lens are connected on the pedestal, the water-cooled module position
In on pedestal, the welding camera lens is oppositely arranged with the taking lens, and the reflecting surface being parallel to each other is provided with the pedestal
With the coated reflection microscope group at pedestal base angle at 45 °, welded when to welding assembly, laser is input into from collimation cylinder, by institute
State after coated reflection microscope group enters into the welding lens focus and arrive at welding position, the lighting source under pedestal is launched
Illumination light, by entering the welding camera lens after welding position reflection, and transmits to the taking lens, in the industrial camera
Interior formation image.
Its further technical scheme is：The welding camera lens is with the taking lens respectively positioned at the two ends of the pedestal.
Its further technical scheme is：Collimation microscope group is connected between the collimation cylinder and the pedestal, laser passes through institute
After stating collimation cylinder, transmitted to the coated reflection microscope group via collimation microscope group.
Its further technical scheme is：The welding camera lens includes the laser condensing lens, protection eyeglass, the mirror sleeve that are sequentially connected
And Jing Gai, the mirror sleeve is connected by counter flange with the pedestal.
Its further technical scheme is：The coated reflection microscope group includes two metallic-membrane plating reflectors, and two plated films are anti-
The reflecting surface for penetrating mirror is parallel, and with pedestal base angle at 45 °, one end of the metallic-membrane plating reflector respectively with the inner side of the pedestal
Wall is connected.
Agree to play and take the photograph structure, transmission present invention also offers battery core automatic welding detection means, including above-mentioned integrated welding
Band, mechanical arm, laser-beam welding machine and the manipulator for removing substandard product；The mechanical arm is connected with the pedestal,
It is connected with the pedestal as the illuminating lamp of lighting source；The mechanical arm and the manipulator are located at the transmission respectively
The side of band；The upper end of the collimation cylinder is provided with optical fiber interface, and the laser-beam welding machine is connected by optical fiber with the optical fiber interface
Connect.
Its further technical scheme is：The automatic welding vision on-line measuring device also includes industrial computer, display, drive
Dynamic device, image pick-up card and alarm, the driver, industrial camera, welding camera lens, display, alarm, IMAQ
Card and the laser-beam welding machine are connected with the industrial computer respectively.
Present invention also offers the visible detection method of battery core automatic welding detection means, the detection method includes：
S1, carry out welding to battery core both sides lug respectively by " welding-shoot " order and shoot to obtain both sides tab welding portion
The image of position；
S2, the position data for extracting described image anchor point；
S3, judge described image anchor point position whether with set by the qualified cell polar ear of welding as examination criteria
Reference position overlap, if misaligned, into S4 steps, if overlapping, into S5 steps；
S4, its side-play amount is calculated by the view data for shooting, carry out position correction, and enter S5 steps；
S5, on the basis of described image anchor point, described image is split, obtain each cut zone solder joint melting zone
Scope, radius and area, average gray value, mean contrast value, position of centre of gravity, horizontal continuity degree, vertical continuous degree, as each
The characteristic parameter of cut section solder joint, into S6 steps
S6, judge two lugs of battery core described each cut section solder joint characteristic parameter it is whether qualified, if qualified, enter
S8 steps；
S7, battery core welding are unqualified, and industrial computer is additional not to be conformed to case marking, illustrate and export removal instruction, manipulator by its
Remove streamline；
S8, MES carry out data statistics, complete a round of visits.
Its further technical scheme is：Judge the side of the characteristic parameter of described each cut section solder joint of two lugs of battery core
Method, if the solder joint melting zone radius and area in each region of described image, average gray value, mean contrast value, center-of-gravity value, level company
Continuous angle value, vertical continuous angle value are qualified, then the battery core side tab welding is qualified, only the qualified electricity of both sides tab welding
The tab welding of core is just qualified, and otherwise cell polar ear welding is unqualified.For welding underproof battery core, MES management systems are attached
Plus unqualified explanation goes forward side by side line number according to statistics, industrial computer output removes instruction, and manipulator is moved out streamline.
Its further technical scheme is：Before the step of image of two lugs for obtaining battery core respectively, also include：
Before on-line checking, the both sides tab welding region of qualified battery core will be welded with anchor point by inspection, identification
On the basis of be individually positioned on welding position, its welding region is taken pictures, obtain standard picture simultaneously extract its characteristic parameter
Value, is stored in database, used as the standard for judging.
Compared with the prior art, the invention has the advantages that：Integrated welding of the invention is agreed to play and takes the photograph structure, swashs welding
Light and shoot illumination common optical pathways, simplify structure, make image obtain can after welding terminates moment complete, to make detection
Need, be not take up the extra time, improve detection and production efficiency；It is not required to set special shooting station, has saved space resources, drop
Low production cost.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 agrees to play the main structure diagram for taking the photograph structure for the integrated welding that the specific embodiment of the invention is provided；
Fig. 2 agrees to play the configuration schematic diagram for taking the photograph structure for the integrated welding that the specific embodiment of the invention is provided；
The main structure diagram of the automatic soldering device that Fig. 3 is provided for the specific embodiment of the invention；
The schematic flow sheet of the vision-based detection of the automatic soldering device that Fig. 4 is provided for the specific embodiment of the invention.
Reference
The industrial computer of 10 pedestal 11
The display of 12 driver 13
The manipulator of 14 alarm 15
The laser-beam welding machine of 16 image pick-up card 17
The illumination path of 18 lug 1
The taking lens of 20 industrial camera 21
The laser optical path of 22 flange 2
The 30 collimation optical fiber interfaces of cylinder 31
The connector of 32 water-cooled module 33
The 34 collimation conveyer belts of microscope group 3
The containment vessel of 40 counter flange 41
The mirror sleeve of 42 laser condensing lens 43
44 protection eyeglass 45 Jing Gai
The code reader of 4 welding assembly 5
The position sensor of 60 coated reflection microscope group 6
The mechanical arm of 7 optical fiber 8
9 illuminating lamps
Specific embodiment
In order to more fully understand technology contents of the invention, technical scheme is entered with reference to specific embodiment
One step introduction and explanation, but it is not limited to this.
Specific embodiment as shown in figures 1-4, the integrated welding that the present embodiment is provided is agreed to play and takes the photograph structure, can be used in
In the laser beam welding of lug 18 of battery core, or can be used in the laser beam welding of other workpiece, realize in welding
Photo is shot after end in time to make the need for detecting, detection and production efficiency is improved, without occupying more space resources, in drop
While low testing cost, the stability of detection quality is improve.
By by illumination light and laser common optical pathways, making two functional devices of different nature of laser welding and image taking
Unite two into one, it includes pedestal 10, picture shooting assembly, laser input light path component and common optical pathways component, picture shooting assembly includes
Industrial camera 20, laser input light path component includes collimation cylinder 30 and water-cooled module 32, and the common optical pathways component includes weldering
Camera lens is connect, the industrial camera 20 is provided with taking lens 21, and the collimation cylinder 30, industrial camera 20, welding camera lens connect respectively
It is connected on the pedestal 10, the water-cooled module 32 is located on pedestal 10, the welding camera lens is relative with the taking lens 21
Set, and the coated reflection microscope group 60 at the reflecting surface and base of pedestal 10 angle at 45 ° being parallel to each other is provided with the pedestal 10, when
Welding assembly 4 is welded, laser is input into from collimation cylinder 30, and the welding mirror is entered into by the coated reflection microscope group 60
Head arrives at welding position after focusing on, and the lighting source under pedestal 10 sends illumination light, enters by after welding position reflection
The welding camera lens, and transmit to the taking lens 21, image is formed in the industrial camera 20.
Above-mentioned plated film microscope group only produces reflex to the laser of specific wavelength, reflection does not occur to other light and makees
With, it is allowed to its former road transmission.The pedestal 10 is the carrier of picture shooting assembly, laser input light path component and common optical pathways component,
The collecting of laser optical path 2 and illumination path 1, integrated and shared is realized by the pedestal 10.
Welding camera lens is located at the two ends of pedestal 10 with taking lens 21 respectively, specifically, taking lens 21 is located at the pedestal
10 top, welding camera lens is located at the bottom of pedestal 10.
Collimation microscope group 34 is connected between collimation cylinder 30 and the pedestal 10, after laser is by collimating cylinder 30, via collimation
Microscope group 34 is transmitted to coated reflection microscope group 60.Collimation microscope group 34 is installed in collimation cylinder 30 by connector 33, the He of connector 33
Pedestal 10 is connected by fastening screw；Water-cooled module 32 is distributed in the outer wall of collimation cylinder 30 and pedestal 10, collimates the upper end of cylinder 30
It is provided with the access port of optical fiber 7, welding laser is input to the integrated welding by optical fiber 7 from the mouth to be agreed to play and take the photograph structure, finally arrives at weldering
Implement welding in socket part position.
Welding camera lens includes the laser condensing lens 42, protection eyeglass 44, mirror sleeve 43, the mirror lid 45 that are sequentially connected, and mirror sleeve 43 is led to
Cross counter flange 40 also includes protection cap, the laser condensing lens 42, protection eyeglass 44 with the connecting welding camera lens of the pedestal 10
It is installed in counter flange 40 by mirror sleeve 43, microscope base, protection cap is installed in end, is connected by counter flange 40 and pedestal 10,
The laser condensing lens 42, protection eyeglass 44 have passed through special coating film treatment, and only the laser to specific wavelength occurs reflection work
With, it is allowed to the road transmission of visible ray original.
Laser is input into from the optical fiber interface 31 of collimation cylinder 30 and reaches base after collimation cylinder 30 and its collimation microscope group 34 are adjusted
Coated reflection microscope group 60 in seat 10, by the common optical pathways group after double 90 ° of direction change to the lower end of motor seat 10
Part, exports after over-focusing in common optical pathways component from end, finally arrives at welding position, implements welding.
The illuminating lamp 9 of the bottom of pedestal 10 carries out wide-angle irradiation to welding position, and welding position is reflected illumination light,
Reflected light enters common optical pathways from laser exit, in the common optical pathways through arrive at after protection eyeglass 44, Laser Focusing pedestal 10,
It is directed through after coated reflection microscope group 60 entering the imaging optical path of upper end, 20 one-tenth of industrial camera is arrived at after focusing on by shooting mirror
Picture.
Above-mentioned water-cooled module 32 is distributed in collimation cylinder 30, pedestal 10 and the outer wall of counter flange 40, and water-cooled module 32 is located at
On laser optical path 2, and it is connected with outer circulation water, to keep the stabilization of the temperature of laser optical path 2.
In addition, coated reflection microscope group 60 includes two metallic-membrane plating reflectors, the reflecting surface of two metallic-membrane plating reflectors is parallel,
And with the base of pedestal 10 angle at 45 °, the madial wall of one end of metallic-membrane plating reflector respectively with the pedestal 10 is connected.
As shown in figure 1, in figure 1 is that illumination path 1,2 is laser optical path 2；Above-mentioned illumination light and laser are in collimation cylinder
Converge in 30, but transmission direction is conversely, laser is entered by the optical fiber interface 31 of collimation cylinder 30, enters by coated reflection microscope group 60
Counter flange 40, by arriving at welding assembly 4 after the focusing of laser condensing lens 42.Illumination light is sent by lighting source, by welding
Part 4 is reflected into welding camera lens, by after laser condensing lens 42 and protection eyeglass 44, entering through counter flange 40 and imaging
Camera lens 21, arrives at industrial camera 20, forms image.
In the present embodiment, in coated reflection microscope group 60 and counter flange 40 laser condensing lens 42,44, eyeglass of protection
Laser is worked, reflex does not occur to illumination light.
Above-mentioned integrated welding is agreed to play and takes the photograph structure, is made welding laser and is shot illumination common optical pathways, simplifies structure, makes figure
As obtain can after welding terminates moment complete, to make need for detecting, be not take up the extra time, improve detection and production imitated
Rate；It is not required to set special shooting station, has saved space resources, reduced production cost.
As shown in figure 3, the present embodiment additionally provides battery core automatic welding detection means, including above-mentioned integrated welding is agreed to play
Take the photograph structure, conveyer belt 3, mechanical arm 8, laser-beam welding machine 17 and the manipulator 15 for removing substandard product；The machinery
Arm 8 is connected with the pedestal 10, is connected with the pedestal 10 as the illuminating lamp 9 of lighting source；The mechanical arm 8 and institute
Manipulator 15 is stated respectively positioned at the side of the conveyer belt 3；The upper end of the collimation cylinder 30 is provided with optical fiber interface 31, the laser
Bonding machine 17 is connected by optical fiber 7 with the optical fiber interface 31.
Further, automatic welding vision on-line measuring device also include industrial computer 11, display 13, driver 12,
Image pick-up card 16 and alarm 14, the driver 12, industrial camera 20, welding camera lens, display 13, alarm 14,
Image pick-up card 16 and the laser-beam welding machine 17 are connected with the industrial computer 11 respectively.The side of conveyer belt 3 is provided with coding
Reader 5 and position sensor 6, code reader 5 and position sensor 6 are connected with the industrial computer 11 respectively.Position
Sensor 6 provides the accurate location information of relay part to be welded for the shooting of video camera, in the present embodiment, uses resolution
Rate meets the encoding sensor of detection speed.
In addition, including camera control, image procossing, user management, Technical innova- tion (MES) software system in described device
System and help module.
In the present embodiment, code reader 5, position sensor 6 are located at the same side of conveyer belt 3, certainly, in other realities
Example is applied, can be determined by the coding position for being soldered thing with interlaced arrangement in the both sides of conveyer belt 3.
Along trigger-type camera under the above-mentioned use high speed monochrome industrial digital of industrial camera 20, manual zoom mirror is configured
Head, adjusts its visual field to meet the requirement of detection range before test according to detection position size；Image pick-up card 16 uses 256 grades
Gray scale, 768 × 576 resolution ratio, sample rate are that 65M transmission rates are the pci card of 132M/S.
In addition, driver 12 is used to drive mechanical arm 8, manipulator 15, laser-beam welding machine 17, industrial camera 20 and alarm
The work of device 14, illuminating lamp 9.
The operation principle of described device is as follows：Conveyer belt 3 conveys battery core to the induction range of code reader 5, and coding is read
Take device and read the coding transmission of battery core to industrial computer 11, during the induction range of the conveying battery core of conveyer belt 3 in-position sensor 6,
Industrial computer 11 is detected to the position of battery core, and when reaching setting position, industrial computer 11 starts mechanical arm 8 by driver 12 will
Integrated welding is agreed to play and takes the photograph the setting position that structure moves to the top of lug to be welded 18, and industrial computer 11 starts laser-beam welding machine 17 and exports
To optical fiber 7, laser enters the side lug 18 that laser optical path 2 reaches battery core to laser by collimating the optical fiber interface 31 of cylinder 30, presses
Side lug 18 is welded according to setting program, after the completion of laser-beam welding machine 17 send signal, industrial computer 11 to industrial computer 11
Receive after welding completes signal welding zone is taken pictures by the startup of driver 12 shooting illuminating lamp 9 and industrial camera 20, take pictures
Finish, close light, industrial camera 20 is sent to image pick-up card 16 after being cached to image, image pick-up card 16 is according to setting
Determine program carries out treatment conversion to view data, after the completion of be sent to industrial computer 11, after the completion of according to above-mentioned steps complete battery core
Side lug 18 welding shoot.
The coding that the welding zone picture signal code reader 5 of the lug 18 of battery core two is read is entered rower by industrial computer 11
Know, industrial computer 11 is pre-processed to image, split, recognized and understood etc. after operation the detection file of generation battery core and and sets
Fixed standard is compared and judges that whether qualified battery core both sides lug 18 welds, if qualified, qualified mark is exported, if not conforming to
Lattice, then industrial computer 11 controls alarm 14 to send sound and light alarm signal by driver 12, and is not conformed to by the removal of machine manipulator 15
The battery core of lattice.Test data finally enters statistical forms.
Above-mentioned welding assembly 4 is battery core, and certainly, in other embodiment, above-mentioned welding assembly 4 can need for other
The product of welding.
Above-mentioned industrial computer 11 uses the CPU industrial computers 11 of more than 3.0G, and it is highlighted that lighting source uses annular
Shadowless lamp is with top wide-angle mode directional lighting.
Manipulator 15 uses 4 shaft industrial robots of working range 0.8m, load-carrying 3Kg.
Agreed to play by setting integrated welding and take the photograph structure, conveyer belt 3, laser-beam welding machine 17 and for removing unqualified welding
The manipulator 15 of part 4, realizes full automatic welding and online vision-based detection, simulates identification process of the human eye to object,
The image information of the solder joint of lug 18 of the tested welding assembly 4 of line reading carries out the judgement of qualification, obtains speed image soon, efficiency
Height, low cost, this contactless detection, it is to avoid the secondary injury that human contact's detection is caused to detection object, adapt to
The requirement of automatic assembly line automation and intelligentification.
Further, as shown in figure 4, the present embodiment additionally provides the online vision inspection of battery core automatic welding detection means
Survey method, the detection method includes：
Before S10, on-line checking, will be placed by the welding region of inspection, the lug 18 for assert qualified welding assembly 4
On welding position, welding region is taken pictures after setting datum mark, obtain standard picture, extracted characteristic parameter and be stored in
In database, as the standard for judging.
S1, carry out welding to battery core both sides lug respectively by " welding-shoot " order and shoot to obtain both sides tab welding portion
The image of position；
S2, the position data for extracting described image anchor point；
S3, judge described image anchor point position whether with set by the qualified cell polar ear 18 of welding as examination criteria
Fixed reference position overlaps, if misaligned, into S4 steps, if overlapping, into S5 steps；
S4, the side-play amount that its anchor point is calculated by the view data for shooting, carry out position correction, enter next after amendment
Step；
S5, on the basis of described image anchor point, described image is split, obtain each cut zone solder joint melting zone
Scope, radius and area, average gray value, mean contrast value, position of centre of gravity, horizontal continuity degree, vertical continuous degree, as each
The characteristic parameter of cut section solder joint, into S6 steps；
S6, judge two lugs of battery core described each cut section solder joint characteristic parameter it is whether qualified, if qualified, enter
S8 steps；
S7, battery core welding are unqualified, and industrial computer is additional not to be conformed to case marking, illustrate and export removal instruction, manipulator by its
Remove streamline；
S8, MES carry out data statistics, complete a round of visits.
S1 steps, including coding reading, position detection and a series of actions of mechanical arm 8 to welding electric core, that is, transmit
Part to be welded 4 is transported to assigned position by band 3, code reader 5 read corresponding coding, position sensor 6 detect it is to be welded
After part reaches setting position, integral structure body is moved to the top of lug to be welded 18 by mechanical arm 8, and industrial computer 11 starts laser
The light extraction of bonding machine 17, integrated welding agree to play take the photograph structure according to setting program the side lug 18 of welding assembly 4 is welded,
Complete backward industrial computer 11 and send signal.Industrial computer 11 is received after welding completes signal and starts illuminating lamp 9 and industrial camera 20 pairs
Welding zone is taken pictures, and is taken pictures and is finished, and closes illuminating lamp 9, and industrial camera 20 is sent to image pick-up card after being cached to image
16 and eventually arrive at industrial computer 11, after the completion of integrated welding agree to play and take the photograph structure and other end lug 18 is welded, is taken pictures.
The step of S2 steps, locating point data of extraction image, mark point generally is set in the coverage of welded article,
And in this, as the datum mark (generally having two) of shooting positioning.Anchor point is online shooting image and the figure as criterion of acceptability
As the benchmark for comparing, if both shooting datum marks are inconsistent, that is, comparativity is lost.
S3 steps, judge described image anchor point position whether with the qualified cell polar ear 18 of welding as examination criteria
Whether the step of set reference position overlaps, judge it in setting model here by the coordinate data of detection positioning datum point
Enclose.
S5 steps, rule are closed to positioning datum point position or subregion is carried out by revised image, are obtained and are described the image
The characteristic parameter of quality, as the foundation of multilevel iudge.Certainly, for different other embodiments, it is also possible to set different
Cut zone, depending on concrete foundation actual conditions.
S6 steps, detect that whether extracted characteristic parameter in the range of setting, judges whether welding zone solder joint closes with this
Whether lattice and whole welding quality are qualified.There is the notice (sound and light alarm) after defective work, subsequent treatment and (remove production
Line) and data analysis statistical be the content of S7, S8 step, with the recourse property of implementation process, as the record text of production process
Part, is also the significant data foundation of sustained improvement.
S6 steps, the method for judging the characteristic parameter of described each cut section solder joint of cell polar ear, if each area of described image
The solder joint melting zone radius and area in domain, average gray value, mean contrast value, center-of-gravity value, horizontal continuity angle value, vertical continuous degree
Value is qualified, then the corresponding tab welding of the battery core is qualified, then judges whether opposite side lug is qualified by S2-S5 steps, only
The welding of lug 18 that both sides lug 18 welds the qualified battery core is just qualified, and otherwise cell polar ear welding is unqualified.For welding
Underproof battery core, industrial computer adds unqualified explanation and exports removal instruction, and manipulator is moved out streamline.MES is to inspection
Surveying result carries out data statistics.
In actual production process, produce the identical solder joint probability of image features relatively low, the figure of qualified solder joint
As characteristic ginseng value should be distributed in certain scope, corresponding acceptability limit is set according to real application data statistics
It is the important content of criterion of acceptability setting.
All of online shooting image and processing data are encoded (identification code) as main body using battery core.
In addition, the camera control software of described device can make device obtain the high-quality weld point image of lug 18, inside have
Parameter adjustment, setting interface that a series of and production environment is adapted；Image processing system becomes comprising absorbed weld point image
Change treatment and the foundation of certified products standard feature database；The foundation of certified products standard feature database need to be before on-line checking
Carry out, its collection of bag image, the extraction of characteristic parameter and storage, the setting of acceptability limit；The detection process of weld point image is
On-line implement process, including to the collection of the welding zone image of cell polar ear 18 that just welding is completed, the extraction of characteristic parameter, caching,
Transmission, whether qualified judgement and the mark treatment of output defective work etc.；Subscriber Management System is registered and authority to user
It is managed, production management (MES) software systems are used to carry out statistical analysis and output to the data during production；Help mould
Block is used to instruct the proper use of the system of user.
The visible detection method of above-mentioned automatic soldering device, it is online to read by simulating process of the human eye to object identification
The image information of the solder joint of lug 18 of tested welding assembly 4 is taken, and set in advance, corresponding acceptance value is compared analysis,
Judge whether tested welding assembly 4 is qualified, and qualified signal is exported if qualified, otherwise exports unqualified signal, together with this
When mechanical hand 15 remove underproof welding assembly 4, complete an automatic detection cycle, being obtained without of image takes extra
Time, fast with speed, efficiency high the features such as the degree of accuracy is high, eliminates examined personnel's subjective desire of testing result etc. artificial
The influence of factor, it is with a high credibility, it is thus also avoided that the secondary injury that human contact's detection is caused to detection object.
It is above-mentioned that technology contents of the invention are only further illustrated with embodiment, it is easier to understand in order to reader, but not
Represent embodiments of the present invention and be only limitted to this, any technology done according to the present invention extends or recreates, by of the invention
Protection.Protection scope of the present invention is defined by claims.
Claims (10)
1. integrated welding is agreed to play and takes the photograph structure, it is characterised in that by by illumination light and laser common optical pathways, making laser welding and figure
As shoot two functional devices of different nature unite two into one, it include pedestal, picture shooting assembly, laser input light path component and
Common optical pathways component, the picture shooting assembly includes industrial camera, and the laser input light path component includes collimation cylinder and water-cooled
Module, the common optical pathways component includes welding camera lens, and the industrial camera is provided with taking lens, the collimation cylinder, industry
Camera, welding camera lens are connected on the pedestal, and the water-cooled module is located on pedestal, welding camera lens and the bat
Take the photograph camera lens to be oppositely arranged, and the metallic-membrane plating reflector at the reflecting surface and pedestal base angle at 45 ° being parallel to each other is provided with the pedestal
Group, when being welded to welding assembly, laser enters into the welding from collimation cylinder input by the coated reflection microscope group
Welding position is arrived at after lens focus, the illuminating lamp under pedestal sends illumination light, by entering institute after welding position reflection
Welding camera lens is stated, and is transmitted to the taking lens, image is formed in the industrial camera.
2. integrated welding according to claim 1 is agreed to play and takes the photograph structure, it is characterised in that the welding camera lens and the shooting
Camera lens is respectively positioned at the two ends of the pedestal.
3. integrated welding according to claim 2 is agreed to play and takes the photograph structure, it is characterised in that collimation cylinder and the pedestal it
Between be connected with collimation microscope group, laser via collimation microscope group by after the collimation cylinder, transmitting to the coated reflection microscope group.
4. integrated welding according to claim 3 is agreed to play and takes the photograph structure, it is characterised in that the welding camera lens includes connecting successively
Laser condensing lens, protection eyeglass, mirror sleeve and the Jing Gai for connecing, the mirror sleeve are connected by counter flange with the pedestal.
5. the integrated welding according to any one of Claims 1-4 is agreed to play and takes the photograph structure, it is characterised in that the coated reflection
Microscope group includes two metallic-membrane plating reflectors, and the reflecting surface of two metallic-membrane plating reflectors is parallel, and with pedestal base angle at 45 °, institute
Madial wall of the one end of metallic-membrane plating reflector respectively with the pedestal is stated to be connected.
6. battery core automatic welding detection means, it is characterised in that including the integration welding described in any one of claim 1 to 5
Shoot structure, conveyer belt, mechanical arm, laser-beam welding machine and the manipulator for removing substandard product；The mechanical arm with
The pedestal connection, is connected with as the illuminating lamp of lighting source on the pedestal；The mechanical arm and the manipulator point
Not Wei Yu the conveyer belt side；The upper end of the collimation cylinder is provided with optical fiber interface, the laser-beam welding machine by optical fiber with
The optical fiber interface connection.
7. battery core automatic welding detection means according to claim 6, it is characterised in that the automatic welding vision is online
Detection means also include industrial computer, display, driver, image pick-up card and alarm, the driver, industrial camera,
Welding camera lens, display, alarm, image pick-up card and the laser-beam welding machine are connected with the industrial computer respectively.
8. the visible detection method of battery core automatic welding detection means, it is characterised in that the detection method includes：
S1, carry out welding to battery core both sides lug respectively by " welding-shoot " order and shoot to obtain both sides tab welding position
Image；
S2, the position data for extracting described image anchor point；
S3, judge described image anchor point position whether with the base set by the qualified cell polar ear of welding as examination criteria
Level puts coincidence, if misaligned, into S4 steps, if overlapping, into S5 steps；
S4, its side-play amount is calculated by the view data for shooting, carry out position correction, and enter S5 steps；
S5, on the basis of described image anchor point, described image is split, obtain the model in each cut zone solder joint melting zone
Enclose, radius and area, average gray value, mean contrast value, position of centre of gravity, horizontal continuity degree, vertical continuous degree, as each point
The characteristic parameter of area's solder joint is cut, into S6 steps；
S6, judge two lugs of battery core described each cut section solder joint characteristic parameter it is whether qualified, if qualified, enter S8 step
Suddenly；
S7, battery core welding are unqualified, and industrial computer is additional not to be conformed to case marking, illustrate and export removal instruction, and manipulator is moved out
Streamline；
S8, Technical innova- tion system MES carry out data statistics, complete a round of visits.
9. the online visible detection method of battery core automatic welding detection means according to claim 8, it is characterised in that sentence
The method for powering off the characteristic parameter of described each cut section solder joint of two lugs of core, if the solder joint melting zone in each region of described image half
Footpath and area, average gray value, mean contrast value, center-of-gravity value, horizontal continuity angle value, vertical continuous angle value are qualified, then should
Tab welding corresponding to battery core is qualified, and only the tab welding of the qualified battery core of both sides tab welding is just qualified, otherwise electricity
Core tab welding is unqualified.For welding underproof battery core, industrial computer adds unqualified explanation and exports removal instruction, machinery
Hand is moved out streamline, and MES carries out data statistics.
10. the visible detection method of battery core automatic welding detection means according to claim 9, it is characterised in that described
Before the step of image of two lugs for obtaining battery core respectively, also include：Before on-line checking, will be by inspection, identification weldering
The both sides tab welding region for engaging the battery core of lattice is individually positioned on welding position on the basis of anchor point, to its welding region
Taken pictures, obtain standard picture and extract its characteristic ginseng value, be stored in database, as the standard for judging.
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| CN113399783A (en) * | 2021-05-26 | 2021-09-17 | 广东理工学院 | Control method and control device for welding machine |
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