CN101670715A - Tire laser marking device and method based on machine vision identity - Google Patents

Tire laser marking device and method based on machine vision identity Download PDF

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Publication number
CN101670715A
CN101670715A CN200910196179A CN200910196179A CN101670715A CN 101670715 A CN101670715 A CN 101670715A CN 200910196179 A CN200910196179 A CN 200910196179A CN 200910196179 A CN200910196179 A CN 200910196179A CN 101670715 A CN101670715 A CN 101670715A
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CN
China
Prior art keywords
laser
tire
marking
workspace
information
Prior art date
Application number
CN200910196179A
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Chinese (zh)
Inventor
王健超
王又良
陈益民
沈可余
姜兆华
潘涌
张伟
张同兴
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上海市激光技术研究所
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Application filed by 上海市激光技术研究所 filed Critical 上海市激光技术研究所
Priority to CN200910196179A priority Critical patent/CN101670715A/en
Publication of CN101670715A publication Critical patent/CN101670715A/en

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Abstract

The invention discloses a tire laser marking device and a method based on a machine vision identity. The device comprises a production line conveyor belt, a clamping and rotating device, an information collection working region, a tire data reader, a mark position reader, an auxiliary lighting device, a smog extracting facility, a laser marking working region, smog filtering and air discharge equipment, a radio frequency CO2 laser, a focusing work bench, a high speed laser scanner, a scanning focus lens, a collimating and beam expanding system, a reflector and a computer system. The information required to be marked is etched on the surface of the tire through the machine vision identity technology and the laser beam high speed scanning and marking technology by utilizing the radio frequency CO2 laser. The invention has the beneficial effects that: through the machine vision identity technology, the marking position is automatically judged according to the different shapes and the arrayed positions of the tires on the production line and an optical beam scanner is guided to be positioned accurately without a special machinery and a manual marking locating device, then a seamless transition with the production line of the tires is achieved and the work efficiency of equipment is further improved.

Description

Tire laser marking apparatus and method based on Machine Vision Recognition
Technical field
The present invention relates to the tire laser marking apparatus and method based on Machine Vision Recognition, particularly a kind of high-performance laser scan type tire marking device and method based on the machine vision image recognition belongs to technical field of laser processing.
Background technology
In recent years, the international automobile manufacturing industry is especially in the production process of doughnut, and American-European countries requires the doughnut product is set up special quality traceability system with professional rules, mandatory quality standard system even with governments and laws form regulation respectively.For example Federal Government traffic and Department of Transportation, Speedway Control Broad and auto industry legistration work group are stipulated, the tire of all tiremaker production must be set up " identity card " system of tire, have and to review and traceability, so that, improve and recall efficient in case find to exist the quality risk problem to review at once.In the past few years, China has become automobile production and has used big country, and auto industry is always to be higher than 20% growth rate high speed development, becomes one of leading industry that the pulling China's economic increases fast.Domestic Automotive Industry must be set up relevant quality tracing standards system equally under the market structure of globalization, thereby exploitation and use the intelligent index carving system based on advanced laser technology can be used for the high speed continuous productive process to become the new development trend of tyre industry.Therefore existing tire laser marking device need manually locate or the machinery location owing to do not adopt the machine vision location technology, has no idea to realize the full-automatic assembly line marking.And existing equipment generally can't be integrated directly into the conveyer belt of traditional tire production high-speed flow line and need it be transformed, and so not only reduced the operational efficiency of equipment, also increased the manufacturing and the operating cost of equipment simultaneously.
Summary of the invention
The present invention for overcome orthodox car tire mark mode cost, flexibility, wearability and false proof aspect and the shortcoming of existing laser index carving tire method, a kind of radio frequency CO that adopts high stability is provided 2The mode of laser instrument, laser beam high-velocity scanning marking has utilized simultaneously that the machine vision image reads, the tire laser marking apparatus and method of identification and location technology.
Technical scheme of the present invention: the tire laser marking device based on Machine Vision Recognition comprises streamline conveyer belt, clamping and whirligig, information gathering workspace, tire data reader, marking location readers, servicing lighting, smog extracting device, laser index carving workspace, smog filtration and exhaust equipment, radio frequency CO 2Laser instrument, focusing workstation, high-rate laser scanner, scanning focused mirror, collimating and beam expanding system, speculum and computer system; On the streamline conveyer belt, install information gathering workspace, laser index carving workspace in order respectively additional, computer system is equipped with at top, described information gathering workspace, inner below is equipped with clamping and whirligig and is connected with the streamline conveyer belt, inner and upper is equipped with tire data reader, marking location readers respectively, near the head of two readers servicing lighting is housed; Described laser index carving workspace inner and upper is equipped with focusing workstation moving up and down, is fixed with high-rate laser scanner and scanning focused mirror on focusing workstation, at the lower zone of scanning focused mirror the smog extracting device is housed; Smog is housed directly over the outside of laser index carving workspace to be filtered and exhaust equipment, radio frequency CO2 laser instrument is placed on the position of top, laser index carving workspace near the right, and laser beam enters the high-rate laser scanner by collimating and beam expanding system, the speculum guiding that is fixed on radio frequency CO2 laser instrument dead ahead.
A kind of tire laser marking method is characterized in that method step is:
The first step obtains the information of the required marking of tire: when the tire of producing enters the information gathering district, by data reader such as CCD camera or electron scanning rifle existing bar code or identification marking on the tire are read in computer system, through Query Database, determine the relevant information and the required marking content of target tire; Second step obtained the marked area of tire: when finishing tire information and reading, by marking location readers such as high performance CCD camera, Machine Vision Recognition software and the standard picture gathering the image information of target tire and pass through in the computer system contrast, thereby determine the deviation of angle, position and the focal length of target tyre type, size and actual required marked area and normal place;
The 3rd step was finished the marking of tire intelligent laser: after finishing information gathering and processing, specification and residing physical location according to the target tire, by conveyer belt tire is transported to the laser index carving workspace, determine marked area by angle and positional information that Machine Vision Recognition software is obtained, the laser beam that laser instrument sent then is through collimating and beam expanding system, enter the high-rate laser scanner behind the speculum, carry out accurately location scanning of high speed by the deflection of light beam, use the laser scanning focus lamp to make the laser beam light beam focus on surface of tyre simultaneously, finish the laser index carving of tire.
The present invention is directed to the defective of existing tire marking arrangement, adopt radio frequency CO 2Laser instrument, utilize new technological means such as Machine Vision Recognition and laser beam high-velocity scanning marking, its advantage is to improve the operating cost of tire marking device, and by laser index carving can so that the tire content more flexibly, have advantages such as wear-resisting, false proof, that data volume is big, can follow the whole life of tire, be the best information marking method of setting up relevant quality tracing standards system.
The present invention be further characterized in that broken through existing laser marking device must be by the problem of mechanical system location, by machine vision IMAQ and treatment technology, under the condition that does not have the mechanical system location, also can accurately locate the mark zone, thereby realize full-automatic marking, improved the operating efficiency and the stability of this laser index carving device.Therefore the present invention can open up new application for laser index carving, reduces operating cost, in all kinds of field of laser processing wide application prospect is arranged.
Description of drawings
Fig. 1 is a tire marking device control flow chart;
Fig. 2 is a tire marking apparatus structure schematic diagram
Fig. 3 is beam scan type laser index carving system light channel structure figure;
Fig. 4 is the marked area schematic diagram;
Fig. 5 is application example figure of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
Shown in Fig. 1 to 5, a kind of tire laser marking device comprises streamline conveyer belt 1, clamping and whirligig 2, information gathering workspace 4, tire data reader 5, marking location readers 6, servicing lighting 7, smog extracting device 8, laser index carving workspace 9, smog filtration and exhaust equipment 10, radio frequency CO 2Laser instrument 11, focusing workstation 12, high-rate laser scanner 13, scanning focused mirror 14, collimating and beam expanding system 15, speculum 16; On described streamline conveyer belt 1, install information gathering workspace 4, laser index carving workspace 9 in order respectively additional, computer system 20 is equipped with at 4 tops, described information gathering workspace, inner below is equipped with clamping and whirligig 2 and is connected with streamline conveyer belt 1, inner and upper is equipped with tire data reader 5, marking location readers 6 respectively, and servicing lighting 7 is housed near the head of two readers; Described laser index carving workspace 9 inner and upper are equipped with focusing workstation 12 moving up and down, are fixed with high-rate laser scanner 13 and scanning focused mirror 14 on focusing workstation 12, at the lower zone of scanning focused mirror 14 smog extracting device 8 are housed; Smog is housed directly over the outside of laser index carving workspace 9 to be filtered and exhaust equipment 10, radio frequency CO2 laser instrument 11 is placed on the position of 9 tops, laser index carving workspace near the right, and laser beam 17 enters high-rate laser scanner 13 by collimating and beam expanding system 15, speculum 16 guiding that are fixed on radio frequency CO2 laser instrument 11 dead aheads.
Described computer system 20, its inside are equipped with image pick-up card and Machine Vision Recognition software; Tire data reader 5 is CCD camera or electron scanning rifle; Marking location readers 6 is the high-performance camera; Smog extracting device 8, smog filter and exhaust equipment 10, have dust, smog screen pack for the metal hose that has exhaust equipment and at air outlet.
Concrete implementation step is as follows:
When tire 3 enters information gathering workspace 4 by 1 drive of streamline conveyer belt, fixedly tire and the rotation earlier of clamping and whirligig 2, finish when tire data reader 5 and to read on the tire after the existing temporary code data 18 clamping and whirligig 2 and stop the rotation, the location readers of marking simultaneously 6 begins to gather image and contrasts by Machine Vision Recognition system and standard picture, when data and image information all gather finish after, can determine the content of required marking by information processing, the zone 19 of marking and angle and the deviation of position and the position of focusing workstation 12 required focusing of standard picture.
When information read dispose after, tire 3 enters laser index carving workspace 9.At first focusing workstation 12 moves up and down, and determines the best effort distance, and secondly angle and the positional information that is obtained by the Machine Vision Recognition system determined marked area, then radio frequency CO 2Inject high-rate laser scanner 13 behind the laser beam 17 process collimating and beam expanding systems 15 that laser instrument 11 is sent, the speculum 16, carry out accurately location scanning of high speed by the deflection of light beam, use laser scanning focus lamp 14 to make the laser beam light beam focus on surface of tyre simultaneously, finish the laser index carving of tire.Smog in the marking process is filtered by smog extracting device 8, smog and exhaust equipment is discharged the working region after treatment.
The present invention adopts radio frequency CO2 laser instrument, utilizes Machine Vision Recognition Technology and laser beam high-velocity scanning marking technology, can be with the high speed information of required mark, be etched in the surface of all size tire accurately.Pass through laser index carving, can be with the spcial character section of coding such as BAR code, the DOT code of tire, Mold code and other various important informations (as the tire brand, produce sequence number, factory factory site, date of manufacture, factory's code name etc.) with the ad-hoc location (as inner ring nearly wheel hub, as shown in Figure 5) of the permanent marking of laser at tire.These tire identification marking tool identity uniqueness, corresponding complete database information for future reference, on the one hand offer the consumer, be applied in the multipaths automatic managements such as production management, store management in enterprise as the enterprise information management code on the other hand as quality tracing feature coding.Compare with the prior art of existing domestic and international same area, the method that the present invention has used the machine vision image to read, discern and locate, can according to the difformity of tire on the automatic production line and arrangement position be judged the marking position automatically and guide optical beam scanner accurately to locate, need not special machinery or artificial marking positioner.Laser index carving system effectively can be joined seamlessly on the conveyer belt of traditional tire production high-speed flow line by this method, can improve the speed of laser index carving and the improvement cost of minimizing equipment.Therefore this feature has broken through the problem that other laser tire index carving systems can only lean on mechanical device to locate, only need and handle and just can accurately locate the mark zone by IMAQ, can realize full-automatic marking, improve the operating efficiency and the stability of this laser index carving device.By above-mentioned feature, the present invention can improve the quality and the efficient of tire information marking, has characteristics such as wear-resisting, false proof, information content, flexibility height, and satisfying fully is the requirement of doughnut product quality traceability system.

Claims (2)

1. based on the tire laser marking device of Machine Vision Recognition, be characterised in that it comprises streamline conveyer belt (1), clamping and whirligig (2), information gathering workspace (4), tire data reader (5), marking location readers (6), servicing lighting (7), smog extracting device (8), laser index carving workspace (9), smog filtration and exhaust equipment (10), radio frequency CO 2Laser instrument (11), focusing workstation (12), high-rate laser scanner (13), scanning focused mirror (14), collimating and beam expanding system (15) and speculum (16); On described streamline conveyer belt (1), install information gathering workspace (4), laser index carving workspace (9) in order respectively additional, computer system (20) is equipped with at top, described information gathering workspace (4), inner below is equipped with clamping and whirligig (2) and is connected with streamline conveyer belt (1), inner and upper is equipped with tire data reader (5), marking location readers (6) respectively, and servicing lighting (7) is housed near the head of two readers; Described laser index carving workspace (9) inner and upper is equipped with focusing workstation moving up and down (12), on focusing workstation (12), be fixed with high-rate laser scanner (13) and scanning focused mirror (14), smog extracting device (8) be housed at the lower zone of scanning focused mirror (14); Smog is housed directly over the outside of laser index carving workspace (9) to be filtered and exhaust equipment (10), radio frequency CO2 laser instrument (11) is placed on the position of top, laser index carving workspace (9) near the right, and laser beam (17) enters high-rate laser scanner (13) by collimating and beam expanding system (15), speculum (16) guiding that is fixed on radio frequency CO2 laser instrument (11) dead ahead.
2. an application rights requires the tire laser marking method of 1 described device, it is characterized in that method step is:
The first step obtains the information of the required marking of tire: when the tire of producing (3) enters information gathering workspace (4), as CCD camera or electron scanning rifle existing bar code or identification marking on the tire are read in computer system (20) by tire data reader (5), through Query Database, determine the relevant information and the required marking content of target tire;
Second step obtained the marked area of tire: when finishing tire information and reading, by marking location readers (6) as the high performance CCD camera, Machine Vision Recognition software and the standard picture gathering the image information of target tire and pass through in the computer system (20) contrast, thereby determine the deviation of angle, position and the focal length of target tyre type, size and actual required marked area and normal place;
The 3rd step was finished the marking of tire intelligent laser: after finishing information gathering and processing, specification and residing physical location according to the target tire, by streamline conveyer belt (1) tire (3) is transported to laser index carving workspace (9), determine marked area by angle and positional information that Machine Vision Recognition software is obtained, then radio frequency CO 2Enter high-rate laser scanner (13) behind the laser beam process collimating and beam expanding system (15) that laser instrument (11) is sent, the speculum (16), carry out accurately location scanning of high speed by the deflection of light beam, use scanning focused mirror to make the laser beam light beam focus on surface of tyre simultaneously, finish the laser index carving of tire.
CN200910196179A 2009-09-23 2009-09-23 Tire laser marking device and method based on machine vision identity CN101670715A (en)

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Application Number Priority Date Filing Date Title
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102310658A (en) * 2010-06-29 2012-01-11 吴华 Marker for integrated circuit packaged chip
CN102636492A (en) * 2012-04-18 2012-08-15 湖南大学 High-speed visual on-line detection equipment for surface defects of steel rails
CN103302997A (en) * 2012-03-14 2013-09-18 上海保隆汽车科技股份有限公司 Inflating valve and mark stamping and marking method of inflating valve
CN103395297A (en) * 2013-07-23 2013-11-20 武汉瑞丰光电技术有限公司 Full-automatic air valve marking machine
CN104191828A (en) * 2014-08-28 2014-12-10 合肥海闻自动化设备有限公司 Movable platform structure for digital tire printer
CN104589804A (en) * 2015-02-02 2015-05-06 宁波卡速视自动化科技有限公司 Marking method of universal automatic laser marking machine
CN104749179A (en) * 2015-02-02 2015-07-01 宁波卡速视自动化科技有限公司 Three-way catalyst honeycomb ceramic permeability detection and laser marking method
CN104786669A (en) * 2015-04-07 2015-07-22 无锡三页书国际贸易有限公司 Device for manufacturing colored and dazzling tire
CN106295936A (en) * 2015-05-29 2017-01-04 深圳镭博万科技有限公司 Wheel hub type identification device and wheel hub mark system for tracing and managing
CN106695126A (en) * 2015-07-21 2017-05-24 昆山润昆自动化科技有限公司 Tire bar code reading and engraving integrated machine
CN106937047A (en) * 2017-03-08 2017-07-07 合肥易同得智能科技有限公司 The self adaptation focusing visual identity method of symbolic feature, system and equipment
CN107009023A (en) * 2017-05-27 2017-08-04 深圳凯世光研股份有限公司 A kind of focus control and its focus adjustment method for adjusting laser focal
CN108391847A (en) * 2018-03-16 2018-08-14 山西大学 A kind of cigarette laser marking system and method based on image procossing
CN109286752A (en) * 2018-09-28 2019-01-29 东莞华贝电子科技有限公司 Vision inspection apparatus and automatic focusing method

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102310658A (en) * 2010-06-29 2012-01-11 吴华 Marker for integrated circuit packaged chip
CN103302997A (en) * 2012-03-14 2013-09-18 上海保隆汽车科技股份有限公司 Inflating valve and mark stamping and marking method of inflating valve
CN102636492A (en) * 2012-04-18 2012-08-15 湖南大学 High-speed visual on-line detection equipment for surface defects of steel rails
CN103395297A (en) * 2013-07-23 2013-11-20 武汉瑞丰光电技术有限公司 Full-automatic air valve marking machine
CN103395297B (en) * 2013-07-23 2016-04-27 武汉瑞丰光电技术有限公司 Full automatic air valve marking machine
CN104191828B (en) * 2014-08-28 2017-03-08 合肥海闻自动化设备有限公司 A kind of moveable platform structure for tire digital printer
CN104191828A (en) * 2014-08-28 2014-12-10 合肥海闻自动化设备有限公司 Movable platform structure for digital tire printer
CN104749179B (en) * 2015-02-02 2018-05-18 宁波兴德磁业科技股份有限公司 A kind of penetrating detection of ternary catalyzing unit ceramic honey comb and laser marking method
CN104749179A (en) * 2015-02-02 2015-07-01 宁波卡速视自动化科技有限公司 Three-way catalyst honeycomb ceramic permeability detection and laser marking method
CN104589804A (en) * 2015-02-02 2015-05-06 宁波卡速视自动化科技有限公司 Marking method of universal automatic laser marking machine
CN104786669A (en) * 2015-04-07 2015-07-22 无锡三页书国际贸易有限公司 Device for manufacturing colored and dazzling tire
CN104786669B (en) * 2015-04-07 2016-08-24 无锡三页书国际贸易有限公司 A kind of device dazzling driving wheel tire for manufacturing colour
CN106295936A (en) * 2015-05-29 2017-01-04 深圳镭博万科技有限公司 Wheel hub type identification device and wheel hub mark system for tracing and managing
CN106695126A (en) * 2015-07-21 2017-05-24 昆山润昆自动化科技有限公司 Tire bar code reading and engraving integrated machine
CN106937047A (en) * 2017-03-08 2017-07-07 合肥易同得智能科技有限公司 The self adaptation focusing visual identity method of symbolic feature, system and equipment
CN106937047B (en) * 2017-03-08 2019-08-09 苏州易瑞得电子科技有限公司 Adaptive focusing visual identity method, system and the equipment of symbolic feature
CN107009023A (en) * 2017-05-27 2017-08-04 深圳凯世光研股份有限公司 A kind of focus control and its focus adjustment method for adjusting laser focal
CN107009023B (en) * 2017-05-27 2019-02-15 深圳凯世光研股份有限公司 A kind of focus control and its focus adjustment method adjusting laser focal
CN108391847A (en) * 2018-03-16 2018-08-14 山西大学 A kind of cigarette laser marking system and method based on image procossing
CN109286752A (en) * 2018-09-28 2019-01-29 东莞华贝电子科技有限公司 Vision inspection apparatus and automatic focusing method

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Open date: 20100317