CN104816548B - One kind modeling pipe laser marking vision detection system - Google Patents
One kind modeling pipe laser marking vision detection system Download PDFInfo
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- CN104816548B CN104816548B CN201510244141.2A CN201510244141A CN104816548B CN 104816548 B CN104816548 B CN 104816548B CN 201510244141 A CN201510244141 A CN 201510244141A CN 104816548 B CN104816548 B CN 104816548B
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Abstract
Pipe laser marking vision detection system is moulded the invention discloses one kind.Wherein, the system includes mainframe, main conveying device, control platform, auxiliary conveying appliance and laser mark printing device, and bad device for eliminating and retracting device.Main conveying device includes support transfer ear frame, main conveyor belt and main motor, and in mark sensor and vision sensor.Laser mark printing device includes Extension support, mark positioner, and in laser main frame.Bad device for eliminating is included in main conveyor belt side provided with framework corresponding with vision sensor position and the electric rotating machine being provided with framework, and provided with the plate washer being connected with electric rotating machine on framework.The present invention has using flexible, automatic marking and production efficiency height, and the effect saved labour turnover.
Description
Technical field
The invention belongs to product marking equipment, more particularly to a kind of modeling pipe laser marking vision detection system.
Background technology
At present, the modeling pipe marking equipment that market occurs is main by the conveyer belt on workbench, workbench and in conveying
Control platform with side, and the upper laser machine composition in conveyer belt side.During mark, the product for treating mark is positioned over work
On the right of platform, staff is placed into the product on the right in the die cavity being provided with laser machine afterwards, starts laser machine button and enters
Row mark.The product after mark is completed, by manually carrying out naked eyes recognition detection, non-defective unit places the workbench on the left side, defective products
Place in defective products empty van, wait next step processing.Because the marking equipment job ticket one of said structure is, it is necessary to according to different
The corresponding die cavity of products configuration.In addition, the detection for defective products is mainly manually mode and detected, longevity of service
Long afterwards, naked eyes identification defective products easily produces visual fatigue, and being easily caused erroneous judgement may.Again due to the whole flow process of mark operation
Mainly it is manually performed, adds the cost of labor of enterprise's production;Meanwhile, the production efficiency of mark is also very low.
The content of the invention
In view of the above problems, it is high using flexible, automatic marking and production efficiency it is an object of the invention to provide one kind, and
The modeling pipe laser marking vision detection system saved labour turnover.
To achieve the above object, a kind of modeling pipe laser marking support that the present invention is provided turns vision detection system, wherein, should
System include mainframe, be provided with mainframe main conveying device, be provided with main conveying device side control platform, in master
Auxiliary main conveying device and laser mark printing device that conveying device opposite side is provided with, and be provided with not in laser mark printing device side
The retracting device that good device for eliminating and side corresponding with bad device for eliminating position are provided with.Main conveying device is included in mainframe
The support transfer ear frame being provided with, the main conveyor belt being provided with support transfer ear frame and the main motor being provided with main conveyor belt, and
The mark sensor and vision sensor being respectively equipped with main conveyor belt.Laser mark printing device is included in and mark sensor position
Put corresponding mainframe and be provided with the mark positioner being provided with the vertically extending Extension support of mainframe, on Extension support, and
The laser head and connection laser head that are provided with mark positioner and the laser main frame being installed on mainframe.It is bad to reject dress
Put and be included in main conveyor belt side provided with framework corresponding with vision sensor position and the electric rotating being provided with framework
Machine, and provided with the plate washer being connected with electric rotating machine on framework;Auxiliary main conveying device is included in the branch that main conveyor belt is provided with
Frame, the fixed seat being provided with support, on support provided with the first screw rod with handwheel and synchronous belt and in synchronous belt two
Auxiliary motor and encoder that end is respectively equipped with.Thus, the effect of auxiliary main conveying device is the shape according to its mark product
Size and mark location do relative height regulation.The effect of above-mentioned encoder is that the velocity feedback of synchronous belt is given into control
Platform processed, does corresponding speed to the speed of synchronous belt or main conveyor belt afterwards and adjusts, and makes synchronous belt or master defeated
The speed of band is sent to reach synchronization, it is therefore an objective to which the product for treating mark at the uniform velocity advances mark in mark region.In addition, the first screw rod
Effect is can to control the height above and below synchronous belt.For example, toward the handwheel on the screw rod of right rotation first, synchronous belt will be to
Lower movement, then can be reduced the height of synchronous belt and main conveyor belt.It is synchronous when rotating the handwheel on the first screw rod toward the left side
Belt will be moved up, and add the height of synchronous belt and main conveyor belt, and this regulation is the shape according to its mark product
Size and mark location do relative height regulation, reach preferable mark effect state.Mark positioner is included in extension
Fixed plate that frame is provided with, the line slideway being provided with fixed plate, the servomotor being provided with fixed plate, in line slideway
Provided be connected with servomotor and ball screw straight down, be provided with line slideway crane, on crane
Laser fixed plate provided with fixed laser head, the second spiral shell on crane provided with being connected with laser fixed plate and with handwheel
Bar, and it is respectively equipped with upper limit sensor and lower limited sensor on the crane positioned at laser fixed plate both sides.Thus, laser head
What the handwheel on logical second screw rod of control of fore-and-aft direction was realized.For example, the handwheel on the second screw rod toward the right rotate when, laser
Head is moved forward;Conversely, handwheel on the second screw rod toward the left side rotate when, laser head is moved rearwards by, and focal length is high above and below laser head
Degree drives ball screw by control platform, and the rotating of control ball screw and rotating speed and the number of turns are controlled on ball screw is
Rise or toward decline, the speed risen or fallen and the position reached.The location point of above-mentioned upper limit sensor is control laser head
The extreme position of lifting height;The location point of above-mentioned lower limited sensor is the extreme position for controlling laser head falling head.Laser
The activity adjustment scope of the upper-lower height of head is between the installation site point of lower limited sensor installation site point to upper limit sensor.
In some embodiments, line slideway is rotated relative to laser fixed plate.
In some embodiments, shooting support is provided with laser fixed plate and camera is provided with shooting support.
In some embodiments, control platform be included in platform panel that the mainframe of main conveyor belt side is provided with,
The controller being equipped with platform panel, and the relay indicating light being connected with controller.Mark sensor and vision sensor point
It is not connected with controller.
In some embodiments, retracting device is included in the main conveyor belt material output end of bad device for eliminating side
The material-conveying belt being provided with and the collection vessel provided with material output end on correspondence main conveyor belt on material-conveying belt, and in main conveyor belt
The sensor for countering that is provided with of material output end.
The beneficial effects of the invention are as follows with using flexibly, automatic marking and production efficiency it is high, and save labour turnover
Effect.Because main conveying device includes support transfer ear frame, main conveyor belt and main motor, and mark sensor and visual sensing
Device.During mark, the angle position of laser heddpiece and main conveyor belt strap surface according to the location point of mark and mark face, can be adjusted
Carry out mark.In addition, auxiliary main conveying device be included in the support that main conveyor belt is provided with, the fixed seat being provided with support,
Provided with the first screw rod with handwheel and synchronous belt and the auxiliary motor and volume that are respectively equipped with synchronous belt both ends on support
Code device.During mark, do not limited, filled according to the auxiliary conveyer belt of the use of different product designs with main conveying by single mark product
Put and realize synchronous transport.Realize and use flexible purpose.The mark positioner included again due to laser mark printing device by
Fixed plate that Extension support is provided with, the line slideway being provided with fixed plate, the servomotor being provided with fixed plate, in straight line
Guide rail be provided be connected with servomotor and ball screw straight down, be provided with line slideway crane, lifting
Laser fixed plate of the frame provided with fixed laser head, on crane provided be connected with laser fixed plate and carries the second of handwheel
Screw rod, and it is respectively equipped with the crane positioned at laser fixed plate both sides upper limit sensor and lower limited sensor composition.Mark
Positioner can be by way of line slideway be rotated relative to laser fixed plate, the angle of regulation laser head inwardly and outwardly
Degree;Under upper limit sensor and lower limited sensor mating reaction the laser on ball screw can be driven to consolidate by servomotor
Fixed board is lifted, and adjusts the height that laser head is downward or lifts downwards;The handwheel that can be carried by the second screw rod, adjusts laser
The distance of head forward or backward.In addition, utilizing vision sensor and defective products device for eliminating phase with being connected controller connection
Mutually coordinate, can be by after to the mark through marking device, defective products not on a predetermined position is automatic to discharge at framework.It is whole
Individual mark process, can not only be automatically performed, and reduce the probability of artificial naked eyes identification erroneous judgement, realize the efficiency of mark
Also it is very high, also save cost of labor.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is the configuration schematic diagram that Fig. 1 removes retracting device;
Fig. 3 is the structural representation of laser mark printing device;
Fig. 4 is the structural representation of auxiliary main conveying device;
Fig. 5 is the structural representation of bad device for eliminating;
Fig. 6 is the structural representation of main conveying device.
Embodiment
Invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figures 1 to 6, a kind of modeling pipe laser marking support turns vision detection system, including mainframe 01, in mainframe
It is 01 main conveying device 02 being provided with, the control platform 03 being provided with the side of main conveying device 02, another in main conveying device 02
Auxiliary main conveying device 04 and laser mark printing device 05 that side is provided with, and the bad rejecting being provided with the side of laser mark printing device 05
The retracting device 07 that device 06 and side corresponding with the bad position of device for eliminating 06 are provided with.Main conveying device 02 is included in main frame
Support transfer ear frame 21 that frame 01 is provided with, the main conveyor belt 22 being provided with support transfer ear frame 21 and it is provided with main conveyor belt 22
Main motor 23, and the mark sensor 24 and vision sensor 25 being respectively equipped with main conveyor belt 22.Laser mark printing device
05 be included in mainframe 01 corresponding with the position of mark sensor 24 be provided with the vertically extending Extension support of mainframe 01 51,
The mark positioner 52 that Extension support 51 is provided with, and the laser head 53 being provided with mark positioner 52 and connection laser head
53 and the laser main frame 54 that is installed on mainframe 01.Bad device for eliminating 06 be included in the side of main conveyor belt 22 be provided with regarding
Feel the corresponding framework 61 in the position of sensor 25 and the electric rotating machine 62 being provided with framework 61, and be provided with and rotation on framework 61
The plate washer 63 that rotating motor 62 is connected.
Auxiliary main conveying device 04 is included in the support 41 that main conveyor belt 22 is provided with, the fixed seat being provided with support 41
42nd, the first screw rod 43 with handwheel and synchronous belt 44 are provided with support 41 and is respectively equipped with the both ends of synchronous belt 44
Auxiliary motor 45 and encoder 46.The effect of auxiliary main conveying device 04 is according to the shape size of its mark product and mark position
Put and do relative height regulation.The effect of above-mentioned encoder 46 is that the velocity feedback of synchronous belt 44 is given into control platform
03, corresponding speed is done to the speed of synchronous belt 44 or main conveyor belt 22 afterwards and is adjusted, makes synchronous belt 44 or main
The speed of conveyer belt 22 reaches synchronization, it is therefore an objective to which the product for treating mark at the uniform velocity advances mark in mark region.In addition, the first spiral shell
The effect of bar 43 is the height that can control synchronous belt about 44.For example, it is synchronous toward the handwheel on the first screw rod of right rotation 43
Belt 44 will be moved down, then can be reduced the height of synchronous belt 44 and main conveyor belt 22.The first spiral shell is rotated toward the left side
During handwheel on bar 43, synchronous belt 44 will be moved up, and add the height of synchronous belt 44 and main conveyor belt 22, this tune
Section is that relative height regulation is done according to the shape size and mark location of its mark product, reaches preferable mark effect shape
State.Mark positioner 52 be included in the fixed plate 55 that Extension support 51 is provided with, the line slideway 56 being provided with the fixture plate 55,
The servomotor 57 that is provided with the fixture plate 55, on line slideway 56 provided with being connected with servomotor 57 and rolling straight down
Ballscrew 58, the crane 59 being provided with line slideway 56, fixed provided with the laser of fixed laser first 53 on crane 59
Plate 510, the second screw rod 511 on crane 59 provided with being connected with laser fixed plate 510 and with handwheel, and positioned at laser
Upper limit sensor 512 and lower limited sensor 513 are respectively equipped with the crane 59 of the both sides of fixed plate 510.The front and back of laser head 53
To control logical second screw rod 511 on handwheel realize.For example, the handwheel on the second screw rod 511 toward the right rotate when, laser
First 53 move forward;Conversely, handwheel on the second screw rod 511 toward the left side rotate when, laser head 53 is moved rearwards by, on laser head 53
Lower focal length height drives ball screw 58 by control platform 03, and the rotating and rotating speed and the number of turns for controlling ball screw 58 are controlled
Ball screw 58 processed is risen or toward decline, the speed risen or fallen and the position reached.Above-mentioned upper limit sensor 512
Location point is the extreme position for controlling the lifting height of laser head 53;The location point of above-mentioned lower limited sensor 513 is control laser head
The extreme position of 53 falling heads.The activity adjustment scope of the upper-lower height of laser head 53 is in the installation site of lower limited sensor 513
Point is between the installation site point of upper limit sensor 512.Line slideway 56 is rotated relative to laser fixed plate 510.Laser is fixed
Shooting support 514 is provided with plate 510 and camera 515 is provided with shooting support 514.Control platform 03 is included in main conveying
Platform panel 31 that mainframe 01 with 22 sides is provided with, the controller 32 being equipped with platform panel 31, and and controller
32 relay indicating light 34.Mark sensor 24 and vision sensor 25 are connected with controller 32 respectively.Retracting device 07 includes
Material-conveying belt 71 and be provided with material-conveying belt 71 that the material output end of main conveyor belt 22 in the bad side of device for eliminating 06 is provided with
The collection vessel 72 of material output end on correspondence main conveyor belt 22, and be provided with the material output end of main conveyor belt 22
Sensor for countering 73.
Operation principle is as follows:
In the feeding mouth position of main conveyor belt 22, mark product, the right-to-left of main conveyor belt 22 are placed according to job requirements
Advance.When product passes through mark sensor 24, triggering laser machine carries out product mark.After the completion of mark, product continues from right
Advance to the left, target product to be accomplished fluently passes through vision sensor 25, triggering camera 515 carries out the identification inspection of product mark location
Survey.Do not start as fruit product meets the baffle plate in the requirement of mark, device for eliminating, product is moved on.Passed by product counting
Sensor 73, controller 32 will be counted, and product constantly advances, and enter collection vessel 72 (can be carton) one by one
Interior, when the product of collection vessel 72 reaches specified quantity, the sending signal of controller 32 starts material-conveying belt 71, and carton is carried out afterwards
Conveying and encapsulation.Then, next collection vessel 72 reaches the position specified, and material-conveying belt 71 stops conveying afterwards.Such as fruit product
The baffle plate carried out in visual identity detection NG, bad device for eliminating 06 is opened, and defective products is fallen into the case for collecting defective products.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, various modifications and improvements can be made, these belong to the protection domain of invention.
Claims (5)
1. one kind modeling pipe laser marking detecting system, it is characterised in that the master that the system includes mainframe, is provided with mainframe
Conveying device, the control platform being provided with main conveying device side, the main conveying dress of auxiliary being provided with main conveying device opposite side
Put and laser mark printing device, and the bad device for eliminating that is provided with laser mark printing device side and with bad device for eliminating position phase
The retracting device that the side answered is provided with;
Described main conveying device is included in the support transfer ear frame that mainframe is provided with, the main conveying being provided with support transfer ear frame
Band and the main motor being provided with main conveyor belt, and the mark sensor and vision sensor being respectively equipped with main conveyor belt;
Described laser mark printing device is included in mainframe corresponding with mark sensing station and prolonged provided with vertical with mainframe
The Extension support stretched, the mark positioner being provided with Extension support, and the laser head being provided with mark positioner and connection
Laser head and the laser main frame being installed on mainframe;
Described bad device for eliminating be included in main conveyor belt side provided with framework corresponding with vision sensor position and
The electric rotating machine being provided with of framework, and provided with the plate washer being connected with electric rotating machine on framework;
Described auxiliary main conveying device is included in the support that main conveyor belt is provided with, the fixed seat being provided with support, in branch
Frame is provided with the first screw rod with handwheel and synchronous belt and the auxiliary motor and coding that are respectively equipped with synchronous belt both ends
Device;
Described mark positioner be included in the fixed plate that Extension support is provided with, the line slideway being provided with fixed plate,
Servomotor that fixed plate is provided with, on line slideway provided be connected with servomotor and ball screw straight down,
Crane that line slideway is provided with, on crane the laser fixed plate provided with fixed laser head, be provided with crane with
Laser fixed plate is connected and the second screw rod with handwheel, and is respectively equipped with the crane positioned at laser fixed plate both sides
Limit sensor and lower limited sensor.
2. a kind of modeling pipe laser marking detecting system according to claim 1, it is characterised in that described line slideway phase
Rotated for laser fixed plate.
3. a kind of modeling pipe laser marking detecting system according to claim 1, it is characterised in that described laser fixed plate
On be provided with shooting support and shooting support on be provided with camera.
4. a kind of modeling pipe laser marking detecting system according to claim 1, it is characterised in that described control platform bag
Include the platform panel being provided with the mainframe of main conveyor belt side, the controller being equipped with platform panel, and and controller
The relay indicating light of connection;Described mark sensor and vision sensor are connected with controller respectively.
5. a kind of modeling pipe laser marking detecting system according to claim 1, it is characterised in that described retracting device is included in
Material-conveying belt and the main conveying of correspondence is provided with material-conveying belt that the main conveyor belt material output end of bad device for eliminating side is provided with
Take the collection vessel of material output end, and the sensor for countering being provided with the material output end of main conveyor belt.
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CN201510244141.2A CN104816548B (en) | 2015-05-13 | 2015-05-13 | One kind modeling pipe laser marking vision detection system |
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Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105835532A (en) * | 2016-03-29 | 2016-08-10 | 苏州恩欧西智能科技有限公司 | Double-sided laser marking device |
CN105856858A (en) * | 2016-06-01 | 2016-08-17 | 河北大唐激光科技有限公司 | Laser marking machine |
CN106042661A (en) * | 2016-06-29 | 2016-10-26 | 广州市铭钰标识科技有限公司 | Visual detection device for bottle cap laser marking |
CN106914431A (en) * | 2017-03-30 | 2017-07-04 | 苏州华科精密模具有限公司 | A kind of detection device for eliminating of plainly-packed motor moulding |
CN107442944A (en) * | 2017-07-21 | 2017-12-08 | 四川业峰塑业有限公司 | A kind of flexible laser printer |
CN108637487A (en) * | 2018-06-26 | 2018-10-12 | 佛山市金泉科技有限公司 | A kind of pathological specimen embedding box laser marker |
CN108749436A (en) * | 2018-07-27 | 2018-11-06 | 浙江今跃机械科技开发有限公司 | A kind of engraving equipment of metalwork |
CN112571984B (en) * | 2020-11-11 | 2022-07-05 | 山东振挺精工活塞有限公司 | Piston pin marking production line |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013226746A (en) * | 2012-04-26 | 2013-11-07 | Canon Inc | Light beam scanning device, method of controlling the device, control program, and image forming apparatus |
CN103009825B (en) * | 2012-11-23 | 2015-12-16 | 新昌县捷奥激光制品有限公司 | Capsule detection laser mark all-in-one |
CN203037718U (en) * | 2012-12-13 | 2013-07-03 | 东莞逸飞激光设备有限公司 | Cell-marking and voltage-detecting equipment |
JP5905045B2 (en) * | 2013-03-29 | 2016-04-20 | キヤノン株式会社 | Image forming apparatus |
CN103465635B (en) * | 2013-08-19 | 2015-06-03 | 武汉大华激光科技有限公司 | Full automatic laser marking bayonet one-body machine for detonator manufacturing |
CN204095306U (en) * | 2014-07-10 | 2015-01-14 | 公安部交通管理科学研究所 | Multiple step format number plate automatic laser writes comments on a document system |
CN204774108U (en) * | 2015-05-13 | 2015-11-18 | 广州市铭钰标识科技有限公司 | Mould a tub laser marking vision detection system |
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Address after: 510000 J1, J2, 8 Tianfeng Road, science and Technology City, Guangzhou hi tech Industrial Development Zone, Guangdong Patentee after: Guangdong Ming Yu Polytron Technologies Inc Address before: 510000 G09 2, 232 Guangzhou Road, science and Technology Development Zone, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee before: Guangzhou inscription treasure mark Science and Technology Ltd. |