CN102519372A - Laser thickness measuring apparatus of lithium battery electrode and working method thereof - Google Patents

Laser thickness measuring apparatus of lithium battery electrode and working method thereof Download PDF

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Publication number
CN102519372A
CN102519372A CN2011104378237A CN201110437823A CN102519372A CN 102519372 A CN102519372 A CN 102519372A CN 2011104378237 A CN2011104378237 A CN 2011104378237A CN 201110437823 A CN201110437823 A CN 201110437823A CN 102519372 A CN102519372 A CN 102519372A
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sheet material
laser sensor
laser
tested sheet
tested
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CN2011104378237A
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朱锡芳
杨辉
许清泉
徐安成
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Changzhou Institute of Technology
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Changzhou Institute of Technology
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Abstract

The invention relates to a laser thickness measuring apparatus and a working method thereof. The apparatus comprises an upper laser sensor and a lower laser sensor, wherein the upper laser sensor and the lower laser sensor are arranged at two ends of a C-shaped rack mechanism in an opposite arrangement mode; the C-shaped rack mechanism is arranged on a screw transmission mechanism; an industrial control computer uses an encode to control motions of the screw transmission mechanism, thereby controlling the laser sensors to make back-and-forth movements; and the thickness and the surface flatness of a measured sheet material that passes through space between the upper laser sensor and the lower laser sensor are detected. Transmission of the measured sheet material is realized by use a transmission device to carry out transmission along a length direction; and the motion direction of the measured sheet material is perpendicular to output laser beams of the laser sensors. According to back-and-forth movement tracks of the laser beams on the upper surface and the lower surface of the measured sheet material, a scanning range of the measured sheet material surface is enlarged and detection is carried out on the flatness of the whole surface of the sheet material; and moreover, measurement precision can be controlled by using a drive circuit that is connected with the industrial control computer to control the screw transmission mechanism to drive back-and-forth speeds of the laser sensors; and the faster the back-and-forth speeds are, the higher the measurement precision is.

Description

The thickness measurement with laser device and the method for work thereof of electrode of lithium cell
Technical field
The present invention relates to the technical field of sheet metal thickness laser detection, relate in particular to a kind of thickness measurement with laser device and method of work thereof.
Background technology
In the board materials production process, extremely important to the detection of sheet metal thickness, can directly have influence on subsequent handling.
Along with the continuous development of thickness measurement technology, for the measurement of sheet metal thickness a lot of methods appear, like laser transmission method, ultrasonic measurement etc.Different measuring methods has different techniques characteristics and range of application.Nowadays, non-contact measurements such as thickness measurement with laser have been used to the thickness measure of sheet material, and it is contactless that laser measurement method belongs to, can on-line measurement, and real-time performance is good.
But, because laser sensor is actionless often in when work, drives tested sheet material through guide roller and pass laser sensor, can only this plate surface dot thickness of fixed test, judge whether it is qualified; But can't test situation such as whole object surfaces thickness, flatness, certain dot thickness is qualified on the omission surface easily, but the rough defective sheet material in other positions.
Chinese patent document CN1800776A discloses a kind of thickness measurement with laser device, and during its work, tested sheet material passes between the laser sensor.This scheme, same existence can't detect the full surface smoothness situation of tested sheet material, easily the problem of the defective sheet material of omission.
Summary of the invention
The technical matters that the present invention will solve provides a kind of coverage rate that can enlarge tested sheet metal thickness scanning, and thickness measurement with laser device and method of work thereof that tested sheet material integral smoothness is measured.
For solving the problems of the technologies described above; The present invention is through a kind of thickness measurement with laser device; Comprise the upper and lower laser sensor that is oppositely arranged of being located at C type frame mechanism two ends; Said C type frame mechanism be located at one be used to control its straight-line displacement lead screw transmission mechanism, the driving circuit of lead screw transmission mechanism links to each other with an industrial computer, the scrambler of rotation amount that industrial computer and is used for detecting the screw mandrel of said lead screw transmission mechanism links to each other; Industrial computer is controlled the action of said lead screw transmission mechanism through scrambler, makes back and forth movement to control said laser sensor, and detects from the thickness and the surface smoothness of the tested sheet material that passes between the described upper and lower laser sensor; The tested sheet material of said transmission carries out transmitting by length direction through a gearing, and the direction of motion of this tested sheet material is perpendicular to the outgoing laser beam of said laser sensor.According to the back and forth movement track of laser beam at tested sheet material upper and lower surfaces; Enlarge the sweep limit of tested plate surface; Flatness to the full surface of sheet material detects; And the driving circuit that measuring accuracy can basis links to each other with industrial computer control lead screw transmission mechanism drives the shuttle speed of laser sensor and controls, and its shuttle speed is high more, and measuring accuracy is just high more.
Further; For the laser beam that tested sheet material can be sent through laser sensor stably, said gearing contains: place the said C type frame mechanism left and right sides and drive a pair of parallel guide roller that tested sheet material passes said upper and lower laser sensor.
Further; In order to make the transmission that remains a constant speed of tested sheet material; Said gearing also comprises: the rolling-up mechanism that is used for rolling sheet material; And be provided with a tension pick-up in the described rolling-up mechanism, be used for detecting sheet material and controlled the angular velocity of rolling-up mechanism Scroll rotation, make the transmission that remains a constant speed of tested sheet material by the thickness after the rolling.
Further, can return and leave measured material fully in order to make laser sensor, be convenient to the automatic calibrate of maintenance of machine and system, the distance that said C type frame mechanism moves horizontally is not more than the span of C type frame mechanism.
Further, tested sheet material can be electrode of lithium cell film or battery pole piece.
The method of work of above-mentioned laser measuring device for measuring may further comprise the steps:
1., the spacing of the fixed upper and lower laser sensor of advanced rower, promptly the spacing of two laser sensors equals the distance of the upper surface of the tested sheet material of standard to the lower surface of the distance of last laser sensor, the tested sheet material of standard to laser sensor down, the thickness sum of the tested sheet material of standard;
2., after the record nominal data; Control C type frame mechanism is moved horizontally to the working position; With described laser sensor the dual-side edge of tested sheet material is measured, made the scope of back and forth movement at said tested sheet material Width to confirm described lead screw transmission mechanism driving laser sensor;
3., lead screw transmission mechanism drives described laser sensor and makes back and forth movement; Gearing drives tested sheet material and between said upper and lower laser sensor, passes; The laser beam of upper and lower laser sensor is done scanning at the upper and lower surfaces of tested sheet material and is detected; Said industrial computer is handled the data of the tested sheet material that laser sensor collects, and obtains thickness data, surfacing degrees of data.
Further, in order to improve the precision that detects tested sheet material surface smoothness, improve lead screw transmission mechanism through industrial computer and drive the speed that described laser sensor is made back and forth movement.
Further; In order to divide the defective length areas of tested sheet material; Driving tested sheet material through the control of the tension pick-up in conveyer Scroll at the uniform velocity transmits; Described industrial computer is measured the length of this sheet material when detecting tested sheet material upper and lower surfaces flatness through laser sensor; Then be labeled as defective length areas starting point when plate surface detects when defective, and industrial computer is labeled as the terminal point of said defective length areas through the laser sensor length of opening entry this defective length areas simultaneously when the tested sheet material upper and lower surfaces of detection is qualified; And obtain the length of this defective length areas, underproof length areas is divided out in the then tested sheet material.
The technique effect that the present invention has: (1) has enlarged the scanning sensing range of tested sheet material through the back and forth movement of laser sensor, accurately draws the flatness of the thickness and the sheet material upper and lower surfaces of tested sheet material; (2) the scanning sensing range of sheet material has enlarged, and makes the data of collection more comprehensive and accurate, is difficult for causing the omission (3) of defective sheet material can mark out the defective length areas of tested sheet material, and measures this regional length.
Description of drawings
For content of the present invention is more clearly understood, below basis specific embodiment and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 thickness measurement with laser schematic representation of apparatus of the present invention.
Gearing synoptic diagram in Fig. 2 thickness measurement with laser device of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated:
(embodiment 1)
Like Fig. 1-2, the thickness measurement with laser device of present embodiment comprises upper and lower laser sensor 11,12, and these two laser sensors are located at the two ends of C type frame mechanism 2 relatively, C type frame mechanism 2 be located at one be used to control its straight-line displacement lead screw transmission mechanism 5.
The driving circuit of lead screw transmission mechanism 5 links to each other with an industrial computer, and the scrambler 4 of rotation amount that industrial computer and is used for detecting the screw mandrel of said lead screw transmission mechanism 5 links to each other; Industrial computer is made back and forth movement to control said laser sensor, and is detected the thickness and the surface smoothness of tested sheet material 9 through the action of the said lead screw transmission mechanism 5 of scrambler 4 controls; The tested sheet material of said transmission carries out transmitting by length direction through a gearing, and the direction of motion of this tested sheet material 9 is perpendicular to the outgoing laser beam of said laser sensor, and this tested sheet material 9 passes between said two laser sensors.
According to the back and forth movement track of laser beam at tested sheet material 9 upper and lower surfaces; Enlarge the sweep limit on tested sheet material 9 surfaces; Flatness to the full surface of sheet material detects; And the driving circuit that measuring accuracy can basis links to each other with industrial computer control lead screw transmission mechanism 5 drives the shuttle speed of laser sensor and controls, and its shuttle speed is high more, and measuring accuracy is just high more.
Said gearing contains: place said C type frame mechanism 2 left and right sides and drive a pair of parallel guide roller 8 that tested sheet material 9 passes said upper and lower laser sensor 11,12.
Said gearing also comprises: the rolling-up mechanism that is used for rolling sheet material; And be provided with a tension pick-up in the described rolling-up mechanism; Be used for detecting sheet material 9 is controlled 10 rotations of rolling-up mechanism Scroll by the thickness after the rolling angular velocity; Make the transmission that remains a constant speed of tested sheet material 9; And can go out the length of tested sheet material 9 according to the Time Calculation that the at the uniform velocity transfer rate of tested sheet material 9 combines laser sensor to come and go scanning, and further obtain between starting point and the terminal point of the defective length areas of tested sheet material apart from length.
The distance that said C type frame mechanism 2 moves horizontally is not more than the span of C type frame mechanism 2, makes laser sensor can return and leave measured material fully like this, is convenient to the automatic calibrate of maintenance of machine and system.
Adopt laser sensor that scanning is carried out coming and going fast in the complete up and down surface of whole tested sheet material; The wide range of the detection sheet material of this laser sensor; Comprise the accurate thickness measure in electrode of lithium cell film or battery pole piece and the other field, prolong pressure, solar silicon wafers, semiconductor and other irregular materials with inorganic material, non-ferrous metal paper tinsel/band, metal as special type is organic.
(embodiment 2)
The method of work of the laser measuring device for measuring of said embodiment 1 may further comprise the steps:
1., the spacing of the fixed upper and lower laser sensor 11,12 of advanced rower, promptly the spacing of two laser sensors upper surface that equals the tested sheet material 9 of standard is to the lower surface of the tested sheet material 9 of distance, standard of last laser sensor 11 to the thickness sum of the tested sheet material 9 of distance, standard of laser sensor 12 down;
2., after the record nominal data; Control C type frame mechanism 2 is moved horizontally to the working position; With described laser sensor to the dual-side of tested sheet material 9 along measuring, confirm that described lead screw transmission mechanism 5 driving laser sensors make the scope of back and forth movement at said tested sheet material 9 Widths;
3., lead screw transmission mechanism 5 drives described laser sensor and makes back and forth movement; Gearing drives tested sheet material 9 and between said two laser sensors, passes; The laser beam of laser sensor is done scanning at the upper and lower surfaces of tested sheet material 9 and is detected; Said industrial computer is handled the data of the tested sheet material that laser sensor collects, and obtains thickness data, surfacing degrees of data.
Drive the speed that described laser sensor is made back and forth movement through industrial computer control lead screw transmission mechanism 5, adopt the speed that improves above-mentioned back and forth movement to improve the precision of tested sheet material 9 surface smoothnesss.
Driving tested sheet material through the control of the tension pick-up in conveyer Scroll at the uniform velocity transmits; Described industrial computer is measured the length of this sheet material when detecting tested sheet material 9 upper and lower surfaces flatness through laser sensor; When detecting, plate surface then is labeled as defective length areas starting point when defective; And industrial computer is through the length of laser sensor while this defective length areas of opening entry; When tested sheet material 9 upper and lower surfaces of detection are qualified, be labeled as the terminal point of said defective length areas, and obtain the length of this defective length areas, underproof length areas is divided out in the then tested sheet material 9.
Obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not to be qualification to embodiment of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.

Claims (8)

1. a thickness measurement with laser device comprises the upper and lower laser sensor that is oppositely arranged (11,12) of being located at C type frame mechanism (2) two ends, C type frame mechanism (2) be located at one be used to control its straight-line displacement lead screw transmission mechanism (5), it is characterized in that:
The driving circuit of lead screw transmission mechanism (5) links to each other with an industrial computer, and the scrambler (4) of rotation amount that industrial computer and is used for detecting the screw mandrel of said lead screw transmission mechanism (5) links to each other;
Industrial computer is controlled the action of said lead screw transmission mechanism (5) through scrambler (4); Make back and forth movement to control said upper and lower laser sensor (11,12), and detect from the thickness and the surface smoothness of the tested sheet material (9) that passes between the described upper and lower laser sensor (11,12);
The tested sheet material of said transmission (9) carries out transmitting by length direction through a gearing, and the direction of motion of this tested sheet material (9) is perpendicular to the outgoing laser beam of said upper and lower laser sensor (11,12).
2. thickness measurement with laser device according to claim 1 is characterized in that:
Said gearing contains: place said C type frame mechanism (2) left and right sides and drive a pair of parallel guide roller (8) that tested sheet material (9) passes said upper and lower laser sensor (11,12).
3. thickness measurement with laser device according to claim 2 is characterized in that:
Said gearing also comprises: the rolling-up mechanism that is used for rolling sheet material; And be provided with a tension pick-up in the described rolling-up mechanism; Be used for detecting sheet material (9) and controlled the angular velocity of rolling-up mechanism Scroll (10) rotation, make tested sheet material (9) transmission that remains a constant speed by the thickness after the rolling.
4. thickness measurement with laser device according to claim 1 is characterized in that: the distance that said C type frame mechanism (2) moves horizontally is very much not in the span of C type frame mechanism (2).
5. thickness measurement with laser device according to claim 1 is characterized in that: tested sheet material is electrode of lithium cell film or battery pole piece.
6. the method for work of a laser measuring device for measuring according to claim 1 is characterized in that may further comprise the steps:
1., the spacing of the fixed upper and lower laser sensor (11,12) of advanced rower, the spacing of promptly upper and lower laser sensor (11,12) equals the distance of the upper surface of the tested sheet material of standard to the lower surface of the distance of last laser sensor (11), the tested sheet material of standard to laser sensor (12) down, the thickness sum of the tested sheet material of standard;
2., control C type frame mechanism (2) is moved horizontally to the working position; With described laser sensor the dual-side edge of tested sheet material (9) is measured, made the scope of back and forth movement at said tested sheet material (9) Width to confirm described lead screw transmission mechanism (5) driving laser sensor;
3., lead screw transmission mechanism (5) drives described laser sensor and makes back and forth movement; Gearing drives tested sheet material (9) and between said upper and lower laser sensor (11,12), passes; The laser beam of upper and lower laser sensor (11,12) is done scanning at the upper and lower surfaces of tested sheet material (9) and is detected; Said industrial computer is handled the data of the tested sheet material (9) that laser sensor collects, and obtains thickness data, surfacing degrees of data.
7. the method for work of laser measuring device for measuring according to claim 6 is characterized in that: drive the speed that described laser sensor is made back and forth movement through industrial computer control lead screw transmission mechanism (5).
8. the method for work of laser measuring device for measuring according to claim 6; It is characterized in that: drive tested sheet material through the control of the tension pick-up in conveyer Scroll and at the uniform velocity transmit; Described industrial computer passes through laser sensor when detecting tested sheet material (9) upper and lower surfaces flatness; Measure the length of this sheet material; Then be labeled as defective length areas starting point when plate surface detects when defective, and industrial computer is through the laser sensor length of opening entry this defective length areas simultaneously, is labeled as the terminal point of said defective length areas when upper and lower surfaces is qualified up to the tested sheet material of detection (9); And obtain the length of this defective length areas, underproof length areas is divided out in the then tested sheet material (9).
CN2011104378237A 2011-12-23 2011-12-23 Laser thickness measuring apparatus of lithium battery electrode and working method thereof Pending CN102519372A (en)

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CN103063151A (en) * 2012-12-31 2013-04-24 常州工学院 Laser thickness-measuring C-shaped frame mechanism and adjusting method thereof
CN103148790A (en) * 2013-03-14 2013-06-12 常州工学院 Micro-displacement thickness measurement method for lithium battery film
CN103363912A (en) * 2013-04-25 2013-10-23 苏州方林科技股份有限公司 Workpiece detecting equipment
CN103363911A (en) * 2013-04-25 2013-10-23 谢逢春 Laser thickness gauge taking laser as light source
CN103411548A (en) * 2013-08-08 2013-11-27 常熟冠林汽车饰件有限公司 Measuring equipment of safety air bag detonating fuse and use method of measuring equipment
CN104019754A (en) * 2014-06-21 2014-09-03 浙江天龙胶丸有限公司 Rapid capsule thickness detection device
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CN105222728A (en) * 2015-09-14 2016-01-06 深圳市星源材质科技股份有限公司 A kind of pick-up unit of lithium battery diaphragm surface smoothness and method thereof
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CN103063151A (en) * 2012-12-31 2013-04-24 常州工学院 Laser thickness-measuring C-shaped frame mechanism and adjusting method thereof
CN103148790A (en) * 2013-03-14 2013-06-12 常州工学院 Micro-displacement thickness measurement method for lithium battery film
CN103148790B (en) * 2013-03-14 2015-09-09 常州工学院 A kind of lithium battery film micrometric displacement thickness measuring method
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CN103363911A (en) * 2013-04-25 2013-10-23 谢逢春 Laser thickness gauge taking laser as light source
CN103363911B (en) * 2013-04-25 2016-11-30 谢逢春 Laser thickness gauge using laser as light source
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CN104269365A (en) * 2014-09-28 2015-01-07 武汉新芯集成电路制造有限公司 Wafer removal amount measuring device and method
CN104613883B (en) * 2015-02-11 2017-11-17 南通大学 The wet-film thickness difference measurement of sheet metal printed coating and uniformity appraisal procedure
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Application publication date: 20120627