CN111151516A - Method and device for improving laser cleaning precision - Google Patents
Method and device for improving laser cleaning precision Download PDFInfo
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- CN111151516A CN111151516A CN202010027829.6A CN202010027829A CN111151516A CN 111151516 A CN111151516 A CN 111151516A CN 202010027829 A CN202010027829 A CN 202010027829A CN 111151516 A CN111151516 A CN 111151516A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
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Abstract
The invention discloses a method for improving laser cleaning precision, which comprises the following steps of obtaining a coating reference position of a strip coating film, carrying out fixed-section tape transport with a preset length on a strip according to the coating reference position, monitoring the real-time length of the strip during fixed-section tape transport, judging that a distance deviation exists between the real-time length and the preset length, compensating the distance deviation, and carrying out laser cleaning on the coating film of the strip after the fixed-section tape transport; the invention also discloses a device for improving the laser cleaning precision. According to the method and the device, the distance deviation between the real-time length and the preset length of the belt material is compensated, so that the precision of cleaning the coating film of the belt material is improved, and the cleaning quality is guaranteed.
Description
Technical Field
The invention relates to the technical field of laser cleaning, in particular to a method and a device for improving laser cleaning precision.
Background
In the production process of the battery, the coating film in the set position area of the anode pole piece needs to be removed through laser cleaning to form a cleaning tank, so that the base material of the cleaning tank is exposed and meets the tab welding requirement. In the prior art, although a cleaning tank is formed at a coating film position of a base band by adopting a laser cleaning mode, the cleaning tank cannot avoid the influence of errors, so that the cleaning precision is low, and the cleaning quality is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method and a device for improving laser cleaning precision.
The invention discloses a method for improving laser cleaning precision, which comprises the following steps:
obtaining a coating reference position of the strip coating film;
carrying out fixed-section tape transport with preset length on the strip according to the coating reference position;
monitoring the real-time length of a strip during fixed-section strip traveling;
judging that distance deviation exists between the real-time length and the preset length, and compensating the distance deviation;
and carrying out laser cleaning on the coating film of the strip after the strip is transported at the fixed section.
According to an embodiment of the present invention, obtaining the coating reference level of the strip coating film further comprises:
and correcting the tape running direction of the tape.
According to one embodiment of the present invention, the coating film of the strip after the constant-length running is laser-cleaned, and a cleaning bath is formed.
According to an embodiment of the present invention, obtaining the coating reference level of the strip coating film further comprises:
judging that an angle deviation exists between the angle of the coating reference position and a preset reference angle;
before the coating film of the strip after the fixed-section strip is cleaned by laser, the method further comprises the following steps:
the angular deviation is compensated.
According to an embodiment of the present invention, compensating for an angular deviation includes:
compensating the angle deviation of the strip material in the tape moving direction; or/and
the angular deviation in the strip width direction is compensated.
According to an embodiment of the present invention, a method for compensating for an angular deviation in a tape running direction of a tape includes:
defining the deviation angle of the strip material in the tape running direction as α;
α is calculated according to a formula cos α ═ Δ L1/L1, where Δ L1 is the position deviation of the coating reference position in the belt traveling direction, and L1 is the preset width of the cleaning tank;
the angular deviation compensation is based on the deviation angle α of the strip material in the direction of travel.
According to an embodiment of the present invention, a method for compensating for an angular deviation in a width direction of a strip includes:
defining the deviation angle in the width direction of the strip as theta;
calculating theta according to a formula tan theta, namely delta L2/L2, wherein delta L2 is the position deviation of the coating reference position in the width direction of the strip material, and L2 is a preset detection distance;
the angular deviation compensation is performed according to the deviation angle theta in the strip width direction.
According to an embodiment of the present invention, obtaining a coating reference level of a strip coating film includes the following sub-steps:
detecting the passing strip; the strip comprises a base band and a plurality of coating films, wherein the plurality of coating films are sequentially coated on the base band at intervals;
the boundary position between the coating film and the base tape is identified to obtain the coating reference level.
According to an embodiment of the present invention, identifying a boundary position between the coating film and the base tape to obtain a coating reference level includes:
position information of the coating reference position, angle information of the coating reference position in the running direction, and angle information of the coating reference position in the strip width direction are obtained.
According to one embodiment of the invention, the fixed-length tape running of the preset length according to the coating reference position comprises the following sub-steps:
presetting a cleaning position;
calculating the fixed section tape length according to the coating reference position and the preset cleaning position;
and carrying out fixed-section tape transport according to the fixed-section tape transport length.
An apparatus for improving laser cleaning accuracy, comprising: a first cleaning device; the first cleaning device comprises a first reference position detection mechanism, a first laser cleaning mechanism, a first main driving mechanism and a first distance detection mechanism; the strip passes through a first reference position detection mechanism, a first laser cleaning mechanism, a first main driving mechanism and a first distance detection mechanism; the first reference position detection mechanism is used for obtaining a coating reference position of a strip coating film, the first main driving mechanism carries out fixed-section tape transport with a preset length on the strip according to the coating reference position, so that the coating film of the strip after the fixed-section tape transport is placed at a cleaning position of the first laser cleaning mechanism, and the first distance detection mechanism is used for detecting the real-time length of the strip during fixed-section tape transport; the first laser cleaning mechanism compensates the distance deviation between the real-time length and the preset length, and then performs laser cleaning on the coating film of the strip after the fixed section of strip is fed.
This application compensates through the real-time length of taking the tape and predetermine the distance deviation between the length, and then has promoted the precision when the coating film to the strip washs, has guaranteed cleaning quality.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flowchart illustrating a method for improving laser cleaning accuracy according to an embodiment;
FIG. 2 is a schematic view of the structure of a strip according to one embodiment;
FIG. 3 is a flow chart of a mid-range tape deck according to an embodiment;
FIG. 4 is a schematic structural diagram of a belt material from another perspective in one embodiment;
FIG. 5 is a flowchart illustrating a method for improving laser cleaning precision according to a second embodiment;
FIG. 6 is a schematic structural view of a second embodiment of a mechanism for detecting a strip and an angular deviation;
FIG. 7 is a schematic structural diagram of an apparatus for increasing laser cleaning precision in the third embodiment;
FIG. 8 is a schematic view showing the orientation of the web in the second cleaning apparatus according to the third embodiment;
FIG. 9 is a schematic view showing the orientation of the web in the second cleaning apparatus according to the fourth embodiment.
Description of reference numerals:
1. a first cleaning device; 11. a first reference position detection mechanism; 111. a belt passing deviation rectifying assembly; 112. a detection component; 12. a first laser cleaning mechanism; 121. cleaning the platform; 122. cleaning the component by laser; 123. a dust removal assembly; 13. a first main drive mechanism; 14. a first distance detection mechanism; 2. a second cleaning device; 21. a second reference position detection mechanism; 22. a second laser cleaning mechanism; 23. a second main drive mechanism; 24. a second distance detection mechanism; 25. a face-changing tape transport mechanism; 251. a first surface changing roller; 252. a second surface changing roller; 253. a third flour changing roller; 10. a frame body; 20. an unwinding mechanism; 30. an unwinding main drive mechanism; 40. a first caching mechanism; 50. a second cache mechanism; 60. a third caching mechanism; 70. a dust removal mechanism; 80. a visual detection mechanism; 90. a labeling mechanism; 200. a winding mechanism; 100. a strip of material; 110. a baseband; 120. coating a film; 130. a cleaning tank; 140. coating reference bits; 1000. a first detector; 2000. a second detector.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
It should be noted that all the directional indications in the embodiments of the present invention, such as up, down, left, right, front, and back, are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.
Furthermore, the descriptions of the present invention as "first", "second", etc. are provided for descriptive purposes only, and not for purposes of particular order or sequence, nor for purposes of limitation, and are intended to distinguish between components or operations that are described in the same technical language and are not intended to indicate or imply relative importance or imply the number of technical features that are indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
example one
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for improving laser cleaning accuracy according to a first embodiment. The method for improving the laser cleaning precision in the embodiment comprises the following steps:
s1, obtaining the coating reference level of the strip coating film.
And S2, performing fixed-section tape running of a preset length on the strip according to the coating reference position.
And S3, monitoring the real-time length of the strip when the strip is in the fixed section.
And S4, judging that the distance deviation exists between the real-time length and the preset length, and compensating the distance deviation.
And S5, carrying out laser cleaning on the coating film of the strip after the fixed-length tape transport.
By compensating the distance deviation between the real-time length of the strip tape and the preset length, the precision of the strip tape in the process of cleaning the coating film is improved, and the cleaning quality is guaranteed.
Preferably, in step S5, the coating film of the strip material after the constant-length running is laser-cleaned, and a cleaning bath is formed. The shape and size of the cleaning tank can be set according to actual requirements. The cleaning tank in this embodiment is a rectangular tank.
With continued reference to fig. 2, fig. 2 is a schematic structural view of a strip material according to the first embodiment. Further, in step S1 of the present embodiment, the obtaining of the coating reference level of the strip coating film includes the following sub-steps:
and S11, detecting the passing strip. The strip material comprises a base band and a plurality of coating films, and the plurality of coating films are sequentially coated on the base band at intervals.
S12, the boundary position between the coating film and the base tape is identified to obtain the coating reference level.
As shown in fig. 2, the strip material 100 includes a base tape 110, a coating film 120, and a cleaning bath 130. The number of the coating films 120 is plural, and plural coating films 120 are sequentially coated on the surface of the base tape 110 at intervals, and preferably, the intervals between two adjacent coating films 120 are the same. The initial end of each coating film 120 has a coating reference position 140, and the cleaning tank 130 is a slot cleaned at a set position on the coating film 120 by a laser cleaning method, so that the base tape 110 is exposed out of the coating film 120 for facilitating the subsequent welding requirement. The structure of performing the segment coating on the base tape 110 and forming the coating films 120 arranged at intervals can be realized by the existing coating process, and will not be described herein. It should be noted that the distance between two adjacent coating films 120 in the plurality of coating films 120 is determined by the coating process, and preferably, the distance between two adjacent coating films 120 is the same, but the difference between the two adjacent coating films 120 may also occur due to the coating process error, which is also the reason for the poor position consistency of the cleaning grooves formed by the conventional laser cleaning method.
The strip material 100 coated with the coating film 120 is transported in a roll form, and the strip material 100 is also fed in a roll form. In a specific application, the unwinding mechanism may be used to unwind the coiled strip material 100, and then the buffering mechanism may buffer the unwound strip material 100. The unwinding mechanism and the caching mechanism can adopt the existing devices, and are not described herein again. In step S11, the buffered tape material 100 is extended and passed through the detection mechanism, and the detection mechanism detects the passed tape material 100. In step S12, the boundary position between the coating film and the base tape is recognized by the detection means, and the coating reference level is obtained. In step S12 in this embodiment, the obtaining of the coating reference level is position information of the obtaining of the coating reference level. It can be understood that the coating film 120 is coated on the base tape 110, the base tape 110 is separated from the coating film 120, the base tape 110 and the coating film 120 have different colors, at the initial position of the coating film 120 coated on the base tape 110, a boundary line is formed between the base tape 110 and the coating film 120, that is, the coating reference level 140 in this embodiment, the base tape 110 and the coating film 120 have different colors, and different photoelectric reactions are generated when the photoelectric sensors detect, in this embodiment, the detection mechanism is a photoelectric sensor, and the coating reference level 140 of the passing strip material 100 can be detected by the photoelectric sensor, so that the coating reference level 140 is obtained, that is, the initial position of each coating film 120 on the base tape 110 is obtained. Before any one of the coating films 120 is subjected to laser cleaning, the coating reference level 140 of the coating film 120 needs to be detected, so that the cleaning position of the current coating film 120 is determined by the coating reference level 140 of the coating film 120 again, and thus the influence of different distances between two adjacent coating films 120 can be avoided.
With continued reference to fig. 3, fig. 3 is a flowchart of the fixed segment tape deck according to the first embodiment. Further, in step S2, the step of winding the strip material in fixed sections with preset lengths according to the coating reference positions includes the following sub-steps:
and S21, presetting a cleaning position.
S22, calculating the fixed segment tape length according to the coating reference position and the preset cleaning position.
And S23, performing fixed-section tape running according to the fixed-section tape running length.
In this embodiment, the coating film 120 of the strip material 100 is laser cleaned by a laser cleaning mechanism to form the cleaning tank 130, and the existing laser cleaning mechanism can be used for specific applications, which is not described herein again. While it is artificially set which specific position on the coating film 120 the cleaning tank 130 is formed, in practical applications, the position of the cleaning tank 130 on the coating film 120 is determined according to actual needs or customer needs, that is, the forming position of the cleaning tank 130 is preset and known, that is, the cleaning position is preset in step S21. In step S22, as shown in fig. 2, when the position of the cleaning tank 130 is known, the position of the coating reference point 140 is measured in real time in step S1, and the fixed-length running length "L" is calculated. In step S23, it can be understood that the releasing and buffering of the strip material 100 requires a power source to pull the strip material 100, for example, the strip material is pulled by a strip pulling mechanism of a servo motor and a moving roller, the strip pulling mechanism can pull the strip material 100 according to the fixed-segment strip moving length "L", that is, the strip material 100 is pulled to move by a fixed length of "L" distance from the coating reference position 140, so that the position to be cleaned on the coating film 120 is just right opposite to the cleaning position of the laser cleaning mechanism, and the laser cleaning mechanism performs laser cleaning at the position to form the cleaning tank 130, and the position where the cleaning tank 130 is formed is accurate, and each strip moving takes the re-determined coating reference position 140 as a calculation starting point, and reaches the preset cleaning position after moving the fixed length "L", thus ensuring that the position where the cleaning tank 130 is formed each time has high consistency. However, in practical applications, the servo motor of the tape pulling mechanism may generate an error when pulling the tape 100 having the length of "L", for example, the set fixed length "L" is 100 length units, and the servo motor of the tape pulling mechanism drives the moving roller to travel 100 length units according to a control command, but because the tape 100 and the moving roller slide relatively, the moving roller travels 100 length units, but the tape 100 actually pulled by the moving roller only travels 99 length units, where 1 length unit is a generated tape error, that is, a distance deviation of the actual tape, and the distance deviation affects the laser cleaning accuracy of the laser cleaning mechanism, and needs to be compensated to ensure and improve the laser cleaning accuracy.
To compensate for this, it is necessary to first obtain what the distance deviation is. Thus, in step S3, the actual length of the strip material 100 is monitored in real time as the draw mechanism performs the draw task with a constant length "L". In this embodiment, the real-time length monitoring of the strip material 100 may be implemented by a length measuring mechanism, for example, the length measuring roller and the compression roller are matched, the strip material 100 is wound on the length measuring roller, the compression roller is pressed on the strip material 100, so that the strip material 100 is attached to the length measuring roller, the length measuring roller can rotate along with the movement of the strip material 100, the real-time rotation angle of the length measuring roller is obtained by setting an encoder on the length measuring roller, and under the condition that the diameter of the length measuring roller is known, the circumference generated by the rotation of the length measuring roller can be calculated, so as to obtain the real-time length of the fixed-segment running strip of the strip material 100. Then, in step S4, the preset length in step S2 is compared with the real-time length in step S3, and if they match, it indicates that there is no distance deviation, and if they do not match, it indicates that there is a distance deviation, and it is necessary to compensate for the distance deviation. Then, in step S5, the laser cleaning mechanism needs to perform distance deviation compensation and then perform laser cleaning on the coating film of the strip after the fixed-length tape transport, thereby improving the cleaning accuracy of the laser cleaning mechanism. In the existing laser machine, the laser head has a displacement swinging function, and after distance deviation information is obtained, the laser machine can swing the laser head according to the distance deviation information to complete distance deviation compensation and then perform cleaning action. Referring to fig. 2 again, it should be noted that the actual size and shape of the cleaning tank 130 are based on actual requirements, the cleaning tank 130 in this embodiment is a rectangular tank structure, the distance between the cleaning tank 130 and the coating reference level 140 is determined, and when the laser cleaning mechanism cleans and forms the cleaning tank 130, the coating reference level 140 is used as a reference line, so that the long side of the formed cleaning tank 130 is parallel to the coating reference level 140.
Referring back to fig. 1, further, before obtaining the coating reference level of the strip coating film at step S1, the method further includes the following steps: and S0, correcting the tape running direction of the tape. The deviation of the tape running direction of the tape 100 is corrected, so that the accuracy of the subsequent tape running direction of the tape 100 is ensured, and the cleaning precision is further improved. In specific application, the deviation correcting mechanism can be used through the existing belt conveying deviation correcting mechanism, and the details are not repeated here.
With continued reference to fig. 4, fig. 4 is a schematic structural view of a belt material from another viewing angle in the first embodiment. It is understood that the base band 110 has two sides, which are defined as a-side and B-side in this embodiment. Both sides of the base tape 110 have the coating film 120, that is, both the a-side and the B-side of the strip material 100 have the coating film 120. According to different welding requirements, the a side of the strip material 100 needs to be cleaned to form the cleaning tank 130, or both the AB sides of the strip material 100 need to be cleaned to form the cleaning tanks 130 corresponding to each other on the AB sides of the base band 110. Therefore, in step S5, the coating film of the strip after the constant-length running is laser-cleaned, and two kinds of cleaning of S5a and S5b can be performed, respectively:
s5a is executed, and the coating film on the A side of the strip material is cleaned by laser.
S5b, the coating film of the strip after the fixed-length tape winding is subjected to laser cleaning, and the method comprises the following substeps:
and S5b1, performing laser cleaning on the coating film on the surface A of the strip material.
And S5b2, turning over the belt material.
And S5B3, performing laser cleaning on the coating film on the B side of the strip.
Thus, according to the actual requirement, the single-sided cleaning of the strip material 100 or the double-sided cleaning of the strip material 100 can be realized.
Preferably, in step S5a, the laser cleaning of the coating film on the a-side of the strip material includes:
and S5a1, performing laser cleaning on the odd-numbered coating film on the surface A of the strip material or performing laser cleaning on the even-numbered coating film on the surface A of the strip material.
And S5a2, performing laser cleaning on the even-numbered coating film on the surface A of the strip material, or performing laser cleaning on the odd-numbered coating film on the surface A of the strip material.
When the cleaning tank is specifically applied, two groups of detection mechanisms, laser cleaning mechanisms, length measuring mechanisms and belt pulling mechanisms are respectively arranged at the front and the back, and the detection mechanisms, the laser cleaning mechanisms, the length measuring mechanisms and the belt pulling mechanisms in the former group are matched to clean the coating film 120 with odd digits to form a cleaning tank 130; the latter group of the detection mechanism, the laser cleaning mechanism, the length measuring mechanism and the belt pulling mechanism are matched to clean the even-numbered coating film 120 to form a cleaning tank 130. Or the detection mechanism, the laser cleaning mechanism, the length measuring mechanism and the belt pulling mechanism in the previous group are matched to clean the coating film 120 at the even number position to form a cleaning tank 130; the latter set of detection mechanism, laser cleaning mechanism, length measuring mechanism and draw tape mechanism cooperate to clean the odd-numbered coating film 120 to form the cleaning tank 130. That is to say, the detection mechanism, the laser cleaning mechanism, the length measuring mechanism and the drawstring mechanism in the former group are only matched to clean the coating film 120 on the surface a of the strip material 100 at intervals, and the part of the surface a which is not cleaned is cleaned by the matching of the detection mechanism, the laser cleaning mechanism, the length measuring mechanism and the drawstring mechanism in the latter group, so that two coating films 120 on the base band 100 can be cleaned synchronously at the same time, and the cleaning efficiency is improved.
Preferably, in step S5b, two sets of the detecting mechanism, the laser cleaning mechanism, the length measuring mechanism and the tape pulling mechanism are also provided. In step S5b1, the coating film on the a side of the strip material is laser cleaned by the previous group of detecting mechanism, laser cleaning mechanism, length measuring mechanism and drawing mechanism. Then, in step S5B2, the strip material is turned over, specifically, the detection mechanism in the next group detects that the strip material 100 is turned by 180 degrees by matching of a plurality of turning rollers, and then the detection mechanism extends to the laser cleaning mechanism in the next group, and then in step S5B3, the laser cleaning mechanism in the next group cleans the B side of the turned strip material 100, so as to complete the AB side and the AB side of the strip material 100.
Example two
Referring to fig. 5, fig. 5 is a flowchart of a method for improving laser cleaning accuracy in the second embodiment. The method for improving the laser cleaning precision in this embodiment is different from the method for improving the laser cleaning precision in the first embodiment in that, in step S12, when the coating reference bit is obtained, in addition to the position information of the coating reference bit, the method further includes obtaining the angle information of the coating reference bit in the tape transport direction, and obtaining the angle information of the coating reference bit in the tape width direction.
In step S1, the method further includes the following steps after obtaining the coating reference level of the strip coating film: s1', it is determined that there is an angular deviation between the angle of the coating reference level and the preset reference angle.
Before the step S5, the method further includes the following steps before the step S5 is performed to the coating film of the strip after the strip is fed on the fixed length: s5', compensating for the angular deviation.
It will be appreciated that in step S0, the deviation correction of the strip material 100, i.e. the deviation correction mechanism cannot guarantee the complete deviation correction of the running direction of the strip material 100, still causes a certain error in the running direction of the strip material 100, which causes the coating reference position to form an angular deviation from the running direction and the width direction of the strip material 100, respectively, and the angular deviation affects the accuracy of the cleaning mechanism for cleaning the cleaning slot 130. The predetermined reference angle in the step S1' is the angle of the qualified cleaning tank 130 formed by the cleaning mechanism with the coating reference position as the reference line. Therefore, it is necessary to further improve the cleaning precision and ensure the cleaning quality by compensating for the angular deviation between the angle of the coating reference position and the preset reference angle.
Preferably, step S5' compensates the angular deviation, including compensating the angular deviation of the strip running direction; or/and compensating for angular deviation of the strip material in the width direction. Preferably, the angular deviation is compensated for in both the running direction of the strip material 100 and the width direction of the strip material 100 during cleaning.
The method for compensating the angle deviation of the tape running direction comprises the following steps:
1S 5' defining a deviation angle of the strip material in the direction of travel of α.
2S 5', α is calculated according to the formula cos α ═ Δ L1/L1, where Δ L1 is the position deviation of the coating reference position in the belt traveling direction, and L1 is the preset width of the cleaning tank.
3S 5', and performing angular deviation compensation according to the deviation angle α of the strip material in the tape running direction.
Compensating for angular deviations in the strip width direction, comprising the steps of:
4S 5' defining the deviation angle in the width direction of the strip as θ.
5S 5', calculating θ according to the formula tan θ ═ Δ L2/L2, where Δ L2 is the position deviation of the coating reference position in the strip width direction, and L2 is the preset detection distance.
6S 5', and performing angular deviation compensation according to the deviation angle theta of the strip width direction.
Referring to fig. 6, fig. 6 is a schematic structural diagram of the strip and the angular deviation detecting mechanism in the second embodiment, in this embodiment, the deviation angle of the coating reference position 140 is detected by the angular deviation detecting mechanism, the angular deviation detecting mechanism in this embodiment includes two first detectors 1000 and two second detectors 2000, the two first detectors 1000 are located on one side of the strip 100 and are arranged side by side along the width direction of the strip 100, a space is provided between the two first detectors 1000, the two first detectors 1000 cooperate to detect the deviation angle α of the strip 100 in the running direction, specifically, Δ L1/L1 is obtained by detecting the deviation value of the coating reference position 140 according to the formula cos α, and L1 is the preset width of the cleaning tank 130, because the cleaning tank 130 is preset according to actual requirements, the width of the cleaning tank is known, and when the coating reference position 140 deviates in the running direction, the deviation value of the coating reference position 140 is detected by the two first detectors 1000 arranged in the width direction of the strip 100, the formula 483/8663 is obtained by using the optical sensor area detecting function so as to calculate the running angle Δ L6778.
The two second detectors 2000 are located at one side of the strip material 100 and are arranged side by side along the running direction of the strip material 100, an interval is provided between the two second detectors 2000, and the two second detectors 2000 cooperate to detect the deviation angle theta of the strip material 100 in the width direction. Specifically, according to the formula tan θ ═ Δ L2/L2, where L2 is a preset detection distance, that is, the interval between two second detectors 2000, which is known, and Δ L2 is the position deviation of the coating reference position in the strip width direction, when the coating reference position 140 is deviated in the strip width direction of the strip 100, it can be obtained by detecting the value deviation of the coating reference position 140 by the two second detectors 2000 provided in the running direction of the strip 100, respectively. The second detector 2000 in the embodiment may employ a photosensor having a fiber-optic reflection function. The deviation angle θ of the strip material 100 in the width direction of the strip material 100 is calculated according to the above formula tan θ ═ Δ L2/L2.
In this embodiment, the deviation angle α of the strip material 100 in the feeding direction and the deviation angle theta of the strip material 100 in the width direction are compensated by the displacement and swing functions of the cleaning head of the cleaning mechanism, if the distance deviation in the first embodiment is defined as delta Y, the cleaning head of the cleaning mechanism is compensated by the process that the laser head first deviates delta Y in the feeding direction of the strip material 100, then rotates theta in the width direction of the strip material 100, and finally rotates α in the feeding direction of the strip material 100, so that the distance deviation and the angle deviation are compensated in sequence, and then the cleaning tank 130 is precisely cleaned by laser to form.
EXAMPLE III
With continuing reference to fig. 6 and 7, fig. 7 is a schematic structural diagram of an apparatus for improving laser cleaning precision in the third embodiment. The device for improving the laser cleaning precision in the embodiment comprises a first cleaning device 1. The first cleaning device 1 includes a first reference position detection mechanism 11, a first laser cleaning mechanism 12, a first main drive mechanism 13, and a first distance detection mechanism 14. The strip passes through a first reference position detection mechanism 11, a first laser cleaning mechanism 12, a first main driving mechanism 13 and a first distance detection mechanism 14. The first reference position detection mechanism 11 is used for obtaining a coating reference position of a strip coating film, the first main driving mechanism 13 is used for carrying out fixed-section tape running of a preset length on the strip according to the coating reference position, so that the coating film of the strip after the fixed-section tape running is placed at a cleaning position of the first laser cleaning mechanism 12, and the first distance detection mechanism 14 is used for detecting the real-time length of the strip during the fixed-section tape running; the first laser cleaning mechanism 12 compensates for a distance deviation between the real-time length and the preset length, and then performs laser cleaning on a coating film of the strip after the fixed-section tape transport.
Specifically, the laser cleaning device further includes a frame 10, an unwinding mechanism 20, an unwinding main drive mechanism 30, and a first buffer mechanism 40. the unwinding mechanism 20, the unwinding main drive mechanism 30, a first buffer mechanism 40, a first reference position detection mechanism 11, a first laser cleaning mechanism 12, a first main drive mechanism 13, and a first distance detection mechanism 14 are sequentially disposed on the frame 10. the unwinding mechanism 20 is disposed at a beginning of the frame 10, the unwinding main drive mechanism 30 is disposed adjacent to the unwinding mechanism 20. the unwinding mechanism 20 in this embodiment may employ a reel, a coiled strip 100 is wound around a reel position, the unwinding main drive mechanism 30 may employ an existing draw belt mechanism, such as a motor, a drive pulley, and a driven pulley, and cooperation with a drive roller, the strip 100 is wound around a driven pulley, the motor drives the roller to rotate, thereby driving the unwinding reel to release the strip 100. the first buffer mechanism 40 is disposed at a side of the unwinding main drive mechanism 30 away from the unwinding mechanism 20, preferably, the buffer mechanism 40 is disposed adjacent to the buffer mechanism 30, and the buffer mechanism 30 is disposed adjacent to the buffer mechanism 30, and the buffer mechanism 100 is disposed adjacent to the buffer mechanism 30, and the buffer mechanism 100 is disposed adjacent to the buffer mechanism 100, and the buffer mechanism 100 is disposed to the buffer mechanism 100, and the buffer mechanism, and mechanism 100, respectively, and the buffer mechanism, respectively, when the buffer mechanism 100, the buffer mechanism, the buffer mechanism, the buffer mechanism, the buffer mechanism, the mechanism.
With continued reference to fig. 7 and 8, fig. 8 is a schematic view of the direction of the web in the second cleaning apparatus according to the third embodiment. Further, the laser cleaning apparatus in this embodiment further includes a second cleaning apparatus 2. The second cleaning device 2 includes a second reference position detection mechanism 21, a second laser cleaning mechanism 22, a second main drive mechanism 23, and a second distance detection mechanism 24. The second reference position detecting mechanism 21 is adjacent to the first main driving mechanism 13. The first reference position detection mechanism 11, the first laser cleaning mechanism 12, the first main drive mechanism 13 and the first distance detection mechanism 14 cooperate to perform laser cleaning on the odd-numbered coating film on the surface a of the strip material or perform laser cleaning on the even-numbered coating film on the surface a of the strip material. The second reference position detection mechanism 21, the second laser cleaning mechanism 22, the second main drive mechanism 23, and the second distance detection mechanism 24 cooperate to perform laser cleaning on the even-numbered coating film on the a-side of the strip material or the odd-numbered coating film on the a-side of the strip material.
Specifically, the laser cleaning apparatus further includes a second buffer mechanism 50. The second buffer mechanism 50 is disposed on the frame 10 and located between the second cleaning device 2 and the first cleaning device 1, and preferably, the second buffer mechanism 50 is adjacent to the first main driving mechanism 13 and the second reference position detecting mechanism 21, respectively. In a specific arrangement, the first distance detection mechanism 14 may be disposed between the second buffer mechanism 50 and the first main drive mechanism 13. The strip material 100 pulled by the first main driving mechanism 13 continues to extend to the second buffer mechanism 50 for buffering. The second reference position detecting mechanism 21, the second laser cleaning mechanism 22, the second main driving mechanism 23, and the second distance detecting mechanism 24 are sequentially disposed on the frame body 10 from a direction close to the second buffer mechanism 50 to a direction away from the second buffer mechanism 50. The structures and operation principles of the second reference position detecting mechanism 21, the second laser cleaning mechanism 22, the second main driving mechanism 23 and the second distance detecting mechanism 24 in this embodiment are the same as those of the first reference position detecting mechanism 11, the first laser cleaning mechanism 12, the first main driving mechanism 13 and the first distance detecting mechanism 14, and will not be described herein again. In this way, the strip material 100 buffered by the second buffer mechanism 50 passes through the second reference position detection mechanism 21, the second laser cleaning mechanism 22 and the second distance detection mechanism 24 in sequence under the action of the pull belt of the second main drive mechanism 23, and the strip material 100 is accurately cleaned by the cooperation of the second reference position detection mechanism 21, the second laser cleaning mechanism 22, the second main drive mechanism 23 and the second distance detection mechanism 24.
In a specific application, the first cleaning device 1 cleans the coating film 120 on the a-side of the strip material 100 at intervals, for example, the coating film 120 at the odd or even positions, and the non-cleaned part of the a-side is cleaned by the second cleaning device 2, for example, the coating film 120 at the even or odd positions. In this way, the two coating films 120 on the base tape 100 can be cleaned simultaneously at the same time, thereby improving the cleaning efficiency.
Preferably, the laser cleaning apparatus further comprises a third buffer mechanism 60. The third buffer mechanism 60 is disposed on the frame body 10 and located on a side of the second main driving mechanism 23 away from the second laser cleaning mechanism 22, and the third buffer mechanism 60 is configured to buffer the strip 100 cleaned by the second cleaning device 2.
Preferably, the laser cleaning device further comprises a dust removing mechanism 70. The dust removing mechanism 70 is disposed on the frame body 10 and located on a side of the third buffer mechanism 60 away from the second cleaning device 2, the dust removing mechanism 70 is used for removing dust from the cleaned strip 100, and the dust removing mechanism 70 in this embodiment may adopt an existing brush dust removing mechanism, such as a brush, a moving roller and a motor.
Preferably, the laser cleaning device further comprises a visual detection mechanism 80. The visual inspection mechanism 80 is disposed on the frame body 10 and located on a side of the dust removing mechanism 70 away from the third buffer mechanism 60, the visual inspection mechanism 80 is used for visually inspecting the dust-removed strip 100, and the visual inspection mechanism 80 in this embodiment may adopt an existing CCD visual inspection system to detect whether the cleaning tank 130 is qualified.
Preferably, the laser cleaning device further comprises a labeling mechanism 90. The labeling mechanism 90 is disposed on the frame 10 and adjacent to the visual inspection mechanism 80, and is used for labeling the cleaning tank 130 that is visually inspected to be unqualified, such as blue label labeling, for identification in the subsequent process.
Preferably, the laser cleaning device further comprises a winding mechanism 200. The winding mechanism 200 is disposed at the end of the frame body 10, is adjacent to the labeling mechanism 90, and is used for winding the labeled strip material 100, and the winding mechanism 200 in this embodiment can be wound by using an existing winding mechanism.
It should be noted that, when the strip material 100 is extended and transferred between the above mechanisms, the direction of the strip material can be changed by the direction changing roller, so as to facilitate the reasonable layout of the above mechanisms.
Example four
With continued reference to fig. 9, fig. 9 is a schematic view of the direction of the strip in the second cleaning apparatus according to the fourth embodiment. The cleaning device in the present embodiment is different from that in the third embodiment in that: the first reference position detection means 11, the first laser cleaning means 12, the first main drive means 13, and the first distance detection means 14 perform laser cleaning of the coating film on the a-side of the strip material in cooperation, and continuously clean the coating film 120 on the a-side of the strip material 100. The second cleaning device 2 further comprises a face-changing deck 25. The surface changing and conveying mechanism 25 is used for changing the surface of the strip material before laser cleaning, so that the second reference position detection mechanism 21, the surface changing and conveying mechanism 25, the second laser cleaning mechanism 22, the second main driving mechanism 23 and the second distance detection mechanism 24 are matched to perform laser cleaning on the coating film on the surface B of the strip material.
Specifically, the surface-changing tape transport mechanism 25 includes a plurality of first surface-changing rollers 251, two second surface-changing rollers 252, and a plurality of third surface-changing rollers 253. The two second surface changing rollers 252 are horizontally disposed and located on two opposite sides of the cleaning platform of the second laser cleaning mechanism 22. The plurality of first surface changing rollers 251 are located below the cleaning platform of the laser cleaning mechanism 22, the plurality of third surface changing rollers 253 are located above the cleaning platform of the laser cleaning mechanism 22, the plurality of first surface changing rollers 251 are arranged at intervals counterclockwise, and the plurality of third surface changing rollers 253 are arranged at intervals clockwise. The strip 100 passing through the second reference position detecting mechanism 21 passes through the first plurality of face-changing rollers 251 arranged at intervals anticlockwise and is turned by 180 degrees, then passes through the second two horizontally arranged face-changing rollers 252 so as to be adsorbed by the cleaning platform of the laser cleaning mechanism 22, and then passes through the third plurality of face-changing rollers 253 arranged at intervals clockwise, so that the strip 100 extends and transfers towards the second main driving mechanism 23, and is cached by the third caching mechanism 60.
In conclusion, the deviation of the strip is corrected, the distance deviation between the real-time length of the strip moving and the preset length is compensated, the angle deviation between the angle of the coating reference position and the preset reference angle is compensated, the precision of the cleaning of the coating film of the strip is improved, and the cleaning quality is guaranteed.
The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (11)
1. A method for improving laser cleaning precision is characterized by comprising the following steps:
obtaining a coating reference position of the strip coating film;
carrying out fixed-section tape transport with preset length on the strip according to the coating reference position;
monitoring the real-time length of the strip during fixed-section strip traveling;
judging that a distance deviation exists between the real-time length and the preset length, and compensating the distance deviation;
and carrying out laser cleaning on the coating film of the strip after the strip is transported in a fixed section.
2. The method of claim 1, wherein obtaining the coating reference level of the strip coating film further comprises:
and correcting the tape running direction of the tape.
3. The method for improving the laser cleaning precision as claimed in claim 1, wherein the coating film of the strip material after the fixed-length strip is subjected to laser cleaning and forms a cleaning tank.
4. The method of claim 3, wherein obtaining the coating reference level of the strip coating film further comprises:
judging that an angle deviation exists between the angle of the coating reference position and a preset reference angle;
before the laser cleaning is carried out on the coating film of the strip after the fixed-section strip, the method further comprises the following steps:
compensating for the angular deviation.
5. The method of improving laser cleaning accuracy of claim 4, wherein compensating for the angular deviation comprises:
compensating the angle deviation of the strip material moving direction; or/and
and compensating the angle deviation of the strip width direction.
6. The method for improving the precision of laser cleaning according to claim 5, wherein the compensation of the angular deviation of the tape running direction comprises:
defining the deviation angle of the strip material in the tape running direction as α;
α is calculated according to the formula cosa ═ Δ L1/L1, where Δ L1 is the position deviation of the coating reference point in the belt traveling direction, and L1 is the width of the preset cleaning tank;
the angular deviation compensation is based on the deviation angle α of the strip material in the direction of travel.
7. The method for improving the precision of laser cleaning according to claim 5, wherein the compensation of the angular deviation in the width direction of the strip comprises:
defining the deviation angle of the width direction of the strip material as theta;
calculating theta according to a formula tan theta, namely delta L2/L2, wherein delta L2 is the position deviation of the coating reference position in the width direction of the strip material, and L2 is a preset detection distance;
and carrying out angle deviation compensation according to the deviation angle theta in the width direction of the strip.
8. The method for improving the precision of laser cleaning according to any one of claims 1 to 7, wherein obtaining the coating reference level of the strip coating film comprises the following sub-steps:
detecting the passing strip material; the strip comprises a base band and a plurality of coating films, wherein the plurality of coating films are sequentially coated on the base band at intervals;
and identifying the boundary position of the coating film and the base band to obtain the coating reference position.
9. The method of claim 8, wherein identifying the boundary position between the coating film and the base tape to obtain the coating reference level comprises:
and acquiring position information of the coating reference position, acquiring angle information of the coating reference position in the tape transport direction, and acquiring angle information of the coating reference position in the width direction of the strip.
10. The method for improving the precision of laser cleaning according to any one of claims 1 to 7, wherein the step of stepwise feeding the strip material by a predetermined length based on the coating reference level comprises the following sub-steps:
presetting a cleaning position;
calculating the fixed-section belt length according to the coating reference position and the preset cleaning position;
and carrying out fixed-section tape running according to the fixed-section tape running length.
11. A device for improving the precision of laser cleaning according to any one of claims 1 to 10, comprising a first cleaning device (1); the first cleaning device (1) comprises a first reference position detection mechanism (11), a first laser cleaning mechanism (12), a first main driving mechanism (13) and a first distance detection mechanism (14); the strip passes through the first reference position detection mechanism (11), the first laser cleaning mechanism (12), the first main driving mechanism (13) and the first distance detection mechanism (14); the first reference position detection mechanism (11) is used for obtaining a coating reference position of a strip coating film, the first main driving mechanism (13) is used for carrying out fixed-section tape transport with a preset length on the strip according to the coating reference position, so that the strip coating film after fixed-section tape transport is placed at a cleaning position of the first laser cleaning mechanism (12), and the first distance detection mechanism (14) is used for detecting the real-time length of the strip during fixed-section tape transport; and the first laser cleaning mechanism (12) compensates the distance deviation between the real-time length and the preset length, and then performs laser cleaning on the coating film of the strip after the fixed-section tape transport.
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