CN116673611A - Continuous processing equipment and method for material belt - Google Patents
Continuous processing equipment and method for material belt Download PDFInfo
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- CN116673611A CN116673611A CN202310715082.7A CN202310715082A CN116673611A CN 116673611 A CN116673611 A CN 116673611A CN 202310715082 A CN202310715082 A CN 202310715082A CN 116673611 A CN116673611 A CN 116673611A
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- 239000000463 material Substances 0.000 title claims abstract description 144
- 238000012545 processing Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 43
- 238000003466 welding Methods 0.000 claims abstract description 129
- 238000005520 cutting process Methods 0.000 claims abstract description 99
- 101100456571 Mus musculus Med12 gene Proteins 0.000 claims abstract description 45
- 238000003698 laser cutting Methods 0.000 claims abstract description 36
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 10
- 238000004080 punching Methods 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000010924 continuous production Methods 0.000 abstract description 3
- 238000003672 processing method Methods 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 description 84
- 229910001220 stainless steel Inorganic materials 0.000 description 84
- 239000013307 optical fiber Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 8
- 239000000956 alloy Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000009957 hemming Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000000750 progressive effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses continuous processing equipment and a continuous processing method for a material belt, wherein the continuous processing equipment comprises a feeding unit and a stamping unit, a cutting and welding unit is arranged between the feeding unit and the stamping unit, the cutting and welding unit comprises a fixedly arranged laser cutting and welding assembly and a displaceable material belt positioning assembly, the laser cutting and welding assembly comprises a MOPA infrared laser and a light splitting system, the material belt positioning assembly comprises a left jig assembly and a right jig assembly which are used for positioning the material belt to be processed, two-dimensional work tables which are used for adjusting the position of the material belt to be processed in a horizontal plane are connected to the left jig assembly and the right jig assembly, and a rocker assembly which is used for separating the cut material belt is arranged between the left jig assembly and the right jig assembly. The invention is not only suitable for continuous stamping processing of the material belt with the thickness of more than 3mm, but also can effectively realize continuous production of the material belt by an automatic production line, and realize splicing of the waste material belt for reuse.
Description
Technical Field
The invention relates to the technical field of laser processing, and particularly discloses continuous processing equipment and method for a material belt.
Background
In the stainless steel strip processing process, the stainless steel is required to be subjected to stamping forming by using a stamping die, in order to accelerate production efficiency and realize mass production, the die is generally designed to be suitable for an assembly line type structure, meanwhile, the stainless steel is designed to be in a strip-shaped form, and when the stainless steel strip passes through the die, one-time stamping is performed to complete the forming of a group of stainless steel. In production, a plurality of product workshops and production lines are needed, and when the stainless steel strip reel is replaced, the production equipment is required to be stopped and the efficiency and the productivity are seriously affected; the large amount of scrap tape also occurs throughout the connector process, resulting in significant waste.
The specification of Chinese patent No. 115722809A discloses a cutting and welding system for high-speed beam splitting of a material belt, which comprises a laser and a first collimator arranged along the optical path of the laser; the left jig assembly and the right jig assembly are used for positioning a material belt to be processed; the two-dimensional workbench is used for conveying the material strips cut by the laser cutting head to the welding station; the high-speed beam splitting device is used for splitting the laser beam output by the first collimator according to cutting and welding requirements; a laser fiber coupling device for coupling the cutting laser beam split by the high-speed beam splitter into a first transmission fiber and coupling the welding laser beam split by the high-speed beam splitter into a second transmission fiber; the first transmission optical fiber is connected with the second collimator, the output end of the second collimator is connected with the laser cutting head for cutting the material belt, and the laser cutting head is positioned at the cutting station; the second transmission optical fiber is connected with a third collimator; the laser galvanometer is used for adjusting the position and the movement track of the laser spot output by the third collimator; the beam combining device is used for combining the light beams output by the laser galvanometer; a focusing lens for focusing the beam-combined laser beam after being combined by the beam-combining device to output a welding material belt; the first to third collimators are used to adjust the divergent laser light into collimated parallel light. The technical scheme disclosed by the invention is that two material belts are respectively fixed by a clamp, and are respectively cut off by a laser cutting head and then welded under a laser head moving by a mechanism, and the technical scheme has the following defects: for stainless steel strips with a thickness of 3mm or more, the side surfaces of the strip are embrittled when the cutting head cuts, the strength after welding is affected, and the strip breaks when the strip is molded by an overshoot press (as shown in fig. 4).
Therefore, development of a cutting and welding system for high-speed light splitting of a material belt is needed to realize continuous stamping processing of stainless steel belts with the thickness of more than 3mm.
Disclosure of Invention
The invention aims to provide continuous processing equipment and method for a material belt, which are not only suitable for continuous stamping processing of the material belt with the thickness of more than 3mm, but also can effectively realize continuous production of the material belt by an automatic production line and splice the waste material belt for reuse.
In order to achieve the above purpose, the invention discloses a continuous processing device and a continuous processing method for a material belt, the continuous processing device comprises a feeding unit and a stamping unit, a cutting and welding unit is arranged between the feeding unit and the stamping unit, the cutting and welding unit comprises a fixedly arranged laser cutting and welding component and a displaceable material belt positioning component, the laser cutting and welding component comprises a MOPA infrared laser and a light splitting system, the material belt positioning component comprises a left jig assembly and a right jig assembly for positioning the material belt to be processed, the left jig assembly and the right jig assembly are both connected with a two-dimensional workbench for adjusting the position of the material belt to be processed in a horizontal plane, and a rocker component for separating the cut material belt is arranged between the left jig assembly and the right jig assembly.
The invention discloses continuous processing equipment for a material belt, which comprises a first stamping unit and a second stamping unit, wherein a cutting and welding unit is arranged between the first stamping unit and the second stamping unit, the cutting and welding unit comprises a fixedly arranged laser cutting and welding assembly and a displaceable material belt positioning assembly, the laser cutting and welding assembly comprises a MOPA infrared laser and a light splitting system, the material belt positioning assembly comprises a left jig assembly and a right jig assembly for positioning the material belt to be processed, two-dimensional work tables for adjusting the position of the material belt to be processed in a horizontal plane are respectively connected to the left jig assembly and the right jig assembly, and a rocker assembly for separating the cut material belt is arranged between the left jig assembly and the right jig assembly.
In a preferred embodiment of the invention, the working temperature of the MOPA infrared laser is 24-26 ℃, and the parameters of the MOPA infrared laser are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the M2 factor of the beam quality is less than or equal to 1.3, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ.
In a preferred embodiment of the present invention, the MOPA infrared laser includes a cutting operation mode and a welding operation mode; in the cutting working mode, the laser parameters are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the beam quality M2 factor is less than or equal to 1.2, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ; in the welding working mode, the laser parameters are 800-1200nm wavelength, 50-500W average power, 50-500W peak power, and the M2 factor of the beam quality is less than or equal to 1.3.
In a preferred embodiment of the invention, the rocker assembly comprises a rocker and a rocking motor for driving the rocker to rock, a plane formed by the rocker when rotating is perpendicular to a plane of the material belt to be processed, and a plane formed by the rocker when rotating intersects with the plane of the material belt to be processed.
In a preferred embodiment of the invention, the left jig assembly and the right jig assembly are provided with a plurality of positioning pins which are integrally formed, the positioning pins can prevent the material belt from deforming in the cutting and welding process, and the cutting and welding unit realizes laser positioning based on the positioning pins.
In a preferred embodiment of the invention, the thickness of the strip to be processed is not less than 3mm.
In a preferred embodiment of the present invention, the spectroscopic system comprises a collimator, a coaxial image acquisition device, a spectroscope, a temperature sensor, a laser galvanometer and a laser field lens.
In a preferred embodiment of the invention, a feeding manipulator is arranged between the feeding unit and the punching unit or between the two punching units.
The invention also discloses a continuous feeding device based on the continuous feeding deviceThe method is characterized in that: the object to be processed is a 3mm material belt, the optical system is adjusted to enable the laser focus to be used as a processing surface, and the power density of the laser spot is 10 4 ～10 6 The laser spot of the MOPA is 100-700um, and the method comprises the following steps:
s1: after the old coil is stamped by the stamping machine, reserving 0.5-1 meter of old coil steel strip as a tail, enabling equipment to reach a processing area, fixing a new coil at a feeding position, leveling by a plate straightening machine, and reserving 1-2 meters as a stub bar;
s2: aligning a material belt with the left material head thickness of 3mm with a positioning pin, and placing the material belt on a left jig assembly positioned on a two-dimensional workbench;
s3: the computer control board card and the laser cutting and welding integrated software are adopted, when the two-dimensional platform and the lifting platform are adjusted to test the strongest laser, the position with the smallest light spot is used as a focus, and the light spot of the laser is 100-700um;
s4: adjusting cutting coordinates in integrated software according to the size of the material belt, and moving the two-dimensional platform to a left cutting position to enable laser to precisely act on the processing position of the material belt on the left jig assembly;
s5: cutting patterns are made in integrated software according to the size of the material belt, MOPA laser parameters are set to be pulse cutting modes, the laser power is 200-500W, the laser pulse width is 1-5 ms, the frequency is 1-200 HZ, the laser times are 1-10 times, and a vibrating mirror is adjusted to enable the laser speed to be 1-500 mm/s;
s6: triggering cutting mode laser, completing cutting of a material belt on the left jig assembly under the effect of infrared laser radiation, enabling a rocker of the rocker assembly to advance to a cutting position, swinging rapidly after rotating for 45 degrees, removing waste materials after cutting the material belt, enabling the rocker of the rocker assembly to retreat to an original point, and enabling the material belt on the left jig assembly to retreat to a left feeding position; s7: the material belt on the right jig assembly repeats S2-S5 to complete cutting of the material belt on the right jig assembly, and the material belt tail on the right jig assembly is stopped at a right cutting position;
s8: feeding the left cut stainless steel strip head to a right cutting position to finish the splicing of the left and right stainless steel strips; s9: according to the splicing sizes of the material belt on the left jig assembly and the material belt on the right jig assembly, making welding patterns in integrated software, setting MOPA laser parameters to be 200-500W, setting laser to be a continuous welding mode, setting the laser times to be 1 time, and adjusting a vibrating mirror to enable the laser speed to be 10-200 mm/s;
s10: switching the MOPA laser to a continuous welding mode, triggering laser, and carrying out laser welding on a material belt on the left jig assembly and a material belt on the right jig assembly under the effect of infrared laser radiation to realize high-quality fine welding of the stainless steel belt;
s11: closing the laser, cooling the material belt to form welding spots, keeping the two-dimensional platform in a static state in the laser emission process, and ensuring that the surfaces of the welding spots are free from splashing and the welding spots are consistent in size;
s12: when the number of the stainless steel belts is plural, the two-dimensional platform is moved to repeat S1-S10.
In a preferred embodiment of the invention, the invention comprises a MOPA fiber laser (comprising MOPA and two continuous working modes), a collimator arranged on a laser light path and a laser galvanometer, and the invention aims to solve the defects in the traditional method and provide brand new process equipment and method for effectively cutting and welding stainless steel. An optical fiber laser is adopted for laser integrated cutting and welding, the optical fiber laser is subjected to constant temperature control, so that the working temperature of the optical fiber laser is 24-26 ℃, the laser cutting and welding method selects stainless steel and other material strips for cutting and welding, and the power density of laser spots is 10 4 ～10 6 The material belt laser cutting and welding equipment is arranged on a workbench to splice a first stainless steel belt and a second stainless steel belt which is arranged opposite to the first stainless steel belt, and comprises a first positioning jig, a second positioning jig, laser cutting, a first driving mechanism, a second driving mechanism and a laser welding head, wherein the laser cutting simultaneously cuts a cutting end of the first material belt and a cutting end of the second material belt. The stainless steel laser cutting device cuts the first stainless steel strip and the second stainless steel strip simultaneously by using a laser MOPA mode to ensure that the cutting surfaces of the first stainless steel strip and the second stainless steel strip have the same cutting precision, and uses a continuous mode of a laser to cut the first stainless steel strip and the second stainless steel stripThe two stainless steel belts are welded into a stainless steel belt to ensure the tensile strength and bending resistance of the stainless steel belt. The obtained stainless steel strip has no dislocation, steps and other factors, the consistency of welding spots is good, the surface of a workpiece is free from splashing, and the precision welding requirement of the stainless steel strip is met. In addition, in the welding process, the optical fiber laser is subjected to constant temperature control, so that the working temperature of the optical fiber laser is 24-26 ℃, the laser stability is better in the temperature range, and the stability of cutting and welding quality is ensured.
In a preferred embodiment of the present invention, further comprising: the laser vibrating mirror is used for adjusting the position and the movement track of the laser spot output by the collimator; the beam combining device is used for combining the light beams output by the laser; a focusing mirror for outputting the combined laser output by the laser vibrating mirror in a focusing way; the left jig and the right jig accurately position the left stainless steel belt and the right stainless steel belt, so that the splicing precision is ensured; and rotating and poking the motor to remove the waste materials after the stainless steel strip is cut.
In a preferred embodiment of the present invention, the optical path MOPA laser coaxial device includes an optical path lens group, and the optical path lens group includes total reflection and beam expansion.
In a preferred embodiment of the invention, the pitch of the material belt is ensured to be unchanged in the laser cutting and welding process by a special positioning jig, so that the laser cutting and welding precision is improved.
In a preferred embodiment of the invention, the laser wavelength range of the cutting and welding laser output is in the range of 800nm to 1200nm.
In a preferred embodiment of the invention, the MOPA infrared laser welds the light energy generated in the continuous mode, the laser parameters are 800nm-1200nm wavelength, 50-500W average power, 50-500W continuous mode power, and the M2 factor of the beam quality is less than or equal to 1.3.
In a preferred embodiment of the invention, the MOPA infrared laser cuts the light energy generated by the MOPA mode, the laser parameters are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the M2 factor of the beam quality is less than or equal to 1.3, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ.
In a preferred embodiment of the invention, the same laser and light path are used for cutting and welding, so that the rim charge is flush during laser cutting, and the rim charge is strong enough during welding and is not easy to break.
In a preferred embodiment of the present invention, the laser spot after focusing of the MOPA fiber laser is a spot of 100-700 μm.
In a preferred embodiment of the invention, the jig and the pins on the jig are integrally formed, and the accumulated precision is +/-0.01 mm.
In a preferred embodiment of the invention, the first stainless steel strip with the thickness of 0.4mm is fixed on a left clamp, a cover plate of the left clamp is installed, the second stainless steel strip with the thickness of 0.4mm is fixed on a right clamp, a cover plate of the right clamp is assembled and fixed on a two-dimensional platform, and the clamp is provided with a pin integrally formed with the clamp, so that the deformation of a product in the cutting and welding processes is prevented, the accurate positioning of laser can be facilitated, and the welding quality is improved.
In a preferred embodiment of the invention, after the stainless steel strip is cut, the rocker is moved to the cutting position and is rapidly swung for 1-5 s after rotating for 45 degrees, so that the two sides of a cutting seam of the stainless steel strip are adhered after laser cutting, waste materials after the cutting of the stainless steel strip are rapidly swung, and the welding quality is improved.
In a preferred embodiment of the invention, when the two-dimensional platform and the lifting platform are adjusted to test the strongest laser by adopting a computer control board card and laser welding software, the position with the smallest light spot is used as a focal point, namely a processing surface, the power density of the laser light spot is 1041106W/cm < 2 >, and the laser light spots are all 100-700m.
In a preferred embodiment of the invention, the setting parameters of the 10 th step are laser power 450W, laser pulse width 1-5 ms, frequency 1-200 HZ, laser times 1 pass, and adjusting the vibrating mirror to make the laser speed 1-500 mm/s.
In a preferred embodiment of the invention, the two-dimensional platform remains stationary during the seventh step of laser firing.
The beneficial effects of the invention are as follows: the invention adopts a continuous processing device for the material belt, which is suitable for stainless steel belt welding in the fields of stamping, secondary forming, secondary stamping, automatic assembly and the like. The production efficiency is improved for customers, the scrappage is reduced, and the method is the first choice of high-end stainless steel belts. It should be noted that, as disclosed in CN115722809a, for stainless steel with a thickness of 0.1mm or more and most metal alloy materials, a curling phenomenon occurs during the mechanical cutting process, which affects the welding accuracy and strength. The stainless steel cutting and welding integrated device can cut and weld a stainless steel belt with the thickness of more than 0.1mm and most metal alloy materials. The problem of the traditional cutter hemming can be solved, and the quality and the efficiency of the welding process are greatly improved. The MOPA infrared laser parameters are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the beam quality M2 factor is less than or equal to 1.3, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ. . The light energy generated by the MOPA infrared laser can be easily absorbed by the high-reflection material, the cutting of the stainless steel band with the thickness of more than 0.05mm and most metal alloy materials can be easily realized through laser parameters, and meanwhile, the accurate control of the laser radiation energy can be easily realized through controlling pulse width and repetition frequency by the continuous mode light energy of the MOPA infrared laser.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a graph showing the effect of cutting a stainless steel strip according to the present invention;
FIG. 3 is a graph showing the effect of welding the stainless steel strips according to the present invention;
FIG. 4 is a broken away view of a 3mm stainless steel stamping;
FIG. 5 is a 3mm stainless steel stamping pass chart;
FIG. 6 is a schematic illustration of a 3mm stainless steel stamping part after being rolled by a stamping mill;
in the figure, a 101-MOPA fiber laser; 102-a collimator; 103-an on-axis image acquisition device; 105-spectroscope; 106-a temperature sensor; 107-laser galvanometer; 108-spectroscope; 109-rocker module; 110-a rotating electric machine; 111-a toggle motor; 112-beam combining lens; 113-laser field lens; 114-left jig; 115-right jig; 116-left X, Y two-dimensional workbench; 117-right X, Y two-dimensional workbench; 118-new rolls; 119-plate finishing machine; 120-punching machine.
Detailed Description
The following describes the invention in further detail, including preferred embodiments, by way of the accompanying drawings and by way of examples of some alternative embodiments of the invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The invention discloses continuous processing equipment for a material belt, which comprises a feeding unit and a stamping unit, wherein a cutting and welding unit is arranged between the feeding unit and the stamping unit, the cutting and welding unit comprises a fixedly arranged laser cutting and welding assembly and a displaceable material belt positioning assembly, the laser cutting and welding assembly comprises a MOPA infrared laser and a light splitting system, the material belt positioning assembly comprises a left jig assembly and a right jig assembly for positioning the material belt to be processed, two-dimensional work tables for adjusting the position of the material belt to be processed in a horizontal plane are respectively connected to the left jig assembly and the right jig assembly, and a rocker assembly for separating the cut material belt is arranged between the left jig assembly and the right jig assembly.
The invention discloses continuous processing equipment for a material belt, which comprises a first stamping unit and a second stamping unit, wherein a cutting and welding unit is arranged between the first stamping unit and the second stamping unit, the cutting and welding unit comprises a fixedly arranged laser cutting and welding assembly and a displaceable material belt positioning assembly, the laser cutting and welding assembly comprises a MOPA infrared laser and a light splitting system, the material belt positioning assembly comprises a left jig assembly and a right jig assembly which are used for positioning the material belt to be processed, two-dimensional workbenches used for adjusting the position of the material belt to be processed in a horizontal plane are respectively connected to the left jig assembly and the right jig assembly, and a rocker assembly used for separating the cut material belt is arranged between the left jig assembly and the right jig assembly.
It should be noted that the optical splitting system of the present invention belongs to the prior art, and its structure is consistent with the disclosure of CN115722809a, and includes: collimator 2: a device for adjusting divergent laser light output from an optical fiber to be nearly parallel light. Coaxial image acquisition device 3: a conventional imaging device focuses the spot image seen by beam splitter 105, beam splitter 108, laser galvanometer 107, and laser field mirror 113 onto its target surface for image acquisition. The specific parameters and manufacturing process are not relevant to the method of the invention.
It should be noted that the feeding unit may include a coiling machine and a plate feeding machine, and all materials may be fed by a manipulator or manually. The stamping unit may comprise a separate die cutting die or a progressive die. The continuous production can be realized without any process, and the recycling of waste materials can be realized.
It should be further noted that the invented material strip may be a steel, stainless steel, alloy, or the like material strip.
In a preferred embodiment of the invention, the working temperature of the MOPA infrared laser is 24-26 ℃, the parameters of the MOPA infrared laser are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the factor of the beam quality M2 is less than or equal to 1.3, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ.
In a preferred embodiment of the invention, the MOPA infrared laser includes a cutting mode of operation and a welding mode of operation; in the cutting working mode, the laser parameters are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the beam quality M2 factor is less than or equal to 1.2, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ; in the welding working mode, the laser parameters are 800-1200nm wavelength, 50-500W average power, 50-500W peak power, and the M2 factor of the beam quality is less than or equal to 1.3.
In a preferred embodiment of the invention, the rocker assembly comprises a rocker and a rocking motor for driving the rocker to rock, a plane formed by the rocker during rotation is perpendicular to a plane of a material belt to be processed, the plane formed by the rocker during rotation intersects with the plane of the material belt to be processed, after the stainless steel belt is cut, the rocker moves to a cutting position and rapidly rocks for 1-5 s after rotating for 45 degrees, so that two sides of a cutting seam of the stainless steel belt can be adhered after laser cutting, waste materials after cutting the stainless steel belt are rapidly rocked, and the welding quality is improved.
In a preferred embodiment of the invention, the left jig assembly and the right jig assembly are respectively provided with a plurality of integrally formed locating pins, the locating pins can prevent the material belt from deforming in the cutting and welding processes, the cutting and welding unit realizes laser positioning based on the locating pins, the jig and the pins on the jig adopt an integrally formed mode, and the accumulated precision is +/-0.01 mm.
In a preferred embodiment of the invention, the thickness of the strip to be processed is not less than 3mm.
In a preferred embodiment of the present invention, the beam splitting system (which may also be referred to as a beam combining device for combining the beams output by the laser) includes a collimator, a coaxial image acquisition device, a beam splitter, a temperature sensor, a laser galvanometer, and a laser field lens. Wherein, first spectroscope 105: a45-degree spectroscopic lens can transmit 1064nM infrared laser light in the 0-degree direction and reflect 635nM visible light in the 45-degree direction. The second beam splitter 108: a45-degree spectroscopic lens can transmit 1064nM infrared laser light in the 0-degree direction and reflect 635nM visible light in the 45-degree direction. An infrared temperature sensor 7: a temperature measuring device utilizing infrared radiant energy of a measuring object focuses the thermal infrared radiant energy of a welding spot received by a first spectroscope 105, a laser galvanometer 107 and a focusing mirror 113 to achieve the effect of measuring the temperature of the welding spot. Laser galvanometer 107: also known as a laser scanner, consists of an X-Y optical scanning head, an electronic drive amplifier and an optical mirror. The signal provided by the computer controller drives the optical scanning head through the driving amplifying circuit, so that the deflection of the laser beam is controlled in the X-Y plane. The specific specifications are not relevant to the method according to the invention. Laser field mirror 113: and a lens which focuses and outputs the combined laser output by the laser galvanometer and works near the focal plane of the objective lens.
In a preferred embodiment of the invention, a feeding robot is arranged between the feeding unit and the punching unit or between the two punching units.
In a preferred embodiment of the invention, the first stainless steel strip head end alignment pin with the thickness of 3mm is fixed on a left clamp, a left clamp cover plate is installed, the second stainless steel strip tail end alignment pin with the thickness of 3mm is fixed on a right clamp, a right clamp cover plate is assembled and fixed on a two-dimensional platform, and the clamp is provided with a pin integrally formed with the clamp in the step of cutting and welding, so that the deformation of a product is prevented, the accurate positioning of laser can be facilitated, and the welding quality is improved.
The invention is used for being arranged on a workbench to splice a first stainless steel belt and a second stainless steel belt which is arranged opposite to the first stainless steel belt, and comprises a first positioning jig, a second positioning jig, laser cutting, a first driving mechanism, a second driving mechanism and a laser welding head, wherein the laser cutting simultaneously cuts a cutting end of a first material belt and a cutting end of a second material belt. The stainless steel laser cutting device utilizes a laser MOPA mode to cut the first stainless steel belt and the second stainless steel belt simultaneously so as to ensure that the cutting surfaces of the first stainless steel belt and the second stainless steel belt have the same cutting precision, and utilizes a continuous mode of a laser to weld the first stainless steel belt and the second stainless steel belt into one stainless steel belt so as to ensure the tensile strength and the bending resistance of the stainless steel belt. The obtained stainless steel strip has no dislocation, steps and other factors, the consistency of welding spots is good, the surface of a workpiece is free from splashing, and the precision welding requirement of the stainless steel strip is met. In addition, in the welding process, the optical fiber laser is subjected to constant temperature control, so that the working temperature of the optical fiber laser is 24-26 ℃, the laser stability is better in the temperature range, and the stability of cutting and welding quality is ensured. The MOPA laser coaxial device comprises a light path lens group, wherein the light path lens group comprises total reflection and beam expansion.
The invention also discloses a method for realizing continuous processing of the material belt based on the continuous processing equipment of the material belt, wherein the processing object is the material belt with the thickness of 3mm, the optical system is adjusted to enable the laser focus to be used as the processing surface, and the power density of the laser facula is 10 4 ～10 6 The laser spot of the MOPA is 100-700um, and the method comprises the following steps:
s1: after the old coil is stamped by the stamping machine, reserving 0.5-1 meter of old coil steel strip as a tail, enabling equipment to reach a processing area, fixing a new coil at a feeding position, leveling by a plate straightening machine, and reserving 1-2 meters as a stub bar;
s2: aligning a material belt with the left material head thickness of 3mm with a positioning pin, and placing the material belt on a left jig assembly positioned on a two-dimensional workbench;
s3: the computer control board card and the laser cutting and welding integrated software are adopted, when the two-dimensional platform and the lifting platform are adjusted to test the strongest laser, the position with the smallest light spot is used as a focus, and the light spot of the laser is 100-700um;
s4: adjusting cutting coordinates in integrated software according to the size of the material belt, and moving the two-dimensional platform to a left cutting position to enable laser to precisely act on the processing position of the material belt on the left jig assembly;
s5: cutting patterns are made in integrated software according to the size of the material belt, MOPA laser parameters are set to be pulse cutting modes, the laser power is 200-500W, the laser pulse width is 1-5 ms, the frequency is 1-200 HZ, the laser times are 1-10 times, and a vibrating mirror is adjusted to enable the laser speed to be 1-500 mm/s;
s6: triggering cutting mode laser, completing cutting of a material belt on the left jig assembly under the effect of infrared laser radiation, enabling a rocker of the rocker assembly to advance to a cutting position, swinging rapidly after rotating for 45 degrees, removing waste materials after cutting the material belt, enabling the rocker of the rocker assembly to retreat to an original point, and enabling the material belt on the left jig assembly to retreat to a left feeding position; s7: the material belt on the right jig assembly repeats S2-S5 to complete cutting of the material belt on the right jig assembly, and the material belt tail on the right jig assembly is stopped at a right cutting position, wherein in the step, the two-dimensional platform is kept in a static state in the laser emission process;
s8: feeding the left cut stainless steel strip head to a right cutting position to finish the splicing of the left and right stainless steel strips; s9: according to the splicing sizes of the material belt on the left jig assembly and the material belt on the right jig assembly, making welding patterns in integrated software, setting MOPA laser parameters to be 200-500W, setting laser to be a continuous welding mode, setting the laser times to be 1 time, and adjusting a vibrating mirror to enable the laser speed to be 10-200 mm/s;
s10: switching the MOPA laser to a continuous welding mode, triggering laser, and carrying out laser welding on a material belt on the left jig assembly and a material belt on the right jig assembly under the effect of infrared laser radiation to realize high-quality fine welding of the stainless steel belt;
s11: closing the laser, cooling the material belt to form welding spots, keeping the two-dimensional platform in a static state in the laser emission process, enabling the surfaces of the welding spots to be free of splashing, enabling the sizes of the welding spots to be consistent, and enabling the sizes of the welding spots to be as shown in fig. 2 and 3;
s12: when the number of the stainless steel belts is plural, the two-dimensional platform is moved to repeat S1-S10.
The method uses continuous processing equipment of the material belt as shown in fig. 1, and mainly comprises the following steps:
MOPA fiber laser 1: a fiber laser with peak energy mode and continuous energy mode has the wavelength of 800-1200nM, average power of 50-300W, peak power of more than 10KW, beam quality M2 factor less than or equal to 1.3, minimum pulse width of 1ns and maximum frequency of 6000KHZ.
Collimator 2: an apparatus for adjusting divergent laser light output from an optical fiber to nearly parallel light is specifically designed independently of the method of the present invention.
Coaxial image acquisition device 3: a conventional imaging device focuses the spot image seen by beam splitter 105, beam splitter 108, laser galvanometer 107, and focusing mirror 113 onto its target surface for image acquisition. The specific parameters and manufacturing process are not relevant to the method of the invention.
Beam splitter 105: a45-degree spectroscopic lens can transmit 1064nM infrared laser light in the 0-degree direction and reflect 635nM visible light in the 45-degree direction.
Beam splitter 108: a45-degree spectroscopic lens can transmit 1064nM infrared laser light in the 0-degree direction and reflect 635nM visible light in the 45-degree direction.
An infrared temperature sensor 106: a temperature measuring device utilizing infrared radiant energy of a measuring object focuses the thermal infrared radiant energy of a welding spot received by a spectroscope 105, a laser galvanometer 107 and a focusing mirror 113 to achieve the effect of measuring the temperature of the welding spot.
Laser galvanometer 107: the laser scanner consists of X-Y optical scanning head, electronic driving amplifier and optical reflecting lens. The signal provided by the computer controller drives the optical scanning head through the driving amplifying circuit, so that the deflection of the laser beam is controlled in the X-Y plane. The specific specifications are not relevant to the method according to the invention.
Laser field mirror 113: and a lens which focuses and outputs the combined laser output by the laser galvanometer and works near the focal plane of the objective lens.
The traditional cutter and laser welding method is used for welding stainless steel with the thickness of more than 3mm and most of metal alloy materials, and hemming phenomenon can occur in the mechanical cutting process, so that welding precision and strength are affected. The stainless steel cutting and welding integrated device can cut and weld the stainless steel band with the thickness of more than 3mm. The problem of the traditional cutter hemming can be solved, and the quality and the efficiency of the welding process are greatly improved. The MOPA infrared laser parameters are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the beam quality M2 factor is less than or equal to 1.3, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ. . The light energy generated by the MOPA infrared laser can be easily absorbed by the stainless steel band, the stainless steel band with the thickness of more than 1mm can be easily cut through a laser cutting mode, and meanwhile, the light energy of the continuous welding mode of the MOPA infrared laser can be easily controlled accurately through controlling pulse width and repetition frequency, so that the purpose of precise welding is achieved.
The invention adopts advanced design concept and combines laser and welding machine. The welding repair welding time is short and the heating value is small by the instant high-temperature fusion technology. Can be welded with stainless steel material with a thickness of 3mm or more, and will not break when formed by a press machine (see fig. 5). The weld joint can not crack after being rolled by the stamping grinding tool (as shown in fig. 6), and the expansibility of a reliable welding process is realized. The modularized welding and cutting integrated jig can be used for rapidly carrying out welding switching of different products, and is small in equipment and low in price. The welding method is suitable for welding the stainless steel strips in the fields of stamping, secondary forming, secondary stamping, automatic assembly and the like. The production line only needs to be replaced by manual work of the stainless steel strip reel and the head of the replaced rear stainless steel strip reel is inserted into the inlet of the material channel, the manual work of re-feeding and production equipment shutdown are not needed, the problem that the manual replacement of the material strip reel is troublesome in operation is solved, and the waste material strips are spliced for reuse, so that the production efficiency can be greatly improved.
The invention is suitable for stamping, secondary forming and secondary stamping, and can realize the cutting and welding of the stainless steel strip in the fields of dense micro welding, automatic assembly and the like of the stainless steel strip. The production efficiency is improved for customers, the scrappage is reduced, and the method is the first choice of high-end stainless steel belts.
It will be readily understood by those skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention and that various modifications, combinations, substitutions, improvements, etc. may be made without departing from the spirit and principles of the invention.
Claims (10)
1. The utility model provides a continuous processing equipment in material area, includes feeding unit and punching press unit, its characterized in that: the feeding unit with be provided with the cutting welding unit between the punching press unit, the cutting welding unit is including fixed laser cutting welding subassembly and the displaceable material area locating component that sets up, laser cutting welding subassembly includes MOPA infrared laser and beam splitting system, the material area locating component is including the left tool assembly and the right tool assembly that are used for the location to wait to process the material area, left side tool assembly with all be connected with the two-dimensional workstation that is used for adjusting to process the material area in the horizontal plane on the right tool assembly, left side tool assembly with be provided with the rocker subassembly that is used for separating the material area after being cut between the right tool assembly.
2. Continuous processing equipment in material area, including first punching press unit and second punching press unit, its characterized in that: the cutting and welding device comprises a first stamping unit, a second stamping unit, a cutting and welding unit, a laser cutting and welding assembly and a displaceable material belt positioning assembly, wherein the cutting and welding unit comprises a laser cutting and welding assembly and a displaceable material belt positioning assembly, the laser cutting and welding assembly comprises a MOPA infrared laser and a light splitting system, the material belt positioning assembly comprises a left jig assembly and a right jig assembly, the left jig assembly and the right jig assembly are respectively connected with a two-dimensional workbench, the two-dimensional workbench is used for adjusting the position of a material belt to be processed in a horizontal plane, and a rocker assembly used for separating the material belt after being cut is arranged between the left jig assembly and the right jig assembly.
3. The web continuous processing apparatus according to claim 1 or 2, characterized in that: the working temperature of the MOPA infrared laser is 24-26 ℃, and the parameters of the MOPA infrared laser are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the factor of the beam quality M2 is less than or equal to 1.3, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ.
4. A continuous strip processing apparatus according to claim 3, wherein: the MOPA infrared laser comprises a cutting working mode and a welding working mode; in the cutting working mode, the laser parameters are that the wavelength is 800-1200nM, the average power is 50-500W, the peak power is more than 10KW, the beam quality M2 factor is less than or equal to 1.2, the minimum pulse width is 1ns, and the maximum frequency is 6000KHZ; in the welding working mode, the laser parameters are 800-1200nm wavelength, 50-500W average power, 50-500W peak power, and the M2 factor of the beam quality is less than or equal to 1.3.
5. The web continuous processing apparatus according to claim 1 or 2, characterized in that: the rocker assembly comprises a rocker and a rocker motor for driving the rocker to swing, a plane formed when the rocker rotates is perpendicular to a plane where the material belt to be processed is located, and the plane formed when the rocker rotates is intersected with the plane where the material belt to be processed is located.
6. The web continuous processing apparatus according to claim 1 or 2, characterized in that: the left jig assembly and the right jig assembly are provided with a plurality of integrally formed locating pins, the locating pins can prevent the material belt from deforming in the cutting and welding process, and the cutting and welding unit realizes laser positioning based on the locating pins.
7. The web continuous processing apparatus according to claim 1 or 2, characterized in that: the thickness of the material belt to be processed is more than or equal to 3mm.
8. The web continuous processing apparatus according to claim 1 or 2, characterized in that: the light splitting system comprises a collimator, a coaxial image acquisition device, a spectroscope, a temperature sensor, a laser galvanometer and a laser field lens.
9. The web continuous processing apparatus according to claim 1 or 2, characterized in that: and a feeding manipulator is arranged between the feeding unit and the stamping unit or between the feeding unit and the stamping unit.
10. A method for realizing continuous processing of a web based on the web continuous processing apparatus according to any one of claims 1 to 9, characterized in that: the object to be processed is a 3mm material belt, the optical system is adjusted to enable the laser focus to be used as a processing surface, and the power density of the laser spot is 10 4 ～10 6 The laser spot of the MOPA is 100-700um, and the method comprises the following steps:
s1: after the old coil is stamped by the stamping machine, reserving 0.5-1 meter of old coil steel strip as a tail, enabling equipment to reach a processing area, fixing a new coil at a feeding position, leveling by a plate straightening machine, and reserving 1-2 meters as a stub bar;
s2: aligning a material belt with the left material head thickness of 3mm with a positioning pin, and placing the material belt on a left jig assembly positioned on a two-dimensional workbench;
s3: the computer control board card and the laser cutting and welding integrated software are adopted, when the two-dimensional platform and the lifting platform are adjusted to test the strongest laser, the position with the smallest light spot is used as a focus, and the light spot of the laser is 100-700um;
s4: adjusting cutting coordinates in integrated software according to the size of the material belt, and moving the two-dimensional platform to a left cutting position to enable laser to precisely act on the processing position of the material belt on the left jig assembly;
s5: cutting patterns are made in integrated software according to the size of the material belt, MOPA laser parameters are set to be pulse cutting modes, the laser power is 200-500W, the laser pulse width is 1-5 ms, the frequency is 1-200 HZ, the laser times are 1-10 times, and a vibrating mirror is adjusted to enable the laser speed to be 1-500 mm/s;
s6: triggering cutting mode laser, completing cutting of a material belt on the left jig assembly under the effect of infrared laser radiation, enabling a rocker of the rocker assembly to advance to a cutting position, swinging rapidly after rotating for 45 degrees, removing waste materials after cutting the material belt, enabling the rocker of the rocker assembly to retreat to an original point, and enabling the material belt on the left jig assembly to retreat to a left feeding position;
s7: the material belt on the right jig assembly repeats S2-S5 to complete cutting of the material belt on the right jig assembly, and the material belt tail on the right jig assembly is stopped at a right cutting position;
s8: feeding the left cut material belt material head to a right cutting position to finish splicing of left and right material belts;
s9: according to the splicing sizes of the material belt on the left jig assembly and the material belt on the right jig assembly, making welding patterns in integrated software, setting MOPA laser parameters to be 200-500W, setting laser to be a continuous welding mode, setting the laser times to be 1 time, and adjusting a vibrating mirror to enable the laser speed to be 10-200 mm/s;
s10: switching the MOPA laser to a continuous welding mode, triggering laser, and carrying out laser welding on the material belt on the left jig assembly and the material belt on the right jig assembly under the effect of infrared laser radiation to realize high-quality fine welding of the material belt;
s11: closing the laser, cooling the material belt to form welding spots, keeping the two-dimensional platform in a static state in the laser emission process, and ensuring that the surfaces of the welding spots are free from splashing and the welding spots are consistent in size;
s12: when the material belt is multiple, the two-dimensional platform is moved to repeat S1-S10.
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| CN202310715082.7A CN116673611A (en) | 2023-06-16 | 2023-06-16 | Continuous processing equipment and method for material belt |
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