CN100482400C - Perforator for dropper belt controlling scan rate of vibrating mirror - Google Patents
Perforator for dropper belt controlling scan rate of vibrating mirror Download PDFInfo
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- CN100482400C CN100482400C CN 200610026868 CN200610026868A CN100482400C CN 100482400 C CN100482400 C CN 100482400C CN 200610026868 CN200610026868 CN 200610026868 CN 200610026868 A CN200610026868 A CN 200610026868A CN 100482400 C CN100482400 C CN 100482400C
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Abstract
The dropper belt perforator with controlled scan rate of the vibrating mirror includes one vibrating mirror scan device and one speed controlling device. The vibrating mirror scan device includes a CO2 laser, a beam expanding telescope infrared optical system, a vibrating mirror system comprising power source, motor and reflecting mirror, and an infrared optical system. The speed controlling device includes a driving belt, a servo motor, a speed measuring coder, a digital signal processor, a computer and a sync pulse turntable. The present invention has the benefit effect that the dropper belt speed the speed measuring coder measures and the speed the computer gives are compared to generate difference for controlling the angular speed of vibrating reflector so as to synchronize the light point motion of scan vibrating mirror with the dropper belt motion for perforating required holes and slots.
Description
Technical field
The present invention relates to a kind of laser drilling device, particularly a kind of perforator for dropper belt of controlling scan rate of vibrating mirror.
Background technology
At present, China to cheap, water outlet evenly, the demand of the anti-novel thin wall irrigation belt that stops up, is easy to installation administration is very big, and a lot of applications also being arranged at this city: urban green space everywhere, greenbelt, waste water control etc., popularizing application prospect is very wide.The processing of thin wall irrigation belt mainly is evenly punching on the thin-walled pipe racks, adopts traditional mechanical type joint-cutting equipment in the past, and efficient is very low.99237723.4 mould pipe laser micropore punch patent, the focus point that its described device is a laser instrument directly punches on the plastic tube of motion, shortcoming is that laser instrument is to open the short time, and utilization rate is low.Directly punch on the plastic tube of motion after with the laser reflect focalization 01274797.1 the laser drilling device patent of drip irrigation pipe, its described device are swing rollers, shortcoming is that the spacing of punching can not be regulated, and can not beat slit.01114374.6 thin material high-rate laser method, its described method are many speculums the laser reflect focalization that the prism rotation comes is punched on the plastic tube of motion, shortcoming is that the shape proportionality coefficient with interval of punching can not be regulated.
Summary of the invention
The objective of the invention is provides a kind of and can punch or slit in order to overcome the shortcoming of prior art, can adjustment hole or slit between spacing, a kind of perforator for dropper belt of controlling scan rate of vibrating mirror that can independent regulation slit length.
Technical scheme of the present invention is: a kind of perforator for dropper belt of controlling scan rate of vibrating mirror, be characterized in that it comprises vibration mirror scanning device and speed control unit: the vibration mirror scanning device comprises: CO
2Laser instrument, beam expanding telescope infrared optical system, the galvanometer system of forming by galvanometer power supply, galvanometer motor and the mirror surface that adheres to thereof, the infrared optical system of the saturating galvanometer of f-θ, CO
2The laser beam that laser instrument sends, expand bundle through the beam expanding telescope infrared optical system after, be mapped on the mirror surface of galvanometer system, focus on, scan on the dropper band that places on the driving belt after reflecting, scan the infrared optical system of f-θ lens downwards;
Speed control unit comprises: driving belt, servomotor, speed measuring coder, digital signal processor, computer, described speed measuring coder places in the servomotor rotating shaft, measure driving belt speed, also be equipped with a perforate rotating disk in the described servomotor rotating shaft, the output of rotating plate photoelectricity pulse is connected with the shaping delay circuit with Photoelectric Detection, described computer is connected with wide frequency ranges linear saw-tooth wave circuit with pulse width modulation circuit by digital signal processor, pulse width modulation circuit is connected with the laser power output circuit, and wide frequency ranges linear saw-tooth wave circuit is connected with galvanometer deflection scanning circuit;
Record the rate signal of driving belt and be input to digital signal processor and compare by being contained in speed measuring coder on the belt transmission servomotor by the given rate signal of computer, its difference signal is defeated by pulse width modulation circuit and wide frequency ranges linear saw-tooth wave circuit by computer interface, the pulsewidth modulation that the control saw-toothed oscillator produces wide frequency ranges fine rule sawtooth waveforms and wide region, the sweep speed Synchronization Control of realization dropper tape running speed and galvanometer.
The invention has the beneficial effects as follows, movement velocity 2 signals that record the dropper band by speed measuring coder are after machine is handled computing as calculated, the luminous point movement velocity that control vibration mirror reflected specular angle speed, makes vibration mirror reflected minute surface laser light reflected focus on the dropper band is identical with the movement velocity of dropper band, the synchronized movement of luminous point motion and dropper band, thereby get circular hole, if change vibration mirror reflected specular angle speed on a small quantity, just can get the slit of Len req.When adjusting the angular speed of mirror surface counter-rotation, just can adjust between the Kong Yukong or the spacing between slit and the slit.
Description of drawings
Fig. 1 is online dropper band laser drilling device principle schematic;
Fig. 2 is the speed control unit theory diagram;
Fig. 3 is Photoelectric Detection and shaping delay circuit schematic diagram;
Fig. 4 is pulse width modulation circuit and wide frequency ranges linear saw-tooth wave circuit theory diagrams.
The specific embodiment
By Fig. 1, shown in Figure 2, a kind of perforator for dropper belt of controlling scan rate of vibrating mirror is characterized in, it comprises vibration mirror scanning device and speed control unit:
The vibration mirror scanning device comprises: CO
2Laser instrument 1, beam expanding telescope infrared optical system 3, the galvanometer system of forming by galvanometer power supply 10, galvanometer motor 11 and the mirror surface 4 that adheres to thereof, the infrared optical system 5 of the saturating galvanometer of f-θ, CO
2The laser beam 2 that laser instrument 1 sends, behind beam expanding telescope infrared optical system 3 expansion bundles, be mapped on the mirror surface 4 of galvanometer system, focus on, scan the dropper band 14 that place driving belt 6 on after reflecting, scan the infrared optical system 5 of f-θ lens downwards, eyeletting 12, and the control interval will get next aperture 13.
Speed control unit comprises: driving belt 6, servomotor 15, speed measuring coder 7, digital signal processor 8, computer 9, described speed measuring coder places in the servomotor rotating shaft, measure driving belt speed, also be equipped with a perforate rotating disk in the described servomotor rotating shaft, the output of rotating plate photoelectricity pulse is connected with the shaping delay circuit with Photoelectric Detection, described computer 9 is connected with wide frequency ranges linear saw-tooth wave circuit with pulse width modulation circuit by computer interface, pulse width modulation circuit is connected with the laser power output circuit, and wide frequency ranges linear saw-tooth wave circuit is connected with galvanometer deflection scanning circuit; Record the rate signal of driving belt 6 and be input to digital signal processor 8 and compare by being contained in speed measuring coder 7 on the belt transmission servomotor 15 by computer 9 given rate signals, its difference signal is defeated by pulse width modulation circuit and wide frequency ranges linear saw-tooth wave circuit by computer interface, the pulsewidth modulation that the control saw-toothed oscillator produces wide frequency ranges fine rule sawtooth waveforms and wide region, the sweep speed Synchronization Control of realization dropper tape running speed and galvanometer.
Described perforate rotating disk 16 is a photoelectric turnplate, be sidelong in one of institute's perforate and put photodiode, photodiode is connected with the shaping delay circuit with Photoelectric Detection, and the photoelectric pulse signal that belt transmission servomotor 15 drive rotating disks 16 1 transfer sends the synchronizing signal of online dropper band laser drilling device through Photoelectric Detection and shaping delay circuit input control computer 9.
By shown in Figure 3, described Photoelectric Detection and shaping delay circuit comprise the resistance R 1 by photodiode BG and series connection thereof, capacitor C 1, divider resistance R2, R3, and the Photoelectric Detection amplifying circuit of shunt capacitance capacitor C 2 and triode VT1 composition reaches by resistance R 7, capacitor C 6, C7, the shaping delay circuit that Schmidt trigger IC1 forms, the change in resistance of photodiode is through divider resistance R2, R3 is converted to the variation of voltage, this voltage signal is after triode VT1 amplifies, be input to Schmidt trigger IC1, utilizing its peculiar hysteresis characteristic to be used for shaping pulse postpones, pulse signal after delayed is sent into computer 9, and control computer 9 sends the synchronizing signal of online dropper band laser drilling device.
By shown in Figure 4, the pulse width modulation circuit circuit is formed by connecting by diode D2 and digital regulation resistance and timer IC2 element, produce an adjustable voltage by computer by digital potentiometer and be input among the timer IC2, producing an adjustability coefficients is 1% to 99% wide model pulse-width signal control laser power size.Described wide frequency ranges linear saw-tooth wave circuit by sawtooth waveforms by monostable flipflop IC3, with triode VT2, resistance R 10, diode D4, the constant-current charge circuit that D5 forms is formed by connecting, monostable flipflop IC3 output is connected with the triode VT2 collection utmost point, resistance R 10 is the emitter resistance of triode VT2, diode D4, D5 and resistance R 11 are in series, the base stage of triode VT2 is connected with the common junction of resistance R 11 with diode D5, the collection utmost point of triode VT2 is serially connected with capacitor C 10 and diode D3, output of the collection utmost point and the triode VT3 of triode VT2, the connection carrying out of VT4 compound emitter follower impedance conversion, triode VT3, the output of VT4 compound emitter follower is connected with galvanometer deflection scanning circuit, and the linear saw-tooth wave signal of output wide frequency range goes to control the sweep speed of galvanometer.
The present invention is through testing:
Punch on the dropper band, when dropper band transfer rate 900mm/ branch, when the galvanometer deflection frequency was 3.2Hz, the aperture was: 0.3mm.Joint-cutting on the dropper band, when dropper band transfer rate 900mm/ branch, when the galvanometer deflection frequency was 1.96Hz, joint-cutting length was: 3.5mm.
Claims (5)
1. a perforator for dropper belt of controlling scan rate of vibrating mirror is characterized in that, it comprises vibration mirror scanning device and speed control unit:
The vibration mirror scanning device comprises: CO
2Laser instrument (1), beam expanding telescope infrared optical system (3), the galvanometer system of forming by galvanometer power supply (10), galvanometer motor (11) and mirror surface (4), the infrared optical system (5) of f-θ lens, CO
2The laser beam (2) that laser instrument (1) sends, behind beam expanding telescope infrared optical system (3) expansion bundle, be mapped on the mirror surface (4) of galvanometer system, focus on, scan the dropper band (14) that place driving belt (6) on after reflecting, scan the infrared optical system (5) of f-θ lens downwards;
Speed control unit comprises:
Described driving belt (6), servomotor (15), speed measuring coder (7), digital signal processor (8), computer (9), described speed measuring coder (7) places in the servomotor rotating shaft, measure driving belt (6) speed, also be equipped with a perforate rotating disk (16) in the described servomotor rotating shaft (15), the photoimpact output of perforate rotating disk is connected with Photoelectric Detection shaping delay circuit, described computer (9) is connected with wide frequency ranges linear saw-tooth wave circuit with pulse width modulation circuit respectively by computer interface, pulse width modulation circuit is connected with the laser power output circuit, and wide frequency ranges linear saw-tooth wave circuit is connected with galvanometer deflection scanning circuit; Record the rate signal of driving belt (6) and be input to digital signal processor (8) and compare by being contained in speed measuring coder (7) on the servomotor (15) by the given rate signal of computer (9), its difference signal is defeated by pulse width modulation circuit and wide frequency ranges linear saw-tooth wave circuit by computer interface, control described sawtooth-wave circuit and produce wide frequency ranges linear saw-tooth wave signal, realize the sweep speed Synchronization Control of dropper tape running speed and galvanometer.
2. a kind of perforator for dropper belt of controlling scan rate of vibrating mirror according to claim 1, it is characterized in that, described perforate rotating disk (16) is a photoelectric turnplate, be sidelong at described perforate rotating disk (16) and put photodiode, photodiode is connected with Photoelectric Detection shaping delay circuit, and the photoelectric pulse signal that the described rotating disk one of servomotor (15) drive transfers sends the synchronizing signal of online dropper band laser drilling device through Photoelectric Detection shaping delay circuit input control computer (9).
3. a kind of perforator for dropper belt of controlling scan rate of vibrating mirror according to claim 1, it is characterized in that, described pulse width modulation circuit is formed by connecting by second diode (D2) and digital regulation resistance and timer (IC2), produce an adjustable voltage by computer by digital potentiometer and be input in the timer (IC2), producing an adjustability coefficients is 1% to 99% wide region pulse-width signal control laser power size.
4. a kind of perforator for dropper belt of controlling scan rate of vibrating mirror according to claim 1, it is characterized in that, described wide frequency ranges linear saw-tooth wave circuit is by monostable flipflop (IC3) with by second triode (VT2), emitter resistance (R10), the 4th diode (D4), the constant-current charge circuit that the 5th diode (D5) is formed is formed by connecting, monostable flipflop (IC3) output is connected with second triode (VT2) the collection utmost point, the 4th diode (D4), the 5th diode (D5) and divider resistance (R11) are in series, the base stage of second triode (VT2) is connected with the negative pole of the 5th diode (D5), the collection utmost point of second triode (VT2) is serially connected with the tenth electric capacity (C10) and the 3rd diode (D3), the output of the collection utmost point and the 3rd triode (VT3) of second triode (VT2), compound emitter follower connection the carrying out impedance conversion that the 4th triode (VT4) is formed, the 3rd triode (VT3), the compound emitter follower output that the 4th triode (VT4) is formed is connected with galvanometer deflection scanning circuit, exports the sweep speed that described wide frequency ranges linear saw-tooth wave signal removes to control galvanometer.
5. a kind of perforator for dropper belt of controlling scan rate of vibrating mirror according to claim 1, it is characterized in that, described Photoelectric Detection shaping delay circuit is formed by connecting by Photoelectric Detection amplifying circuit and shaping delay circuit, the Photoelectric Detection amplifying circuit is by first resistance (R1) of photodiode (BG) and series connection with it, first electric capacity (C1), two divider resistance (R2, R3), shunt capacitance (C2) and first triode (VT1) are formed by connecting, the shaping delay circuit is by the 7th resistance (R7), the 6th electric capacity (C6), the 7th electric capacity (C7), Schmidt trigger (IC1) is formed by connecting, the change in resistance of photodiode is through two divider resistance (R2, R3) be converted to the signal of the variation of voltage, this voltage signal is after first triode (VT1) amplifies, be input to Schmidt trigger (IC1), utilizing its peculiar hysteresis characteristic to be used for shaping pulse postpones, pulse signal after delayed is sent into computer (9), and control computer (9) sends the synchronizing signal of online dropper band laser drilling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026868 CN100482400C (en) | 2006-05-25 | 2006-05-25 | Perforator for dropper belt controlling scan rate of vibrating mirror |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026868 CN100482400C (en) | 2006-05-25 | 2006-05-25 | Perforator for dropper belt controlling scan rate of vibrating mirror |
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| Publication Number | Publication Date |
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| CN1857845A CN1857845A (en) | 2006-11-08 |
| CN100482400C true CN100482400C (en) | 2009-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610026868 Expired - Fee Related CN100482400C (en) | 2006-05-25 | 2006-05-25 | Perforator for dropper belt controlling scan rate of vibrating mirror |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333771B (en) * | 2008-07-29 | 2011-06-15 | 瑞安市博业激光应用技术有限公司 | Method of preparing fibre composite sheet |
| KR101346296B1 (en) * | 2012-01-20 | 2014-01-02 | 참엔지니어링(주) | Laser processing apparatus and method |
| CN103234953B (en) * | 2013-04-16 | 2015-03-11 | 南京诺威尔光电系统有限公司 | Laser scanning thermal wave tomography system and method |
| CN103394805B (en) * | 2013-08-05 | 2016-09-14 | 大族激光科技产业集团股份有限公司 | Cut perforating device and cutting and boring method |
| CN104459534B (en) * | 2013-09-16 | 2017-12-01 | 大族激光科技产业集团股份有限公司 | A kind of detection method and device of the galvanometer motor linearity |
| CN106001942A (en) * | 2016-06-08 | 2016-10-12 | 青岛易科锐自动化技术有限公司 | Laser perforating device and plastic film and plastic label processing equipment |
| CN112655425A (en) * | 2020-12-09 | 2021-04-16 | 南京农业大学 | Control system and control method for active hole pressing roller of vegetable seedling raising assembly line |
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- 2006-05-25 CN CN 200610026868 patent/CN100482400C/en not_active Expired - Fee Related
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Assignee: Hangzhou Guangyunda Photoelectric Technology Co.,Ltd. Assignor: Laser Technology Inst. of Shanghai Contract fulfillment period: 2009.9.1 to 2013.8.31 contract change Contract record no.: 2009330002640 Denomination of invention: Perforator for dropper belt controlling scan rate of vibrating mirror Granted publication date: 20090429 License type: Exclusive license Record date: 20091026 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.9.1 TO 2013.8.31; CHANGE OF CONTRACT Name of requester: HANGZHOU GUANGYUNDA OPTOELECTRONICS TECHNOLOGY CO. Effective date: 20091026 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20150525 |
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| EXPY | Termination of patent right or utility model |