CN101007455A - Laser method and device for carving print wheel - Google Patents
Laser method and device for carving print wheel Download PDFInfo
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- CN101007455A CN101007455A CN 200610023573 CN200610023573A CN101007455A CN 101007455 A CN101007455 A CN 101007455A CN 200610023573 CN200610023573 CN 200610023573 CN 200610023573 A CN200610023573 A CN 200610023573A CN 101007455 A CN101007455 A CN 101007455A
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Abstract
本发明公开了一种激光雕刻印字轮的方法及装置，在主控制计算机上设定和输入主控参数；计算机发出脉冲序列与主轴上的旋转编码器输出的角度位置脉冲进行相位比较，控制主轴电机的转速，使得安装在主轴上的印字轮匀速旋转；主控计算机控制直线进给装置带动印字轮与激光束产生缓慢的相对位移；使得激光束在印字轮的圆柱表面形成螺旋型扫描轨迹，当主轴转动一周的同时，其位移距离等于欲雕刻字型一个像素的当量；主控制计算机产生的字型编码信号与由旋转编码器产生准确的角度位置信号同步，控制激光发生器输出激光束，在印字轮的圆柱表面进行雕刻。该装置包括印字轮匀速旋转装置，激光发生器及激光束自动调焦控制装置，主控制计算机以及电机驱动器。
The invention discloses a method and device for laser engraving a printing wheel. The main control parameters are set and input on the main control computer; the pulse sequence sent by the computer is compared with the angular position pulse output by the rotary encoder on the main shaft to control the main shaft. The rotation speed of the motor makes the printing wheel installed on the main shaft rotate at a constant speed; the main control computer controls the linear feed device to drive the printing wheel and the laser beam to produce a slow relative displacement; the laser beam forms a spiral scanning track on the cylindrical surface of the printing wheel, When the main shaft rotates one circle, its displacement distance is equal to the equivalent of one pixel of the font to be engraved; the font encoding signal generated by the main control computer is synchronized with the accurate angular position signal generated by the rotary encoder, and the laser generator is controlled to output the laser beam. Engraving on the cylindrical surface of the printing wheel. The device includes a constant-speed rotating device for a printing wheel, a laser generator and a laser beam automatic focusing control device, a main control computer and a motor driver.
Description
Technical field
The present invention relates to a kind of manufacturing technology of laser engraving type wheel, especially a kind of preparation method and device thereof with the laser engraving type wheel.
Background technology
Type wheel is the main tool that is used in electric wire surface printing product sign, can be used for the printing of drug capsules surface sign equally.Traditional type wheel manufacture craft is the mask exposure etch, the disadvantage of this method be chemical reagent such as the photosensitive material that uses in the manufacturing process, corrosive agent can to environment pollute and also fabrication cycle long.
At present, a kind of laser type wheel engraving machine product is arranged on the market, use the two-dimension optical scanning galvanometer as the deflector of laser beam, the method for driven by motor type wheel rotation.As Chinese invention patent application number CN200410021754.1, applying date 2004.01.18, open day 2004.12.29, the method of a kind of Laser Marker of Cambered Surface and processing type wheel thereof is disclosed, the motor of this machine and chuck are installed on the two-dimentional work bench, and two-dimentional work bench makes laser beam focus on the workpiece machined surface; Two-dimensional scan galvanometer system directions X is parallel with the chuck rotating shaft; Workpiece spindle is consistent with chuck axis, and the laser emergent shaft is vertical with the bus that surface of the work intersects with it.Computer is connected with the 2-D vibration mirror system with driver.When using this machine: make various image, text and data files and storage on computers, start the marking program, computer control driver, motor rotation and pause; The two-dimensional scan galvanometer system is using laser engraving on the lettering wheel blank in required picture and text dot matrix under the control of computer marking data file.
This method uses optical scan vibration lens to make laser behind character of engraving on the type wheel surface, and the driven by motor type wheel turns over an angle, need wait for a period of time, and carves another character again after stablizing, and goes round and begins again.Owing to breath motion between the restriction that is subjected to the frequency response of scanning galvanometer, driven by motor type wheel, can cause the appearance of oversize unfavorable factor of process-cycle, directly have influence on working (machining) efficiency.
Summary of the invention
The present invention will overcome weak point and the defective that the preparation method of existing laser engraving type wheel and device exist, and providing a kind of can shorten the process-cycle, again the method and the device of the laser engraving type wheel that can not pollute environment.
Method of the present invention is achieved in that
1. on the main control computer, set and import main contral parameter and open the font file that to carve;
2. main control computer sends pulse train, carries out bit comparison mutually with the angle position pulse that the rotary encoder on the main shaft is exported, and the rotating speed of control spindle motor makes the type wheel that is installed on the main shaft at the uniform velocity rotate;
3. main control computer control straight-line feed device drive type wheel and laser beam produce relative displacement slowly; Make laser beam form screw type scanning track at the periphery of type wheel, when main shaft rotated a week, its shift length equaled the equivalent of a pixel of desire engraving font;
The font encoding signal that produces of main control computer with produce by rotary encoder that angle position signal is synchronous accurately, control laser generator outgoing laser beam is carved at the periphery of type wheel.
Apparatus of the present invention comprise at the uniform velocity whirligig of type wheel, laser generator and laser beam automatic focusing control device, main control computer and motor driver.
Wherein, type wheel at the uniform velocity whirligig by bearing housing, type wheel, spindle drive motor, encoder support, rotary encoder is formed, on the feeding planker of straight-line feed device, be installed with bearing housing and encoder support, the defeated main shaft of bearing housing is parallel with the direction of motion of straight-line feed device, between bearing housing and the encoder support spindle drive motor of fixedlying connected with bearing housing is installed, be fixedly connected with type wheel on the output main shaft of bearing housing, the rear output shaft of spindle drive motor is connected with rotary encoder on being fixed on the encoder support;
Laser beam automatic focusing control device is by drive motors, focusing objective len, the straight-line feed device constitutes, straight-line feed device upper end is installed with drive motors, be fixedly connected with focusing objective len on the vertical moving carriage of straight-line feed device, vertical through the laser beam of focusing control device output with the periphery of type wheel;
The control signal output of main control computer is connected with the motor driver input with laser generator respectively, the motor driver output connects spindle drive motor respectively, straight-line feed drive motors and drive motors, the signal input part of main control computer connects rotary encoder, be used for font encoding signal that the main control computer produces and produce by rotary encoder that angle position signal is synchronous accurately, remove to control the laser generator outgoing laser beam.
The present invention compares with present type wheel preparation method has following feature: use focussed laser beam to carve at the type wheel cylindrical surface of at the uniform velocity rotation; When type wheel at the uniform velocity turns over a circle, the straight-line feed device is under the control of main control computer, make and carve the distance of carving the diameter of pixel that relatively moves uniformly between laser beam and the type wheel, laser beam forms spiral yarn shaped track while scan on the type wheel periphery like this; Total movement control realizes high accuracy type wheel engraving all by computer controlled automatic, precise closed-loop SERVO CONTROL.
Advantage of the present invention is:
1. adopt the autotracking focusing technology, make focusing objective len follow the periphery motion of type wheel, keep focal length constant, can overcome since main shaft when rotated circular runout and because caused by factors such as type wheel mismachining tolerance are lost burnt problem.Guarantee that laser beam correctly focuses on the periphery of type wheel.
2. because in whole engraving process, breath motion and moving back and forth between not having is uniform circular motion or linear uniform motion all.Therefore, finally can reach and carve out meticulous font at high speed at the periphery of type wheel.For example: the meticulous font of engraving per inch 800 points (0.03175 millimeter/point), main shaft at the uniform velocity rotates with the speed that change each second 1, and the relative displacement speed of type wheel and laser beam is 0.03175 mm/second simultaneously.Font height of engraving is that 3.175 millimeters type wheel only needed for 100 seconds (being less than 2 minutes) like this.
Description of drawings
Fig. 1 is a structural upright schematic diagram of the present invention;
Fig. 2 is that laser beam forms screw type scanning track schematic diagram at the periphery of type wheel.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
Laser type wheel engraving machine of the present invention and comprise: by bearing housing 11, be installed in type wheel 6, spindle drive motor 7 on the main shaft 10, be installed at the uniform velocity whirligig 1 of type wheel that the rotary encoder 8 on the encoder support 9 forms with the method for the carving print wheel of this laser type wheel engraving machine; At the uniform velocity the encoder support 9 in the whirligig 1, mobile platform, main shaft 10 that bearing housing 11 is installed in straight-line feed device 1 respectively are parallel with the direction of motion of straight-line feed device 1 with type wheel; The synchronous font information of angle position signal that the laser beam 17 of laser generator 2 outputs is subjected to export with rotary encoder 8 is controlled; Laser beam automatic focusing device 13 control focusing objective lens 14 make laser beam 17 focus on the periphery of type wheel 6, and vertical with the periphery of type wheel 6.Therefore, the method for carving print wheel is as follows:
(1) on main control computer 4, sets and import main contral parameter and open the font file that to carve simultaneously; Main control computer 4 should be exported font information, also according to the parameter of setting, controls each motor driver respectively, drives corresponding motor coordination running;
(2) pulse train sent of main control computer 4 is carried out bit comparison mutually with the angle position pulse of rotary encoder 8 outputs on the main shaft 10, and the rotating speed of control spindle motor 7 makes the type wheel 6 that is installed on the main shaft 10 at the uniform velocity rotate;
(3) main control computer 4 control straight-line feed devices 1 drive type wheel 6 and produce relative displacement slowly with laser beam 17 simultaneously, make laser beam 17 form screw type scanning track at the periphery of type wheel 6, when main shaft 10 rotated a week, its shift length equaled the equivalent of a pixel of desire engraving font.
(4) the font encoding signal that produces of main control computer 4 with produce by rotary encoder 8 that angle position signal is synchronous accurately, control laser generator 2 outgoing laser beams 17 are carved at the periphery of type wheel 6.
As shown in Figure 1, type wheel carving device of the present invention comprises: type wheel is whirligig 1 at the uniform velocity, laser generator 2 and laser beam automatic focusing control device 13, main control computer 4 and motor driver 3.
Type wheel at the uniform velocity whirligig 1 by bearing housing 11, type wheel 6, spindle drive motor 7, encoder support 9, rotary encoder 8 is formed, on the feeding planker of straight-line feed device 5, be installed with bearing housing 11 and encoder support 9, the main shaft 10 of bearing housing 11 is parallel with the direction of motion of straight-line feed device 5, the spindle drive motor 7 of fixedlying connected with bearing housing 11 is installed between bearing housing 11 and the encoder support 9, fixedly connected type wheel 6 on the output main shaft 10 of bearing housing 11, the rear output shaft of spindle drive motor 7 is connected with rotary encoder 8 on being fixed on encoder support 9.
Laser beam automatic focusing control device 13 is by drive motors 15, focusing objective len 14, and straight-line feed device 16 constitutes.Straight-line feed device 16 upper ends are installed with drive motors 15, are fixedly connected with focusing objective len 14 on the vertical moving carriage of straight-line feed device 16, and are vertical with the periphery of type wheel 6 through the laser beam 17 of focusing control device 13 outputs;
The control signal output of main control computer 4 is connected with motor driver 3 inputs with laser generator 2 respectively, motor driver 3 outputs connect spindle drive motor 7 respectively, straight-line feed drive motors 12 and drive motors 15, the signal input part of main control computer 4 connects rotary encoder 8, be used for font encoding signal that main control computer 4 produces and produce by rotary encoder 8 that angle position signal is synchronous accurately, remove to control laser generator 2 outgoing laser beams 17.
Type wheel whirligig 1 is at the uniform velocity uniform rotation under the rotating speed that main control computer 4 is set under the driving of accessory drive 3 of type wheel; When type wheel whirligig 1 at the uniform velocity turns over a circle, straight-line feed device 5 makes engraving laser generator 2 and type wheel at the uniform velocity rotate the distance of carving the diameter of pixel that relatively moves uniformly between the accessory drive 1 under the control of main control computer 3.So, laser beam forms spiral yarn shaped track while scan (shown in Figure 2) on the type wheel periphery.
When 1 rotation of type wheel whirligig, the position signalling of rotary encoder 8 when main control computer 4 both sends, main control computer 4 will be anticipated real-time the delivering to of finishing of font encoding signal and be carved laser generator 2, make it send laser 17 engraving pulses, allocation is carved really on type wheel.The font height of carving when desire is a n pixel, as long as type wheel whirligig 1 rotation n encloses, has just finished the engraving process of whole type wheel so.
Shown in Figure 2, straight line 18 is evolutes of closed circle on the type wheel periphery; Oblique line 20 is exactly the evolute of the screw type scanning track of one group of periphery formation, and their are the distance of engraving pixel 19 diameters at interval.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610023573 CN101007455A (en) | 2006-01-24 | 2006-01-24 | Laser method and device for carving print wheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610023573 CN101007455A (en) | 2006-01-24 | 2006-01-24 | Laser method and device for carving print wheel |
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| CN101007455A true CN101007455A (en) | 2007-08-01 |
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| CN 200610023573 Pending CN101007455A (en) | 2006-01-24 | 2006-01-24 | Laser method and device for carving print wheel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2239144A2 (en) | 2007-12-31 | 2010-10-13 | On-Laser Systems & Applications, S. L. | Method and arrangement for rotational marking |
| CN102198758A (en) * | 2010-03-24 | 2011-09-28 | 苏州楚天光电设备有限公司 | Embedded network-controlled laser marking system |
| CN102229279A (en) * | 2011-04-15 | 2011-11-02 | 北京罗赛尔科技有限公司 | Method for implementing multilevel high-accuracy sleeve-carving platemaking of special roller |
| CN104608467A (en) * | 2014-12-05 | 2015-05-13 | 丹东金丸集团有限公司 | System and method for synchronously controlling print head and roller in nanometer computer to plate |
| CN107617822A (en) * | 2017-09-14 | 2018-01-23 | 浙江工业大学 | A kind of process equipment and its impeller for super hydrophobic surface impeller |
| CN110682004A (en) * | 2019-09-30 | 2020-01-14 | 贵州航天电子科技有限公司 | Laser lettering process for epoxy resin high-frequency cable end |
| CN112605527A (en) * | 2021-01-13 | 2021-04-06 | 成都尹奎慧科技有限公司 | Equipment capable of automatically engraving on cylindrical surface |
-
2006
- 2006-01-24 CN CN 200610023573 patent/CN101007455A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2239144A2 (en) | 2007-12-31 | 2010-10-13 | On-Laser Systems & Applications, S. L. | Method and arrangement for rotational marking |
| EP2239144B1 (en) | 2007-12-31 | 2014-10-22 | On-Laser Systems & Applications, S. L. | Method and arrangement for rotational marking |
| CN102198758A (en) * | 2010-03-24 | 2011-09-28 | 苏州楚天光电设备有限公司 | Embedded network-controlled laser marking system |
| CN102229279A (en) * | 2011-04-15 | 2011-11-02 | 北京罗赛尔科技有限公司 | Method for implementing multilevel high-accuracy sleeve-carving platemaking of special roller |
| CN104608467A (en) * | 2014-12-05 | 2015-05-13 | 丹东金丸集团有限公司 | System and method for synchronously controlling print head and roller in nanometer computer to plate |
| CN104608467B (en) * | 2014-12-05 | 2017-08-18 | 丹东金丸集团有限公司 | Printhead and roller synchronisation control means in nanometer direct plate maker |
| CN107617822A (en) * | 2017-09-14 | 2018-01-23 | 浙江工业大学 | A kind of process equipment and its impeller for super hydrophobic surface impeller |
| CN110682004A (en) * | 2019-09-30 | 2020-01-14 | 贵州航天电子科技有限公司 | Laser lettering process for epoxy resin high-frequency cable end |
| CN112605527A (en) * | 2021-01-13 | 2021-04-06 | 成都尹奎慧科技有限公司 | Equipment capable of automatically engraving on cylindrical surface |
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