Method and systems of high-speed and high-power laser engraving

FIELD: process engineering.

SUBSTANCE: invention relates to engraving of images by output laser signal applied to material. Output laser signal is displaced relative to material at high speed exceeding 10 m/s to engrave at constant power of output laser signal exceeding 500 W. Proposed engraving system comprises laser, system of mirrors for displacement laser output signal that allows control over laser signal power and speed. Control device allows computation capacity making 10000 pixels a second.

EFFECT: engraving on construction components.

39 cl, 2 dwg, 3 tbl

 

Cross references to related applications

This application claims priority based on provisional application 60/943943317, filed June 12, 2007, and 60/952431, filed July 27, 2007, the contents of which are fully incorporated herein by reference.

The technical field to which the invention relates

The invention generally relates to a method and system based on the use of laser for engraving (scribing) graphics on materials, mainly construction materials, with high-speed processing, suitable for the production on an industrial scale.

The level of technology

Products for housing construction and industrial purposes include building products internal purposes, such as drywall, countertops, and fittings for bathrooms (bathroom fixtures, kitchen cabinets, interior doors, flooring, wall panels, ceiling tiles and construction products outdoor applications, such as cladding, cladding, trim, fences, Windows and exterior doors. These products are made from plaster, vinyl, acrylic, fiberboard, high density tempered glass, annealed glass, composite resins, various laminates, veneer, low profile carpet tiles, fiberglass, ceramic, granite, plastic and wood place is ekovich composite materials and diverse other materials. Often there is a desire to provide such details decorative trim with different images printed on the materials.

Traditional methods of printing, such as embossing or ink jet printing, often create an unattractive appearance. Other processes, such as sandblasting and cladding veneer, have a disadvantage of high cost.

It would seem that laser etching or scribing on the construction products could offer an attractive tool for decorating building products. However, lasers in industrial production has not been used for decoration of building products in large-scale production economically attractive characteristics. I believe that at least two factors explain why not engrave building products using laser-scale mass production. These factors are relatively low scanning speed and relatively low power industrial systems laser engraving.

As for the speed of scanning, the laser beam can be controlled using linear induction motors or using delivery systems with the screw copier on the coordinate table for standard speed laser scanning, usually sostavlyajushie is from 0.5 to 3.0 feet per second. This method is customary in the field of laser cutting, which uses lasers 1000-10000 W for cutting steel, for example. Such laser systems with power 1000-10000 W made by Amada®, Triumph, Rofin®, Fanuc®and Panasonic®.

The speed of these traditional, driven by linear induction motors laser systems would require several minutes to complete treatment, only to engrave square foot (0,09 sq m) of material. For example, in a recent advertising advanced laser systems, Vyteck L-star, stated that the system is "the world's fastest laser system for industries in manufacturing stone, tile and glass. The advertisement further stated that "L-Star wins the competition with speeds engraving of up to 150 inches per second" or 3.8 meters per second.

The inventors recognize, however, that the velocities obtained using the traditional system with a linear induction motor, does not allow for efficient processing of building products engraving, because it will take a lot of time to decorate the base. It is recognized that the laser type linear induction motor will need per square foot for a few minutes to engrave graphics on construction materials. For example, at this speed it is recognized that the needs of the tsya about 6 minutes, to engrave complex graphic pattern on a square foot of medium density fiberboard, the usual basis for building materials. Thus, the unit cost would be too high to economically handle such building materials on a massive scale. Low speed linear induction motor, apparently, would not be practical or economical way of printing images using a laser to trim the wood composite materials, flooring, products of wood composite materials, or any other conventional basis for building products in large volumes. It would take a few minutes per square foot, to be applied using laser complicated pattern wood patterns per square foot of composite wood material or plastic lumber using the existing technology of laser engraving. The inventors believe that this is why such building materials not engrave with a laser in large quantities.

In an alternative embodiment, the mirror is driven by using a galvanometer (or galvanical for short), can be used to control movement of the laser beam on the material surface. Galvanical move with the control signal, and e is about moving accordingly causes the output laser beam, which should move the material along the desired trajectory, providing for the creation of the picture. This method is widely used in laser engraving a variety of materials including steel, wood and plastics, using lasers with power 50-250 watts.

Laser system driven by galvanically, are used in relatively small scale (mainly less than an area of 61 square∙cm (or two feet) and at low speeds (less than engraving speed is 5 meters per second) and low power (typically between 50-250 watts). These systems mainly produce the engraving on products such as wine glasses, a small brass ferrule, small wooden sticks or small slabs of granite. Unlike lasers, controlled linear induction motors, systems, managed galvanically, not enough laser power to handle relatively large parts. As in the case of laser-driven linear motor, systems with galvanically is too slow to economically manufacture of building products.

The invention

The first aspect of the invention is directed to a method of engraving (scribing graphics on the material in which the output signal of the Azer is applied to the material. The output signal of the laser is moved relative to the material at high speed, more than 10 meters per second, while the laser signal has more power, more than 500 watts to engrave a graphic image on the surface of the material.

The second aspect of the invention discloses a system for engraving a graphic image on the material. The system includes a laser operating with high signal power greater than 500 W, and a system of mirrors to move the laser signal with a rate of more than 10 meters per second to engrave a graphic image on the surface of the material.

The third aspect of the invention is directed to a module for processing graphics, which efficiently handles the graphical image to control the positioning of the mirrors in order to engrave the graphical image and to control the laser power.

Additional aspects of the invention, including additional ways, more systems, devices, apparatuses, articles, and more, will be apparent after consideration of the accompanying drawings and reading the detailed description below.

A brief description of some types of figures

The accompanying drawings are included in the description and be part of it. The drawings together with the General description given above and the detailed description is receiving is given as an example variant (variants) the implementation of the system and method (methods), below, serve to explain the principles of the invention. In these drawings:

Fig. 1 is a schematic view of a system for engraving a graphic image onto a material according to one variant embodiment of the invention;

Figure 2 is a schematic view of a system for engraving a graphic image on the material according to another variant embodiment of the invention.

A detailed description is given as an example variant (variants) of the invention and is shown as an example of the way (way)

Now link will detail made in the above example variant (variants) of the invention and the method (methods) according to the invention, as they are illustrated in the accompanying drawings, in which similar reference positions denoted by similar or corresponding parts in all the drawings. It should be noted, however, that the invention in its broadest aspects is not limited to the specific details presented by the devices and methods, and illustrative examples shown and described in this section for detailed description.

The inventors do not know of anyone who would suggest to this invention, high-speed processing engraving with lasers high power. The inventors have determined that the lasers using high power (more than 500 watts) and high speed (more than 10 meters per second)would be a great improvement on the traditional systems and commercially justifiable way to engrave images and pictures on the basics of building products and other materials in mass production to achieve low unit costs, and thus a satisfactory economic aspects.

In particular, given as examples, embodiments of the invention lasers with a power of 2000 watts or more, with even a 2500 W or higher connected with ultra-fast scanning heads, provide an attractive cost and economic indicators per unit of output. The inventors have calculated that the speed of laser scanning, equal to 30-50 meters per second, you can engrave a graphic image within a time frame measured in seconds per square foot, and to provide the unit cost, measured in pennies per square foot.

As mentioned here, "speed" is the speed of the laser output signal (i.e. the beam relative to the surface of the material. The relative velocity can be transferred by moving the laser output during the processing of fixed mater is Ala or by moving material during processing stationary laser output signal, (laser signal) or simultaneous movement of the laser signal, and material in different directions and/or at different speeds.

As shown in an example variant of the invention, the high-speed laser with high power is used to create graphic images and templates based on the construction material. The laser is below a reference position 32 in figure 1, is a high power laser with output power greater than 500 W, and some are given as examples of embodiments of the invention more than 1000 (W) W 1 (kW) (1 kW), 2000(W) W (2(kW) (2 kW)) or even more than 2500(W) W (2,5(kW) kW). The output power of the laser, mentioned here, is a constant, what is different from the output power when the laser has a temporary energy emissions or if the laser is pulsed. Constant power can be changed by adjusting the power supply mode of the laser. The frequency of the laser is typically in the range of, for example, from 10 to 60 kHz. Given as examples of industrial laser supplied by the company Rofin-Sinar Technologies, Inc., is laser CO2with a capacity of 2.5 kW, model number DC025.

The output signal 34 of the laser 32 is connected with the scanning head 36, which includes a controllable, movable, relative to l is gcoe by weight, mirror coated, which is capable of scanning the laser signal with a relatively high speed. In the above, as examples of embodiments of the invention speeds are greater than 10 meters per second or even 30 meters per second, or higher lasers with high power. As described herein may be used in the scanning speed of up to 65 meters per second or even higher. In addition, the laser signal 38 may be scanned across the workpiece on the working surface 40, as shown in figure 1. For example, the signal 38 can scan length is 0.9 m (3 ft) or more.

In laser systems according to this variant embodiment of the invention used a very high scanning rate to achieve low unit cost of production in the processing of materials such as structural and decorative building materials. Examples of materials that can be processed using the systems and methods that are implemented here include glass (tempered glass and/or annealed glass, stone, ceramics, granite, composite wood, laminates, metal, plastic, plaster, paneling, plastic reinforced with fiberglass, wood composites, vinyl, acrylic, wood-fiber plate of high density, veneer, low profile carpet tiles, etc., In lasers that scan pricacy high speeds, according to variants of the invention, the use of the exclusive power to obtain a high power density per unit time for a satisfactory engraving graphics on construction materials and other substances at an industrial level of production. When the power of the laser is less than 500 W laser operating at a scanning speed of 30-50 meters per second, just will not have sufficient power to effectively engraving graphics on construction products.

To create a laser system with a capacity of 1000-2500 watts, which is managed by electroplating at high speed scan, for example, in the range of 30-50 meters per second, in the example embodiment of the invention light high-tech system of mirrors with high temperature coatings are used as industrial available. Example of available industrial light high-tech system of mirrors is ScanLab AG, Model PowerSCAN33 Be, 3-axis galvanometer scanner with 33 mm Be (beryllium) mirrors. I believe that high-temperature coating should be a natural alloy caused by steam. Lightweight beryllium base covered with materials providing a mirror surface to reflect more than 98% of the wavelength of the CO2, 10.6 m the crowns. Lightweight high-tech system of mirrors allows the galvanometers (or "galvo" for brevity) to move the laser signal (e.g., beam) repeat, but effectively on the substrate surface. The scanning speed of a laser system is amazing from the point of view of magnitude higher than the speed of laser scanning achieved with any of linear induction drives or traditional galvanical. By using this easy system of mirrors, the inventors reached a speed of laser scanning in excess of 65 meters per second, compared with a maximum speed of scanning is equal to 4-5 meters per second, while the traditional technology of laser engraving.

The system includes a control device (controller)is denoted by the reference position 30 in figure 1, which is able to maintain a very high scanning speed, the generated light, mirrors, and making the necessary changes in power at any particular speed. To create a graphical high resolution images, the control unit produces these changes in power at high speeds, such as at intervals of a few millimeters beam scanning. The scanning speed of the laser will determine the magnitude of change of power within the graphic image. Type (for example, the complexity and autonote) and the depth of the graphic image will also affect the as it will be engraved on the base. Example of available industrial control device is Foresight Model Controller, Embedded laser process Controller, manufactured by LasX Industries, Inc. The interdependence of changes in power, speed controls and speed of laser scanning are illustrated below in tables II and III.

Figure 2 shows a second variant implementation of the system for engraving materials such as building materials. The system, generally denoted by the reference position 10 includes a laser 11 for receiving the laser beam 12 in the direction of the computer controlled system of mirrors.

Illustrated, the mirror system includes a mirror 13 along the axis x, the set can be rotated and driven by the galvanometer 14 axis X. the Galvanometer 14 the x-axis is adapted to rotate and cause rotation of the mirror 13 to the axis X. the Rotation of the mirror 13 of the x-axis at the time when the laser beam 12 impinges on the mirror 13, causes the laser beam 12 to move along the axis X. (Digital) computer 15 controls the signal from the source 16 energy to control the rotation of the galvanometer 14 the x-axis mirror 13 to the axis X. the Laser beam 12 is deflected by the mirror 13 and the x-axis and is directed to the mirror 17 and the y-axis, the set can be rotated on the galvanometer 18 of the y-axis. The galvanometer 18 of the y-axis is adapted cooks ivalsa and cause rotation of the mirror 17 of the y-axis. The rotation of the mirror 17 of the y-axis causes movement of the laser beam 12 incident on the mirror 17 and the y-axis. The computer 15 controls the output signal of the source 16 of the energy supplied to the galvanometer 18 of the y-axis, to control the rotation of the galvanometer 18 of the y-axis.

The laser beam 12 is deflected by the mirror 17 and the y-axis and is directed through a focusing lens 19, which is adapted to focus the laser beam 12. The lens 19 may be multielement planar device focusing lens, which optically supports focused focal spot on the plane as soon as the laser beam 12 is moved over the material to engrave a graphic image. The lens 19, mirrors 13, 17 and galvanometer 14, 18 of the y-axis can be placed in the galvanometer unit (not shown).

The device 10 additionally includes a working surface 20, which may be a firm basis, such as an oven or a fluidized bed. Material (or the workpiece 21) is placed on the working surface 20. Material 21 includes a working surface 22, which is to be engraved. The working surface 20 may be adjusted vertically to adjust the distance from the lens 19 to the surface 22 of the material 21. The laser beam 12 is directed by the mirrors 13, 17 to the working surface 22 of the material 21. Usually the laser beam 12 is directed GLA is mainly perpendicular to the working surface 22, but different graphics can be achieved by adjusting the angle between the laser beam 12 and the working surface 22 of from about 45° to about 135°. Relative movement between the laser beam 12 in contact with the working surface 22 of the material 21 causes the graphic image 23 to be engraved on the working surface 22. The movements and timing of work mirrors 13, 17, and the power of the laser beam 12 is controlled by the digital computer 15 controls to engrave specific desired graphic image 23. As indicated here, the relative movement can cause the movement of the laser beam 12 (for example, using a system of mirrors), because the working surface 22 remains stationary, the movement of the working surface 22, while the laser beam 12 remains stationary, or a combination of the simultaneous movement of the laser beam 12 and the working surface 22 in different directions and/or at different speeds.

A second computer, such as a computer workstation (not shown)may be used in a way to facilitate the creation of the desired graphic image. For example, the graphic image can be scanned into a computer workstation, converted into the appropriate format and then entered into the computer 15 controls. The digital computer is Ter 15 control then controls the galvanometer 14, 18 and mirrors 13, 17, and the signal power of the laser beam 12 to create a graphic image on the surface of the material of the working surface 22 at a corresponding power and speed for high performance.

The system 10 may also include a reservoir 24 for injecting a gas such as an inert gas in the working area. The amount of gas can be controlled by the digital computer 15 controls or other means.

The term "engraving"as it is used here means to contact the material with the laser beam 12 to create a graphic image. During engraving, the laser beam 12 applies energy to the base, thereby causing the apparent significant change in fundamentals, such as by removing the cover of the base, remove base material, and so on, the Result is a transformation of the basis, which is visually noticeable. The term graphic image relates to decorative and artistic drawings, non-decorative images, templates, graphic images, types, alphanumeric characters, logos, and other designations, etc.

Two technologies of laser engraving graphic images on the materials include raster and vector technology. Raster technology can be defined as a laser drawing image the Oia or horizontal, or in the vertical direction by scanning in a continuous manner back and forth, while the graphic image is not processed. Vector drawing can be defined as drawing with a laser contour of each part of the graphic image, until all the graphical image is not executed.

The magnitude of the laser power required to create an acceptable picture at high speed will be determined by the nature of the foundations. The laser power can be at any point in the range above 500 watts and as high as, for example, 5000 watts. For example, the power required to cause the laser pattern on cotton t-shirts or silk, high speed scanning, may require only 500 watts, while you may need a higher capacity, such as 2500 watts or more, in order to effectively apply a laser pattern on plastic lumber, composite wood or denim at the same speed scanning. This principle can also be applied to the bases of smaller size, such as for mass consumption.

According to a variant embodiment of the invention the control information to control the laser can be stored in advance in the device 30 controls. Stored control information may be associated with one or many different graphics what images, for example templates.

The inventors received numerous materials and construction materials, including plastic lumber, vinyl exterior siding, wood composites, drywall, articles of laminates, veneer, fiberboard, high density tempered glass, annealed glass, drywall, vinyl, ceiling tiles, flooring, composite elements made of fiberglass and plastic, carpet tiles, and attempted to put graphic images on these items using high speed (more than 10 meters per second, while preferably 30 meters per second) and lasers with high power (greater than 500 W, and some are given as examples of embodiments of the invention, 2000 watts or more, or as large as 2500 watts). The results of the experiments have not yielded nothing surprising in the fact that in each case, the laser was able to inflict a wonderful and artistic designs on these products within seconds. Therefore, the equipment described in embodiments of the invention, provides, for the first time, economic breakthrough for laser engraving a graphic image on construction products.

The inventors were surprised attractive and intricate graphics, and structure depicted p is admeta, which could be engraved at high speeds on the details of construction products made of acrylic, vinyl and fiberglass, plastic lumber and wood composites. A variety of graphic images and drawings of the wood fibers were engraved on these building products in a time frame measured in seconds per square foot. Products of traditional decor has evolved into decorative items within seconds. Pictures of wood fibers oak, walnut, cedar and mahogany were laser marked on the plastic lumber and wood composites to create realistically simulating wood parts of flooring. Even exotic images of wood fibers, such as leopard images of wood fibers, and other floral and graphic templates are laser marked on the plastic lumber and wood composites with high speed performance, to create a striking new graphics. Most importantly, these graphics were created in such a short time frame that the process of laser engraving would be certainly economical for large-scale production. Graphics, laser marked on drywall, added a new degree of freedom in the aesthetics of the design of internal walls and represent the other is th surprise. Application of laser in various structures of the fibers in products for flooring in the range from fiberboard, high density and soft wood-fiber plates to ceramic tiles, provides new cheap alternatives for design and decorating flooring. Engraved graphics, and templates can also be laser engraved on the mirrors to create an entirely new aesthetic pleasing appearance in the scale of mass production.

The inventors believe that the laser system is given as a variant embodiment of the invention here can provide almost limitless characteristics in relation to fashion and design construction products for the first time in an economical production process. The inventors have demonstrated that lasers with a power of 2500 watts, controlled galvanometer mirrors can certainly decorate building products in seconds and, thus, are very cheap, if not revolutionary, for the cost structure. To further improve economic performance, the product can be engraved with a laser at a high speed (for example, more than 10 meters per second) and high capacity ( such as more than 500 watts) and at the same time to be connected with a simple system the conveyor my move. The laser system can print on the fly" during the continuous process of laser engraving. There are also several other means to improve economic performance, such as: multiple lasers can be placed along the production line to double or triple the performance of the scanning head may be attached to the linear induction motor and will engrave with a laser wider material in sections until the entire item will not be processed; the distance from the laser to the work surface can be increased to allow the laser engraving wider parts or multiple parts at one time.

For example, laser engraving plastic lumber in a continuous way for mass production may require one laser with a power of 2500 watts, aimed at the working surface, is equal to 50.8 cm (20 inches), which operates at high speeds to match the linear velocity of the way. But in order to perform laser engraving internal doors for mass production, which have dimensions of 3 feet by 8 feet (0,91 m by 2.44 m), may be more effective to use multiple lasers or a linear induction motor to cover the entire working surface. Despite the setting, the inventors have determined is, the laser power is 500 watts or more (for example, 500-2500 watts) and speed of laser scanning is equal to 10 meters per second or higher (for example, from 10 to 50 meters per second), give satisfactory economic performance per unit cost of production for laser engraving a graphic image on construction products. Modern unit cost could be reduced to dollars per square foot to cents per square foot by increasing the speed of the laser, since the standard industrial rate equal to 3, 8 meters per second up to, for example, 50 meters per second.

Power and speed must be controlled to avoid any undesirable consequences of sororate, such as full charring, burn-through and/or melting of the material, which cause the engraving.

You must understand that the methods and systems described herein may be used for applying engraving on materials other than construction materials. Other materials that can be applied in engraving, in accordance with a variant embodiment of the invention described herein include: denim fabric or leather, such as are used in the finishing industry.

Computer hardware and software for the implementation of the options is sushestvennee of the invention, described here, may be of any kind, for example, either General purpose, or intended for some specific tasks, such as workstations. Computers can be a classroom computers Pentium®,work programs Windows XP®, Windows Vista®or Linux®or the computer may be a Macintosh computer®. The computer may also be handheld, such as (Personal Digital Assistant), personal digital assistant, cell phone or a small portable computer.

Programs can be written in the programming languages C, Java, Brew or any other programming language. Programs can be resident programs on the storage media, for example, magnetic or optical, for example, on the computer's hard disk, removable drive or media, such as memory card or SD media, or other removable media. Programs can be run over the network, for example, using a server or other device that sends signals to one or more local devices, which allows local device (devices) to perform operations described herein.

Examples

To demonstrate the influence of the basis material and template graphics on laser power and scanning speed, the following Table I lists the experiments that have been conducted on various podlog the Ah.

Table I
SubstrateGraphic imageLaser power (W)The speed of laser scanning (m/s)
Composite PVCCedar175010
Plastic wood compositeCedar250010
Plastic wood compositeMaple200010
Plastic wood compositeLeopard175010
Fibreboard, high densityWalnut250015
Painted fibreboard medium density (two layers dyeing)Oak250040
Fibreboard medium density (MDF)Pink pedal250015
Fibreboard medium density (MDF)Walnut ordinary150022
Fibreboard medium density (MDF)Oak oblique fibers150022
Painted fibreboard, high density (2 layers of coloration)Maple137515
Painted fibreboard, high density (1 layer painting)Oak250028
Primed wood stove high densityOak250032
PVCCedar250010
Cured in the form of injection is eraser Cedar225010

Effects speed control on the range of variation of the laser power for two separate graphic images shown in Tables II and III below.

Table II contains the data for 32 of the laser lines per inch, while table III contains data for 60 of the laser lines per inch. For example, a graphic image with 32 lines per inch, requiring to change the laser power every 2 pixels, it can reach a maximum speed of laser scanning, equal to 15 m/sec at a speed controlling device 10000 pixels per second (see table II). To double the speed of the laser up to 30 m/s in this case, the control unit must have the processing power equal to 20000 pixels per second. Because laser lines per inch increase (comparing table II with Table III), the speed of the device management becomes more important to ensure a high linear velocity of the laser.

Table II
Typical graphical image on 32 lines/ inch
Width changes power (Pixel)Speed controller (pixels/second) The speed of laser scanning (m/s)
410 00031
420 00062
310 00023
320 00046
210 00015
220 00030
110 0007
120 00014
140 00028
150 00035

Table III
Typical graphic image at 60 lines/inch
Width changes power (Pixel)Speed controller (pixels/second) The speed of laser scanning (m/s)
410 00016
420 00032
310 00012
320 00024
210 0008
220 00016
110 0004
120 0008
140 00016
150 00020

The preceding detailed description of certain listed as examples of embodiments of the invention was carried out with the aim to explain the principles of the invention and its practical application, because of what it allows specialists in the art to understand the invention for various the x of the embodiments of the invention and made various changes, suitable for a specific use. This description is not intended to be exhaustive or to limit the invention to the specific options described embodiment of the invention. Although only a few embodiments of the invention have been described in detail above, other embodiments of the invention are possible and are intended by the inventors to be included in this description and the scope of the applied claims. Description describes specific examples to achieve a broader goal than that which can be achieved in another way. Modifications and equivalents will be apparent to practitioners in the art and are included in the nature and scope of the invention in accordance with the attached claims and its relevant equivalents. This description is intended to be examples, and the claims is intended to protect any change or alternative that can be predicted by a professional with a traditional experience. For example, other types of lasers and other power lasers in watts outside described above could be used with this unit.

Only the formula of the invention, which used the word "means"should be interpreted in accordance with the provisions of the section of 35 CC States of paragraph 112, the sixth paragraph. In addition, no limitation of the description should not be transferred to any claim, except when these limits are definitely included in the invention.

1. Method of engraving a graphic image on a material, comprising a stage on which is applied the output signal of the laser to the material, and the laser output is moved relative to the material at high speed more than 10 m/s, while the laser output has a high constant power above 500 W during the whole period of time engraving to engrave a graphic image on the surface of the material.

2. The method according to claim 1, further comprising a stage on which retain the graphic image and in which the said stage of the application of the output signal of the laser includes a stage on which you use the information pointing to the stored graphic image to specify the management information for the output signal of the laser.

3. The method according to claim 1, wherein the material is a construction product.

4. The method according to claim 3, in which the construction product represents at least one of the following materials: material surface finish and material of external sites for sports games and the material for the exterior walls of the house.

5 the Method according to claim 3, in which the construction product is a composite building material made from numerous different materials.

6. The method according to claim 3, in which the construction product represents at least one of the following materials: plastic, reinforced with fiberglass, steel or panel of wood composite.

7. The method according to claim 3, in which the construction product is a glass product.

8. The method according to claim 7, in which the glass article is a glass,

9. The method according to claim 7, in which the glass product is a mirror.

10. The method according to claim 3, in which the construction product is a product for flooring.

11. The method according to claim 3, in which the construction product is a product of ceiling tiles.

12. The method according to claim 3, in which the construction product is a product of plasterboard.

13. The method according to claim 3, in which the construction product is a material made of transparent plastic.

14. The method according to claim 1 in which the said stage of the application of the output signal of the laser includes a stage on which move the laser output is controlled mirrors.

15. The method according to 14, in which a controllable mirror contains beryllium substrate, which has the floor.

16. The method according to 14, in which the village is oanna the output power of the laser more than 1000 watts, with controlled mirror is able to move the laser output at a rate of over 20 m/S.

17. The method according to 14, in which constant power output of the laser is greater than 2000 watts, with controlled mirror is able to move the laser output at speeds over 30 m/S.

18. The method according to claim 1 in which the said stage of the application of the output signal of the laser includes a stage on which is applied the output signal of the laser to the material on the area of 0.9 m or more.

19. The method according to claim 1 in which the said stage of the application of the output signal of the laser includes the steps, which make the laser output for processing the first part of the material, and that the laser output is a first output signal of the laser emitted from the first laser, and make another second the laser output is emitted from the second laser to process another part of the material.

20. The method according to claim 1, further comprising a stage on which to change the speed of movement of the output signal of the laser using device control.

21. The method according to claim 1, further comprising a stage on which to change the output power of the laser using device control.

22. The method according to claim 1 in which the said stage of the application of the output signal of the laser is before the stage, which continuously move the laser output relative to the material.

23. The method according to claim 1 in which the said stage of the application of the output signal of the laser is carried out according to the parameters that create the pattern on the material without undesirable damage to the material.

24. System for engraving a graphic image on the material, which includes:
the laser is made with the possibility to issue an output signal of the laser with high power exceeding 500 W;
a system of mirrors to move the output signal of the laser at a rate of over 10 m/s to engrave a graphic image on the surface of the material; and
a control device configured to control the power and speed of the output, the laser signal, and the control device is designed in such a way that its computing power is 10000 pixels/sec

25. The system of paragraph 24, in which the control device is configured to store information indicating a graphic image to specify the management information for the laser.

26. The system of paragraph 24, in which the material is a construction product.

27. System p, in which the construction product represents at least one of the following materials: material surface finish and material of external sites for sports the main game or the material for the exterior walls of the house.

28. System p, in which the construction product is a composite building material made from numerous different materials.

29. System p, in which the construction product represents at least one of the following materials: plastic, reinforced with fiberglass, steel or panel of wood composite.

30. System p, in which the construction product is a glass product.

31. The system according to item 30, in which the glass article is a glass.

32. The system according to item 30, in which the glass product is a mirror.

33. System p, in which the construction product is a product for flooring.

34. System p, in which the construction product is a product of ceiling tiles.

35. System p, in which the construction product is a product of plasterboard.

36. System p, in which the construction product is a material made of transparent plastic.

37. The system of paragraph 24, in which the mirror system contains beryllium substrate, which has the floor.

38. The system of paragraph 24, in which the output power of the laser is greater than 1000 W, and the mirror system is able to move the laser output at a rate of over 20 m/S.

39. Si is the topic of paragraph 24, in which the output power of the laser is greater than 2000 watts, and the mirror system is able to move the laser output at speeds over 30 m/s



 

Same patents:

FIELD: printing industry.

SUBSTANCE: invention relates to a method of manufacturing a protection property for the protective element, counterfeit-proof paper or data medium. The method of manufacturing a protection property for the protective element comprising a substrate which has at least one through hole and at least one marking in accurate register with this hole. The substrate, at least in the area of the manufactured marking is equipped with a marking substance modifiable by laser. During the same technological operation by exposure of laser radiation at high laser power at least one through hole is made in the substrate. By exposure of laser radiation at lower laser power at the marking area the marking substance is modified and thus at least one marking is created in accurate register with the through hole.

EFFECT: proposed protection property enhances the counterfeit protection level of the protective element.

23 cl, 5 dwg

FIELD: metallurgy.

SUBSTANCE: preliminary construction of calibration curve of dependence of etching depth of specimen surface of the specified metal or its alloy on parameters of incident laser radiation to surface is performed at monotonic increase in specific power of laser radiation from value of 0.1 J/cm2·s to the value at which molten drops are formed on etched surface. Then, spatial control of laser beam scanning on surface of metal or its alloy is performed at least as per one coordinate. Simultaneously with translational movement of laser beam there performed is its rotation with radius R. Radius R and angular rotation speed of laser beam is chosen considering the cut width and radius of laser beam.

EFFECT: improvement of the method.

5 cl, 3 dwg, 1 ex

FIELD: process engineering.

SUBSTANCE: proposed method may be used for making inscriptions and symbols on various materials, for examples, on light guides, light boards operated at high levels of illumination. Prior to applying coat of background material, contrast coat is applied that features minimum light reflection factor. Processed surface is divided along two coordinates into elementary sites to displace laser beam over said sites. All area of said sites is divided into area of sign outline and sign body area. On evaporating coats by laser radiation, the number of elementary sites is reduced to zero to form multistage sign profile comprising, at least, one step produced in contrast coat. Body sign area is kept unchanged.

EFFECT: higher readability and accuracy of signs, preservation of initial colours of materials.

3 cl, 3 dwg

FIELD: physics, optics.

SUBSTANCE: device for transferring an image onto a wooden base has apparatus for receiving and/or creating an image. At least one source of a laser beam. Apparatus for moving the laser beam with rotation and/or translational movement of the laser beam relative the said wooden base or vice versa - for moving the wooden base relative the laser beam, as well as for focusing the laser beam onto the said base. At least one module for regulating radiation power of the laser beam. At least one module for controlling the said movement and focusing apparatus. Apparatus for converting information of the said image into an instruction for the said at least one regulation module and the said at least one control module. The said at least one regulation module regulates radiation power of the laser beam by directly changing pumping of the active substance and/or changing operation of the modulator located in the resonator of the source of the laser beam.

EFFECT: solution enables reproduction of images on a wooden base with an irregular shape with high accuracy and speed of processing, as well as high depth of transfer within the base.

22 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: invention refers to method of laser labelling surface of metal or its alloy and can be implemented in machine building, jewellery industry and medicine. The method consists in preliminary plotting a calibration curve of dependence of depth of marking surface of a sample of specified metal or its alloy by means of effect of specific power of radiation incoming on surface. By means of a computer there is generated a protective digital code, where specific depth of marking and specific power of laser radiation correspond to each digit. A mark visible by a naked eye is applied on the marked surface of metal or its alloy by means of laser radiation transferred along marked surface; this mark corresponds to alpha-numeric or graphical information. A protective digital code in form of sequence of recesses invisible to a naked eye is applied on the produced surface visible to a naked eye; this code is marked by laser radiation of specific power chosen from the said calibrating curve.

EFFECT: high level of protection and simplified process.

8 cl, 5 dwg, 1 tbl, 1 ex

FIELD: printing industry.

SUBSTANCE: invention is related to security paper, in particular to banknote, having individual mark, which is applied at least once on face and reverse side of security paper. At least one of individual identifiers applied on face and reverse side of security paper is applied onto security paper by contactless method. Besides application of individual identifiers on face and reverse side of security paper is carried out by means of single-sided treatment of security paper.

EFFECT: high degree of security paper protection, with minimum production costs.

32 cl, 16 dwg

FIELD: technological processes.

SUBSTANCE: invention may be used in systems of laser marking and engraving in industry, for artistic applications, for authentication and personification of items and documents. Method for application of raster image consists in the fact that image of original is introduced into computer, image is transformed into raster array of numbers, working element coordinates are changed, working element is put in action, and dots are applied with its help onto surface of item. Working element used is represented by laser radiation. At the same time test image is previously downloaded into computer, and this image is applied onto surface of test sample, produced result is assessed, and laser radiation properties are accordingly adjusted in compliance with it. Multistage filtration of raster array of numbers is carried out, afterwards image of original is marked onto item.

EFFECT: high quality of applied image, increased resource of equipment, higher speed of image application, and also expansion of field of materials suitable for application of images.

6 dwg

FIELD: technological processes.

SUBSTANCE: digital array of data is created, which defines graphical configuration of partial plating, at that, using digital array, trajectory of tool motion is calculated, as well as control data for tool control, at that tool and single- or multi-layer film carcass are moved in relation to each other in accordance with tool motion trajectory. Tool that is controlled according to control data provides partial discrete de-metalation of metal layer by means of application of wipe-off mask for partial masking of single- or multi-layer film carcass. Foresaid mask is applied by spraying. Single- or multi-layer film carcass is further dried, provided with metal layer, and metal layer is partially removed by flushing method in area of wipe-off mask.

EFFECT: efficiency from production point of view, possibility to apply coating on different surfaces and exclusion of thermal or mechanical effect onto surface.

13 cl, 16 dwg

FIELD: protective members for visual controlling of authenticity of printing product such as security papers, banknotes, identification cards.

SUBSTANCE: protective member is formed as color layer applied to substrate and having color-free portions produced by exposing color layer to laser radiation for forming of image detected by visual control. Substrate surface is provided with relief, said image being formed on at least one side of relief after exposing to laser radiation falling at predetermined angle to relief surface. Protected printing product is equipped with protective member for visual controlling of paper authenticity.

EFFECT: increased extent of protecting printing products due to creation of protective member more complicated for counterfeit and using optical variable image.

7 cl, 5 dwg

FIELD: printed matter of special format.

SUBSTANCE: multi-layered article comprises the layer sensitive to the laser radiation, marking member, e.g., diffraction and/or holographic structure, reflecting layer, and print formed in the second layer and/or in the layer sensitive to the laser radiation. The layer sensitive to the laser radiation has markers that are made by means of laser radiation and precisely positioned with respect to the marking member.

EFFECT: enhanced reliability of protection.

27 cl, 40 dwg

FIELD: metallurgy.

SUBSTANCE: device comprises source 3 to form heat feed zone 11 on part surface 10, device 5 to feed welding filler 13 into said zone 11 and device 15 to displace heat source 3 and filler feed device 5 relative to part surface 10. Control unit 17 with control program controls displacement so that welding power and heat feed zone diameter are set to ensure cooling rate of at least 8000 K per second at material crystallisation. Depth of remelting previous layer is set proceeding from the condition of formation of polycrystalline weld seam.

EFFECT: rules out cracks.

14 cl, 6 dwg

FIELD: process engineering.

SUBSTANCE: proposed unit comprises bed with driven device to clamp and process parts, drives for working tool to displace in three mutually perpendicular axes, laser with laser beam feed device, power supply and control system and work zone guard with protective windows. Transparent sealed chamber is equipped with two valves, one for feeding process gas and another one for waste gas discharge. Said valve may be connected to air system hoses to allow filling with process gases.

EFFECT: simple design, reliable protection of personnel, higher ecological safety.

2 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: proposed method may be used for making inscriptions and symbols on various materials, for examples, on light guides, light boards operated at high levels of illumination. Prior to applying coat of background material, contrast coat is applied that features minimum light reflection factor. Processed surface is divided along two coordinates into elementary sites to displace laser beam over said sites. All area of said sites is divided into area of sign outline and sign body area. On evaporating coats by laser radiation, the number of elementary sites is reduced to zero to form multistage sign profile comprising, at least, one step produced in contrast coat. Body sign area is kept unchanged.

EFFECT: higher readability and accuracy of signs, preservation of initial colours of materials.

3 cl, 3 dwg

FIELD: technological processes.

SUBSTANCE: invention relates to laser technological complex for treatment of large-size objects. Complex comprises technological laser, elements of laser radiation transportation, in the form of rotary mirrors, optical-focusing head with mechanism of its displacement along three coordinates and technological table for treated item. Technological table is arranged in the form of two platforms arranged one over another. Upper platform is arranged as movable in plane parallel to lower platform. Mechanism for billet fixation is installed on lower platform. Upper platform is arranged with the possibility to provide for rotation by 90 degrees relative to lower platform and to fix it in this position. Optical-focusing head is arranged in the form of body, in cavity of which there is a unit of fixation of spherical focusing mirror, which is placed on its wall. On opposite parallel wall there is a rotary flat mirror fixed at the distance l=F-(lndl/tga+2Df.m.), where F-focus distance of spherical mirror, mm, dl - diametre of laser beam, mm, Df.m. - diametre of flat mirror, mm. Unit of fixation is arranged with the possibility of its rotation by 90°, displacement and fixation in horizontal direction relative to laser beam falling point at flat mirror arranged at the angle of 45°.

EFFECT: invention makes it possible to expand functionality, to increase efficiency of laser complex operation and to improve quality of billets treatment.

4 dwg

FIELD: processes for laser thermal treatment of thin-sheet metallic materials, metal alloys, hardened high-strength steels with different thermal-physical properties, possibly in machine engineering, aircraft and ship manufacture.

SUBSTANCE: method comprises steps of acting upon treated zone by means of laser beam and at least by means of one light beam; controlling rate of heating said zone due to interrelated movements of spots of laser beam and at least of one light beam along line of thermal treatment; providing elliptical shape of spots of laser beam and light beam at relation of sizes of lengthwise and crosswise axes of ellipse of spot of laser beam equal to 2 : 1 and density of irradiation in spot 105 - 107 Wt/cm2.

EFFECT: possibility for providing high-quality welded joint by means of laser-light thermal treatment.

14 cl, 5 dwg

FIELD: processes for laser thermal treatment of thin-sheet metallic materials, metal alloys, hardened high-strength steels with different thermal-physical properties, possibly in machine engineering, aircraft- and ship manufacture.

SUBSTANCE: method comprises steps of acting by means of laser beam and at least by means of one light beam upon treated zone; controlling rate of temperature change of said zone due to interrelated movement of spots of laser beam and at least of one light beam along line of thermal treatment; providing elliptical shape of spots of laser beam and light beam at relation of sizes of lengthwise and crosswise axes of ellipses of spot of laser beam equal to 2 : 1 and density of irradiation in spot 105 - 107 Wt/cm2.

EFFECT: possibility for providing high-quality welded joint by means of laser-light thermal treatment.

13 cl, 5 dwg

FIELD: processes for laser thermal treatment of thin-sheet metallic materials, alloys, quenching high-strength steels with different thermal-physical properties, possibly used in machine engineering, aircraft manufacture, ship making.

SUBSTANCE: method comprises steps of acting upon treated zone by laser beam and at least by one light beam; controlling rate of temperature change of said zone due to motion of laser beam spot and at least of one light beam spot along thermal treatment line; providing elliptic shape of spots of light beam and laser beam at relation of sizes of lengthwise and crosswise axes of ellipse of spot of laser beam 2 : 1 and power density of irradiation in spot in range 10 5 - 107 Wt/cm.

EFFECT: possibility for receiving high-quality welded joint by laser and light thermal treatment method.

16 cl, 5 dwg

FIELD: laser treatment of materials.

SUBSTANCE: method comprises measuring pressure in the space between the nozzle of the focusing and surface of the article to be treated and inside the nozzle, correcting the value of the reference pressure in the space between the nozzle of the focusing unit and surface of the article to be treated by varying pressure in the nozzle, and maintaining a given distance between them by varying the pressure upstream of the nozzle with respect to the reference pressure with regard to its correction. The device comprises gage for measuring pressure of the radial flow and gage for measuring pressure of gas inside the nozzle that are connected in series with the filter via the analogue-digital converter. The filter is made of a programmable logic matrix that is connected with the microprocessor connected with the controller. The optical pickup is mounted on the shaft of the drive of the focusing unit and is connected with the microprocessor through a unit for converting pulses into code connected with the controller. The microprocessor is connected with the computer provided with a program for control of the device.

EFFECT: enhanced precision.

2 cl, 1 dwg

FIELD: laser working processes, namely system for laser working used for different working of parts having surfaces of revolution.

SUBSTANCE: installation includes apparatus 3 for fastening and rotating worked part mounted on platform arranged with possibility of moving on guides 6. Technological laser, laser head 15 and light joint 19 are in the form of united laser unit mounted in carriage of vertical motion drive. Said vertical motion drive 8 is mounted on carriage of stationary drive unit 9 for horizontal motion. Drive 20 for angular rotation of light joint 19 is mounted on body of laser unit. Inner cavities of light joint 19 and laser head 15 are communicated with system for supplying purified air.

EFFECT: enhanced operational reliability and safety, reduced size of installation, small contamination degree of optical members at working process.

4 dwg

FIELD: different branches of machine engineering and metallurgy, possibly working products for modifying or preparing topography of article surface or raw materials.

SUBSTANCE: method comprises steps of relatively moving article and powerful beam in crossing direction in order to act upon several positions on article by means of said beam; at each position moving beam relative to article according to predetermined way; melting material of article and moving it by action of powerful beam for forming recesses or openings; joining article having prepared surface with target part. Product formed by such process has predetermined surface roughness.

EFFECT: possibility for producing article with predetermined surface roughness.

46 cl, 11 dwg, 1 tbl

FIELD: different branches of machine engineering and metallurgy, possibly working products for modifying or preparing topography of article surface or raw materials.

SUBSTANCE: method comprises steps of relatively moving article and powerful beam in crossing direction in order to act upon several positions on article by means of said beam; at each position moving beam relative to article according to predetermined way; melting material of article and moving it by action of powerful beam for forming recesses or openings; joining article having prepared surface with target part. Product formed by such process has predetermined surface roughness.

EFFECT: possibility for producing article with predetermined surface roughness.

46 cl, 11 dwg, 1 tbl

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