奥地利专利AT512386A1 DEVICE FOR LASER MARKING OF LONG-SLIDE BODIES

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专利摘要:
Apparatus for marking elongated bodies (1), such as rods, bands, cables, cables and the like, comprising a substantially closed housing (4) comprising an inlet (8) and an outlet (9) for passage of the body (1) and with a laser arrangement (22) for processing the lateral surface of the body (1), the body being guided essentially rectilinearly through the housing (4) and at least one shielding arrangement (14) for shielding and / or attenuating it along the lateral surface ( 2) of the body (1) extending laser radiation is provided.
公开号:AT512386A1
申请号:T25/2012
申请日:2012-01-12
公开日:2013-07-15
发明作者:Werner Lichtscheidl；Rudolf Descovich；Leopold Hubmayer
申请人:Medek & Schoerner Gmbh；
IPC主号:

专利说明:

Device for the laser marking of elongated bodies
The invention relates to a device for processing, in particular for marking elongated bodies and / or continuous products such as cables, tapes, ropes or the like.
Such continuous products can be made in a variety of ways such as extrusion, drawing, extrusion, rolling, etc. In the case of cables, for example, it may be necessary to provide the cable material with insulation. This insulation serves on the one hand the shielding of the conductive or transmitting material and on the other hand the protection of the cable core. In order to protect the cable core against environmental influences in the best possible way, there are different sheathing materials and sheathing designs depending on the requirements. Examples of cable sheath materials are polypropylene, PVC, PE or Teflon. In many cases, it is necessary to have the outer shell of the elongated body with markings such as length markings, manufacturer information, general
To provide information or warnings. The attachment of these markings is particularly resistant or liquid-repellent
Wrapping materials such as Teflon technically very expensive. ι »· · · · · · · · · · · · · · · · I I I I I I I. ······················································.
2 ........... 50 804 GP / GA
For example, so-called inkjet processes are used. However, these are inefficient in the maintenance of the inkjet nozzles and due to the poor printing image by splashes of paint etc.
Furthermore, it is also known to mark plastic jackets or other elongate bodies by means of hot stamping. Also, this method is not practical especially for resilient sheaths or even for very small dimensions of elongated bodies. Especially with very thin wall thicknesses, the hot embossing process can destroy the insulation layer.
To overcome the disadvantages of the prior art, lasers can be used to machine and mark the body of the body. Advantages of the laser are, for example, that even highly resistant sheath materials can be processed, that markings can also be made in a very small dimension, and that laser marking devices are essentially maintenance-free. In addition, laser arrays are freely programmable and can, for example, also generate large characters or markings on curved surfaces.
Prior art devices for inscribing elongated bodies by laser have the disadvantage that the operation of these devices brings high safety effort with it. For marking, lasers with a relatively high power are used. There is the danger that the escape of a misguided laser beam could injure persons or cause other unforeseen eventualities. In particular, statutory regulations apply to the operation of such lasers, the fulfillment of which is generally cost-intensive.
The object of the invention is therefore to provide a device for processing, in particular for marking any moving, elongated bodies such as cables, straps, ropes, etc. by a laser arrangement which is simple and safe to operate, the simple in construction and thus is low in production and flexible in use. "·" ·
3 50 804 GP / GA
In particular, these tasks include designing the device so that it corresponds to the laser class 1. Laser class 1 means that the accessible laser radiation is harmless or that the laser is provided in a closed housing. In the case of elongated endless products, the provision of a completely closed body is not possible since the device must have at least one inlet and one outlet for the elongate body. Nevertheless, it is possible according to the invention to form a de facto closed housing in that the openings are closed by the elongated body itself.
Further, the objects of the invention to provide a device for laser marking of elongate bodies, which is flexible in the application. This implies that the elongate body must be insertable transversely to the direction of movement of the body in the device. Especially in the case of continuous products, it is only possible to a limited extent to introduce the elongated body along the direction of movement into the device. For this it would be imperative that a free end of the body can be introduced. In the case of endless products, this is only possible in rare cases, so that insertion in the direction of movement must be possible without the need for a free end.
Furthermore, the objects of the invention include that body can be marked by the device according to the invention, which are not suitable due to their nature to be bent. In particular, this relates to rigid bodies, fragile, brittle bodies such as fiber optic cables or relatively thick elongated bodies such as thick core cables and thick insulation, which are not flexible due to their rigidity. The object of the present invention is thus also to provide a device which allows a guide of the elongate body through the device, which is carried out substantially straight or slightly curved.
The solution to a combination of the above tasks is necessary to provide a device that is practical and efficient to use. * * • »**« ·
4 50 804 GP / GA
The objects of the invention are achieved in that the body is guided substantially rectilinearly through the housing and that at least one shielding arrangement is provided for shielding and / or attenuating laser radiation extending along the lateral surface of the body.
Further advantageous features of the device according to the invention are that the inlet opening and / or the outlet opening are made larger than the profile of the body and that leakage of laser radiation through the gap between the body and the inlet opening and / or the outlet opening is prevented by the screening arrangement, in that the shielding arrangement comprises at least one shielding element that contacts the body on its lateral surface, that the shielding arrangement touches the body along its entire circumference and / or that the body is processed by the laser arrangement in a machining area, the machining area lying in the housing.
Furthermore, it can be advantageously provided that along the body between the processing area and the inlet opening and / or between the processing area and the outlet opening a shielding arrangement is provided, that at least one guide arrangement for guiding the body is provided in or through the housing Openable housing is designed to allow, for example, the insertion of the body transversely to the direction of movement or main extension direction of the body and / or that the shield and optionally the guide assembly are designed openable to allow insertion and / or removal of the body transverse to the direction of movement of the body.
The invention is further characterized in that the shielding elements comprise elastic or soft material, which yields upon contact with the body and optionally contacts the body along a partial section of the lateral surface, in that the shielding elements are designed as rollers, brushes, elastic bodies and / or hollow cylinders in that the shielding elements are designed as rotatable rollers which, when the body moves, roll on the latter and / or that the shielding elements are arranged in pairs on diametrically opposite sides of the body, wherein the distance between two shielding elements arranged in pairs is smaller than the diameter of the body in this area.
Further features according to the invention are that a movement measuring device is provided for measuring the movement of the body, that a control unit for controlling the laser arrangement, for synchronization or coupling with the movement measuring device and / or for activating the laser arrangement is provided with closed shielding arrangements and / or closed housing, and / or that the marking of the body is carried out continuously, by moving the body or a portion of the body in the direction of movement through the processing area.
In order to achieve the objects according to the invention, in particular to fulfill the requirements of the safety requirements and the practicability, special precautions must be taken on the device according to the invention.
In order to be able to mark endless elongated bodies such as cables, bands, bars, etc., it is necessary for the device, in particular the housing of the device, to have an entrance and exit for the body. In order to guide the body substantially rectilinearly or slightly bent through the device, the inlet opening and the outlet opening must be substantially aligned, however, the inlet opening and the outlet opening can not correspond exactly to the body cross-section or the profile of the body due to dimensional tolerances of the performed body but must have a certain excess. This creates a gap between the body and the edge of the inlet opening and between the body and the edge of the outlet opening. Through this gap, there is a risk that laser radiation escapes. To prevent this, shielding arrangements are provided in the housing. These shielding arrangements are impenetrable to the laser radiation. Optionally, the Abschirmanordnungen are also designed such that a portion of the laser light can penetrate, but which is not dangerous. The shielding arrangement is designed to prevent the escape of laser light, which essentially follows the direction of movement of the body. For this purpose, along the circumference of the body shielding elements are provided, which preferably individually or together the entire circumference of the body · Φ φ φφφφ · * · · φ Φ * ♦ · I «·
6 ........... 50 804 GP / GA. Possible embodiments of the shielding elements are, for example, flexible rollers, brushes, flexible diaphragms, templates, etc. For shielding laser light, which possibly passes obliquely to the direction of movement of the body in the direction of the exit opening or inlet opening, entry shields and exit shields are provided.
In practice, the operation of the present invention is, for example, as follows:
The arrangement is located in a housing, wherein the housing has an inlet opening and an outlet opening. In order to insert the body, for example a cable, into the device, the housing is opened. For this purpose, the upper housing part and the lower housing part are separated from each other. The division of the housing in the upper housing part and the lower housing part takes place along a dividing line which, for example, extends through the inlet opening and the outlet opening. When the housing is opened, the laser inside it is disabled, so that even if it is operated incorrectly by opening the housing, no danger can arise. The housing itself is a guide assembly for guiding the body. This is especially adapted to allow a linear guidance of the body through the device. Furthermore, shielding arrangements are provided along the body. In order to insert the body, an arbitrary partial element, for example a part of the product to be labeled, is now inserted into the guide arrangement. To make this possible, the guide assembly can be opened so that the body can be inserted laterally. The shielding arrangements can also be opened in order to use the body transversely to the direction of movement. The entrance shield assembly and the exit shield assembly can be opened by opening the housing, for example.
If the body is brought into the intended position, the guide assembly, the Abschirmanordnungen and the housing can be closed. When the housing is closed, the entrance shield assembly and the exit shield assembly and the apertures disposed therein also close. Only when the housing is closed, the laser assembly is activated again.
The marking by the laser is preferably continuous. At the same time only a small part of the body is processed. By continuous movement along the direction of movement, any subsection of the body, in particular that subsection located in the processing area, can be processed. To move the body through the device according to the invention, an external drive of the body can be arranged. For example, the body is comprised of an extrusion device and a downstream cooling device which includes a drive for moving the body along the direction of movement. According to the invention, however, it can also be provided that the guide arrangement comprises drive elements, such as driven rollers, which can move the body along the direction of movement. To determine the speed of the moving body, a movement measuring device may be provided. This serves on the one hand to measure the moving cable length and on the other hand to control the laser arrangement. Preferably, at least one of the rollers of the guide arrangement is connected to a device for measuring the movement of the cable.
Alternatively, the measurement of the movement of the cable may be made by other prior art devices.
As noted above, lasers or laser-like devices are used to mark the body. These comprise a radiation source which directs radiation of different or the same wavelength with high intensity onto the desired processing area. The radiation source is further comprised of an arrangement which allows a deflection of the beam to desired positions of the area to be processed. In principle, all lasers can be used in the device according to the invention which are suitable for machining at least the surface of the shell of the body in such a way that visible traces of the processing arise. In practice it has been found that especially solid-state lasers such as Nd: YAG or fiber lasers with a wavelength of λ = 1064 nm and CO2 lasers with a wavelength of λ = 10.6 pm are particularly well suited. It is noted at this point, however, that the indications of the type of laser and the wavelengths available on the basis of available on the market laser * · ·· Ilt · · • · * ····
8 50 804 GP / GA. Of course, other types of lasers such as gas lasers, dye lasers, solid-state lasers, etc. can be used.
The laser beam strikes the surface of the body during processing and marking of the body. Due to the high intensity of the radiation, a chemical and / or physical reaction is produced, for example, to remove material, to vaporize material, to fuse material, to discolour material, to change the opacity of the material, to change the surface structures and / or to other effects that make a mark of the body meaningful. Used materials in the cable industry, with which laser inscriptions can be carried out are, for example, polyamide, polyethylene, polypropylene, polytetrafluoroethylene, polyurethanes, polyvinyl chloride, polyvinylidene fluoride, chloroprene, rubber, FEP (Teflon), perfluoroalkyl alkane, ethylene-tetrafluoroethylene copolymer, cross-linked polyethylene For pipes, for example, plastics such as polyethylene, polypropylene, PVC or the like are used. Also metallic compounds, metals or the like can be marked by laser arrays. Furthermore, lacquers, resins and other surface coatings can be processed by processing with the laser arrangement according to the invention.
As mentioned, the body is moved continuously or discontinuously through the device. Depending on the text length, character height, repetition rate of the text or marking length, marking height and repetition rate of the marking, the speeds of the body to be moved from low speeds of just over 0 m / min. up to about 1000 m / min. In special cases, the device may also label a body having a speed of several 1000 m / min. having. Typical processing speeds of cables, for example 1064 nm lasers, are in the range of 10 m / min. up to 200 m / min. This field of application is used for example in the marking of extruded cable sheaths in practice. * · »· ♦ *** ··· I t • I ft · ·« · φ · φ φ · * Φ · 9 9 9999 * * * · · · · · · φ φ 9 φ
9 .......... 50 804 GP / GA
The shielding arrangement comprises one or more shielding elements. These are designed to prevent leakage of the laser beam by splitting at the inlet opening and / or outlet opening. Preferably, the shielding elements comprise a material which absorbs, reflects or at least partially or completely stops the laser radiation. It is thus a characteristic of the shielding elements that they are impenetrable to laser light or weaken the laser radiation at least to such an extent that it can be classified as harmless. In order to close the gap between an inlet or outlet opening and the body, the shielding elements are preferably provided in the vicinity of these openings. Furthermore, the shielding elements touch the body, so that no gap is provided between the shielding element and the body. This prevents laser light from escaping parallel to the direction of movement or extension of the body. In order to make the contact with the moving body efficient, the shielding elements may be in the form of brushes, rollers, rings or the like. In particular, rolls of a soft, but for the laser light impermeable plastic or foam are advantageous
Examples of materials of the elastic components of the shielding elements are soft, medium or rigid PU foam (RG25 4.0 kPa, RG35 5.0 kPa, or RG40 6.0 kPa) and thermoelastic viscose foam such as Memoryfoam (RG 50 3.0 kPa).
These rollers can be arranged, for example, along the lateral surface of the body. The shielding elements preferably contact one another even when the body is not inserted. This prevents the leakage of laser radiation even when no body is inserted. The contact of the shielding, in particular of the rollers, for example, takes place flat, the shielding gegeneinader and deform each other elastically.
According to the processing of the lateral surface and / or the body happens in the housing. The laser assembly is located at least partially in the housing, with relevant parts such as power supplies, control parts or radiation generator can be outside of the housing. However, the laser beam is released in the housing, especially in the processing area.
The Abschirmanordnungen are provided to attenuate or shield laser radiation that propagates along the lateral surface and parallel to the direction of movement of the body. This particularly applies to the area that is in the immediate vicinity of the lateral surface. The shielding of this area is of particular importance, since laser radiation could escape through the housing due to the straight guidance of the body. It should be noted that by "substantially straight line" guiding the body through the housing is meant guiding the body along a straight line, but also guiding the body along a slightly curved contour. Especially for rigid bodies or bodies that have a high rigidity, a nearly rectilinear guide is required.
The profile of the body is that cross-sectional area which lies in a plane of the body whose normal vector substantially corresponds to the direction of movement of the body or of the main axis of extension. For cylindrical bodies, the profile thus corresponds to a circle, in the case of band-shaped bodies the band cross-section.
To improve safety, the device comprises a plurality of sensors, which are connected directly or via a control unit to the laser array. By means of these sensors it is detected, for example, whether the housing is closed and / or whether the shielding arrangements are closed.
Only when all safety devices are in their ready state, the laser assembly is activated and can be used to edit the body. In particular, this relates to those safety devices that are necessary to prevent the leakage of laser radiation from the housing. For this purpose, at least the housing and the Abschirmanordnungen must be closed. By providing microswitches or similar switches on the housing and on the shielding arrangements, their position can be determined.
In a further consequence, the device according to the invention will be further described on the basis of selected exemplary embodiments. ·· "" "i *" ··· ····· t t * * ··· "· ·" · · · · · · · · · · * "• · · · *" ·· ψ
11 ........... 50 804 GP / GA
Fig. 1 shows a schematic side view of the relevant parts of a device according to the invention.
Fig. 2 shows a schematic view of the device according to the invention with the housing open.
Fig. 3 shows a detail of the section following the section line C-C of Fig. 1.
Fig. 4 shows an oblique view of selected details of a device according to the invention with the housing open.
FIGS. 5a, 5b and 5c respectively show detailed views of the shielding arrangement according to the invention.
Fig. 1 shows a side view of the device according to the invention. The viewing direction in the present figure is substantially parallel to the direction of movement 3 and / or to the main extension direction of the body 1. The device comprises a base frame 7 on which a housing 4 is provided. The housing 4 comprises an upper housing part 5 and a lower housing part 6, wherein the two housing parts 5 and 6 at least touch each other along a parting line 23. In the region of the dividing line, the outlet opening 9 is provided. Corresponding to the outlet opening 9, the inlet opening 8 is provided on the opposite side of the housing. In the present embodiment, the housing is designed to be openable. Specifically, the housing top 5 can be slid along parts of the base frame 7 to open the housing along the parting line 23. To move the housing part, a handle 10 is provided. Furthermore, the device comprises a control unit 24. This can take control functions such as the control of the laser array, the control of the guide arrangement, or other control functions.
The viewing direction is substantially normal to the direction of movement 3 and the main extension direction of the body 1. The housing comprises an upper housing part 5, which can be moved away from the lower housing part 6 via a handle 10. By this movement, the housing 4 opens along the parting line 23.
Inside the housing, a laser assembly 22, one or more guide assemblies 11 and two Abschirmanordnungen 14 are provided. The shielding arrangements 14 are located substantially in the region of the inlet opening 8 or in the region of the outlet opening 9. These openings are provided in the housing in order to guide elongated bodies 1, in particular endless products, through the housing. The right in the present view shield assembly 14 is shown in the open position. The shielding arrangement 14 provided on the left in the present illustration is shown in the closed position. The shield assemblies are openable to facilitate insertion of the body 1. Also, the guide assemblies 11 are designed such that a lateral imports of the body 1 is possible. In this context, lateral insertion is to be understood as meaning that the body is inserted or inserted into the device in a direction that deviates from the direction of movement 3 of the body 1. This has the advantage in practice that no free end of the body is needed. Any intermediate piece of the body can be inserted laterally into the device. For this purpose, it is also necessary to also perform the inlet opening 8 and the outlet opening 9 such that a lateral insertion of the body 1 is made possible. In the present embodiment, this is done by the parting line 23 of the housing, which extends in a preferred manner through the inlet opening 8 and through the outlet opening 9.
The laser arrangement or the processing region 26 is provided between the two shielding arrangements 14 in the present embodiment. The processing area of the laser arrangement used corresponds, for example, to a kind of pyramid with a rectangular bottom, the tip of which arises at one of the deflecting mirrors inside the laser head, the rectangular area leads out of the laser head, and 152 mm at a working distance (for example, 254 mm measured vertically downwards) x 278 mm. The laser focus is minimal on this plane surface and has the highest energy density there. Depending on the used plan field optics, the dimensions of the work area change. The two shielding arrangements in turn are between the inlet opening 8 and the
Outlet opening 9 is arranged. It should be noted that when changing the production direction, the inlet opening and the outlet change their definitions. The body 1 is guided by one or more guide assemblies 11. The guidance is essentially along a straight line. The body 1 can be made substantially straight through the device. In order nevertheless to prevent the leakage of laser radiation, several protective measures are taken. On the one hand, the housing is closable. Other measures include the provision of the shielding arrangement and a Eintrittsabschirmanordnung 19 and an exit shield to order 20. In these each aperture 21 are provided. The dividing line 23 also passes through the entrance shield assembly 19 and the exit shield assembly 20. Preferably, the upper portion of the shield assembly of the entrance and exit is provided on the housing top and the lower portion of the shield assemblies 19 and 20 on the housing base. When the housing is opened, the housing and the shielding arrangements 19 and 20 thus separate along the parting line 23. When closing, the said components close along the parting line 23.
Fig. 3 shows a schematic view of the device according to the invention and / or the relevant parts of the device according to the invention along the section line C-C of Fig. 1. Here, the section is shown, the relevant parts comprises. In the housing 4, a laser assembly 22, guide assemblies 11 and Abschirmanordnungen 14 are provided. The body is guided by the guide assemblies 11 and possibly also by the Abschirmanordnungen 14. This guide is substantially rectilinear in the direction of the main extension axis of the elongated body 1. The guide device comprises guide wheels 12 which are preferably designed as guide rollers and counter-pressure rollers and act in pairs against each other. The distance between two paired guide wheels substantially corresponds to the thickness of the guided body 1. In order to adapt the guide assembly to the thickness of the body, at least one of the paired guide wheels is arranged to be movable. The guide assembly can be opened, the body can be inserted laterally, and the movably arranged guide wheel can be pressed onto the body to clamp the body between the paired guide wheels.
14 50 804 GP / GA
Furthermore, one of the guide wheels, preferably the counter-pressure roller, may be formed as part of a movement measuring device. This measures by rolling the wheel, the distance traveled by the body 1. In particular, the distance traveled per time can be measured.
The shielding arrangements each comprise a plurality of shielding elements. In the present embodiment, four shielding elements are arranged per shielding arrangement, only three being visible in the present section. The shielding arrangement is designed to be openable. At least one, preferably a plurality of shielding elements are designed to be movable in order to enable imports of the body 1 also transversely to the direction of movement. The right in this illustration shielding 14 is shown in the open position. The shielding arrangement on the left is shown closed. In the present embodiment, the shielding elements are formed as flexible rollers. These are positioned in such a way to the body 1, so that the elements lie against the body and / or are at least partially pressed by them. Due to the flexible design of the shielding, the surface of the
Shielding element to the surface of the body. The shielding elements are thus at least partially adapted to the surface shape of the body 1. In the present embodiment, the shielding arrangements each comprise four shielding elements, which in turn act in pairs against each other. For example, a first shielding element 15 and a second shielding element 16 are formed roller-shaped, wherein the rotatably arranged rollers each have an axis of rotation which is substantially orthogonal to the direction of movement of the body 1. Further, the axes pass through the axes of rotation of the cylindrical outer surfaces of the rollers. The two axes are essentially parallel. The distance between the two shielding elements is at least smaller than the thickness of the body in this area. Preferably, the rollers touch each other even when not inserted body. This prevents the leakage of laser radiation when the body is not inserted. Even when the body is inserted, the rollers can touch each other in that area in which they do not rest on the body 1. This increases the safety against the leakage of laser radiation. As a result, the rollers are pressed against the body and partially enclose it in each case. This is illustrated by the rectilinear portion of the roller in the range «φ φ ··· Ι · ΦΦ ♦ · · · · ·« «« «« «« · · · · · ··· «• · · 0 4 Φ I ♦ 4 4 4
15 ........... 50 804 GP / GA of the body 2. As the body 1 moves, the rollers rotate and roll on the body 1. The body is touched by the rollers along a portion of its circumference.
A second pair of rollers, and their axes of rotation are arranged rotated substantially 90 ° to the first pair of rollers. The axes of rotation of the third shielding element 17 and of the fourth shielding element 18 are also orthogonal to the direction of movement of the body 1. In the present illustration, only the fourth shielding element 18 can be seen due to the cutting guide. Basically, the arrangement of the rollers is not limited to the illustrated embodiment. It is suitable for any arrangement of the rollers which allows a contact of the body 1 along its entire circumference.
Furthermore, an inlet opening 8, an outlet opening 9, an inlet screening arrangement 19 and an outlet screening arrangement 20 are provided. The shield assemblies include apertures 21. Together with the shield assemblies 14, they are arranged to prevent leakage of the laser light, particularly along the main extension direction of the body 1. The diaphragms 21 also have a gap to the body 1. In order to prevent leakage of laser radiation through this gap, the shielding elements 15, 16, 17, 18 of the shielding arrangement 14 are provided. The shielding elements contact the body 1, whereby there is no gap between the shielding elements and the body 1.
Fig. 4 shows an oblique view of an opened device according to the invention. In this case, the housing lower part 6 is rigidly connected to the housing 4 or to the base frame 7. The upper housing part 5 is raised in this position and not shown. In the housing 4, in turn, a body 1, guided in a guide assembly 11, is arranged. This includes paired guide wheels 12 wherein preferably one of the guide wheels is a wheel of a movement measuring device 13. This measures, as noted, the speed and / or the distance traveled by the body 1. Furthermore, a shielding arrangement 14 is provided in each case in the region of the inlet opening 8 and the outlet opening 9. These shielding arrangements each comprise a plurality of shielding elements. The in the φφφφ · φ φ φ * φ · «· φ φ φ« φ φ · ♦ · · φ · «φ φ * · ♦« · # # φ «♦ φ * * φ φ ·· *
16 ........... 50 804 GP / GA present illustration left shielding is shown in the closed position. The right shielding assembly 14 is shown in the open position. Both shielding arrangements can be opened and closed.
The shielding elements are arranged in pairs and executed roller-shaped. The rollers comprise a relatively soft material, which in particular is softer than the body 1. Upon contact of the rollers with the body they are pressed. In the right shielding assembly 14, the second shielding member 16 and the third shielding member 17 are folded downwardly. By closing the folding mechanism, this shielding arrangement can be closed, thus essentially corresponding to the screening arrangement shown on the left.
In the region of the inlet opening 8 Eintrittsabschirmanordnung 19 is provided with aperture 21. The panels 21 have an opening and / or an exemption, which substantially corresponds to the cross section of the body. However, a portion of the entrance shield assembly and its associated apertures 21 are disposed on the housing bottom and one on the housing top. Only by closing the housing, the shield assembly is completed. The clearances in the merged diaphragms essentially correspond to the cross-section of the body 1. However, some excess is necessary to avoid contact of the body with the diaphragms. This oversize results in a gap between the body and the entrance shield assembly. In order to avoid leakage of laser light through this gap, a shielding arrangement 14 is provided.
The same applies to the exit screen arrangement 20, which is provided in the region of the outlet opening 9. Also, this includes apertures 21 which have by exiting the housing an exemption, which correspond substantially to the cross section of the body with a certain excess. This gap is also preferably closed by the shielding arrangement 14 for an exit of the laser light.
The body 1 is shown schematically in this drawing and broken off in the region of the inlet and outlet openings. In practice, elongated bodies are used whose length substantially corresponds to a multiple of the width of the present arrangement. In particular, endless bodies such as tapes, cables, cables, etc. can be processed by the present device. The laser or machining area 26 in which the body is processed by the laser is provided in the area between the shielding arrangements 14. The laser radiation is directed onto the jacket or onto a section of the jacket of the body 1 which lies in the processing region 26 of the device. The radiation can be used to process the surface of the body. In particular, the control of the laser arrangement is synchronized or coupled with the movement of the body 1.
FIGS. 5a to 5c show different views of a possible embodiment of a shielding arrangement 14. FIG. 5a shows a view from the front with a first shielding element 15, a second shielding element 16 and a third shielding element 17. The fourth shielding element 18 is behind in this view third shielding 17 lying - and not visible. The body 1 is passed through the shield assembly 14. Due to the elastic configuration of the cylindrical shielding elements, the body 1 is at least partially enclosed. Fig. B shows a further view, wherein the viewing direction is substantially parallel to the longitudinal extent and to the direction of movement 3 of the body 1. Again arranged in pairs in each case four shielding elements. A first shielding element 15 which presses against a second shielding element 16 and a third shielding element 17 which presses against a fourth shielding element 18. In the region of the body 1, the shielding elements are pressed in and formed essentially following the body. Nevertheless, the shielding elements have a certain rigidity. This results in minimal column areas 25. In order to close also these column areas 25, the second pair of rollers, which comprises the third and the fourth shielding element 17, 18, 90 ° twisted arranged to the first pair of shielding elements. This configuration represents a possibility of shielding laser radiation around the body parallel to the direction of movement. In order to achieve the technical effect of the shielding, it is important that at least each subregion of the lateral surface 2 of the body 1 contacts a shielding arrangement 14 and / or a shielding element is. ftft ···· * · * ···· • «ft ft« ft · ft · · ·
18 ......... '* 50 804 GP / GA
FIG. 5 c shows the oblique view of the embodiment of the shielding arrangement 14 with a plurality of shielding elements acting in pairs against one another and a body 1 passed through. FIG.
The embodiment of the shielding elements as rollers is a possible embodiment. For example, instead of rotating rollers and stationary rollers can be used. Also brush-shaped body and iris-shaped body which are arranged around the body 1 can be used. The rotating rollers have the advantage over fixed brushes or grinding elements that less slip occurs between the moving body and the shielding element due to the rotation. The slip inevitably results in friction and in wear or tear on the shielding or on the surface of the body. Especially with hard, smooth bodies, however, the provision of brushes or fixed foam bodies is possible.
At this point it should be noted that the invention is not limited to the stated embodiments. Further embodiments corresponding to the concept of the invention also result from combinations of individual or several features which can be taken from the entire description, the figures and / or the claims. Thus, embodiments are disclosed that consist of combinations of features that come from different embodiments. The figures are at least partially schematic representations, wherein the dimensions and proportions of other, not graphically illustrated, embodiments or features as well as real versions may differ. 1. body 2. lateral surface (of the body) 3. direction of movement 4. housing 5. housing Top 6. Go. Lower part 7. Base frame 8. Inlet opening 9. Outlet opening 10. Handle 11. Guiding arrangement 12. Guide wheel 13. Motion measuring device 14. Shielding arrangement 15. First shielding element 16. Second shielding element 17. Third shielding element 18. Fourth shielding element 19. Entry shielding arrangement 20. Exit shielding arrangement 21 Aperture (shielding arrangement) 22. Laser arrangement 23. Dividing line (housing) 24. Control unit 25. Column area 26. Machining area

权利要求:
Claims (16)
[1]
1. A device for marking elongate bodies (1) such as rods, bands, cables, cables and the like with a substantially closed housing (4) having an inlet opening (8) and an outlet opening (9) for the passage of the body ( 1) and with a laser arrangement (22) for processing the lateral surface of the body (1), characterized in that the body is guided substantially rectilinearly through the housing (4) and that at least one shielding arrangement (14) for shielding and / or Attenuation of along the lateral surface (2) of the body (1) extending laser radiation is provided,
[2]
2. Apparatus according to claim 1, characterized in that the inlet opening and / or the outlet opening are made larger than the profile of the body (1) and that an exit of laser radiation through the gap between the body (1) and the inlet opening and / or the outlet opening is prevented by the screening arrangement.
[3]
3. Device according to claim 1 or 2, characterized in that the shielding arrangement (14) comprises at least one shielding element (15, 16, 17, 18) which contacts the body on its lateral surface (2).
[4]
4. Device according to one of claims 1 to 3, characterized in that the shielding arrangement (14) contacts the body (1) along its entire circumference.
[5]
5. Device according to one of claims 1 to 4, characterized in that the body (1) of the laser assembly (22) in a processing area (26) is processed, wherein the processing area {26) in the housing (4). 21 50 804 GP / GA
[6]
6. Device according to one of claims 1 to 5, characterized in that along the body between the processing area (26) and the inlet opening (8) and / or between the processing area {26) and the outlet opening (9) a shielding arrangement (14). is provided.
[7]
7. Device according to one of claims 1 to 6, characterized in that at least one guide arrangement for guiding the body is provided in or through the housing.
[8]
8. Device according to one of claims 1 to 7, characterized in that the housing {4) is designed to be openable to allow the insertion of the body (1) transversely to the direction of movement (3) of the body (1).
[9]
9. Device according to one of claims 1 to 8, characterized in that the shielding arrangement (14) and optionally the guide arrangement (11) are designed openable to the insertion of the body (1) transversely to the direction of movement (3) of the body (1). to enable.
[10]
10. Device according to one of claims 1 to 9, characterized in that the shielding elements (14) comprise elastic or soft material which yields upon contact with the body (1) and the body (1) optionally along a portion of the lateral surface (2 ) touched.
[11]
11. Device according to one of claims 1 to 10, characterized in that the shielding elements are designed as rollers, brushes, elastic body and / or hollow cylinder.
[12]
12. Device according to one of claims 1 to 11, characterized in that the shielding elements (14, 15, 16, 17) are designed as rotatable rollers which roll upon movement of the body (1) on this.
[13]
13. Device according to one of claims 1 to 12, characterized in that the shielding elements (14,15, 16, 17) are arranged in pairs on diametrically opposite sides of the body (1), wherein the distance between two paired shielding elements (14 , 15, 16, 17) is smaller than the diameter of the body (1) in this area. • ·

22 50 804 GP / GA
[14]
14. Device according to one of claims 1 to 13, characterized in that a movement measuring device (13) for measuring the movement of the body (1) is provided.
[15]
15. Device according to one of claims 1 to 14, characterized in that a control unit (24) for controlling the laser assembly (22), for synchronization or coupling with the movement measuring device (13) and / or for activating the laser arrangement in closed Abschirmanordnungen and / / or closed housing is provided.
[16]
16. Device according to one of claims 1 to 15, characterized in that the marking of the body (1) continuously, by movement of the body (1) in the direction of movement (3) through the processing area (26). VI. .Jan. 2012 Patent Attorneys

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同族专利:

公开号 | 公开日

WO2013104581A1|2013-07-18|

AT512386B1|2016-09-15|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

DE3147230A1|1981-11-28|1983-06-09|Messerschmitt-Bölkow-Blohm GmbH, 8000 München|Method for applying characters to an elongated object|

EP1705600A2|2005-03-23|2006-09-27|Datacard Corporation|High-rate laser marking machine|

WO2011045098A1|2009-10-13|2011-04-21|Trumpf Werkzeugmaschinen Gmbh + Co. Kg|Shielding device on a machining head, a machining head, and machine tool comprising a shielding device|WO2021175557A1|2020-03-06|2021-09-10|Trumpf Werkzeugmaschinen Gmbh + Co. Kg|Laser machine tool for machining workpieces|DE2511004C2|1975-03-13|1977-03-24|Kieserling & Albrecht|PROCESS AND EQUIPMENT FOR THERMAL REMOVAL OF SURFACE CONTAMINATION ON IN PARTICULAR HOT-ROLLED STRAND MATERIAL WITH A CIRCULAR OR APPROXIMATELY CIRCULAR CROSS SECTION|

US5049721A|1989-09-18|1991-09-17|American Telephone And Telegraph Company|Laser marking apparatus and method for providing markings of enhanced readability in an outer jacket of a moving cable|

US5474627A|1990-10-11|1995-12-12|Aerospatiale Societe Nationale Industrielle|Method for marking an electric cable|CN105023656A|2015-07-07|2015-11-04|江苏亨通电力电缆有限公司|High-reliability surface printing method for coal mine rubber sleeve cable|

CN106475687B|2016-12-28|2018-08-24|中科芯集成电路股份有限公司|Laser marking device|

CN111230325A|2020-01-19|2020-06-05|上海锡喜材料科技有限公司|Technological invention about CCGA welding column|

法律状态:
2021-09-15| MM01| Lapse because of not paying annual fees|Effective date: 20210112 |

优先权:

申请号 | 申请日 | 专利标题

ATA25/2012A|AT512386B1|2012-01-12|2012-01-12|DEVICE FOR LASER MARKING OF LONG-SLIDE BODIES|ATA25/2012A| AT512386B1|2012-01-12|2012-01-12|DEVICE FOR LASER MARKING OF LONG-SLIDE BODIES|

PCT/EP2013/050150| WO2013104581A1|2012-01-12|2013-01-07|Device for the laser marking of elongated bodies|

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