WO2012150173A1

WO2012150173A1 - Laser processing device having a laser head arranged on a moving unit and having a removal unit

Info

Publication number: WO2012150173A1
Application number: PCT/EP2012/057632
Authority: WO
Inventors: Andreas Wienkamp
Original assignee: Cero Gmbh
Priority date: 2011-05-05
Filing date: 2012-04-26
Publication date: 2012-11-08
Also published as: DE202011100305U1

Abstract

The invention relates to a laser processing device, which is equipped with a frame (6, 7), at least one moving unit (8) that can be moved relative to the frame (6, 7), at least one laser head (2) arranged on the moving unit (2), and a removal magazine (4) for accommodating workpieces (1) to be processed by means of the laser head (2). The moving unit (8) is designed to automatically and continually remove the respective workpiece (1) to be processed from the removal magazine (4).

Description

LASER PROCESSING DEVICE WITH LASER HEAD ARRANGED ON A MOTION UNIT AND REMOVAL UNIT

Description:

The invention relates to a laser processing device, comprising a frame, at least one movement unit movable relative to the frame, at least one laser head arranged on the movement unit, and workpieces to be machined with a removal magazine for recording by means of the laser head.

A laser processing device of the construction described above has become known in principle by the utility model DE 20 2008 003 143 U1. The local motion unit is one which has one or more axes of motion and carries the laser head. In addition, one or more workpiece feeds are provided, which cooperate with a magazine. Overall, it is about achieving a higher accuracy in the beam guidance. In a method and a device for processing optical elements with electromagnetic radiation according to DE 101 35 606 B4, it is essentially a question of heating the optical element to a first temperature value before the beginning or at the beginning of the machining process. In conjunction with a second temperature value occurring during material processing, this should prevent damage to the optical element caused by thermally induced stresses.

In the context of DE 10 2055 009 696 B3, the procedure is that several lasers are arranged in a holder. In this case, individual working areas of the plurality of lasers can adjoin one another or overlap.

DE 1 0 2006 041 657 A1 finally describes a method and a device for aligning a flat table surface. In this case, a first and a second position sensor are provided. The table surface can be adjusted in height and also tilted.

The state of the art has basically proven itself with regard to the use of lasers in conjunction with a processing device. However, the individual processing steps are often time-consuming, so that the replenishment of workpieces to be machined and the removal of processed workpieces takes place in relatively large time intervals. An operator therefore only has to act sporadically. This increases the production costs. Here, the invention aims to provide a total remedy.

The invention is based on the technical problem of further developing a laser processing device of the structure described at the outset and of the embodiment described so that the production costs and in particular the unit costs per workpiece are reduced.

To solve this technical problem, a generic laser processing device in the invention is characterized in that the movable relative to the frame movement unit for automatic and continuous removal of the respective workpieces to be machined from the removal magazine is set up. In the framework of the invention, the unit of motion thus fulfills a quasi-dual function. First of all, it ensures that the laser head is guided in relation to the frame, and I therefore make sure that the workpiece on the frame can be processed with the aid of the laser head in accordance with the specifications. In addition, the

Moving unit as a removal device for the workpieces to be machined from the removal magazine. In addition, the movement unit may also be responsible for the return of the machined workpieces in the removal magazine back.

In most cases, the movement unit is not only capable of automatically and continuously removing the workpieces to be processed in each case. But according to an advantageous embodiment, the movement unit is also set up for the automatic and continuous output of the respectively processed workpiece to the removal magazine and / or an output magazine.

In principle, it is possible to work with a dispensing magazine and an independent and separately designed dispensing magazine. However, it is particularly preferred if the removal magazine is designed as a combined removal / dispensing magazine. In this case, the combined removal / dispensing magazine thus takes over both the task of stocking the workpieces to be processed and the storage of already processed workpieces. In this case, the invention is based on the recognition that the combined removal / dispensing magazine is equipped with a plurality of magazine compartments which each receive a workpiece. At the beginning of the machining process, the workpiece located in the magazine compartments is unprocessed. After completion of the machining of all workpieces, the individual magazine compartments are filled with respectively processed workpieces. This process can take several hours and, for example, overnight. This depends on the selected capacity of the combined withdrawal / issue magazine or that of the withdrawal magazine as well as the issue magazine. Typically, the capacity will be adjusted to the desired

adjust interrupted processing time, d. H. to the time that is required for all unprocessed or machined workpieces located in the removal magazine to have been processed. Due to the design of the movement unit for automatic and continuous removal of the respective workpieces to be machined and according to an advantageous design for automatic and continuous output of the respective machined workpiece, the laser processing device according to the invention virtually unmanned and without the intervention of an operator, the entire contents of the magazine or the combined removal - / output magazine without interruption and fully automatically process. This is also possible during night hours, for example, so that the processing costs per workpiece could be significantly reduced in comparison to the previous procedure according to the prior art.

The processing of the respective workpiece with the aid of the at least one laser head takes place on the surface and / or in the interior of the workpiece in question. Both a surface engraving and an interior engraving as well as a combination of both processes come into question. In principle, for this purpose, one or more laser heads can be combined, which are arranged on the one movement unit or also on two movement units which can be moved independently of one another and in each case relative to the frame. The multiple laser heads or several movement units can also be used to increase productivity. This is true even if only one rack is used. The laser heads can therefore move together or be designed independently of each other.

In this context, one of two laser heads can be used for internal engraving, whereas the other laser head is responsible for the surface treatment. Both processes are comprehensively described in the prior art so that reference may be made to the statements there. I n things the surface design should be mentioned in DE 39 17 774 A1. With regard to the interior engraving, reference is made to EP 1 856 199 B1.

In order to maintain the described fully automatic operation even more advantageously, it has proven useful if the respective workpiece is equipped with a specific identification code. This identification code can be read out by a reading unit and converted into, for example, a machining program. The identification code may be any product-specific identifier, such as a bar code, a matrix code, an order number, etc. This identification code, for example barcode, can be read by the reading unit, in the example case a barcode reader.

By means of the identification code, a control unit as part of the laser processing device is able to call up the machining program stored in the identification code or to the machining program associated with the identification code and to take it into account when machining the associated workpiece. The workpiece as such may be glass plates, glass sheets, plastic sheets, mirrors, etc. In principle, all materials for the workpieces can be used or realized, which allow laser processing, such as glass, plastics, but also wood, stone, etc. In any case, with the help of the identification code, the processing of the respective workpiece can be controlled and desired machining program queried and

be implemented. In this case, the corresponding data can be read by machine from the identification code with the aid of the reading unit and, in conjunction with the control unit, ensure that the corresponding processing program is immediately called up and executed in the example case.

For the purpose of a particularly compact construction, the reading unit is arranged on the frame and / or on the moving unit. In fact, the moving unit is advantageously a mobile bridge which engages over the frame. The frame as such may be designed predominantly as a frame table, thus typically has a plate or table top on which the workpiece to be machined is stored.

Mostly, the bridge is moved linearly along lateral guides. The two lateral guides can be found on opposite sides of the frame. In fact, it has proven useful if the two lateral guides are arranged on the longitudinal sides of the table-top-like frame, so that the movement unit or the movable bridge realized at this point is designed to be movable along these longitudinal sides. In this context, any arrangements and orientations of the frame are generally conceivable and are encompassed by the invention. Thus, the table-like frame can be arranged horizontally and the workpieces to be processed are placed on this and lifted off again. According to a particularly advantageous embodiment, the frame including the movement unit has an inclined position relative to the vertical.

By this inclination are mostly plate-like workpieces, such as glass plates, with a predetermined inclination to the frame and can be easily grasped and stored by the movable relative to the frame movement unit or bridge. At the same time succeeds the

Issue of each machined workpiece to the magazine or usually the combined removal / output magazine easily, without that usually complementary lifting movements are performed. In fact, the movement unit in this context usually works exclusively pushing and / or pulling, because the individual magazine compartments in the magazine or in the combined removal / output magazine also have an inclined position, which is adapted to the inclination of the frame.

That is, the inclination of the magazine compartments corresponds substantially to the inclination of the frame or the table-like frame. In this way, the workpieces can easily pull on the table-like frame with the help of the movement unit for processing and after processing again in the similar tilted magazine compartments einsch ieb. This gel is particularly easy and easy to supplement by the fact that the frame is equipped with several support elements for the workpiece. These support elements may be metal rollers, which are typically equipped with a running surface made of silicone, rubber, etc. This may be an O-ring, which can easily be replaced in case of damage without much installation effort.

In addition to the already mentioned reading unit for the identification code, at least one measuring unit is usually provided. For example, the dimensions of the workpiece and / or its flatness and / or its transparency and / or comparable workpiece properties can be detected with the aid of the measuring unit. The measured values determined by the measuring unit are transferred to the control unit and provide for a

trouble-free and damage-free processing in the course of the machining program selected using the identification code.

In this context, the at least one measuring unit is arranged on the movement unit. In contrast, the reading unit is typically found on the frame. In most cases, the reading unit is embedded in a tabletop as part of the frame, respectively arranged on this table top and can read in this way the usually provided on the back of the workpiece specific identification code. This identification code may be present as a barcode applied to a label.

In contrast, the measuring unit is regularly found on a surface of the bridge formed as a movement unit, which faces the workpiece. The measuring unit may be a non-contact, preferably optical, sensor. This can for example by means of a laser triangulation, by a confocal measurement, by means of a capacitive measurement or by ultrasonic waves, the workpiece in terms of size, flatness, etc. capture. Knowledge of the size of the workpiece is required in order to carry out a plausibility check and / or quality control.

In addition, the workpiece size detected with the aid of the measuring unit ultimately predetermines a processing field which is to be swept by the laser head to a maximum extent. That is, the laser head may only be moved in the active state within the edit field, for example, to avoid damage outside the edit field. In addition, it is possible with the measuring unit to change, for example, the distance of the laser head from the workpiece on the basis of the measured values recorded, and / or to trace them if necessary.

regulate. In this case, a distance measurement and a comparison with target values takes place.

As a result, the invention u. a. It is certain that the laser head which is active, for example, beyond the workpiece to be machined does not damage the frame or the individual support elements. In addition, conclusions can be drawn from the flatness measurement on the distance between the laser head and the surface of the workpiece to be machined. In fact, both the surface engraving and the internal engraving of the workpiece require compliance with a previously well-defined distance of the laser head from the surface of the workpiece. In order to ensure and ensure compliance with this distance, the flatness of the workpiece and / or the distance to the measuring unit are largely detected beforehand with the aid of the measuring unit. In this way, the laser head can be readjusted if necessary in the direction of the surface of the workpiece. The described distance measurement can be carried out not only before the actual engraving process but also during the written process.

For this purpose, the laser head can be moved perpendicular to the surface of the workpiece. In addition, in addition to this movability in the same Z-direction as such in the X and Y directions possible, with the help of the bridge or movement unit. The X and Y directions are arranged in a plane spanned by the frame. Because the laser head can be moved along the bridge and transversely to the longitudinal orientation of the frame and may be equipped for this purpose, for example, with an appropriate guide means. An additional movability in the longitudinal extension of the frame

is thereby possible that the movement unit or bridge can be moved as a whole along the lateral guides.

Alternatively or additionally, the measuring unit already described can also be used to detect the position of individual or all laser markings produced on the surface and / or in the interior of the workpiece by means of the laser head. This makes it possible to check whether the processing field is maintained by comparing an actual value for the position of the laser marking with a desired value stored or predetermined, for example. In addition, the position of individual laser heads can be readjusted or calibrated in the event of deviations from the associated desired values. For all these purposes, the measuring unit or an alternative or additional measuring device detects the laser beam or is struck by it.

In the context of the invention, the term laser head generally means the actual laser source with a possibly upstream objective unit or beam deflection unit. Alternatively or additionally, however, the laser head may also include a mirror unit or another beam guiding device with the aid of which the laser beam generated by the laser source is directed onto the workpiece to be machined. In addition, the laser head can be composed of the actual laser source and a lens as an objective unit. In addition, the term laser head considers a laser source in conjunction with a galvanometer mirror unit for beam deflection. The galvanometer mirror unit or galvanometer unit may be equipped with an f-theta lens or a telecentric lens. In this context, the lens and / or the Galvanometerkopf or the Galvanometereinheit can be moved, wherein the laser beam is supplied from the laser source via Umlen kspiegel. This sets a particularly small moving mass.

Since the laser head is arranged on the movement unit, the beam guiding device provided alternatively or additionally together with the movement unit may altogether provide for guiding the laser beam over the surface of the workpiece. In principle, the moving unit and the beam guiding device can be moved independently of each other. In addition, the movement unit or the bridge realized on this site is regularly equipped with a housing. This not only protects the individual components inside. But the processing area acted upon by the laser head undergoes a shield, so that there is no danger from escaping laser radiation. This serves to protect any operators who can even work without goggles. In connection with the use of the measuring unit for examining the workpiece in terms of its dimensions and / or the flatness and / or transparency of the workpiece, it is conceivable and within the scope of the invention that a desired / actual value comparison is made. If, for example, the measured actual values of the dimensions of the workpiece deviate from the setpoint values stored in the control unit, a message can be output to the control unit. The same applies to the case where the measured flatness of the workpiece is not within specified tolerances. With the help of the control unit, this message can of course also be transmitted to remote locations, for example, via conventional telecommunications channels, the Internet, telephone, etc. At the same time not the workpiece corresponding to the default values may be reset during processing and will instead another workpiece from the removal -

magazine removed and edited. This ensures that, for example, in the case of an unmanned operation of the laser processing device (at night), the operation still continues and at least the workpieces lying within the standard experience the desired processing.

In this context, it is additionally conceivable that in the control unit information about the deviations of the respective workpiece from the standard, its subsequent position in the magazine compartment, etc. are stored. An operator can easily access this information and subsequently sort out the possibly defective workpieces without the machining process itself having to be stopped or having to be stopped. The reading unit and / or the measuring unit are thus connected to the control unit as output device, which outputs, for example, a message at actual values deviating from predetermined nominal values.

In addition, the knowledge of the exact dimensions of the workpiece to be machined opens the possibility to align the workpiece on the frame depending on the dimensions concerned. At the same time, the movement unit in this context may ensure that the workpiece is placed aligned with the frame with respect to the position of the support elements. In this way, damage to one or more support elements is reliably avoided, for example, in the case of a laser process bordering an edge of the workpiece. Because you will usually proceed so that individual or all edges of the workpiece are selectively positioned between the support elements.

For removal and output of the workpieces, the movement unit is advantageously equipped with at least one gripper element. In principle, however, the at least one gripping element can also be independent of the movement unit

be designed. This gripper element may also be equipped with a sensor and in particular a pressure sensor. In this way, any glass breakage or malfunction in the removal / output of the workpiece is monitored. The questionable sensor or pressure sensor, like the reading unit and the measuring unit, is connected to the already mentioned control unit.

In this way, the control unit is aware of any deviations from the norm, be it as regards the workpiece as such or as far as the machining process is concerned. Related information may be transmitted by the control unit to an operator, for example wirelessly transmitted to a mobile telephone.

In addition, the movement unit advantageously has an extraction / blowing device arranged thereon. The suction device may be equipped with a filter and particulate filter in particular. The suction device is usually associated with a laser head associated lens unit and ensures that the suction is made directly in the lens unit. In fact, work is usually carried out here with a suction in the cross-flow, in order to be able to suck off any particles produced during the laser processing from the outset and, as it were, transversely, so that they can not reach the objective unit at all. The actual filter or particle filter is predominantly located locally separate from the lens unit, for example in the region of a stationary suction source.

At the same time as the extraction, in the area of the objective unit, alternatively or additionally, a targeted air flow can also be set with the aid of the blowing device. The air flow prevents the lens unit from being contaminated by any machining dusts, dirt particles, etc. Thereby are

additional fans are not required and the suction / blowing device works exactly in the area of the laser head or its lens unit. That is, the suction / blowing device follows the laser head or the associated lens unit and thus operates exactly where the workpiece with the help of the laser undergoes the desired engraving.

Finally, it is self-evident in the context of the invention to equip the laser processing device described not only with a laser head, but with a plurality of laser heads. In addition, in principle, more than one movement unit can be provided, which are designed to be movable independently of one another relative to the frame. It is within the scope of the invention to arrange two or more laser heads on one and the same movement unit, for example, to perform a surface engraving and an interior engraving can. The invention also justifies the possibility of providing a separate movement unit for each laser head with the frame in each case matching. In this case, the two movement units and of course the associated laser heads are designed to be movable independently of one another. This also applies to the former case.

As a result, a laser processing device is provided which enables fully automatic operation. For this purpose, the moving unit for automatic and continuous removal and, advantageously, also for the automatic and continuous dispensing of the workpieces from the magazine and into the magazine or the combined dispensing Z dispensing magazine is suitable. In order to remove the individual workpieces and then to be able to output again, the combined extraction / dispensing magazine may be connected to the frame in a movable manner and is moved step by step. During this process, the respectively required magazine compartment becomes the surface of the magazine

Aligned frames. The movement of the magazine may be predetermined and adjusted with the help of the control unit.

The workpiece as such typically rests not only on the surface arranged over the frame or at this point realized table top arranged support elements. Rather, a pad attached to the table top is regularly provided as part of the frame in addition to the table top. The support usually has rollers or comparable sliding elements, which allow the removal of the workpiece from the magazine by means of the arranged on the moving unit gripper element as well as the output of the machined workpiece to the magazine. The sliding elements or rollers in question are designed to be passive and are braked after removal or insertion of the workpiece and also during manual installation of the workpiece. Here are the main benefits.

In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment; show it:

1 shows the laser processing device according to the invention in one

Overview,

Figure 2 is a side view of the article of Figure 1 and Figure 3 is a front view of the article of Figures 1 and 2.

In the figures, a laser processing device is shown, that is a device for processing workpieces 1 by means of a laser head 2. The laser head 2 is associated with an objective unit 3 or downstream, with the help of which the laser head 2 leaving laser beam on a surface

and / or is focused into the interior of the workpiece 1. In the first case, a surface engraving of the workpiece 1 takes place, whereas the latter variant corresponds to an interior engraving. The workpieces 1 to be machined in the exemplary embodiment are plates 1 made of glass, plastic or comparable materials. The workpieces 1 to be processed are stored for this purpose in a removal magazine 4, which is equipped with a plurality of magazine compartments 5. In the embodiment, the removal magazine or magazine 4 is a combined removal / dispensing magazine 4. That is to say, the magazine 4 serves both to store the workpieces 1 to be processed and to store the already processed workpieces 1 after processing , This will be explained in more detail below. For the basic structure of the laser processing device also includes a frame 6, 7, which is composed in the embodiment of a table top 6 and connected to the table top 6 edition 7. The support 7 is mostly perpendicular to the contrast flat-topped table 6 is connected. In fact, the table top 6 and the support 7 have an L-shaped cross section.

In addition to the frame 6, 7 a relative to the frame 6, 7 movable movement unit 8 is provided. The movement unit 8 carries the laser head 2 and additionally the lens unit 3. In this case, the laser head 2 and the lens unit 3 are inside a housing 9, which covers the laser head 2 including lens unit 3 and protects against unauthorized access. At the same time, this protected application ensures that, for example, no laser radiation can escape.

The mobility of the movement unit 8 relative to the frame 6, 7 is made possible by lateral guides 10. In fact, the moving unit 8 is designed as a mobile bridge 8 that overlaps the frame 6, 7. To guide the bridge 8, the two lateral guides 10 are provided, along which the bridge 8 can be moved linearly. The two lateral guides 10 each extend along the longitudinal edge sides of the rectangular table top 6. In this way, the movement unit or bridge 8 can be moved in an associated X direction. Of course, the same also applies to the laser head 2 moved together with the movement unit 8 and to the upstream objective unit 3.

In addition to this movement in the X direction, the laser head 2 including the objective unit 3 can also be moved in the Y direction. For this purpose, the laser head 2 including objective unit 3 may be moved along an associated guide 1 1 arranged in the interior of the housing 9. The Y direction corresponds to the transverse direction of the rectangular table top 6. Finally, the laser head 2 including the objective unit 3 can also be set and moved in its height relative to the plate or the workpiece 1. For this purpose, a movement in the Z direction corresponds, as indicated in FIG.

Of particular importance for the invention is now the fact that the movement unit or the bridge 8 for the automatic and continuous removal of the respective workpiece 1 to be machined from the magazine or from the combined removal / output magazine 4 in the shown example is set up. In addition, the movement unit 8 in question is also capable of automatically and continuously dispensing the respectively processed workpiece 1 to the combined removal / dispensing magazine 4. For this purpose, a control unit 12 is provided, which

tables and continuous removal of the workpiece to be machined 1 and its output after processing controls and ensures.

In order to achieve this in detail, the respective workpiece 1 has a specific identification code which is not explicitly shown in the example. This may be printed directly on the workpiece 1. In most cases, the barcode is found on a label which has been removably applied to the back of the workpiece 1, for example. The identification code or barcode in question can be read out with the aid of a reading unit 13. The reading unit 13 is arranged for this purpose on the table top 6, for example, may be embedded in the table top 6. In this way, the reading unit 13 is able to read the attached backwards to the workpiece 1 barcode, as soon as the workpiece 1 is moved in the direction of the table top 6.

In principle, however, the reading unit 13 can also be moved together with the laser head 2 and the associated objective unit 3 in the Y and Z directions and optionally in the X direction. This is not shown. In any case, with the aid of the reading unit 13, as explained, the identification code assigned to the workpiece 1 is read out. This identification code may correspond to a specific processing program which is stored in the control unit 12. Thus, as soon as the identification code has been read out with the aid of the reading unit 13, the control unit 12 "knows" which surface engraving and / or internal engraving the workpiece 1 should receive. As a consequence of this, the control unit 1 2 loads the laser head 2 or the laser head 2 including the objective unit 3 in a corresponding manner in order to process the associated machining program as soon as the workpiece 1 on the frame 6, 7 has reached its machining position.

In addition to the reading unit 13, it is also possible to provide at least one measuring unit 14, which is likewise arranged on the moving unit 8. Like the reading unit 13 and also the laser head 2 including the objective unit 3, the measuring unit 14 is also located on the movement unit or the bridge 8 and, together with the latter, is moved linearly in the X direction along the lateral guides 10. In addition, the measuring unit 14 is again protected inside the housing 9 is arranged. An additional mobility of the measuring unit 14 in the Y-direction and Z-direction additionally provided in the example shown, however, however, not absolutely necessary.

With the help of the measuring unit 14, dimensions of the workpiece 1 and / or its flatness can be detected. For this purpose, the measuring unit 14 may be formed as an optical distance sensor, ultrasonic sensor, etc. In any case, with the aid of the measuring unit 14, the workpiece 1 can be checked as to whether its dimensions correspond to predefined setpoint values. The same applies to the flatness of the workpiece 1. The actual values detected by the measuring unit 14 are for this purpose transmitted to the control unit 12, in which associated desired values are stored and a desired / actual value comparison takes place. If the workpiece 1 corresponds to the stored specifications, the processing of the workpiece 1 is made, namely on the basis of the selected by means of the identification code and also stored in the control unit 12 processing program. On the other hand, if the workpiece 1 does not meet the specifications, the control unit 12 issues a corresponding message to an operator via all possible communication channels, for example by wireless communication to a mobile phone.

The reading unit 13 and also the measuring unit 14 are thus connected to the control unit 12, which in this context functions as output device 12. With the aid of the control unit or output device 12, the ange¬

Spoken message issued to, for example, an operator that deviating from one or more predetermined target values actual values for the workpiece 1 are present. The frame 6, 7 and the table top 6 is with several support elements

15 equipped. The support elements 15 are distributed over the entire table top 6 distributed over the entire surface. The support elements 15 are advantageously rollers, in particular metal rollers. The metal rollers may be equipped to protect the workpiece 1 with a coating in the form of an earring made of silicone, etc., which of course is not mandatory. The support elements 15 or (metal) rollers are arranged so that the workpiece 1 can easily slide over it in the X direction in order to reach the processing position or to be pushed into the associated magazine compartment 5 after processing. Basically, the support elements 15 are not driven and not braked designed.

To accomplish the removal of the respective workpiece 1 from the magazine 4 for processing and the output of the workpiece 1 after processing on the magazine 4, the moving unit 8 is equipped with at least one gripper element 16. In the context of the embodiment, only one gripper element 16 is provided, which is connected to the guide 1 1. The gripper element 1 6 is located in the embodiment adjacent to the support 7 of the frame 6, 7. In addition, the gripper element

16 associated with a pressure sensor 17 or a comparable sensor, by means of which a possible breakage of the workpiece 1 during the removal / output can be determined. For this purpose, the sensor 17 in question as well as the gripper element 16 is connected to the control unit 12.

Finally, the movement unit 8 is also equipped with a suction / blowing device 18, which is associated with the objective unit 3 and is designed to be movable together with the laser head 2 and the objective unit 3 in the X, Y and Z directions. With the help of the suction / blowing device 18 any processing residues are sucked off and can generate a targeted air flow in the region of a focal point of the laser.

FIG. 2 makes it clear that the frame 6, 7 or the table top 6 of the frame 6, 7 is inclined relative to a vertical S. In fact, an angle α of the inclination of approximately 10 ° is observed in this context. This is of course only to be understood as illustrative and not restrictive. Due to this inclination, it is ensured that the plates or workpieces 1 placed on the table top 6 can be held thereon correctly. To this end, the circumstance contributes to the fact that the support 7 is equipped with additional sliding elements 19. These sliding elements 19 are, like the support elements 15, also rollers. Like the rollers 15, the rollers 19 are not driven, but after completion of the removal or insertion of the workpiece 1 to be machined, they ensure that it is braked and held. That is, the sliding elements 19 are braked, but designed not driven.

The operation is as follows. After loading the magazine or the combined removal / output magazine 4 with the workpieces 1 to be machined this is moved laterally to the frame 6, 7. In this case, a feed 20 for the magazine 4 can be used below to successively process the individual items 1 stored in the magazine compartments 5 and to transport them back into the associated magazine compartment 5 after processing. The feed 20 is connected to the control unit 12.

It can be seen that the individual magazine compartments 5 are arranged approximately level with the table top 6 of the frame 6, 7. That is, the magazine compartments 5 have compared to the vertical S and a frame 21 of the magazine 4 on a similar inclination as the table top 6 relative to the vertical S. That is, for the magazine compartments 5 is a comparable angle α of the inclination of about 10 ° as in the case of the tabletop 6 observed against the vertical S. In this way, a workpiece 1 to be machined with the aid of the gripper elements 16 can be taken out virtually from the magazine compartment 5 and conveyed onto the table top 6 virtually equally.

For this purpose, the gripper elements 16 need only be moved in the X direction with the aid of the gripper unit or bridge 8. Previously or later, the reading unit 13 has read out the identification code on the workpiece 1 or the plate 1 and transmitted it to the control unit 12. In addition, the workpiece 1 is detected by means of the measuring unit 14 in terms of size. In addition, the workpiece 1 can be subjected to a flatness measurement by resorting to the measuring unit 14. That is, the measuring unit 14 detects size and planarity of the workpiece 1. Of course, with the help of the measuring unit 14 also further characteristics of the workpiece 1 can be detected or checked. These include not only edges and outside dimensions, but, for example, holes in terms of position and position, protrusions, indentations etc ..

For this purpose, the workpiece 1 is first roughly deposited on the table top 6 and then the bridge 8 is moved together with the measuring unit 14. As a result, the workpiece 1 can subsequently be aligned and placed on the frame 6, 7 or the tabletop 6 in dependence on the workpiece dimensions and in dependence on the position of the support elements 1 5. As a rule, the filing of the workpiece 1 on the frame 6, 7 in

made a move. Because in the control unit 1 2 the h ierfür for required dimensions and values are stored. In fact, one will choose the position of the workpiece 1 on the table top 6 so that any edges of the workpiece 1 between each support elements 15 are arranged.

As soon as the workpiece 1 has been deposited in an aligned manner on the table top 6 and compliance with the standard values or the predetermined values of the workpiece 1 with respect to dimensions and flatness has been determined with the aid of the measuring unit 14, the machining can be carried out with the aid of the laser head 2 including the laser head upstream objective unit 3 according to the stored in the control unit 12 and carried out via the identification code processing program. After completion of this work, the now machined workpiece 1 is gripped again by means of the gripper elements 1 6 and typically issued in that magazine compartment 5 of the magazine 4, from which the workpiece 1 has been previously removed. Following this, the magazine is moved 4 m by means of the feed 20, so that the movement unit or bridge 8 can remove, for example, the following workpiece 1 from the following magazine compartment 5 and process it as described.

The machining of the workpiece 1 can in principle be carried out so that a surface treatment in the sense of matting similar to a sandblast takes place. A stripping of painted or mirrored or otherwise coated workpieces 1 by means of the laser head 2 line or area is possible. Likewise, sandblasted or etched surfaces of workpieces 1 or glass plates can be equipped with an additional matting on the part of the laser head 2. As a result, for example, slip-inhibiting surfaces can be realized, which in conjunction

are particularly advantageous with floor slabs or floor tiles realized in this way.

Claims

claims:

1. Laser processing device, comprising a frame (6, 7), - at least one relative to the frame (6, 7) movable movement unit (8), at least one on the moving unit (8) arranged laser head (2), and with a removal magazine (4 ) for receiving by means of the laser head (2) to be machined workpieces (1), characterized in that the movement unit (8) for automatic and continuous removal of the respective workpiece to be machined (1) from the removal magazine (4) is arranged.

2. Device according to claim 1, characterized in that the movement unit (8) for the automatic and continuous output of the respective processed workpiece (1) to the removal magazine (4) and / or an output magazine is set up.

3. Device according to claim 1 or 2, characterized in that the removal magazine (4) as a combined removal / output magazine (4) is formed.

4. Device according to one of claims 1 to 3, characterized in that the respective workpiece (1) with a specific identification code

is equipped, which is read by a reading unit (13) and converted into, for example, a machining program.

5. Device according to claim 4, characterized in that the reading unit (13) on the frame (6, 7) and / or on the movement unit (8) is arranged.

6. Device according to one of claims 1 to 5, characterized in that at least one measuring unit (14) is provided to detect, for example, the dimensions of the workpiece (1) and / or its flatness and / or its transparency or the like workpiece properties.

7. Device according to claim 6, characterized in that the measuring unit (14) is arranged on the movement unit (8).

8. Device according to one of claims 4 to 7, characterized in that the reading unit (13) and / or the measuring unit (14) to an output device (12) are connected, which, for example, a message with deviating from predetermined target values actual Outputs values.

9. Device according to one of claims 1 to 8, characterized in that the frame (6, 7) is equipped with a plurality of support elements (15) for the workpiece (1).

10. Device according to one of claims 1 to 9, characterized in that the movement unit (8) the workpiece (1) on the frame (6, 7) in dependence on the dimensions of the workpiece (1) and / or the position of the support elements (15) aligned.

1 1. Device according to one of claims 1 to 10, characterized in that at least one gripper element (16) is provided.

12. Device according to one of claims 1 to 1 1, characterized marked, that the moving unit (8) has a suction / blowing device (18).

13. Device according to one of claims 1 to 12, characterized in that the movement unit (8) as a frame (6, 7) crossable mobile bridge (8) is formed.

14. Device according to claim 13, characterized in that the bridge (8) along lateral guides (10) is linearly movable relative to the frame (6, 7) is formed.

15. Device according to one of claims 1 to 14, characterized in that the frame (6, 7) incl. The movement unit (8) has an inclined position (angle a) relative to the vertical.