DE202011100305U1 - Laser machining device - Google Patents

Abstract

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

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 is in principle by the utility model DE 20 2008 003 143 U1 known. 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 apparatus for processing electromagnetic radiation optical elements according to the DE 101 35 606 B4 it is essentially about heating the optical element to a first temperature value before starting 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.

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 beginning and of the embodiment described in such a way 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 most cases, the movement unit is not only capable of automatically and continuously removing the respective workpieces to be machined. But according to an advantageous embodiment, the movement unit is also set up for the automatic and continuous dispensing of the respective processed workpiece to the removal magazine and / or an output magazine.

In principle, it is possible to work with a removal magazine and an issue magazine that is independent of it and has been cut out separately. 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 extraction / dispensing magazine is equipped with a plurality of magazine compartments, each of which receives a workpiece. At the beginning of the machining process, the workpiece located in the magazine compartments is unprocessed. After completion of the processing of all workpieces, the individual magazine compartments are filled with each processed workpieces. This process can take several hours and, for example, overnight. This depends on the respectively selected capacity of the combined withdrawal / issue magazine or that of the withdrawal magazine and the issue magazine. Typically, one will adjust the capacity to the desired uninterrupted processing time, i. 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. So there are both a surface engraving and an interior engraving and a Combination of both processes in question. Basically, one or more laser heads can be combined for this purpose, which are arranged on the one movement unit or on two independently movable and each movable relative to the frame movement units. 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.

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. In terms of surface design is the DE 39 17 774 A1 to call. With regard to the interior engraving will be on the EP 1 856 199 B1 directed.

In order to maintain the described fully automatic operation still further advantageous, 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 the identification code is a control unit as part of the laser processing device in a position to call the stored in the identification code processing program or to the identification code associated processing program and to take into account in the processing of 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 processing program queried and 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, the output of the respective machined workpiece to the magazine or usually the combined removal / output magazine succeeds without problems, and without additional lifting movements being carried out as a rule.

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 be easily pulled for editing on the table-like frame using the moving unit and push back into the similarly inclined magazine compartments after processing. This is achieved in a particularly simple and easy way by the fact that the frame is equipped with several support elements for the workpiece. With these support elements it likes are metal rollers, which are typically equipped with a tread 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 ensure trouble-free and damage-free processing in the course of the machining program selected with the aid of the identification code.

In this connection, the at least one measuring unit is arranged on the moving 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 to perform 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.

As a result, the invention ensures 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 mobility in the longitudinal extent of the frame is possible because the movement unit or bridge can be moved as a whole along the lateral guides.

The term laser head in the context of the invention generally means the actual laser source with optionally upstream objective unit. Alternatively or additionally, however, the laser head can also be 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 deflection mirror. This sets a particularly small moving mass.

Since the laser head is arranged on the movement unit, the alternatively or additionally provided beam guiding device together with the movement unit may altogether provide for the guidance of the laser beam over the surface of the workpiece. In principle, the movement unit and the beam guiding device can be moved independently of each other. In addition, the movement unit or realized at this point bridge 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 with respect to its dimensions and / or the flatness and / or the 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 taken 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 respect to the position of the support elements on the frame. 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 designed independently of the movement unit. 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 a suction / 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. As a result, additional fans are not required and the suction / blowing device operates 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 of course within the scope of the invention to equip the laser processing device described not only with a laser head, but with multiple 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. Just as well, the invention opens up the possibility to provide for each laser head own movement unit in each case matching frame. 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 movement unit for automatic and continuous removal and advantageously also for automatic and continuous output of the workpieces from the magazine and in the magazine or the combined removal / output 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 required magazine compartment is aligned with the surface of the frame. 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 the laser processing device according to the invention in an overview,

2 a side view of the object 1 and

3 a front view of the object after the 1 and 2 ,

In the figures, a laser processing device is shown, that is a device for processing workpieces 1 with the help of a laser head 2 , The laser head 2 is an objective unit 3 assigned or downstream, with the help of the laser head 2 leaving laser beam on a surface and / or inside the workpiece 1 is focused. In the first case there is a surface engraving of the workpiece 1 whereas the latter variant corresponds to an interior engraving.

For the workpieces to be processed 1 In the exemplary embodiment, these are plates 1 made of glass, plastic or comparable materials. The workpieces to be processed 1 be for this purpose in a withdrawal magazine 4 stocked, which with several magazine compartments 5 equipped. In the removal magazine or magazine 4 In the exemplary embodiment, this is a combined removal / dispensing magazine 4 , That is, the magazine 4 serves both to store the workpieces to be processed 1 as well as for storing the already processed workpieces 1 after processing. This will be explained in more detail below.

In addition to the basic structure of the laser processing device includes a frame 6 . 7 which in the embodiment of a table top 6 and one to the tabletop 6 attached edition 7 composed. The edition 7 is mostly perpendicular to the contrast flat designed table top 6 connected. Actually have the tabletop 6 and the edition 7 in cross-section over an L-shaped figure.

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

The movability of the movement unit 8th opposite the frame 6 . 7 is by lateral guides 10 allows. Actually, the movement unit 8th as the frame 6 . 7 comprehensive mobile bridge 8th educated. To guide the bridge 8th are the two lateral guides 10 provided along which the bridge 8th 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 8th be moved in an associated X-direction. Of course, the same applies to the movement unit 8th moving laser head 2 as well as the upstream lens unit 3 ,

In addition to this movement in the X direction, the laser head can be 2 including lens unit 3 also proceed in the Y direction. The laser head likes this 2 including lens unit 3 along an associated and inside the case 9 arranged leadership 11 be moved. The Y direction corresponds to the transverse direction of the rectangular table top 6 , Finally, the laser head 2 including lens unit 3 also in its height relative to the plate or the workpiece 1 set and move. This corresponds to a movement in the Z direction, as in the 2 is indicated.

Of particular importance for the invention is now the fact that the movement unit or the bridge 8th for automatic and continuous removal of each workpiece to be machined 1 from the magazine or from the combined withdrawal / issue magazine 4 is set up in the context of the example shown. Besides, the movement unit in question is 8th also for the automatic and continuous output of the respective machined workpiece 1 to the combined withdrawal / issue magazine 4 in a position. For this purpose is a control unit 12 provided, which the automatic and continuous removal of the workpiece to be machined 1 as well as its output after editing controls and ensures.

To achieve this in detail, has the respective workpiece 1 via a specific and in the example not expressly represented identification code. This one likes directly on the workpiece 1 be printed. Mostly the barcode is found on a label which, for example, is removable on the back of the workpiece 1 has been applied. The identification code or barcode in question can be read by means of a reading unit 13 be read out. The reading unit 13 is for this purpose on the table top 6 arranged, for example, likes in the table top 6 be admitted. This is the reading unit 13 able to the back to the workpiece 1 barcode can be read as soon as the workpiece 1 towards the table top 6 is moved.

Basically, the reading unit 13 but also together with the laser head 2 and the associated lens unit 3 in the Y and Z directions and optionally in the X direction. This is not shown. In any case, using the reading unit 13 - As explained - the workpiece 1 assigned identification code read out. This identification code may correspond to a particular processing program which is in the control unit 12 is stored. So as soon as the identification code using the reading unit 13 has been read out, the control unit "knows." 12 which surface engraving and / or internal engraving the workpiece 1 should receive. As a consequence, the control unit acts on it 12 the laser head 2 or the laser head 2 including lens unit 3 in a similar sense, to process the associated machining program as soon as the workpiece 1 on the rack 6 . 7 has reached his machining position.

In addition to the reading unit 13 can also have at least one measuring unit 14 are provided, which also on the moving unit 8th is arranged. Like the reading unit 13 and also the laser head 2 including lens unit 3 there is also the measuring unit 14 at the movement unit or the bridge 8th and will along with this along the side guides 10 move linearly in X-direction. Besides, the measuring unit is 14 again protected inside the case 9 arranged. An additional movability of the measuring unit 14 additionally provided in Y-direction and Z-direction in the example shown, but nevertheless not absolutely necessary.

With the help of the measuring unit 14 can be dimensions of the workpiece 1 and / or its flatness. For this purpose, the measuring unit likes 14 be designed as an optical distance sensor, ultrasonic sensor, etc. Anyway, with the help of the measuring unit 14 the workpiece 1 be checked to see whether its dimensions correspond to predetermined target values. The same applies to the flatness of the workpiece 1 , The of the measuring unit 14 recorded actual values are for this purpose to the control unit 12 in which associated setpoint values are stored and a setpoint / actual value comparison takes place. If the workpiece 1 corresponds to the stored specifications, the machining of the workpiece 1 made using the identification code selected and also in the control unit 12 stored processing program. Corresponds to the workpiece 1 however, not the specifications, so gives the control unit 12 an appropriate message to an operator, over all conceivable communication channels, for example by a wireless message to a mobile phone.

The reading unit 13 and also the measuring unit 14 So are the control unit 12 connected in this context as output device 12 acts. With the help of the control unit or output device 12 the addressed message is given to, for example, an operator that actual values for the workpiece deviating from one or more predetermined setpoint values 1 available.

The frame 6 . 7 or its tabletop 6 is with several support elements 15 equipped. The support elements 15 are flat over the entire table top 6 arranged distributed. At the support elements 15 it is advantageous to roles, especially metal rollers. The metal rollers like to protect the workpiece 1 be equipped 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 This can easily slide in the X direction to reach the processing position or after processing in the associated magazine compartment 5 to be pushed. Basically, the support elements 15 not driven and not braked designed.

To the removal of the respective workpiece 1 from the magazine 4 for machining and the output of the workpiece 1 after processing to the magazine 4 to accomplish, is the movement unit 8th with at least one gripper element 16 equipped. In the context of the embodiment, only one gripper element 16 provided, which to the leadership 11 connected. The gripper element 16 found in the embodiment adjacent to the edition 7 of the frame 6 . 7 , In addition, the gripper element 16 a pressure sensor 17 or a comparable sensor associated with its help a possible breakage of the workpiece 1 can be detected during the removal / issue. For this purpose, the sensor in question 17 as well as the gripper element 16 to the control unit 12 connected.

Finally, the movement unit 8th still with a suction / blowing device 18 equipped, that of the lens unit 3 is assigned and together with the laser head 2 and the lens unit 3 is designed to be movable in the X, Y and Z directions. With the help of the suction / glass device 18 Any machining residues are sucked off and can generate a targeted air flow in the region of a focal point of the laser.

The 2 makes it clear that the frame 6 . 7 or the tabletop 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 on the table top 6 Discarded plates or workpieces 1 can be kept thereon properly. In addition, the fact that the edition 7 with additional sliding elements 19 equipped. In these sliding elements 19 it is like the support elements 15 about roles. Like the roles 15 so are the roles 19 not driven, but provide after completion of the removal or the collection of the workpiece to be machined 1 that this is slowed down and held. That is, the sliding elements 19 are braked but not driven.

The operation is as follows. After loading the magazine or the combined withdrawal / issue magazine 4 with the workpieces to be processed 1 This is the side of the frame 6 . 7 moved up. This can be a feed 20 for the magazine 4 used below to the individual in the magazine compartments 5 stored workpieces 1 successively to edit and after editing again in the associated magazine compartment 5 to transport. The feed 20 is to the control unit 12 connected.

It can be seen that the individual magazine compartments 5 in about the same level as the table top 6 of the frame 6 . 7 are arranged. That is, the magazine compartments 5 have opposite the vertical S respectively a frame 21 of the magazine 4 about a similar inclination as the table top 6 opposite 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 table top 6 observed in relation to the vertical S. In this way, can be a workpiece to be machined 1 with the help of the gripper elements 16 practically the same level from the magazine compartment 5 remove and onto the table top 6 transport.

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

This is the workpiece 1 first roughly on the table top 6 filed and then the bridge 8th together with the measuring unit 14 method. This allows the workpiece 1 then on the rack 6 . 7 respectively the table top 6 depending on the workpiece dimensions and depending on the position of the support elements 15 complemented and stored. As a rule, the filing of the workpiece 1 on the rack 6 . 7 made in one go. Because in the control unit 12 the required dimensions and values are stored. Actually, you get the position of the workpiece 1 on the tabletop 6 so choose that any edges of the workpiece 1 between each support elements 15 are arranged.

As soon as the workpiece 1 aligned on the table top 6 is stored and with the help of the measuring unit 14 compliance with the standard values or the specified values of the workpiece 1 Regarding the dimensions and flatness, the machining can be done with the help of the laser head 2 including the upstream lens unit 3 according to the in the control unit 12 stored and selected via the identification code processing program done. After completion of this work, the now machined workpiece 1 with the help of the gripper elements 16 seized again and typically in that magazine compartment 5 of the magazine 4 issued, from which the workpiece 1 has been previously taken. After that, the magazine becomes 4 with the help of the feed 20 moved so that the movement unit or bridge 8th for example, the following workpiece 1 from the following magazine section 5 remove and edit as described.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202008003143 U1 [0002]
• DE 10135606 B4 [0003]
• DE 3917774 A1 [0011]
• EP 1856199 B1 [0011]

Claims (15)

Laser processing device, with - a frame ( 6 . 7 ), - at least one opposite the frame ( 6 . 7 ) movable movement unit ( 8th ), - at least one of the moving unit ( 8th ) arranged laser head ( 2 ), and with - a withdrawal magazine ( 4 ) for receiving by means of the laser head ( 2 ) workpieces to be processed ( 1 ), characterized in that the movement unit ( 8th ) for automatic and continuous removal of the respective workpiece to be machined ( 1 ) from the withdrawal magazine ( 4 ) is set up. Device according to claim 1, characterized in that the movement unit ( 8th ) for automatic and continuous dispensing of the respective processed workpiece ( 1 ) to the removal magazine ( 4 ) and / or an output magazine is set up. Device according to claim 1 or 2, characterized in that the removal magazine ( 4 ) as a combined withdrawal / issue magazine ( 4 ) is trained. Device according to one of claims 1 to 3, characterized in that the respective workpiece ( 1 ) is equipped with a specific identification code which is provided by a reading unit ( 13 ) and converted into, for example, a machining program. Device according to claim 4, characterized in that the reading unit ( 13 ) on the frame ( 6 . 7 ) and / or on the moving unit ( 8th ) is arranged. Device according to one of claims 1 to 5, characterized in that at least one measuring unit ( 14 ) is provided, for example, the dimensions of the workpiece ( 1 ) and / or its flatness and / or its transparency or similar workpiece properties. Device according to claim 6, characterized in that the measuring unit ( 14 ) on the moving unit ( 8th ) is arranged. 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 outputs, for example, a message at deviating from predetermined target values actual values. Device according to one of claims 1 to 8, characterized in that the frame ( 6 . 7 ) with several support elements ( 15 ) for the workpiece ( 1 ) is equipped. Device according to one of claims 1 to 9, characterized in that the movement unit ( 8th ) the workpiece ( 1 ) on the frame ( 6 . 7 ) depending on the dimensions of the workpiece ( 1 ) and / or the position of the support elements ( 15 ) aligned. Device according to one of claims 1 to 10, characterized in that at least one gripper element ( 16 ) is provided. Device according to one of claims 1 to 11, characterized in that the movement unit ( 8th ) a suction / glass device ( 18 ) having. Device according to one of claims 1 to 12, characterized in that the movement unit ( 8th ) as one the frame ( 6 . 7 ) comprehensive mobile bridge ( 8th ) is trained. Device according to claim 13, characterized in that the bridge ( 8th ) along lateral guides ( 10 ) linearly movable relative to the frame ( 6 . 7 ) is trained. Device according to one of claims 1 to 14, characterized in that the frame ( 6 . 7 ) including the movement unit ( 8th ) has an inclination (angle α) relative to the vertical.

Images