Beam protection component, component arrangement, bottom assembly and laser beam processing machine

Abstract

The utility model relates to a beam protection element (44) for protecting against damage caused by directed radiation, in particular laser radiation of a laser beam processing machine (10), comprising:-at least one protection section (62) having a beam protection surface (64) for absorbing and / or reflecting the directed radiation; wherein the beam protection surface (64) is designed to be impermeable to a beam in a beam protection direction (48) of the beam protection component (44); at least one expansion section (68) having an expansion groove (70), the expansion groove (70) being designed to compensate for a temperature rise of the beam shield (44) due to the absorption and / or reflection of the directed radiation.

Description

TECHNICAL FIELD

[0001] The invention relates to a beam protection component for protection against damage caused by directional radiation, in particular laser radiation of a laser beam machining machine. The invention also relates to a component arrangement having at least one beam protection component. The invention also relates to a base group for a laser beam machining machine. The invention also relates to a laser beam machining machine having a base group. BACKGROUND

[0002] For example, the beam protection components mentioned above are used on laser beam machining machines for metal machining. For example, the laser beam can be configured for welding and / or cutting metal.

[0003] However, in general, the corresponding laser beam machining machine itself is largely made of metal, so that in the event of a misdirection of the laser beam during laser beam machining, the laser beam machining machine can be considerably damaged. In particular, this can affect the residue disposal areas for removing machining waste. These areas are typically arranged below the material to be machined as part of the base group in the machining direction of the laser beam in order to be able to collect the corresponding machining waste produced.

[0004] For example, during material machining by means of a laser beam, it can occur that the laser beam "pierces" the material to be machined. In this and other cases, the laser beam can be directed at least briefly at the base group, so that this can cause considerable damage to the base group. In this case, the extent of the damage typically increases with increasing laser power.

[0005] In order to ensure protection of the base group, suitable beam protection components, typically protection plates or armouring, are arranged at the machine components to be protected, which can at least withstand short-term laser radiation.

[0006] For example, a flame cutting table having a protection device consisting of inclined protection elements is known from DE 10 2009 037 092 A1, wherein the protection elements shield exposed surfaces from direct action by the flame cutter.

[0007] However, even if the laser beam only acts on the beam protection component for a short time, a considerable energy input occurs which usually leads to a considerable temperature increase of the beam protection component. Due to this temperature increase, considerable mechanical stresses can occur in the beam protection component. As a result, for example, fasteners of the beam protection component can be destroyed. Furthermore, the beam protection component can be deformed, in particular domed For example, if the beam protection component domes into the movement space of an adjacent machine component, a collision can occur and further damage to the laser beam machining machine can be caused. SUMMARY

[0008] It is an object of the present application to specify a beam protection component which ensures reliable beam protection and low-stress temperature increase. Furthermore, it is an object of the present application to specify a component mechanism, a base assembly and a laser beam machining machine.

[0009] According to the present application, this object is achieved by a beam protection component according to the present application. This object is also achieved by a component mechanism according to the present application. This object is also achieved by a base assembly according to the present application. This object is also achieved by a laser beam machining machine according to the present application. Preferred embodiments of the present application are listed below.

[0010] According to the present application, a beam protection component is specified. The beam protection component is suitable, in particular, configured for protection against damage caused by directional radiation, in particular laser radiation of a laser beam machining machine.

[0011] The beam protection component has at least one protection section. The protection section has a beam protection face. The beam protection face is suitable, in particular, configured for absorption and / or reflection of directional radiation, in particular laser radiation. The beam protection face is configured to be impermeable to the beam in at least one beam protection direction of the beam protection component In other words, the beam protection component is configured with a full or gapless beam protection at least in the beam protection direction.

[0012] The beam protection component has at least one expansion section. The expansion section has at least one expansion slit. Preferably, the expansion slit is configured as a through groove on the expansion section. The expansion slit is suitable, in particular, configured for compensation of a temperature increase of the beam protection component due to absorption and / or reflection of directional radiation. Preferably, the expansion slit is configured in such a way that the beam protection component expands in a direction which is not critical to safety in the event of a thermally induced deformation. In other words, an expansion in a direction which is critical to safety can be prevented.

[0013] In summary, the basic object is achieved in a particularly simple manner by providing the beam protection component with at least one expansion groove or heat dissipation groove. The expansion groove can achieve a low-stress elongation of the beam protection component, which can prevent undesired deformations or arching. In this way, potential collisions of the beam protection component with other machine components can be prevented.

[0014] In a preferred embodiment of the beam protection component, the expansion section is integrally configured on the protection section. In other words, the beam protection component has the at least one expansion groove on the beam protection face. Preferably, the expansion groove is configured in the form of a through recess on the beam protection face. Thereby, the beam protection component can be designed particularly compact.

[0015] Furthermore, an embodiment of the beam protection component is preferred, wherein the beam protection face is configured obliquely with respect to the beam protection direction. In other words, the beam protection direction can be configured oblique to the beam protection face, or in other words, the beam protection direction is not configured perpendicular to the beam protection face. Thereby, the material thickness in the beam protection direction can be increased, thereby increasing the durability of the beam protection component. Furthermore, in particular in combination with the expansion groove configured on the protection face, the beam impermeability in the beam protection direction can be ensured. Further advantageously, in particular in combination with a vertical beam protection direction, the oblique design of the beam protection face can prevent the beam protection face from being affected by machining waste. For example, it can be prevented that slag adheres to the beam protection face and / or that cutting waste rests on the beam protection face.

[0016] An improvement of the beam protection component is preferred, wherein the beam protection face is configured obliquely with respect to the beam protection direction at a protection face angle of between 25° and 75°, preferably between 35° and 60°, particularly preferably 45°. The inventors have recognized that the above-mentioned protection face angle, in combination with the above-mentioned advantages, contributes to a particularly effective design of the beam protection area achieved by the beam protection face.

[0017] Further preferred is an improvement of the beam protection component, wherein the expansion groove has a groove wall configured obliquely or horizontally with respect to the beam protection direction. In other words, the expansion groove is not configured in the beam protection direction. Particularly preferably, the expansion groove is configured as obliquely as possible with respect to the beam protection direction. Thereby, the beam impermeability of the protection face can be ensured even with a small material thickness of the protection section. According to this improvement, the groove wall is configured as part of the beam protection face. In other words, in addition to the surface of the protection section, the beam protection face also comprises a part of the groove wall.

[0018] In a preferred embodiment of the beam protection component, the expansion groove has at least one change in direction on the expansion section or protection section, in particular in the direction of the safety-relevant extension. In other words, the expansion groove, which is primarily configured in the main extension direction, has one or more groove sections which extend obliquely to the main extension direction. Here, a change in direction can be understood as a change from a straight-line extension to an at least partially opposite direction and / or a change in the curved direction from "curved to the left" to "curved to the right".

[0019] Preferably, the expansion groove is configured on the protection section or expansion section in such a way that the expansion groove has a main extension direction which has a protection angle with respect to the beam protection direction. By virtue of the change in the direction of the course of the expansion groove, in particular in combination with a suitable protection angle, it is possible to achieve that, despite the oblique configuration of the expansion groove with respect to the beam protection direction, the beam protection surface is configured to be impermeable to the beam, or that the directional radiation cannot pass through the expansion groove of the beam protection component.

[0020] In a preferred refinement of the beam protection component, the expansion groove has at least two, in particular a plurality of, adjacent, straight groove sections. The straight groove sections can have a groove section angle of less than 180°, preferably less than 160°, particularly preferably less than 150°, between one another. In other words, the expansion groove can be configured in a zigzag shape in the main extension direction thereof. As a result, the expansion groove is configured to be impermeable to the beam in the expansion direction without having to excessively lengthen the section length or the overall length of the expansion groove.

[0021] In an alternative or additional embodiment of the beam protection component, the expansion groove can have at least two, in particular a plurality of, adjacent, curved groove sections. In other words, the expansion groove has a "wavy" course in the main extension direction. As a result, mechanical stresses due to the notch effect can be prevented.

[0022] In a preferred refinement of the beam protection component, the curved groove sections have a radius of curvature of at least 5 mm, preferably at least 10 mm, particularly preferably at least 20 mm. As a result, the expansion groove is configured to be impermeable to the beam in the expansion direction without having to excessively increase the overall length of the expansion groove.

[0023] In a preferred embodiment, the beam protection component has at least two, in particular a plurality of, expansion grooves. As a result, the extension of the beam protection component as it warms up can be carried out with less stress.

[0024] The following refinement of the beam protection component is preferred, wherein the expansion grooves are configured parallel to one another on the protection section. As a result, a particularly uniform extension can be achieved, or the stresses on the beam protection component are particularly uniformly compensated.

[0025] Further preferred is an improved version of the beam protection component, wherein adjacent expansion grooves have the same spacing from one another. Thereby, a more uniform realization of the elongation or compensation of the stresses on the beam protection component can be achieved.

[0026] In a preferred embodiment of the beam protection component, at least one expansion groove is configured for arranging a fastening element. In other words, the fastening element can be arranged in the expansion groove. Thereby, it can be prevented that stresses act on the fastening element.

[0027] Further, an improved version of the beam protection component is preferred, wherein the expansion groove is configured for arranging a screw and / or a rivet. For example, in the case of a screw connection, the type of screw connection can be configured such that thermal warping can be compensated. Further, for example in the case of a rivet as fastening element, the expansion groove can be configured around the rivet in order to prevent the rivet from being torn off due to thermal warping.

[0028] A preferred embodiment of the beam protection component is that the at least one expansion groove has a groove depth perpendicular to the beam protection surface. Thereby, the expansion groove can be produced particularly simply, since a bevel cutting head can be dispensed with.

[0029] Preferably, the expansion groove has a groove width which is as small as possible. The expansion groove can have a groove width of at most 5 mm, preferably at most 2 mm, particularly preferably at most 1 mm. Thereby, even with a small material thickness of the protection segment, a beam protection can be ensured.

[0030] The expansion groove can also preferably have an interruption at the height of the fastening element. In other words, the expansion groove can be divided into two expansion groove segments which are separated from one another by an interruption. In this way, the stability of the protection segment of the beam protection component can be improved.

[0031] In a preferred embodiment of the beam protection component, the material of the beam protection component, in particular of the protection segment, has a high thermal conductivity and / or an unfavorable coupling-in characteristic for directional radiation, in particular laser radiation. Here, composite materials, ceramic materials and / or metallic materials can be used. Preferably, at least the protection segment has or is configured from structural steel as a material. Structural steel is particularly cost-effective and suitable as a beam protection material for low laser radiation, in particular low laser power. Particularly preferably, at least the protection segment has or is particularly configured from copper as a material. Copper is particularly suitable for high-intensity laser radiation, in particular high laser power.

[0032] The protection section can have a stiffening bend along the longitudinal edge. In other words, an edge of the protection section which extends in the longitudinal direction of the protection section, preferably an upper edge or a lower edge of the protection section, can be bent. The curvature relative to the beam protection surface can be 15°, for example. By means of the bend on the edge of the protection section, the stability of the protection section, in particular the bending stiffness of the protection section in its longitudinal direction, is improved.

[0033] Furthermore, embodiments of the beam protection component are preferred, wherein the protection section has a material thickness of at least 5 millimetres, preferably at least 10 millimetres, particularly preferably at least 20 millimetres perpendicular to the protection surface. Thereby, the protection function of the beam protection component can be further improved.

[0034] In a preferred embodiment of the beam protection component, the protection section is configured as a plate. Preferably, the entire beam protection component is configured as a plate. Thereby, the beam protection component is particularly easy to manufacture and can be arranged in various positions. In the case of a protection section configured as a plate, the beam protection component can also be referred to as a heat protection plate.

[0035] Further preferred are embodiments of the beam protection component, wherein the protection surface has a surface structure which prevents the adhesion of machining waste, in particular of melt or slag. Hot slag, which is produced, for example, during laser cutting, can deposit on the beam protection component, in particular on the beam protection surface. In order to be able to remove the slag as easily as possible and / or to discharge the slag by means of an inclined design of the beam protection surface, the melt is prevented from fusing or "clotting" by means of a corresponding surface structure. Preferably, the surface structure is configured "shot blasted", in particular "sand blasted". A shot blasted or sand blasted surface has proven particularly suitable for preventing the adhesion of machining waste on the beam protection component.

[0036] The underlying object is also achieved by means of a component mechanism.

[0037] The component mechanism has at least one carrier and at least one beam protection component as described above and below. The at least one beam protection component is arranged to be releasably held on the carrier. In other words, the beam protection component can be removed from the component mechanism without damaging the carrier and / or other beam protection components. Thereby, the beam protection component can be replaced particularly quickly in the case of repeated use of the remaining components.

[0038] In a preferred embodiment, the component arrangement has at least two (in particular the above and below described) beam protection components. Typically, each of the beam protection components is arranged to be held on a carrier. Thereby, a plurality of beam protection components can be arranged in one structural unit, which can in particular be arranged on the base assembly and / or the laser beam machining machine.

[0039] It is further preferred that the component arrangement is improved in such a way that the at least two beam protection components have different included angles, which are inclined with respect to the beam protection direction of the component arrangement. In other words, the beam protection components are arranged or oriented at an angle to each other. Thereby, the component arrangement can be matched to the area to be protected.

[0040] In a particularly preferred improvement of the component arrangement, at least one of the beam protection components is fixed on the carrier by the respective other beam protection component. In other words, at least one beam protection component can dispense with a fastener.

[0041] The basic object is also achieved by a base assembly. The base assembly is suitable, in particular, is configured for being arranged on a laser beam machining machine.

[0042] The base assembly has at least one above and below described beam protection component and / or at least one above and below described component arrangement with such a beam protection component. The beam protection component is configured for protecting the base assembly from damage by the laser beam of the laser beam machining machine.

[0043] In a preferred embodiment of the base assembly, the beam protection direction of the beam protection component is oriented parallel to the machining direction of the laser beam. Thereby, the beam protection achieved by the beam protection component can be used efficiently.

[0044] It is further preferred that the embodiment is such that the base assembly has at least one base module and a suction device fluidically connected to the base module. Preferably, in this case, at least one protection section of the at least one beam protection component is arranged on the side of the suction device facing the beam protection direction. In other words, the beam protection component protects the suction device from damage by directional radiation, in particular laser radiation.

[0045] Preferably, the base module is configured drawer-like and can be arranged on the base assembly by means of a corresponding guide rail. Thereby, the machining waste collected by the base assembly or the base module can be removed from the base assembly particularly easily.

[0046] In one preferred refinement, the bottom assembly has at least two bottom modules. These bottom modules can be separated from one another by a Schottblech. Preferably, it is proposed in this refinement that the shielding section of the at least one beam protection component is arranged on the side of the Schottblech facing the beam protection direction. In other words, the bottom assembly has a beam protection component arranged on the Schottblech, which protects the Schottblech from damage by directional radiation, in particular laser radiation.

[0047] The underlying object is also achieved by a laser beam machine. The laser machine has a bottom assembly as described above and below. The laser machine can have a laser beam unit for structuring a laser beam in a machining direction. Preferably, the laser beam unit can be displaced parallel to a laser beam machining region of the laser beam machine.

[0048] Typically, the bottom assembly is arranged below a laser machining region of the laser machine. In other words, the bottom assembly is arranged on the laser machine in such a way that machining waste falling in the direction of gravity can be collected by the bottom assembly.

[0049] In one preferred embodiment of the laser machine, the bottom assembly is completely obscured by the beam protection face of the beam protection component in a projection view in the machining direction of the laser beam. In other words, the beam protection component structures a continuous or opening-free surface in the machining direction.

[0050] Further features and advantages of the present application result from the description, the preferred embodiments and the drawings. The features described above and to be further explained below can be used individually or in any arbitrary combination with one another. The embodiments shown and described are not to be understood as an exhaustive enumeration, but rather more precisely as having exemplary character for illustrating the present application. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 Laser beam machine with a laser beam unit and a bottom assembly is shown in a perspective view.

[0052] Figure 2 Bottom assembly of Figure 1 is shown in a perspective view.

[0053] Figure 3 Schottblech mechanism with a Schottblech and a beam protection component is shown.

[0054] Figure 4 Bottom assembly of Figure 1 is shown in a perspective detail view with a beam protection component having a protection face oriented obliquely to the beam protection direction.

[0055] Figure 5in a view along the beam protection direction towards the protection surface Figure 4 of the beam protection component.

[0056] Figure 6 in a perspective view showing a component mechanism with two beam protection components.

[0057] Figure 7 in another perspective view showing Figure 6 a component mechanism.

[0058] Figure 8a showing a variant of the beam protection component.

[0059] Figure 8b showing another variant of the beam protection component.

[0060] Figure 8c showing another variant of the beam protection component. DETAILED DESCRIPTION

[0061] Figure 1 showing a laser beam machining machine 10 with a laser beam unit 12 and a bottom assembly 14.

[0062] The laser beam machining machine 10 is typically configured for arranging a work pallet, not shown in detail. The work pallet can be arranged in a laser beam machining area 16 of the laser beam machining machine 10 between the laser beam unit 12 and the bottom assembly 14. For this purpose, the laser beam unit 12 can be moved above the laser beam machining area 16, wherein the laser beam 18 is displaced, in particular, parallel to the laser beam machining area 16. Typically, a material, in particular a metal sheet, to be machined by the laser beam 18 is arranged on the work pallet.

[0063] The laser beam 18 can have a machining direction 20, which is illustrated by the arrow direction. As shown, the machining direction 20 can be configured perpendicular to the laser beam machining area 16.

[0064] During machining of the material arranged on the work pallet, machining waste (not shown) is typically generated. For example, a melt can be generated during laser cutting and / or laser welding. Furthermore, for example, cutting waste can be generated during laser cutting.

[0065] The bottom assembly 14 is typically arranged below the laser beam unit 12 and the work pallet and is configured for collecting machining waste. As shown, the bottom assembly 14 can be configured rectangular. Preferably, the bottom assembly 14 matches the dimensions of the laser beam machining area 16. In particular, it is preferred that the bottom assembly 14 coincides with the laser beam machining area 16 in horizontal direction. Thereby, machining waste falling from the work pallet can be particularly reliably collected.

[0066] As shown, the bottom assembly 14 can have a plurality of, here five, bottom modules 22. The bottom modules 22 are arranged in a row along a longitudinal axis 24 of the bottom assembly 14, in particular a horizontal extension. As shown, the bottom modules 22 can be detachably fastened together by means of a fixing 26. Preferably, the bottom assembly 14 is configured such that it can be enlarged or reduced by arranging or removing bottom modules 22. Thereby, the bottom assembly 14 can be flexibly matched to the laser processing area 16 and / or the material size of the material to be processed. For the sake of clarity, reference signs are provided only for two bottom modules 22 and one fixing 26.

[0067] The bottom modules 22 can each have a module bottom 28. Preferably, the module bottoms 28 are configured to form a continuous bottom assembly bottom 30. The bottom assembly bottom 30 serves to reliably collect cutting waste. As shown, the bottom assembly bottom 30 can be configured to be static. However, it can also be proposed in other embodiments that the bottom assembly bottom 30 is configured as a conveyor belt, wherein the processing waste can be transported out of the bottom assembly 14 by means of the conveyor belt. For the sake of clarity, reference signs are provided only for two module bottoms 28 and one bottom assembly bottom 30.

[0068] The bottom assembly 14 can have a surrounding bottom assembly wall 32. In other words, the bottom assembly 14 can be configured to have a total volume 33, which is delimited by the bottom assembly bottom 30 and the bottom assembly wall 32.

[0069] As shown, the bottom assembly wall 32 can at least partially be configured by module walls 34 of the bottom modules 22. The bottom modules 22 can be separated from each other by partitions 36 along the longitudinal axis 24, respectively. Thereby, a module volume 38 can be configured in conjunction with the respective module wall 34 of the bottom module 22. In other words, the total volume 33 of the bottom assembly 14 can be divided into partial volumes by the partitions 36. For the sake of clarity, reference signs are provided only for two module walls 34, two partitions 36 and two module volumes 38.

[0070] The bottom assembly 14 preferably has a suction device 40. The suction device 40 is configured for suctioning process gas generated and / or used during laser beam processing. The suction device 40 can be fluidically connected to the total volume 33 of the bottom assembly 14 via a plurality of suction openings 42. Preferably, the suction device 40 is fluidically connected to the respective module volume 38 by means of the respective suction opening 42. In other words, the module volume 38, which is significantly smaller compared to the total volume 33 of the bottom assembly 14, can be suctioned. Thereby, the process gas can be suctioned in a reliable and energy-efficient manner. For the sake of clarity, reference signs are provided only for two suction openings 42 of the suction device 40.

[0071] The bottom assembly 14 has a plurality of beam protection components 44. The beam protection components 44 are configured for protecting the bottom assembly 14 from damage by the laser beam 18 of the laser beam machining device 10. Damage of the bottom assembly 14 by the laser beam 18 can occur, for example, when the laser beam 18 penetrates the material when machining the material and the laser radiation can act unhindered on the bottom assembly 14. By means of the beam protection components 44, the laser radiation of the laser beam 18 can be absorbed and / or reflected and damage to the bottom assembly 14 can be effectively prevented. Preferably, the beam protection components 44 are configured in terms of number and size such that the bottom assembly 14 has a gap-free total protection surface 46 below the laser machining area 16 in a view projected in the machining direction 20. In other words, by means of the beam protection components 44, absorption and / or reflection of the laser beam 18 can be achieved throughout the laser beam machining area 16.

[0072] According to the illustrated embodiment, the bottom assembly 14 can have a plurality of beam protection components 44 on the module bottom 28 of each bottom module 22. Alternatively or additionally, the bottom assembly can have at least one beam protection component 44 on each module wall 34 of the bottom module 22. Preferably, the bottom assembly 14 has at least one beam protection component 44 between the suction opening 42, in particular the suction device 40, and the laser beam unit 12. Alternatively or additionally, the bottom assembly 14 can have a plurality of beam protection components 44 on each partition 16. For the sake of clarity, reference signs are provided only for four beam protection components 44.

[0073] Each beam protection component 44 can have a beam protection direction 48, which is oriented parallel to the machining direction 20 of the laser beam 18.

[0074] Figure 2 In a perspective separate illustration Figure 1 of the bottom assembly 14.

[0075] As shown, the bottom modules 22 can be configured as drawers 50. Thereby, the bottom modules 22 can be particularly easily and quickly removed. This is particularly advantageous if the bottom modules 22 are in a state filled with machining waste and have to be emptied. In this case, the bottom modules 22 can be configured to be able to be pushed into the bottom assembly 14 by means of guide rails 52. For removing the bottom modules 22, these can each have a handle 54. As shown, by means of the beam protection components 44, vulnerable components of the bottom assembly 14, such as the guide rails 52, the handles 54, the suction openings 42 of the suction devices 40 and / or the partitions 16, can be reliably protected from damage by the laser beam 18 (see Figure 1 ). For the sake of clarity, reference signs are provided only for one guide rail 52 and one handle 54.

[0076] Figure 3 The partitioning mechanism 56 is shown in sections, which have Figure 2 the partition 36 of the base assembly 14 and the two beam protection components 44.

[0077] In order to protect the partition 16 from damage by the laser radiation of the laser beam 18 (see Figure 1 ), the beam protection components 44 are arranged on the side of the partition 16 facing the laser beam 18. Preferably, the beam protection components 44 are fastened on the partition 16. The beam protection components 44 are preferably fastened on the partition 16 by means of releasable fasteners 58, here screws 60. Thereby, the beam protection components 44 can be easily replaced when required, without having to replace the entire partition 16.

[0078] The beam protection components 44 each have a protection section 62, which has a beam protection face 64 configured for absorbing and / or reflecting laser radiation. The beam protection face 64 typically extends over the entire protection area 66 of the beam protection component 44 projected in the beam protection direction 48. The beam protection face 64 can be configured mainly oblique to the beam protection direction 48.

[0079] The beam protection components 44 each have an expansion section 68. The expansion section 68 is configured for compensating a temperature increase of the respective beam protection component 44. For example, when the beam protection component 44 absorbs and / or reflects laser radiation of the laser beam 18 for protection reasons, the beam protection component 44 can increase in temperature. The expansion section 68 can have a plurality of expansion grooves 70. The expansion grooves 70 can compensate an expansion of the beam protection component 44 due to temperature. Thereby, mechanical stresses and / or deformations, in particular buckling, of the beam protection component 44 can be prevented.

[0080] According to the illustrated embodiment, the expansion section 68 has the fasteners 58. Furthermore, the expansion grooves 70 are each configured next to one of the fasteners 58 on the expansion section 68. By the illustrated design of the expansion grooves 70, the fasteners 58 or fastening points can remain largely free of mechanical stresses. Thereby, a breakage of the fasteners 58 in the event of a temperature increase of the beam protection component 44 can be prevented.

[0081] Preferably, the expansion groove 70 is configured to be flush with the safety-related expansion direction 72 of the beam shielding member 44. In other words, the expansion groove 70 is configured in a direction that will only produce slight expansion or bulging (especially no extension or bulging). Extension of the beam shielding member 44 in the safety-related expansion direction 72 would result in extension toward the work tray, thereby creating a risk of collision between the work tray and the beam shielding member 44. According to the illustrated embodiment, the expansion groove 70 is configured along or against the beam shielding direction 48. This prevents collisions with the work tray.

[0082] According to the illustrated embodiment, the beam protection component 44 has a protection section 62 that adjoins or transitions into the expansion section 68. The expansion section 68 is constructed at an angle relative to the protection section 62. The expansion section 68 is protected from laser radiation by the protection section 62. This protects the fastener 58 from laser radiation.

[0083] As shown in the figure, the beam protection component 44 may have spacers 74. The spacers 74 are used to arrange the beam protection component 44 at certain intervals on the partition 16. This effectively prevents heat transfer from the beam protection component 44 to the partition 16.

[0084] Figure 4 To the laser beam 18 arranged in the suction opening 42 (see Figure 1 A detailed view of the beam protection component 44 on one side is shown. Figure 1 The bottom component 14.

[0085] The beam protection component 44 has a protection section 62 and an expansion section 68. The expansion section 68 is integrally formed on the protection section 62. In other words, the protection section 62 is configured to compensate for the temperature rise of the beam protection component 44.

[0086] The protective section 62 has a protective surface 64. The protective surface 64 is oriented at an angle relative to the beam protection direction 48. The protective surface 64 may have a protective surface angle 76 relative to the beam protection direction 48. For example, the protective surface angle 76 may be between 25 degrees and 75 degrees. This angled orientation prevents processing waste from adhering to and / or remaining on the beam protection component 44. Therefore, processing waste can be further conveyed in the direction of the module bottom 28 via the beam protection component 44 or the protective surface 64.

[0087] The expansion section 68 or the shield section 62 has a plurality of expansion grooves 70. The expansion grooves 70 can be configured in parallel. Preferably, the expansion grooves 70 are configured on the expansion section 68 mainly in a manner extending in a safety-relevant expansion direction 72. The safety-relevant expansion direction 72 is typically located on the shield face 64. In other words, the expansion grooves 70 are configured obliquely with a shield face angle 76 relative to the beam shield direction 48. Thereby, a buckling of the beam shield component 44 in the safety-relevant expansion direction 72 can be avoided.

[0088] The expansion grooves 70 can have a uniform spacing 78 from one another. Thereby, a particularly uniform elongation on the shield component 44 can be achieved.

[0089] In the shield area 66 projected in the beam shield direction 48, the expansion grooves 70 are configured to be impermeable to the laser radiation of the laser beam 18. In other words, the shield face 64 is configured to be impermeable to the laser beam 18 in the beam shield direction 48 despite the expansion grooves 70.

[0090] From Figure 4 The fastener 58 can also be seen.

[0091] Figure 5 A partial view of the beam shield component 44 of Figure 4 is shown in a view in the beam shield direction 48 (see Figure 4 .

[0092] The illustrated partial view shows one of the expansion grooves 70 configured on the expansion section 68. The expansion grooves 70 are configured mainly in the safety-relevant expansion direction 72.

[0093] As shown, the expansion section 70 has a plurality of groove sections 80. The groove sections 80 can be configured linearly. The groove sections 80 can jointly configure the expansion groove 70. The groove sections 80 can each have a section extension 82 in a section extension direction 84, which deviates from the safety-relevant expansion direction 72. In other words, the groove sections 80 can be configured with a section angle 86 relative to the safety-relevant expansion direction 72. For example, the section angle can be between 1 degree and 45 degrees. Adjacent groove sections 80 typically have a direction change from one another. In other words, the expansion groove 70 can be configured in a zigzag shape. Adjacent groove sections 80 can have a groove section angle 87. The groove section angle 87 is typically less than 180°, preferably less than 180°. The section extensions 82 together result in a length which is less than a total length 88 of the expansion groove 70 in the safety-relevant expansion direction 72.

[0094] According to the illustrated embodiment, the expansion groove 70 is configured perpendicular to the shield face 64. In other words, the expansion groove 70 has a groove depth 89 which corresponds to a material thickness of the beam shield component 44 or the shield section 62.

[0095] Alternatively, it can be proposed that the expansion slots 70 are configured obliquely with respect to the shield face 64. Thereby, the slot depth 89 can be configured to be greater than the material thickness of the shield section 62.

[0096] According to the illustration of the beam shield component 44 on the beam shield direction 48, which is according to the Figure 5 illustration directed into the plane of the drawing, the shield face 64 is partially configured by the slot wall 90. In other words, the oblique orientation of the shield face 64 with respect to the beam shield direction 48 can cause the expansion slots 70 to be oriented obliquely to the beam shield direction 48 as well. Thereby, the laser beam 18 (cf. Fig. 1) is not transmitted through the expansion slots 70 parallel to the slot depth 89, but is designed to be deflected onto the slot wall 90. In this way, the shield face 64 can be configured to be continuously beam- impermeable in the beam shield direction 48 despite the presence of the expansion slots 70. Figure 1

[0097] In the projection view, the slot width 92 typically has a magnitude that is smaller than the slot depth 89. In particular, it is preferred that the slot width 92 is designed to be as small as possible and in particular smaller than two millimeters. Furthermore, the maximum slot extension 94 of the expansion slots 70 in the safety-relevant expansion direction 72 typically has a magnitude that is smaller than the slot depth 89. Thereby, it can be ensured that the shield face 64 is configured to be continuously beam-impermeable.

[0098] Figure 6 A component mechanism 96 is shown, which has a carrier 98 and two beam shield components 44. The component mechanism 96 is configured as a structural unit for arrangement on the base assembly 14 (cf. Fig. 1, Figure 1 , Figure 2 ).

[0099] The beam shield components 44 each have a shield section 62, which is configured in one piece with an expansion section 68. The expansion section 68 has a plurality of expansion slots 70 arranged in parallel.

[0100] The expansion slots 70 are each configured mainly along the safety-relevant expansion direction 72 of the respective beam shield component 44. The expansion slots 72 can be configured in a zigzag shape.

[0101] The beam shield components 44 each have a shield face 64, which is oriented obliquely to the common beam shield direction 48 of the component mechanism 96. According to the illustrated illustration, the beam shield components 44 have different shield face angles 76. In other words, the beam shield components 44 are arranged on the carrier 98 with different obliquities with respect to the beam shield direction 48.

[0102] Figure 7 The component mechanism 96 is shown in perspective view from the side facing away from the beam shield direction 48. Figure 6 ​​

[0103] As shown, the beam protection component 44 is arranged hanging on the carrier 98 by means of the hook connection 100. Furthermore, as shown, the beam protection component 44 arranged in a releasable manner on the carrier 98 by means of the hook connection 100 can be fixed by another beam protection component 44 (see also Figure 6 ). The other beam protection component 44 can be fastened on the carrier 98, for example, by means of the fastening element 58 and hold the hooked beam protection component 44 in a clamped manner on the carrier 98. In other words, one beam protection component 44 is fixed on the carrier 98 by another beam protection component 44. Thereby, the number of fastening elements 58 can be reduced, which can be damaged by the laser radiation of the laser beam 18 (see Figure 1 ). Furthermore, the fastening elements 58 can be positioned in a region below the laser beam machining region 16 (see Figure 1 ) which is at lower risk of being exposed to the laser radiation of the laser beam 18.

[0104] In Figures 8a to 8c different variants of the beam protection component 44 according to the application are shown. In the shown embodiments, the beam protection component 44 can also be referred to as heat shield accordingly. The beam protection component 44 shown in Figure 8a corresponds to the beam protection component 44 according to Figure 4 . The beam protection component 44 according to Figure 8b has a lower number of expansion slots 70 (9, compared to 11) over the length of the beam protection component 44 than the beam protection component 44 in Figure 8a . Furthermore, each of these expansion slots 70 is divided into two sections of the respective expansion slot 70 along the expansion direction 72 by an interruption 71 of the respective expansion slot 70 at the height of the fastening element 58. Both the reduction of the number of expansion slots 70 and the division of one or more of the expansion slots 70 contribute to an improved stability of the heat shield 44. In Figure 8c another approach for stabilizing the heat shield 44 is shown. In addition to the stabilization measures according to Figure 8b , the heat shield 44 according to Figure 8c has a reinforcing bend 65 along its upper edge. For example, the reinforcing bend 65 can have an inclination of 15° with respect to the beam protection face 64 (see Figure 4 ). The configuration of the reinforcing bend 65 can be seen in the side view of the heat shield 44 in the right half of Figure 8c .

[0105] List of reference signs

[0106] laser beam machining machine 10; screw 60;

[0107] Laser beam unit 12; Guard section 62;

[0108] Bottom assembly 14; Beam guard face 64;

[0109] Laser beam machining area 16; Reinforced bend 65;

[0110] Laser beam 18; Guard area 66;

[0111] Machining direction 20; Expansion section 68;

[0112] Bottom module 22; Expansion slot 70;

[0113] Longitudinal axis 24; Expansion slot interruption 71;

[0114] Fastener 26; Expansion direction 72;

[0115] Module bottom 28; Spacer 74;

[0116] Bottom assembly bottom 30; Guard face angle 76;

[0117] Bottom assembly wall 32; Spacing 78;

[0118] Total volume 33; Slot section 80;

[0119] Module wall 34; Section extension 82;

[0120] Partition 36; Section extension direction 84;

[0121] Module volume 38; Section angle 86;

[0122] Suction device 40; Slot section angle 87;

[0123] Suction opening 42; Overall length 88;

[0124] Beam guard component 44; Slot depth 89;

[0125] Overall guard face 46; Slot wall 90;

[0126] Beam guard direction 48; Slot width 92;

[0127] Drawer 50; Slot extension 94;

[0128] Guide rail 52; Component mechanism 96;

[0129] Handle 54; Carrier 98;

[0130] Partition mechanism 56; Hook connection 100.

[0131] Fastener 58;

Claims

1. A beam protection component for protecting against damage caused by laser radiation from a laser beam processing machine (10), said beam protection component having: - at least one shield segment (62) with a beam shield face (64) for absorbing and / or reflecting the laser radiation; wherein The beam protection surface (64) is configured to not transmit beams in the beam protection direction (48) of the beam protection component (44); - At least one expansion section (68) having an expansion groove (70), wherein the expansion groove (70) is configured to compensate for the temperature rise of the beam protection component (44) due to the absorption and / or reflection of the laser radiation.

2. The beam protection component according to claim 1, wherein, The expansion section (68) is integrally constructed on the protective section (62).

3. The beam protection component according to claim 1 or 2, wherein, The beam protection surface (64) is constructed at an angle relative to the beam protection direction (48).

4. The beam protection component according to claim 3, wherein, The beam protection surface (64) is constructed at an angle (76) between 25° and 75° relative to the beam protection direction (48).

5. The beam protection component according to claim 4, wherein, The beam protection surface (64) is constructed at an angle (76) between 35° and 60° relative to the beam protection direction (48).

6. The beam protection component according to claim 5, wherein, The beam protection surface (64) is constructed at a 45° protection surface angle (76) relative to the beam protection direction (48).

7. The beam protection component according to claim 3, wherein, The expansion groove (70) has a groove wall (90) that is inclined or horizontal relative to the beam protection direction (48), wherein the groove wall (90) is configured as a portion of the beam protection surface (64).

8. The beam protection component according to claim 1 or 2, wherein, The expansion groove (70) has at least one directional change along the expansion direction (72) in the expansion section (68).

9. The beam protection component according to claim 8, wherein, The expansion groove (70) has at least two adjacent, straight groove segments (80), wherein the straight groove segments (80) have a groove segment angle (87) of less than 180° between them.

10. The beam protection component according to claim 9, wherein, The angle (87) of the groove section is less than 160°.

11. The beam protection component according to claim 10, wherein, The angle (87) of the groove section is less than 150°.

12. The beam protection component according to claim 1, wherein, The expansion groove (70) has at least two adjacent, curved groove sections (80).

13. The beam protection component according to claim 12, wherein the curved groove section (80) has a radius of curvature of at least 5 mm.

14. The beam protection component according to claim 1, wherein, The beam protection component has at least two expansion grooves (70).

15. The beam protection component according to claim 14, wherein, The beam protection component has multiple expansion grooves (70).

16. The beam protection component according to claim 14 or 15, wherein, The expansion grooves (70) are constructed parallel to each other on the expansion section (68).

17. The beam protection component according to claim 14 or 15, wherein adjacent expansion grooves (70) have the same spacing from each other.

18. The beam protection component according to claim 1 or 2, wherein at least one expansion groove (70) is configured for accommodating fasteners (58).

19. The beam protection component according to claim 18, wherein, The expansion groove (70) is configured for accommodating screws (60) and / or rivets.

20. The beam protection component according to claim 1 or 2, wherein, The expansion groove (70) has a groove depth (89) perpendicular to the beam protection surface (64).

21. The beam protection component according to claim 1 or 2, wherein, The expansion groove (70) has an interruption (71).

22. The beam protection component according to claim 1 or 2, wherein, The protective section (62) is made of copper.

23. The beam protection component according to claim 1 or 2, wherein, The protective section (62) has a reinforced bend (65) along its longitudinal edge.

24. The beam protection component according to claim 1 or 2, wherein, The protective section (62) is perpendicular to the protective surface (64) and has a material thickness of at least 5 mm.

25. The beam protection component according to claim 1 or 2, wherein, The protective section (62) is plate-shaped.

26. The beam protection component according to claim 1 or 2, wherein, The beam protection component (44) is plate-shaped.

27. The beam protection component according to claim 1 or 2, wherein, The beam protection surface (64) is constructed by sandblasting to prevent slag from adhering to the beam protection surface (64).

28. The beam protection component according to claim 18, wherein, The expansion groove (70) has an interruption (71) at the height of the fastener (58).

29. A component mechanism having a carrier (98) and at least one beam protection component (44) according to any one of the preceding claims, wherein, The beam protection component (44) is arranged to be detachably held on the carrier (98).

30. The component mechanism according to claim 29, wherein, The component mechanism has at least two beam protection components (44), wherein each of the beam protection components (44) is arranged to be held on the carrier (98).

31. The component mechanism according to claim 30, wherein, The at least two beam protection components (44) have different protection angles (76) that are inclined relative to the beam protection direction (48) of the component mechanism (96).

32. The component mechanism according to claim 30 or 31, wherein, At least one beam protection component (44) is fixed to the carrier (98) by another beam protection component (44).

33. A bottom assembly for a laser beam processing machine, said bottom assembly having at least one beam protection component (44) according to any one of claims 1 to 28 and / or a component mechanism (96) according to any one of claims 29 to 32, wherein, The beam protection component (44) is configured to protect the bottom assembly (14) from damage caused by the laser beam (18) of the laser beam processing machine (10).

34. The bottom component of claim 33, wherein, The beam protection direction (48) of the beam protection component (44) is oriented parallel to the processing direction (20) of the laser beam (18).

35. The bottom component according to claim 33 or 34, wherein, The bottom assembly has at least one bottom module (22) and a suction device (40) fluidly connected to the bottom module (22), wherein at least one protective section (62) of the at least one beam protection component (44) is arranged on the side of the suction device (40) facing the beam protection direction (48).

36. The bottom component of claim 35, wherein, The bottom assembly has at least two bottom modules (22), wherein the bottom modules (22) are configured to be separated by a partition (36), wherein at least one protective section (62) of the at least one beam protection component (44) is arranged on the side of the partition (36) facing the beam protection direction (48).

37. A laser beam processing machine, the laser beam processing machine having a bottom assembly (14) according to any one of claims 33 to 36, wherein, The bottom component (14) is arranged below the laser beam processing area (16) of the laser beam processing machine (10).

38. The laser beam processing machine according to claim 37, wherein in a projection view along the processing direction (20) of the laser beam (18), the bottom assembly (14) is completely shielded by the beam protection surface (64) of the beam protection component (44).

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