Machine-based device for separating workpiece parts from remaining grid

Abstract

The utility model relates to a machine-based device for separating workpiece parts (2) of split workpiece machining of a product complex (5) from a remaining grid (3), comprising a holding device (6), a separating unit (14) and a product storage (15). The holding device (6) is designed to effectively fix the product assembly (5) in the direction of gravity before the workpiece parts (2) are separated and to effectively fix the remaining grid (3) in the direction of gravity after the workpiece parts (2) are separated. By means of the separating unit (14), the workpiece parts (2) separated from the product combination (5) fixed on the holding device (6) reach the product storage part (15) under the action of gravity. By means of the distance adjusting device (16), the vertical distance of the product storage part (15) to the product combination (5) fixed by means of the holding device (6) can be variably adjusted according to the geometry of the workpiece part (2) detached from the product combination (5).

Description

TECHNICAL FIELD

[0001] The present application relates to a machine-like device for separating a workpiece component present as a split-processed workpiece, in particular a sheet metal, from a remaining grid present as another split-processed workpiece in a product combination composed of the remaining grid and the workpiece component under the action of gravity,

[0002] • wherein the machine-like device has a holding device, a separating unit and a product storage,

[0003] • wherein the holding device is configured to effectively fix the product combination in the direction of gravity before separating the workpiece component and to effectively fix the remaining grid in the direction of gravity after separating the workpiece component,

[0004] • wherein the separating unit is configured to detach the workpiece component from the product combination fixed by means of the holding device and

[0005] • wherein the product storage is arranged below the product combination fixed by means of the holding device at a vertical distance and is configured to place the workpiece component detached from the product combination by means of the separating unit under the action of gravity. BACKGROUND

[0006] In split sheet metal processing by means of a splitting device, for example by means of a laser splitting device, a sheet metal component and a remaining grid at least partially surrounding the sheet metal component occur as a processed product. In order to simplify the transport of the processed product away from the splitting device, the sheet metal component is not completely split from the remaining grid in the split sheet metal processing. Rather, a micro- or nanoscale connection point is left between the remaining grid and the sheet metal component, which enables the remaining grid and the sheet metal component to be transported as a whole when being removed from the splitting device. Furthermore, it is conceivable that the sheet metal component produced in the split sheet metal processing is held in the remaining grid on the basis of occurring thermal stresses or on the basis of a kink after the splitting process. The described separation of the sheet metal component from the remaining grid takes place in a method step following the split sheet metal processing.

[0007] The prior art mentioned at the outset is disclosed in JP 2000094057 A. This prior art relates to a machine assembly and a method for punching sheet metal processing. At a punching station of the machine assembly, a sheet metal component and a remaining grid are produced from a sheet metal, wherein the sheet metal component is connected to the remaining grid via micro-connections after the end of the punching sheet metal processing. The combination of the remaining grid and the sheet metal component attached thereto is moved to a separation station, at which a plurality of roller pairs are arranged one after the other in the movement direction of the remaining grid and the sheet metal component and alternately upwardly and downwardly relative to each other perpendicular to the movement direction of the remaining grid and the sheet metal component. A gap is configured between the rollers of each roller pair. The remaining grid and the sheet metal component from the punching station are passed through the gaps on the plurality of roller pairs arranged one after the other in the movement direction. Based on the roller pairs being offset relative to each other, the remaining grid and the sheet metal component are bent a plurality of times when passing through the roller pairs. At the same time, the remaining grid and the sheet metal component are placed in an oscillation perpendicular to the movement direction. As a result, the micro-connections left between the remaining grid and the sheet metal component in the punching sheet metal processing are broken and the sheet metal component detached from the remaining grid falls onto a product storage arranged below the roller pairs of the separation station. Utility model content

[0008] It is the task of the present application to provide a machine-like device for separating a workpiece component from a remaining grid, on which a regular placement of the workpiece component separated from the remaining grid on a product storage of the machine-like device is ensured even in different application cases.

[0009] According to the present application, this task is solved by the machine-like device according to the present application.

[0010] The present application proposes a machine-like device for separating a workpiece component from a remaining grid under the influence of gravity in a product combination of the remaining grid and the workpiece component, the workpiece component being present as a sheet-like workpiece, in particular as a processed product of a split processing of a sheet metal, the remaining grid being present as a further processed product of the split processing,

[0011] wherein the machine-like device has a holding device, a separation unit and a product storage,

[0012] wherein the holding device is configured for effectively fixing the product combination in the direction of gravity before the separation of the workpiece component and for effectively fixing the remaining grid in the direction of gravity after the separation of the workpiece component,

[0013] wherein the separation unit is configured for detaching the workpiece component from the product combination fixed by means of the holding device, and

[0014] wherein the product storage is arranged with a vertical spacing below the product aggregate secured by means of the holding device and is configured for the workpiece parts detached from the product aggregate by means of the separating unit to be placed under the influence of gravity,

[0015] characterized in that

[0016] The machine-like device has a spacing adjustment device configured to adapt the vertical spacing of the product storage to the product aggregate secured by means of the holding device to the geometric configuration of the workpiece parts detached from the product aggregate.

[0017] In the case of the present application, the drop height of the workpiece parts detached from the remaining grid by means of the separating unit is adapted in relation to the application and, here, in accordance with the geometric configuration of the workpiece parts. By matching the drop height of the workpiece parts to the geometric configuration of the workpiece parts in the present application, a regular placement, in particular a regular stacking, of the workpiece parts on the product storage under the influence of gravity is achieved. For example, uncontrolled rotation of the workpiece parts falling downwards or an inclined jamming of the workpiece parts relative to the product storage or an irregular stacking of the workpiece parts on the product storage is avoided. The regular placement of the workpiece parts on the product storage and the defined positioning associated therewith is advantageous, in particular, in the case of an automatic unloading of the product storage, for example by means of a robot. Furthermore, by optimally adapting the drop height, damage to the workpiece parts placed under the influence of gravity is avoided. A minimum drop height of the workpiece parts is preferably adapted.

[0018] The present application also proposes a particular embodiment of the machine-like device.

[0019] In the present configuration, it can be provided that the spacing adjustment device is configured to adapt the vertical spacing of the product storage to the product aggregate secured by means of the holding device in accordance with the thickness of the workpiece parts detached from the product aggregate. As a criterion for determining the size of the drop height, for example, the surface extension of the workpiece parts can be considered. In the case of the present configuration, the drop height of the workpiece parts detached from the remaining grid is determined in size and adapted in accordance with the thickness of the workpiece parts. In the experimental use of the machine-like device of the present application for separating sheet metal parts from a remaining grid, it has proved suitable for sheet metal parts to apply a drop height which is one millimeter to one centimeter greater than the thickness of the sheet metal.

[0020] It can be provided in the present application that the spacing adjustment device is configured for variable vertical positioning of the holding device relative to the product storage and / or for variable vertical positioning of the product storage relative to the holding device. This relates to the possibility of the present application to set the drop height of the workpiece parts split off from the remaining grid of the segmented workpiece in application-related manner. In the case of the present application, the spacing adjustment device can accordingly adjust only the vertical position of the holding device and the combination of workpiece parts and remaining grid fixed thereon, or only the vertical position of the product storage, or both the vertical position of the holding device and the vertical position of the product storage.

[0021] For this purpose it can be provided that the spacing adjustment device has a lifting device by means of which the holding device is variably positionable in vertical direction relative to the product storage and / or the product storage is variably positionable in vertical direction relative to the holding device.

[0022] As a lifting device it can be considered for example a conventional traction chain device or a conventional traction rope device by means of which the vertical position of the holding device and the combination of remaining grid and workpiece parts fixed thereon on the holding device can be set depending on the workpiece geometry, in particular depending on the workpiece thickness. In addition or alternatively, the product storage can be provided with a height adjustment of conventional construction, for example a scissor lift mechanism. The height-adjustable product storage can be configured for example as a receiving table or a conveyor belt. As a non-height-adjustable product storage it can be considered for example a simple workpiece tray or directly the receiving surface of the machine-like device of the present application.

[0023] In a preferred configuration of the present application, the holding device is provided with a carrier structure, the spacing adjustment device has a spacing holder which is arranged in vertical direction between the carrier structure and the holding device and whose vertical dimension defines the vertical spacing between the carrier structure and the holding device; for variable vertical positioning of the holding device relative to the product storage, the vertical dimension of the spacing holder between the carrier structure and the holding device is variably adjustable.

[0024] In an advantageous extension of the present application, the spacing holder between the holding device and its carrier structure is configured as a compressed air bellows with variably adjustable vertical dimension or as a spring bellows with variably adjustable vertical dimension.

[0025] In the case of a further configuration of the machine-like device of the present application, the separation unit has a vibration generator by means of which the product combination of remaining grid and workpiece parts fixed on the holding device is brought into vertical vibration in order to split off the workpiece parts. In this case, the product combination is effectively fixed on the holding device not only in the direction of gravity but also in the opposite direction.

[0026] The vibration generator is configured to generate a vertical vibration of the product aggregate which causes the workpiece component to be detached from the product aggregate in such a way that the vibration generator is configured to generate a vertical vibration of the holding device which causes the workpiece component to be detached from the product aggregate.

[0027] In the configuration of the application, a carrier structure is provided for the holding device, a spring-damper device which is resilient in the vertical direction is provided between the holding device and the carrier structure, and the holding device is vibrationally supported on the carrier structure in the vertical direction via the spring-damper device. In order to prevent unwanted vibrations of the carrier structure and, if necessary, of the components connected to the carrier structure, the carrier structure is here as far as possible vibrationally decoupled from the holding device by means of the spring-damper device.

[0028] In a further preferred configuration of the application, a spacing holder arranged between the carrier structure and the holding device forms the spring-damper device. The spacing holder is variably adjustable in its vertical dimension and is thereby also adapted to adjust the drop height of the workpiece component.

[0029] The separation unit can be used to adjust the drop height of the workpiece component.

[0030] In the application, as a spacing holder having a dual function, in particular, a compressed air bellows which is variably adjustable in its vertical dimension and / or a spring bellows which is variably adjustable in its vertical dimension can be considered.

[0031] The product aggregate consisting of the remaining grid and the workpiece component and / or the remaining grid alone is preferably fixed in the vertical direction on the edges by means of the holding device of the application. For this purpose, the holding device of the application has at least one holding mechanism of corresponding configuration.

[0032] In an advantageous configuration of the application, the holding device has at least two holding mechanisms which oppose each other at a horizontal distance and fix the edges of the product aggregate and / or the edges of the remaining grid in the vertical direction. The holding device has holding mechanisms on which, before the detachment of the workpiece component, the product aggregate is effectively supported in the direction of gravity, and, after the detachment of the workpiece component, the remaining grid is effectively supported in the direction of gravity, and the holding mechanisms oppose each other parallel to the main plane of the product aggregate fixed on the holding device at a horizontal distance relative to each other. In order for the holding device to be adaptable to product aggregates and / or remaining grids of different formats, the horizontal distance of the holding mechanisms is variably adjustable. BRIEF DESCRIPTION OF DRAWINGS

[0033] The application is explained in detail below on the basis of exemplary schematic drawings. The drawings show:

[0034] Figure 1A first configuration of a machine device for separating a split sheet metal processed sheet metal component from a remaining grid is shown,

[0035] Figure 2 A second configuration of a machine device for separating a split sheet metal processed sheet metal component from a remaining grid is shown, and

[0036] Figure 3 A third configuration of a machine device for separating a split sheet metal processed sheet metal component from a remaining grid is shown. DETAILED DESCRIPTION

[0037] Figure 1 A machine device 1 for separating a workpiece component in the form of a sheet metal component 2 from a remaining grid 3 is shown. The sheet metal component 2 and the remaining grid 3 are processed products of a split sheet metal processing which has been implemented by means of a laser cutting machine which is arranged next to the machine device 1 and is not shown in the figures. In the split processing by means of the laser cutting machine, micro joints 4 have been left between the sheet metal component 2 and the remaining grid 3 and between the sheet metal components 2 which are adjacent to each other. On the basis of the micro joints 4, Figure 1 The sheet metal component 2 and the remaining grid 3 form a product union 5 which has been guided as a whole from the laser cutting machine and transferred to the machine device 1.

[0038] On the machine device 1, the product union 5 which consists of the remaining grid 3 and the sheet metal component 2 is fixed effectively in the direction of gravity by means of a holding device 6. The holding device 6 has a rigid base plate 7 and a holding mechanism which is configured as a gripper 8. The gripper 8 grips the product union 5, more specifically the remaining grid 3, on its edge.

[0039] The horizontal spacing of the grippers 8 from each other can be variably set in the direction of the double-headed arrow 9 (horizontal adjustment direction) in order to adapt the holding device 6 to different product union specifications. Furthermore, the grippers 8 can be set in relation to the base plate 7 of the holding device 6 in the direction of the double-headed arrow 10 (vertical adjustment direction). By adjusting the grippers 8 in the vertical adjustment direction 10, the holding device 6 is adapted to varying product union thicknesses. Here, the grippers 8 are positioned in the vertical adjustment direction 10 such that a gap 11 remains between the upper side of the product union 5 which is supported by the grippers 8 and the lower side of the base plate 7 of the holding device 6, which has a gap width which is significantly smaller than the thickness of the product union 5 and thus significantly smaller than the thickness of the metal sheets from which the product union 5 has been produced on the laser cutting machine.

[0040] A vibrator 12 with a vibration generator 13 is attached on the upper side of the base plate 7. In the example shown, an unbalance exciter is provided as the vibrator 12. The vibration generator 13 together with the holding device 6 forms a separation unit 14.

[0041] The holding device 6 and the product aggregate 5 are brought into vertical vibration by means of the vibration generator 13. On the basis of the vibration of the product aggregate 5, the micro-connections 4 remaining between the components of the product aggregate 5 break and the sheet metal parts 2 are detached from the product aggregate 5 fixed by means of the holding device 6. The sheet metal parts 2 detached from the product aggregate 5 fall under the action of gravity onto a product storage arranged below the holding device 6. In the example shown, the product storage is formed by a conventional tray car 15. Figure 1

[0042] In order to place the sheet metal parts 2 detached from the product aggregate 5 in an orderly manner on the tray car 15, the falling height h of the sheet metal parts 2 is set in accordance with the geometric configuration of the sheet metal parts 2 detached from the product aggregate 5. In the example shown, the setting of the falling height h of the sheet metal parts 2 is performed in accordance with the thickness of the sheet metal parts 2.

[0043] In order to set the falling height h of the sheet metal parts 2, the machine device 1 has a spacing adjustment device 16.

[0044] The spacing adjustment device 16 comprises two compressed air bellows 17 which are attached to a compressor 19 of the spacing adjustment device 16 which is provided with a pressure regulator 18.

[0045] The holding device 6 is supported in the direction of gravity on a load-bearing structure 20 of the machine device 1 via the compressed air bellows 17. The compressed air bellows 17 form a spacing holder between the holding device 6 and the load-bearing structure 20. By loading the compressed air bellows 17 with a corresponding pressure, the vertical dimension of the compressed air bellows 17 and thus the vertical position of the holding device 6 and the falling height h of the sheet metal parts 2 fixed on the holding device 6 as part of the product aggregate 5 are set to the desired value. As an alternative to the compressed air bellows 17, a spring bellows of conventional form with a variable settable vertical dimension can be considered.

[0046] ​During the vertical vibration of the holding device 6 for detaching the sheet metal part 2 from the product aggregate 5 by means of the vibration generator 13, the compressed air bellows 17 serve as a spring-damper device which is resilient in the vertical direction for vibration decoupling of the carrier structure 20 with respect to the holding device 6. By means of the compressed air bellows 17, the vertical vibration of the holding device 6 is prevented as far as possible from being transmitted to the carrier structure 20. In this regard, vibration decoupling of the carrier structure 20 is important, since the carrier structure 20 is connected as a component of an upper automation unit of a laser cutting machine to other components of the automation unit.

[0047] After the detachment of the sheet metal part 2 from the product aggregate 5, the remaining grid 3 remains on the holding device 6. The carrier structure 20 is moved together with the holding device 6 and the remaining grid 3 supported thereon to a position next to the pallet car 15 in which the sheet metal part 2 is accommodated. There, the remaining grid 3 is placed by means of the opening of the gripper 8 onto a remaining grid pallet provided for this purpose.

[0048] The pallet car 15 is unloaded by means of an unloading robot. On the basis of the regular placement of the sheet metal part 2 on the pallet car 15, the provision of a camera system for component recognition of the unloading robot enables in particular the sheet metal part placed on the pallet car 25 to be recognized. The unloading robot can thus functionally reliably extract the sheet metal part 2 from the pallet car 15.

[0049] The machine device 30 shown in Figure 2 differs from the machine device 1 of Figure 1 in that technical measures for variable setting of the drop height h of the sheet metal part 2 and for vibration decoupling of the holding device 6 from the carrier structure 20 are provided.

[0050] For variable setting of the drop height h of the sheet metal part 2, the machine device 30 has a traction rope device 31 fastened on the carrier structure 20 as a spacing adjustment device. By means of a controlled drive 32 of the traction rope device 31, the separation unit 14 with the vibration generator 13 and the holding device 6 fixed thereon and the product aggregate 5 are positioned via the carrier structure 20 in the vertical direction with respect to the upper side of the pallet car 15 in such a way that the desired value for the drop height h of the sheet metal part 2 is obtained. Instead of the traction rope device 31, a corresponding traction chain device can also be provided.

[0051] For vibration decoupling of the holding device 6 placed in vertical vibration by means of the vibration generator 13 from the carrier structure 20 of the machine device 30, a spring-damper device which is resilient in the vertical direction is provided, which has a coil spring 33.

[0052] In Figure 3On the machine-type device 40 shown, the drop height h of the metal plate component 2 is adjustable via an adjustable-height support platform 41. A tray-shaped platform 42 is configured as a product storage section for the metal plate component 2 of the product assembly 5. The vertical distance between the platform 42 and the product assembly 5, which is fixed by a holding device 6, is adjusted to a value by a controlled height adjustment device 43, which is configured as a spacing adjustment device, based on the thickness of the metal plate being processed and the metal plate component 2. This value ensures that the metal plate component 2, separated from the remaining grid 3, is neatly placed on the platform 42.

[0053] In order to isolate the load-bearing structure 20 from vibration relative to the retaining device 6, Figure 3 It is equipped with a spring-damper device that is elastic in the vertical direction, which has a spring bellows 44.

[0054] In order to adjust the drop height h of the metal plate component 2, in Figure 3 Spring bellows 44 is not used in this design. However, it is conceivable that... Figure 3 The height-adjustable support 41 shown is Figure 1 The spacing adjustment device 16 or with Figure 2 The spacing adjustment device 31 is combined. In this case, in order to adjust to the optimal drop height h of the metal plate component 2, the vertical position of the holding device 6 and the vertical position of the platform 42 of the support platform 41 can be adjusted accordingly.

Claims

1. Machine device for separating a workpiece component from a remaining grid, the workpiece component being present as a machining product of a segmented machining of a plate-like workpiece, the remaining grid being present as a further machining product of the segmented machining, the separation being the separation of the workpiece component in a product combination (5) consisting of the remaining grid (3) and the workpiece component (2) under the action of gravity, the machine device having a holding device (6), a separation unit (14) and a product storage, wherein the holding device (6) is configured to effectively fix the product combination (5) in the direction of gravity before the separation of the workpiece component (2) and to effectively fix the remaining grid (3) in the direction of gravity after the separation of the workpiece component (2), wherein the separation unit (14) is configured to detach the workpiece component (2) from the product combination (5) fixed by means of the holding device (6), and wherein the product storage is arranged below the product combination (5) fixed by means of the holding device (6) at a vertical spacing and is configured to place the workpiece component (2) detached from the product combination (5) by means of the separation unit (14) under the action of gravity, characterized in that the machine device has a spacing adjustment device configured to adjust the vertical spacing of the product storage to the product combination (5) fixed by means of the holding device (6) in accordance with the geometric configuration of the workpiece component (2) detached from the product combination (5). wherein The spacing adjustment device is configured to adjust the vertical spacing of the product storage to the product combination (5) fixed by means of the holding device (6) in accordance with the thickness of the workpiece component (2) detached from the product combination (5). The spacing adjustment device is configured for a variable vertical positioning of the holding device (6) relative to the product storage and / or for a variable vertical positioning of the product storage relative to the holding device (6). The spacing adjustment device has a lifting device by means of which the holding device (6) can be variably positioned in the vertical direction relative to the product storage and / or the product storage can be variably positioned in the vertical direction relative to the holding device (6).

5. Machine device for separating a workpiece component from a remaining grid according to claim 3, characterized in that • a bearing structure (20) is provided for the holding device (6), • the spacing adjustment device (16) has a spacing holder which is arranged in the vertical direction between the bearing structure (20) and the holding device (6) and whose vertical dimension defines the vertical spacing between the bearing structure (20) and the holding device (6), • for a variable vertical positioning of the holding device (6) relative to the product storage (15), the vertical dimension of the spacing holder between the bearing structure (20) and the holding device (6) is variably adjustable. As a spacing holder with a variably adjustable vertical dimension, at least one compressed air bellows (17) with a variably adjustable vertical dimension and / or at least one spring bellows with a variably adjustable vertical dimension is provided. ​ 2. A machine means for separating a workpiece component from a remaining grid according to claim 1, characterised in that, ​ 3. Machine means for separating a workpiece component from a remaining grid according to claim 1 or 2, characterized in that, ​ 4. A machine means for separating a workpiece component from a remaining grid according to claim 3, characterised in that, ​ ​ ​ ​ ​ 6. A machine means for separating a workpiece component from a remaining grid according to claim 5, wherein, ​ 7. A machine means for separating a workpiece component from a remaining grid according to claim 1 or 2, characterised in that, The separating unit (14) has a vibration generator (13) which is configured to generate a vertical vibration of the product aggregate (5) fixed by means of the holding device (6) which causes the workpiece component (2) to detach from the product aggregate (5).

8. A machine means for separating a workpiece component from a remaining grid according to claim 7, wherein, The vibration generator (13) is configured to generate a vertical vibration of the product aggregate (5) which causes the workpiece component (2) to detach from the product aggregate (5) in such a way that The vibration generator (13) is configured to generate a vertical vibration of the holding device (6) which causes the workpiece component (2) to detach from the product aggregate (5).

9. Machine means for separating a workpiece component from a remaining grid according to claim 8, characterized in that • a bearing structure (20) is provided for the holding device (6) • a spring-damper device which is resilient in the vertical direction is provided between the holding device (6) and the bearing structure (20), via which the holding device (6) is vibrationally supported on the bearing structure (20) in the vertical direction.

10. Machine means for separating a workpiece component from a remaining grid according to claim 5, characterized in that • a spring-damper device which is resilient in the vertical direction is provided between the holding device (6) and the bearing structure (20), via which the holding device (6) is vibrationally supported on the bearing structure (20) in the vertical direction, • the resilient spring-damper device is constituted by a spacing holder between the bearing structure (20) and the holding device (6), • the vertical dimension of the spring-damper device is variably settable for the variable vertical positioning of the holding device (6) relative to the product storage.

11. A machine means for separating a workpiece component from a remaining grid according to claim 1 or 2, characterised in that, The holding device (6) has at least one holding mechanism (8) by means of which the product aggregate (5) can be effectively fixed on its edge in the direction of the force of gravity.

12. Machine means for separating a workpiece component from a remaining grid according to claim 11, characterized in that • the holding device (6) has holding mechanisms (8) on which, prior to the detachment of the workpiece component (2), the product aggregate (5) is effectively supported in the direction of the force of gravity and, after the detachment of the workpiece component (2), the remaining grid (3) is effectively supported in the direction of the force of gravity, and which lie opposite one another parallel to the main plane of the product aggregate (5) fixed on the holding device (6) in a horizontal spacing relative to one another, and • the horizontal spacing of the holding mechanisms (8) relative to one another is variably settable.

13. A machine means for separating a workpiece component from a remaining grid according to claim 1 or 2, characterised in that, The sheet-like workpiece is a metal sheet.

14. Machine means for separating a workpiece component from a remaining grid according to claim 6, characterized in that • a spring-damper device which is resilient in the vertical direction is provided between the holding device (6) and the bearing structure (20), via which the holding device (6) is vibrationally supported on the bearing structure (20) in the vertical direction • said spring-damper device, which is elastic, is constituted by said at least one compressed air bellows (17) having a variable vertical dimension and / or by said at least one spring bellows having a variable vertical dimension, • in order to maintain the variable vertical positioning of the device (6) with respect to the product storage, the vertical dimension of said at least one compressed air bellows (17) and / or the vertical dimension of said at least one spring bellows is variable.

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