Flexible hold-down structure for placing on a processed semi-finished product

Abstract

The invention relates to a hold-down structure (30) for placing on a semi-finished product (10) on the upper face (11) of the semi-finished product (10), wherein in a processing state, the semi-finished product (10) is designed to be flat, plate-shaped, and / or panel-shaped and in each case comprises at least one workpiece (110) to be separated from the semi-finished product (10); the hold-down structure (30) is configured to flexibly adapt to a respective deformation, preferably to a respective sag (13), of the semi-finished product (10) when the semi-finished product (10) is in a supported state (L1) in order to separate the at least one workpiece (110) in a release direction (FR) and to rest on the deformed semi-finished product (10), preferably over the entire surface thereof, in order to block a movement of the at least one workpiece (110), preferably during the separation process, from the semi-finished product (10) in the direction of the upper face (11) through the hold-down structure (30). The invention further relates to a method for separating at least one workpiece (110) from a semi-finished product (10), wherein a hold-down structure (30) is used, and to an assembly (1) having a hold-down structure (30).

Description

[0001] Flexible hold-down structure for mounting on a machined semi-finished product

[0002] DESCRIPTION

[0003] The present invention lies in the field of semi-finished product processing and relates to a hold-down structure for placement on a definedly supported semi-finished product in order to achieve the separation of at least one workpiece, which is preferably produced on the semi-finished product by a cutting process. The present invention further relates to a method for separating at least one workpiece from a semi-finished product, wherein such a hold-down structure is used. The present invention further relates to an arrangement comprising a hold-down structure, a support device, and an excitation structure.

[0004] To separate manufactured, i.e., cut, workpieces from a semi-finished product in the form of a sheet metal plate, so-called exciter plates (impact plates) are generally used. These plates are placed on the top side of the sheet metal plate and are configured to generate and apply a mechanical load to separate the workpieces. The semi-finished product and the exciter plate are in a defined position to ensure that the workpieces fall during and / or after separation.

[0005] With relatively thin sheet metal plates, geometry, material properties, and storage conditions cause the plate to sag, resulting in a gap between the exciter plate and the sheet metal plate. During the workpiece separation process, the workpieces are accelerated and / or flung towards the exciter plate. This can cause the workpieces to come to rest on the remaining sheet metal in the area of ​​the gap. These remaining workpieces, along with the remaining sheet metal, are then scrapped, unnecessarily increasing the number of rejects.

[0006] It is an object of the present invention to provide a holding structure for a semi-finished product with at least one workpiece, which is improved in terms of its functionality in order to ensure a more reliable separation of the at least one workpiece and, above all, to reduce the number of unnecessary scrap workpieces. Furthermore, it is an object of the present invention to provide a method for separating at least one workpiece from a semi-finished product using such a holding structure. It is also an object of the present invention to provide an arrangement with such a holding structure.

[0007] The problem is solved by the features of claims 1, 8 and 12. Further embodiments and applications of the present invention will become apparent from the dependent claims and are explained in more detail in the following description with partial reference to the figures.

[0008] According to a first general aspect, the present invention relates to a hold-down structure for resting on a semi-finished product at an upper surface of the semi-finished product, wherein the semi-finished product in a processing state is essentially flat, essentially planar, essentially plate-shaped and / or essentially sheet-shaped and comprises at least one workpiece for separation from the semi-finished product, wherein the hold-down structure is configured to adapt flexibly in a storage state of the semi-finished product for separation of the at least one workpiece essentially in a release direction to a respective deformation, preferably to a respective sag, of the semi-finished product and to rest substantially on the deformed semi-finished product, preferably to rest substantially uniformly, in order to prevent movement of the at least one workpiece, preferably during the separation process.to essentially block and / or prevent the semi-finished product from moving towards the top side through the hold-down structure.

[0009] The present invention provides a holding structure for a machined semi-finished product which, in its stored state, flexibly adapts to the deformation of the semi-finished product and essentially rests on the deformed semi-finished product, thus making essentially planar contact with it. This prevents acceleration or jumping of at least one workpiece during the separation process when a mechanical load is generated and applied. This prevents the separated workpiece from remaining on the remaining surface of the semi-finished product.

[0010] The mechanical load can, for example, comprise at least one shock, at least one vibration, or a combination thereof. The mechanical load can be generated by an excitation structure, preferably by at least one excitation unit. The support condition can be one in which the semi-finished product is attached, preferably clamped, at its respective edges on opposite sides, for example, if the semi-finished product is designed as a substantially rectangular sheet or plate. The semi-finished product is preferably a sheet or plate made of a metallic material or a metallic alloy, for example, stainless steel, structural steel, or aluminum. The semi-finished product can be manufactured by at least one rolling operation. The semi-finished product is preferably processed by a cutting operation, for example, using a laser beam.

[0011] According to a further aspect of the present invention, it can be provided that the hold-down structure is designed to be essentially dimensionally stable and / or at least partially dimensionally variable, preferably reversibly deformable, at least partially along a first extension direction and / or essentially along a second extension direction and / or essentially along a bearing direction for bearing on the semi-finished product, and preferably along a first extension direction and the second extension direction are each oriented perpendicular to the bearing direction.

[0012] The restraint structure can be designed, at least in sections, to be variable in shape, such as a mat or a blanket. Alternatively, the restraint structure can be designed, at least in sections, to be essentially dimensionally stable, such as a plate or several plates, which are articulated together, for example, via hinge elements or other connecting elements.

[0013] It is possible that the hold-down structure is formed at least partially from a substantially linear elastic material and / or at least partially from a non-linear elastic material, which has a defined density and / or a defined stiffness to allow the hold-down structure to adapt flexibly to the respective deformation of the semi-finished product.

[0014] The defined density and / or stiffness can be greater or less than the density and / or stiffness of the material of the semi-finished product and thus of at least one workpiece. This can result, for example, in different vibration behavior between the hold-down structure and the semi-finished product during the separation process with the accompanying introduction of mechanical stress.

[0015] According to another aspect of the present invention, it can be provided that the holding structure has at least one of the following configurations, at least in sections: substantially plate-shaped, substantially flat, mat-shaped, net-shaped, sieve-shaped, grid-shaped, slotted.

[0016] This ensures appropriate flexibility or variability in adapting the hold-down structure to the respective deformation of the semi-finished product in the defined storage condition for separating at least one workpiece.

[0017] It is possible that the hold-down structure is multi-part and comprises at least a first hold-down part and at least a second hold-down part, wherein the at least first hold-down part and the at least second hold-down part are designed differently with respect to at least one of the following structural parameters: a density; a stiffness; a position; a shape, preferably comprising a thickness; wherein preferably the at least first hold-down part and the at least second hold-down part are each designed to be substantially plate-shaped and / or substantially reversibly deformable.

[0018] According to a further aspect of the present invention, it can be provided that the hold-down structure is designed in a sandwich shape and comprises at least two hold-down parts which are arranged at least partially one above the other and / or are configured to be arranged in a similar manner, preferably substantially along a bearing direction for bearing onto the semi-finished product, wherein preferably the at least two hold-down parts are designed differently with respect to at least one of the following structural parameters: a density; a stiffness; a shape, preferably comprising a thickness.

[0019] The first hold-down element and the second hold-down element can each be manufactured as a separate component. It is possible that the first hold-down element and the second hold-down element are essentially identical to each other with respect to at least one structural parameter, as disclosed herein.

[0020] It is possible that the hold-down structure comprises three hold-down elements, each essentially plate-shaped, wherein a first hold-down element and a second hold-down element are spaced apart from each other by a gap and / or arranged opposite each other on a third hold-down element, the third hold-down element being configured to rest on the semi-finished product, wherein preferably the combined mass of the first and second hold-down elements is greater than the mass of the third hold-down element. This allows, for example, improved flexible adaptability of the hold-down structure.The formation of a gap, for example, allows for independent vibration behavior of the first and second hold-down parts during a separation process, such as when a mechanical load is applied, including shock, vibration, or a combination thereof. Furthermore, this prevents collisions between the hold-down parts in any position.

[0021] According to a second general aspect, the present invention relates to a method for separating at least one workpiece from a semi-finished product, wherein the semi-finished product is essentially flat, essentially planar, essentially plate-shaped and / or essentially sheet-shaped in a processing state, wherein preferably the at least one workpiece is produced by a cutting process, preferably by means of a laser beam, comprising: • fastening, preferably clamping, defined semi-finished product edges, preferably mutually opposing semi-finished product edges, of the semi-finished product to a support device in order to create a support state of the semi-finished product for separating the at least one workpiece essentially in a release direction;

[0022] • Placing a hold-down structure as disclosed herein substantially in a bearing direction on the semi-finished product on a top side of the semi-finished product in order to substantially cover and / or act upon the semi-finished product, preferably the at least one workpiece, with the hold-down structure, wherein the hold-down structure flexibly adapts to any deformation, preferably any sag, of the semi-finished product in the storage state and substantially rests on the deformed semi-finished product, preferably substantially uniformly; • Generating a mechanical load by means of an excitation structure, wherein the mechanical load is configured to separate the at least one workpiece from the semi-finished product;• Introducing the (generated) mechanical load into the semi-finished product via the hold-down structure and separating the at least one workpiece from the semi-finished product, wherein movement of the at least one workpiece towards the top side by the hold-down structure is essentially blocked at least during the introduction of the mechanical load.

[0023] According to a further aspect of the present invention, it can be provided that the holding structure and the semi-finished product oscillate at least during the introduction of the mechanical load and / or partially after the introduction of the mechanical load, each at a different frequency and / or each in a different frequency range.

[0024] It is possible that the process includes: • Applying a defined pressure load to the semi-finished product on the top side of the semi-finished product by the hold-down structure depending on the mechanical load and / or the configuration of the semi-finished product, so that a substantially uniform contact of the hold-down structure on the semi-finished product is ensured at least during the introduction of the mechanical load and / or during the separation of at least one workpiece from the semi-finished product.

[0025] The configuration of the semi-finished product can be characterized by at least one material parameter and / or by at least one geometry parameter.

[0026] According to another aspect of the present invention, the method may comprise:

[0027] • Arranging the exciter structure on the hold-down structure; • Attaching, preferably by clamping or screwing, at least one defined structural edge section of the hold-down structure to the exciter structure or to the support device in order to ensure flexible adaptability of the hold-down structure to the respective deformation, preferably to the respective sag, of the semi-finished product.

[0028] According to a third general aspect, the present invention relates to an arrangement comprising: • a holding structure for resting on a semi-finished product on a top surface of the semi-finished product, wherein the semi-finished product in a processing state is essentially flat, essentially planar, essentially plate-shaped and / or essentially sheet-shaped and comprises at least one workpiece for separation from the semi-finished product, wherein the holding structure is configured as disclosed herein; • a bearing device for generating a bearing state in the semi-finished product for separating the at least one workpiece essentially in a release direction; • an excitation structure for generating and / or transmitting a mechanical load for separating the at least one workpiece from the semi-finished product, wherein the arrangement is preferably configured for carrying out a method as disclosed herein.

[0029] To avoid repetition, features relating solely to the device of the holding structure according to the invention and / or disclosed in connection therewith shall also be deemed disclosed and claimable as part of the process, and vice versa. The exemplary embodiments and features of the present invention described above can be combined arbitrarily or expediently. Further details and advantageous effects of the present invention are explained in more detail below with reference to the accompanying figures.

[0030] They show:

[0031] Fig. 1 shows a schematic representation of an arrangement with a first embodiment of the hold-down structure according to the present invention;

[0032] Fig. 2 shows the hold-down structure from Figure 1 in a front view (main view);

[0033] Fig. 3 shows further embodiments of the hold-down structure according to the present invention in a front view (main view);

[0034] Fig. 4 shows a flowchart of a first embodiment of the method according to the present invention.

[0035] Identical or functionally equivalent components or elements are identified in the figures with the same reference numerals. To avoid repetition, reference is sometimes made to the descriptions of other embodiments and / or figures for their explanation.

[0036] The following detailed description of the embodiments shown in the figures serves to illustrate or clarify the invention in no way limiting its scope.

[0037] Figure 1 shows in a schematic representation an arrangement 1 with a first embodiment of the hold-down structure 30 according to the present invention.

[0038] The arrangement 1 comprises a machined semi-finished product 10, an excitation structure 20, the hold-down structure 30 according to the present invention, and a bearing device 40. The semi-finished product 10 is, in its initial state, essentially flat, essentially planar, essentially plate-shaped, and / or essentially sheet-shaped. The semi-finished product 10 is preferably produced by a rolling process. The semi-finished product 10 has a substantially rectangular outline and can be designed as a machined semi-finished product 10 from which at least one workpiece 110 is produced and which can be separated from the semi-finished product 10. For the sake of simplicity, the expression "at least one" in connection with the workpiece 110 will be omitted hereafter.

[0039] The semi-finished product 10 can be characterized by the geometric parameters length, width, and height. For example, the length can be approximately 3000 mm, the width approximately 1500 mm, and the thickness between approximately 1 mm and approximately 30 mm. Of course, the semi-finished product 10 can have other geometric parameters.

[0040] The semi-finished product 10 can be made of at least one of the following materials or a material alloy based on at least one of the following materials: steel, for example stainless steel or structural steel; aluminum; copper; titanium; etc. The material of the semi-finished product 10 can be characterized by at least one of the following material parameters: modulus of elasticity, Poisson's ratio, tensile strength.

[0041] The semi-finished product 10 in the form of the sheet metal plate 10 is described below to further illustrate the present invention.

[0042] The machined sheet metal plate 10 is in storage state LI, the defined storage state for releasing the workpiece 110. The workpiece 110 may have been produced on the sheet metal plate 10 by a cutting process, for example, using a laser beam. The workpiece 110 may be connected to the sheet metal plate 10, i.e., to the remaining grid of the sheet metal plate 10, via at least one so-called joint (a temporary connection, also referred to as a "web"), in order to hold the at least one workpiece 110.

[0043] The sheet plate edges 14 and 15 of the sheet plate 10, together with the exciter structure edges 21 and 22 of the exciter structure 20, and the hold-down structure edges 311, 321, 331 of the hold-down structure 30, are attached to opposing bearing units 41, 42 of the bearing device 40, preferably clamped or screwed in place. Exciter units 23, 24 are arranged on the exciter structure 20 on its upper surface. The exciter units 23, 24 serve to generate a mechanical load for separating the workpiece 110 from the sheet plate 10. The mechanical load can, for example, include at least one impact or at least one vibration, or a combination thereof. The exciter structure 20 is essentially plate-shaped, corresponding to the sheet plate 10, and is characterized by its respective geometric parameters.The excitation structure 20 is arranged on a top surface of the hold-down structure 30 and rests at least partially against and / or on the hold-down structure 30. Compared to the sheet metal plate 10, the excitation structure 20 is relatively rigid and essentially dimensionally stable.

[0044] As can be seen in Figure 1, a deformation 13 occurs in the sheet metal plate 10 under the support condition LI due to geometry, material, and bearing conditions. The deformation 13 can include deflection and / or sagging. In the case of the sheet metal plate 10, the deformation 13 takes the form of sagging 13. The sagging 13 increases from the respective bearing arrangements 41 and 42, and thus from the edges 14 and 15 of the sheet metal plate, up to a maximum. The maximum sagging 13 is located approximately in the middle of the sheet metal plate 10.

[0045] The sheet metal plate 10 has a top side 11 and a bottom side 12. In other words, the sheet metal plate 10 is characterized by a top side 11 and a bottom side 12. In the storage condition LI, the top side 11 is the side of the sheet metal plate 10 that faces the excitation structure 20 and the hold-down structure 30.

[0046] The hold-down structure 30 is configured to rest on the sheet metal plate 10 at the top 11 of the sheet metal plate 10 and has a length 31 in the RI direction and a width 32 in the R2 direction (see also Figure 2). Furthermore, the hold-down structure 30 is configured to flexibly adapt to the deformation of the sheet metal plate 10 in the release direction during the support state LI for separating the at least one workpiece 110 and to rest substantially on the deformed sheet metal plate 10, preferably substantially uniformly, in order to substantially block movement of the workpiece 110, preferably during the separation process, from and / or away from the sheet metal plate 10 towards the top 11 through the hold-down structure 30.

[0047] The hold-down structure 30 can be designed as a flexibly adaptable structure along the first extension direction RI and / or along the second extension direction R2 and / or along a support direction AR for support on the sheet metal plate 10, being at least partially dimensionally stable and / or at least partially dimensionally variable, preferably essentially reversibly deformable. This can be achieved differently through design parameters, geometric parameters and / or material parameters.

[0048] In the first embodiment, the hold-down structure 30 is formed in multiple parts and comprises the hold-down part 310, the hold-down part 320, and the hold-down part 330. Each of the hold-down parts 310, 320, 330 is essentially plate-shaped. The hold-down structure 30 is partially sandwich-shaped, as the hold-down parts 310 and 320 rest on and / or abut the hold-down part 330, which serves as the supporting element of the hold-down structure 30.

[0049] The hold-down element 310 is supported on one side by the hold-down structure rim 311 on the bearing unit 41, i.e., it is attached, preferably clamped or screwed in place. The hold-down element 320 is supported on one side by the hold-down structure rim 321 on the bearing unit 42, i.e., it is attached, preferably clamped or screwed in place.

[0050] Between the hold-down elements 310 and 320 and the sheet metal plate 10 is the hold-down element 330, which is supported on one side by the hold-down structure edge 331 on the bearing unit 42, i.e., attached, preferably clamped or screwed in place. The hold-down elements 310 and 320 are designed and arranged relative to each other such that a gap 34 is formed in the direction R2. The gap 34 can be, for example, between approximately 2 mm and approximately 10 mm wide. The gap 34 serves, among other things, to prevent a collision between the hold-down elements 310 and 320 in every state of the hold-down structure 30, preferably at least during the separation process of the at least one workpiece 110.Furthermore, different vibration behavior can be achieved through the respective bearing conditions of the hold-down parts 310 and 320 and depending on their geometric parameters (for example, encompassing a width), which leads to continuous contact of the hold-down part 300 and thus to a flexible adaptation of the hold-down part 330.

[0051] The hold-down elements 310, 320, 330 can be designed differently or at least partially essentially identically with respect to at least one structural parameter. For example, the hold-down element 310 can be designed differently from at least one of the hold-down elements 320 and 330, or vice versa, with respect to at least one of the following structural parameters: a density; a stiffness; a position; a shape, preferably comprising a thickness; a mass.

[0052] The combined mass of hold-down part 310 and hold-down part 320 can be greater than the mass of hold-down part 330. Depending on this and on the respective support condition, the hold-down parts 310, 320 and 330 exhibit different static and / or dynamic behavior.

[0053] By flexibly adapting the hold-down structure 30 to the deformation of the sheet metal plate 10 that occurs in the storage state LI, the hold-down structure 30 can essentially block the movement of the workpiece 110 from the sheet metal plate 10 towards the top during the separation process.

[0054] Due to a blockage of upward jumping or flinging by the hold-down structure 30, the workpiece 110 cannot rest and remain on the residual grid of the sheet metal plate 10, and thus cannot be unnecessarily sent to the scrap pile.

[0055] The hold-down structure 30 according to the first embodiment represents a defined oscillatory multibody system which can flexibly adapt to the deformation, i.e. to the sag 13, in order to substantially block any movement of the workpiece 110 in a defined direction when a mechanical load is introduced during the separation process of the workpiece 110.

[0056] Figure 2 shows the hold-down structure 30 from Figure 1 in a front view (main view).

[0057] In the front view, the covering of the hold-down element 330 by the hold-down elements 310 and 320, forming the gap 34 in the direction R2, is clearly visible. The hold-down elements 310, 320, 330 are configured and / or designed as essentially plate-shaped parts of the hold-down structure 30 in relation to each other.

[0058] The length 31 in the direction RI and the width 32 of the hold-down part 330 each correspond approximately to the length and width 32 of the sheet metal plate 10.

[0059] The blanking element 330 is designed to complement the sheet metal plate 10 and, in this view, essentially covers the entire sheet metal plate 10. As already described, the sheet metal plate 10 can have a thickness between approximately 1 mm and approximately 30 mm. The thickness of the blanking element 330 can be at least substantially equal to or less than the thickness of the sheet metal plate 10. For example, the blanking element 330 can have a thickness of approximately 2 mm, and the blanking elements 310 and 320 each have a thickness of approximately 5 mm. Furthermore, the blanking elements 310 and 320 can be characterized by different extensions in the direction R2 and thus by different widths. With a width of approximately 1500 mm for the sheet metal plate 10, the blanking element 310 can have a width of approximately 650 mm and the blanking element 320 a width of approximately 848 mm, or vice versa.This allows the sheet metal plate 10 to be acted upon by means of the hold-down parts 310 and 320 via the hold-down part 330 arranged between them.

[0060] Figure 3 shows further embodiments of the hold-down structure 30 according to the present invention in a front view (main view).

[0061] The hold-down structure 30 and its functionality can be implemented in different ways. To flexibly adapt the hold-down structure 30 to the deformation of the sheet metal plate 10 in the storage condition LI, it can have at least one of the following configurations, at least in sections: essentially plate-shaped, mat-shaped, net-shaped, sieve-shaped, grid-shaped, slotted.

[0062] It is possible that the hold-down structure 30 is connected section by section by several interconnected links in order to achieve the flexible adaptability of the hold-down structure 30. In order to be able to represent the respective deformation 13 of the sheet plate 10 by the hold-down structure 30, among other things, the hold-down structure 30 includes at least one hold-down edge 33 for support, i.e., one-sided attachment to a support device 41, 42.

[0063] Figure 4 shows a flowchart of a first embodiment of the method according to the present invention. The method for separating the workpiece 110 from the sheet metal plate 10 can, for example, be carried out using the arrangement 1 from Figure 1. The following describes process steps, i.e., sections and / or phases of the method, with reference only partially made to devices, units, and / or elements of the arrangement 1 and / or to properties of the hold-down structure 30 in order to avoid repetition. The method begins with process step S1. In process step S1, the semi-finished product edges 14, 15 of the sheet metal plate 10 are fastened, preferably by clamping or screwing, to their respective associated support units 41 and 42 in order to create the support state LI of the sheet metal plate 10 for separating the workpiece 110 essentially in the release direction FR.

[0064] In process step S2, the hold-down structure 30 is placed, as disclosed herein, essentially in the bearing direction AR onto the sheet metal plate 10 on the upper side 11 of the sheet metal plate 10, in order to cover the sheet metal plate 10, preferably the workpiece 110, by the hold-down structure 30 and / or to act upon it by the hold-down structure 30, wherein the hold-down structure 30 in the bearing state LI flexibly adapts to a respective deformation, preferably to the sag 13, of the sheet metal plate 10 and essentially rests on the deformed sheet metal plate 10, preferably essentially uniformly.

[0065] In process step S3, a mechanical load is generated by the excitation structure 20, wherein the mechanical load is configured to separate at least one workpiece 110 from the sheet metal plate 10. The mechanical load can, for example, include at least one shock or at least one vibration, or a combination thereof.

[0066] In process step S4, the (generated) mechanical load is introduced into the sheet metal plate 10 via the hold-down structure 30 and the workpiece 110 is separated from the sheet metal plate 10, whereby the hold-down structure 30, which always rests on the sheet metal plate 10, essentially blocks the movement of at least one workpiece 110 towards the top 11, at least during the introduction of the mechanical load.

[0067] The workpiece 110, separated by the introduction of the mechanical load, therefore cannot jump or be accelerated towards the top 11 and falls properly in the opposite direction downwards.

[0068] It is possible that, at least during the application of the mechanical load and / or partially after the application of the mechanical load, the hold-down structure 30 or components of the hold-down structure 30 and the sheet metal plate 10 each vibrate at a different frequency and / or each in a different frequency range, thereby continuously ensuring flexible adjustment and contact of the hold-down structure 30 on the sheet metal plate 10 at its upper surface 11 and thus blocking of the workpiece 110.

[0069] The present invention is not limited to the embodiments described above. Rather, a multitude of variants and modifications are possible, which also make use of the inventive concept and therefore fall within the scope of protection. Preferably, the present invention also claims protection for the subject matter and features of the dependent claims independently of the referenced claims. List of reference numerals

[0070] 1. Arrangement

[0071] 10 semi-finished products

[0072] 11 Top

[0073] 12 Subpage

[0074] 13 Sag

[0075] 14 Semi-finished product edge

[0076] 15 Semi-finished product edge

[0077] 20 Pathogen structure

[0078] 21 Pathogen structure edge 22 Pathogen structure edge 23 Pathogen unit

[0079] 24 pathogen unit

[0080] 30 Hold-down structure 31 Length

[0081] 32 width

[0082] 33 Retaining structure edge 34 Gap

[0083] 40 Storage device 41 Storage unit

[0084] 42 storage units

[0085] 110 workpieces

[0086] 310 Hold-down part

[0087] 311 Hold-down structure edge 320 Hold-down part

[0088] 321 Hold-down structure edge 330 Hold-down part

[0089] 331 Hold-down structure edge

[0090] AR support direction

[0091] g acceleration due to gravity

[0092] LI Storage condition

[0093] RI direction R2 direction

[0094] * * * *

Claims

REQUIREMENTS 1. Holding structure (30) for support on a semi-finished product (10) on a top surface (11) of the semi-finished product (10), wherein the semi-finished product (10) is in a machined state flat, planar, plate-shaped and / or sheet-shaped and comprises at least one workpiece (110) for separation from the semi-finished product (10), wherein the hold-down structure (30) is configured to flexibly adapt to a respective deformation, preferably a respective sag (13), of the semi-finished product (10) in a storage state (LI) for the separation of the at least one workpiece (110) in a release direction (FR) and to rest on the deformed semi-finished product (10), preferably to rest uniformly, to block movement of at least one workpiece (110), preferably during the separation process, from the semi-finished product (10) towards the top (11) through the hold-down structure (30).

2. Hold-down structure (30) according to claim 1 wherein the hold-down structure (30) is designed to be dimensionally stable at least in sections and / or dimensionally variable, preferably reversibly deformable, along a first extension direction (RI) and / or along a second extension direction (R2) and / or along a bearing direction (AR) for bearing on the semi-finished product (10). wherein preferably the first extension direction (RI) and the second extension direction (R2) are each oriented perpendicular to the support direction (AR).

3. Hold-down structure (30) according to claim 1 or 2, wherein the hold-down structure (30) is formed at least section by a linear elastic material and / or at least section by a non-linear elastic material, which has a defined density and / or a defined stiffness in order to flexibly adapt the hold-down structure (30) to the respective deformation of the semi-finished product (10).

4. Holding structure (30) according to one of the preceding claims, wherein the holding structure (30) has at least sectionally at least one of the following configurations: plate-shaped, mat-shaped, net-shaped, sieve-shaped, grid-shaped, slotted.

5. Hold-down structure (30) according to any one of the preceding claims, wherein the hold-down structure (30) is formed in multiple parts and comprises at least a first hold-down part (310) and at least a second hold-down part (320), wherein the at least one first hold-down part (310) and the at least one second hold-down part (320) are designed differently with respect to at least one of the following structural parameters: a density; a stiffness; a position; a shape, preferably comprising a thickness; wherein preferably the at least one first hold-down part (310) and the at least one second hold-down part (320) are each designed in a plate-like and reversibly deformable manner.

6. Hold-down structure (30) according to one of the preceding claims, wherein the hold-down structure (30) is sandwich-shaped and comprises at least two hold-down parts (310, 320, 330) which are arranged at least partially superimposed, preferably along a support direction (AR) for support onto the semi-finished product (10), wherein preferably the at least two retaining parts (310, 320, 330) are designed differently with respect to at least one of the following structural parameters: a density; a stiffness; a shape, preferably comprising a thickness.

7. Hold-down structure (30) according to claim 6, wherein the hold-down structure (30) comprises three hold-down parts (310, 320, 330), each of which is plate-shaped, wherein a first hold-down part (310) and a second hold-down part (320) are spaced apart from each other by forming a gap (34) and / or opposite each other on a third hold-down part (330), wherein the third hold-down part (330) is configured to rest on the semi-finished product (10), wherein preferably the respective mass of the first hold-down part (310) and the second hold-down part (320) together is greater than the mass of the third hold-down part (330).

8. Method for separating at least one workpiece (110) from a semi-finished product (10), wherein the semi-finished product (10) is formed in a machined state as flat, planar, plate-shaped and / or sheet-shaped, wherein preferably the at least one workpiece (110) is produced by a cutting operation, comprising: • Fastening, preferably clamping, defined semi-finished product edges (14, 15), preferably opposing semi-finished product edges (14, 15), of the semi-finished product (10) to a storage device (40; 41, 42), to create a storage state (LI) of the semi-finished product (10) for the separation of at least one workpiece (110) in a release direction (FR); • Placing a hold-down structure (30) configured according to one of the preceding claims in a bearing direction (AR) onto the semi-finished product (10) on a top surface (11) of the semi-finished product (10), to cover the semi-finished product (10), preferably the at least one workpiece (110), by means of the hold-down structure (30) and / or to act upon it by means of the hold-down structure (30), wherein the hold-down structure (30) in the storage state (LI) flexibly adapts to a respective deformation, preferably to a respective sag (13), of the semi-finished product (10) and rests on the deformed semi-finished product (10), preferably resting uniformly; • Generating a mechanical load by means of an excitation structure (20), wherein the mechanical load is configured to separate the at least one workpiece (110) from the semi-finished product (10); • Introducing the mechanical load into the semi-finished product (10) via the hold-down structure (30) and separating the at least one workpiece (110) from the semi-finished product (10), wherein the hold-down structure (30) blocks the movement of the at least one workpiece (110) towards the top (11) at least during the introduction of the mechanical load.

9. Method according to claim 8, wherein the hold-down structure (30) and the semi-finished product (30) oscillate at least during the application of the mechanical load and / or partially after the application of the mechanical load, each at a different frequency and / or in a different frequency range.

10. Method according to claim 8 or 9, comprehensive: • Applying a defined pressure load to the semi-finished product (10) on the top surface (11) of the semi-finished product (10) by the hold-down structure (30) depending on the mechanical load and / or the configuration of the semi-finished product (10), so that a uniform bearing of the hold-down structure (30) on the semi-finished product (10) is ensured at least during the introduction of the mechanical load and / or during the separation of the at least one workpiece (110) from the semi-finished product (10).

11. Method according to any one of the preceding claims 8 to 10, comprehensive: • Arranging the pathogen structure (20) on the containment structure (30); • Attaching, preferably clamping, at least one defined structural edge section (33, 311, 321, 331) of the hold-down structure (30) to the excitation structure (20) or to the storage device (40; 41, 42), to ensure flexible adaptability of the hold-down structure (30) to the respective deformation, preferably to the respective sag (13), of the semi-finished product (10).

12. Arrangement (1), comprising: • a hold-down structure (30) for placing on a semi-finished product (10) on a top surface (11) of the semi-finished product (10), wherein the semi-finished product (10) is in a machined state flat, planar, plate-shaped and / or sheet-shaped and comprises at least one workpiece (110) for separating it from the semi-finished product (10), wherein the hold-down structure (30) is configured according to any one of the preceding claims 1 to 7; • a storage device (40; 41, 42) for generating a storage state (LI) in the semi-finished product (10) for separating the at least one workpiece (110) in a release direction (FR); • an excitation structure (20) for generating and / or transmitting a mechanical load for separating the at least one workpiece (110) from the semi-finished product (10), wherein the arrangement is preferably configured to carry out a method according to one of the preceding claims 8 to 11. * * * *

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