Negative-pressure element for a (negative-pressure) work surface
Patent Information
- Application Number
- EP2023794393
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-10-26
- Filing Date
- 2023-10-25
- Publication Date
- 2025-09-03
AI Technical Summary
Vacuum work surfaces without lighting struggle to effectively detect the edges of objects placed on them, leading to challenges in precise positioning and processing.
A vacuum element with a diffuser layer and a translucent layer, integrated with a light source and a reflection surface, which provides selective illumination and maintains negative pressure, enabling high-contrast edge detection by distributing light evenly across the surface.
The solution allows for precise edge detection and improved positioning of objects on vacuum work surfaces, enhancing the accuracy of further processing operations by providing uniform illumination and maintaining negative pressure fixation.
Smart Images
Figure 1.1
Abstract
Description
[0001] VACUUM ELEMENT FOR A (VACUUM) WORK SURFACE
[0002] The present invention relates to a vacuum element for a (vacuum) work surface, a vacuum work surface having at least one vacuum element, and a method for detecting the position of an object on a vacuum work surface.
[0003] Vacuum tables without lighting are known in the art. These are typically used to fix objects or workpieces in position on a surface using a vacuum or negative pressure, usually for further processing.
[0004] It may be an object of the invention to further improve vacuum work surfaces, in particular to enable and / or improve edge detection of objects placed on the vacuum work surface.
[0005] This object is achieved according to the teaching of the independent claims. Various embodiments and further developments of the invention are the subject of the dependent claims.
[0006] In some embodiments of the invention, a vacuum element is provided for a work surface and / or vacuum work surface, in particular for a work surface of a work surface assembly or for a vacuum work surface of a vacuum work surface assembly, in particular in order to partially and / or selectively illuminate the work surface and / or the vacuum work surface. In some embodiments, the vacuum element has at least one connection designed to connect a vacuum and / or a vacuum device. In some embodiments, the vacuum element has a diffuser layer, wherein the diffuser layer has a perforation at least in sections. In some embodiments, the vacuum element has a light-transmissive layer. In some embodiments, the light-transmissive layer has a perforation at least in sections.In some embodiments, the light-transmissive layer is designed to couple light into the diffuser layer of the vacuum element. In some embodiments, the light-transmissive layer can be a light-conducting layer, in particular a layer that guides light in the direction of the diffuser layer of the vacuum element. In some embodiments, the perforation of the diffuser layer, alternatively the perforation of the diffuser layer and the perforation of the light-transmissive layer, is designed such that, in particular when a vacuum is applied to the vacuum element, in particular to at least one connection of the vacuum element, air can flow through the respective perforation in the direction of the vacuum or vacuum device. In some embodiments, the vacuum element has at least one light source, in particular at least one light source that is configured to emit light in the direction of the light-transmissive layer.In some embodiments, the at least one light source is a light-emitting diode (LED). In some embodiments, the vacuum element has at least one volume configured to "distribute" the vacuum applied to the at least one connection or a negative pressure applied to the at least one connection to the perforation, in particular to at least a portion of the perforation. In some embodiments, the at least one volume is configured to distribute an applied vacuum to at least a portion of the perforation of the diffuser layer, alternatively to at least a portion of the perforation of the diffuser layer and at least a portion of the perforation of the light-transmissive layer.In other words, in some embodiments, the at least one volume is configured such that the perforation of the diffuser layer and / or the perforation of the light-permeable layer is in fluid communication with the at least one connection via the volume. In some embodiments, the vacuum element is configured such that it can be arranged or is arrangeable on a perforated vacuum working surface, in particular with a surface of the diffuser layer which further can have or has a perforation complementary to a perforation of the vacuum working surface. In some embodiments, the vacuum element is designed such that it can be arranged on a working surface which has a perforation complementary to the vacuum, in particular (only) in the region in which the vacuum element is to be arranged or is arrangeable. In some embodiments, the vacuum element is configured ordesigned such that it can be integrated into a recess in a work surface, in particular a work surface without its own vacuum connection. In some embodiments, the vacuum element is configured such that it can be integrated into a recess in a vacuum work surface. For this purpose, in a further development, the vacuum element can have a frame which has at least one connection, a diffuser layer, a light-permeable layer, at least one reflective surface or reflective layer, at least one light source and at least one volume, in particular as described above. The term “diffuser layer”, as used herein, is to be understood in particular as a (light) diffuser which is designed to distribute the light incident (onto it) at least substantially evenly.
[0007] The term "connection" as used herein is to be understood in particular as a fluid connection detached from a specific form, which is particularly designed to enable a (technical) vacuum or a negative pressure (in particular in comparison to an ambient pressure and / or atmospheric pressure under normal conditions) and / or a fluid flow in the direction of the vacuum or the negative pressure, in particular to a vacuum or negative pressure prevailing around the negative pressure element or to a negative pressure device.In some embodiments, the term "connection" as used herein may refer to a proprietary interface or a commercially available interface, in particular an interface that establishes and / or enables a fluid connection by means of connectors, in particular (complementary) plug-in connectors, in particular to a vacuum device, which can be connected in particular via a fluid connection, such as a hose. In some embodiments, a vacuum device may be a vacuum pump.
[0008] In some embodiments, this advantageously makes it possible for a vacuum element to represent or be its own, in particular separate, lighting unit with (at least partial) vacuum capacity for vacuum-fixing objects. In some embodiments, the vacuum element can advantageously be used flexibly in pick-and-place operations and / or roll-to-roll applications, in particular for high-contrast edge detection of objects using corresponding edge detection systems and methods. In some embodiments, these can advantageously detect edges more reliably using the illumination contrast advantageously provided by the vacuum element. In some embodiments, the vacuum element can advantageously provide a more uniform illuminance across its diffuser layer oron a surface set up for edge detection, so that in particular detection of an edge of an object on the vacuum element and / or the set up surface can be simplified.
[0009] In some embodiments, the vacuum element is designed such that it illuminates or can illuminate a work surface, in particular a work surface without a vacuum connection or access to a vacuum device, in sections or only a section of the work surface and / or selectively. In other words, in some embodiments the vacuum element is designed such that it does not illuminate a work surface in its entirety, at least substantially. In some embodiments the vacuum element is arranged in a recess of the work surface, in particular configured to be arranged in a corresponding recess. In some embodiments the vacuum element is configured to be arranged on a work surface. For this purpose the work surface in some embodiments has a perforation which is at least substantially provided with one or morecorresponds to the perforation of the vacuum element, in particular is complementary to it.
[0010] In some embodiments, the vacuum element is configured such that it illuminates or can illuminate a vacuum work surface in sections or only a section of the vacuum work surface and / or selectively. In other words, in some embodiments, the vacuum element is configured such that it does not illuminate a vacuum work surface in its entirety, at least substantially.
[0011] In some embodiments, the at least one light source is arranged such that it radiates laterally into the translucent layer. In some embodiments, the light source is arranged on a side of the vacuum element that is at least substantially perpendicular to the surface of the diffuser layer and / or at least substantially perpendicular to the surface of the translucent layer.
[0012] In some embodiments, this advantageously allows the vacuum element to be designed to be more space-saving.
[0013] In some embodiments, the vacuum element has at least one reflective surface or reflective layer configured to reflect the light emitted by the at least one light source toward the light-transmissive layer and / or the diffuser layer. In some embodiments, the at least one reflective surface or reflective layer is configured to reflect light emerging from the light-transmissive layer, at least substantially, toward the light-transmissive layer (130) and / or the diffuser layer (120).
[0014] In some embodiments, the at least one volume is arranged between the at least one reflective surface and the light-transmissive layer, in particular such that a "layer sequence" of the negative pressure element at the location of the volume is: a reflective surface, the volume, a light-transmissive layer and a diffuser layer.
[0015] In some embodiments, the at least one volume borders the reflective surface, such that the vacuum element then has a "layer sequence" in which the volume is arranged on the reflective surface, which in turn is arranged on the translucent layer, which in turn is arranged adjacent to the diffuser layer. In other words, the "layer sequence" is from bottom to top: volume, reflective layer, translucent layer, diffuser layer. For this purpose, the reflective layer has a perforation at least in sections, in particular such that a fluid, in particular air, can flow through the (respective) perforation to the vacuum or vacuum device.
[0016] In some embodiments, the at least one volume is arranged between the diffuser layer and the translucent layer. Accordingly, in these embodiments, a "layer sequence" is: reflective surface, translucent layer, volume, diffuser layer.
[0017] In some embodiments, the at least one volume is at least partially integrated into at least one of the layers mentioned herein, in particular into at least one of the diffuser layer, the translucent layer and the reflective surface or reflective layer, in particular such that air can flow or flows through the perforation of the diffuser layer and / or the translucent layer, or of the diffuser layer, the translucent layer and the reflective layer, towards the vacuum or vacuum device, in particular the layers have a perforation for this purpose, at least in sections.
[0018] By means of an arrangement of the at least one volume as described herein, in some embodiments a perforation of the diffuser layer can advantageously be or be fluidically connected in sections to the at least one connection, in particular via the perforation of the light-transmissive layer and / or via the perforation of the reflective surface if it is an embodiment with at least partially perforated reflective surface (as described herein).
[0019] In some embodiments, the light-transmissive layer has support structures, in particular support structures that are configured to support the at least one volume. According to some embodiments, the support structures can support the at least one volume against a diffuser layer and / or against a reflective surface or reflective layer, in particular depending on the arrangement of the at least one volume. Alternatively or additionally, in some embodiments, the diffuser layer and / or the reflective surface or layer can form support structures that support the cavity introduced into the vacuum element by the at least one volume. In some embodiments, the support structures are configured such that a fluid flow through the at least one volume is at least substantially not impeded or reduced.
[0020] This advantageously makes it possible to reduce, in particular prevent, deflection of at least one layer of the vacuum element, particularly under applied negative pressure or external loading, for example, by a weight. Furthermore, in some embodiments, this advantageously increases and / or improves the rigidity of the vacuum element. Furthermore, in some embodiments, this advantageously allows the at least one volume to be integrated into one or more of the layers of the vacuum element, thus (further) reducing the structural volume of the vacuum element.
[0021] In some embodiments, the perforation of the diffuser layer is offset from the perforation of the translucent layer. In some embodiments, the perforation of the reflective surface (if present) is offset from the perforation of the translucent layer.
[0022] This can advantageously improve the uniformity of the illuminance of the vacuum element in some embodiments.
[0023] In some embodiments, the vacuum element is configured such that an illuminance uniformity of at least 90% is achieved on an outward-facing surface of the diffuser layer. An illuminance uniformity of at least 90% may, in some embodiments, refer to an illuminance uniformity measured according to at least one of the following standards, in particular according to a standard of the ISO (International Organization for Standardization), VESA (Video Electronics Standard Association), SPWG (Standards Panel Working Group), or the like.
[0024] In some embodiments, the light-transmitting layer, in particular the perforation of the light-transmitting layer, is designed, in particular arranged, in such a way that a uniformity of the illuminance of at least 90% is achieved on a surface of the diffuser layer which is arranged opposite the layer adjacent to the light-transmitting layer or which is arranged opposite the surface which is adjacent to the light-transmitting layer.
[0025] Advantageously, in some embodiments, this can improve an application of the vacuum element, in particular an edge detection of an object using a vacuum element described herein.
[0026] In some embodiments, the vacuum element has at least one electrical terminal configured to electrically contact the at least one light source. In some embodiments, the electrical terminal has a contact element configured to electrically contact a complementary contact element of a vacuum work surface or a work surface.
[0027] Advantageously, in some embodiments, the electrical connection can be arranged such that the vacuum element can be electrically connected more easily, in particular by means of the contact element. In some embodiments, the vacuum element, in particular the electrical connection, can comprise at least one permanent magnet, in particular to enable the vacuum element, in particular the electrical connection of the vacuum element, to be placed more easily in, on, or on a receptacle provided for the vacuum element, in particular a receptacle of a work surface or a vacuum work surface.In some embodiments, the electrical connection with the at least one permanent magnet can be configured to place the electrical connection in, on or on a receptacle in such a way that the electrical connection is (electrically) contacted, in particular in such a way that the at least one light source is or can be supplied with power.
[0028] In some embodiments of the invention, a vacuum working surface is provided which has at least one vacuum element as described herein. In some embodiments, the working surface of the vacuum working surface and the surface of the diffuser layer of the vacuum element (facing away from the vacuum element) form a common, in particular flat, surface. Alternatively, in some embodiments, the at least one vacuum element is arranged with its diffuser layer on the vacuum working surface and the perforation of the diffuser layer corresponds to a perforation of the vacuum working surface, in particular such that when a vacuum is applied to the vacuum working surface and / or the vacuum element, air flows or can flow through the perforation of the vacuum working surface and through the perforation of the diffuser layer towards the vacuum, in particular the vacuum device.
[0029] In some embodiments, the vacuum work surface is part of a vacuum work surface assembly or, in some embodiments, a vacuum work surface assembly has at least one vacuum work surface. The term “vacuum work surface assembly,” as used herein, is to be understood in particular to mean that the vacuum work surface assembly is configured to create a vacuum on the vacuum work surface, in particular to form at least one space with the vacuum work surface that can create a vacuum. In some embodiments, the vacuum work surface is loosely or removably installed in the vacuum work surface assembly and, in particular, has a seal, so that the vacuum work surface assembly with the installed vacuum work surface can create a vacuum that acts or can act on an object, in particular via the perforation of the vacuum work surface.
[0030] In some embodiments, the vacuum work surface assembly is designed such that the distance between a base of the vacuum work surface assembly and the vacuum work surface corresponds, at least substantially, to the height of a vacuum element, so that the vacuum element can be or is received in the space between the vacuum work surface and the base of the vacuum work surface assembly. In some embodiments, the base of the vacuum work surface assembly has at least one contact element that is complementary to a contact element of the electrical connection of the vacuum element. Advantageously, in some embodiments, this can make it possible for the vacuum element to be or is more easily electrically contacted in the vacuum work surface assembly.In some embodiments, a vacuum work surface assembly may be integrated into a vacuum table. Alternatively, in some embodiments, the vacuum work surface assembly may be used in a roll-to-roll application or production.
[0031] As a result, in some embodiments, an object or workpiece, in particular a semi-finished product, can advantageously be pulled across the work surface and / or placed thereon. The vacuum work surface can, in some embodiments, be used for edge detection of the objects or workpieces, in particular semi-finished products, placed on the vacuum work surface and can, in particular, enable edge detection to be improved by illuminating the edges of the object or workpiece by the at least one vacuum element, in particular by the increased contrast provided by the vacuum element.
[0032] In some embodiments, the vacuum working surface and / or the vacuum element comprises at least one seal configured to seal the working surface around the vacuum element, in particular such that, through the integration of the at least one vacuum element, a negative pressure applied to the vacuum working surface or a (technical) vacuum applied to the vacuum working surface can be kept or remains constant, at least substantially.
[0033] In some embodiments, the vacuum work surface can have an area of at least 250mm by at least 100mm, in particular at least 350mm by at least 100mm. In some embodiments, the at least one vacuum element, which is in particular integrated into or attached to the vacuum work surface, can have an area of at least 40mm by 40mm. In some embodiments, the vacuum work surface can have at least five times the area of the at least one vacuum element.
[0034] In some embodiments of the invention, a vacuum table is provided that has at least one vacuum work surface or one vacuum work surface assembly. In some embodiments, the at least one vacuum work surface of the vacuum table may correspond to the entire (working) surface of the vacuum table, in particular at least 90% of the surface, at least 75% of the surface, at least 50% of the surface, and / or at most 50% of the surface. In some embodiments, the vacuum table may have two or more vacuum work surfaces or vacuum work surface assemblies.
[0035] In some embodiments of the invention, a method for detecting the position of an object on a vacuum work surface described herein or on a work surface described herein is provided. In some embodiments, the method comprises placing the object on a vacuum work surface or on a work surface, in particular a vacuum work surface described herein or a work surface described herein, wherein the vacuum work surface or the work surface has at least one vacuum element described herein, in particular such that at least one edge of the object is located on a vacuum element of the vacuum work surface or on a vacuum element of the work surface. In some embodiments, the method comprises determining at least one edge position of the placed object on the at least one vacuum element.In some embodiments, the method further comprises determining a position of the object on the vacuum work surface or determining a position of the object on the work surface, in particular determining a position of the object on the vacuum work surface or the work surface. In some embodiments, determining the position of the object, in particular determining the position of the object on the vacuum work surface or the work surface, is based on the at least one determined corner position of the object and known dimensions of the object.
[0036] Advantageously, in some embodiments, a location and / or position of the object on the vacuum work surface or on the work surface can be determined more precisely, in particular based on a contrast at the edge of the object improved by the vacuum element. In some embodiments, a position of the object located on the vacuum work surface or on the work surface can be determined to within 100 μm or better. In some embodiments, further processing of the object can be performed more precisely, in particular with greater positional accuracy.
[0037] The terms "comprises," "includes," "includes," "has," "has," "with," or any other variation thereof, as used herein, are intended to cover non-exclusive inclusion. For example, a method or apparatus that includes or has a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or that are inherent in such a method or apparatus.
[0038] Furthermore, unless expressly stated to the contrary, "or" refers to an inclusive "or" and not an exclusive "or." For example, a condition A or B is satisfied by one of the following conditions: A is true (or present) and B is false (or absent), A is false (or absent) and B is true (or present), and both A and B are true (or present). The terms "a" or "an" as used herein are defined to mean "one or more." The terms "another" and "a further," and any other variations thereof, are to be construed to mean "at least one further."
[0039] The term “configured” or “set up” to fulfil a specific function (and respective variations thereof), as used here where appropriate, is to be understood that a relevant device or component thereof is already in a design or setting in which it can perform the function or is at least adjustable – i.e. configurable – so that it can perform the function after being set accordingly. The configuration can be carried out, for example, by appropriately setting parameters of a process sequence or of switches or the like for activating or deactivating functionalities or settings. In particular, the device can have a plurality of predetermined configurations or operating modes, so that configuration can be carried out by selecting one of these configurations or operating modes.
[0040] Exemplary embodiments described herein, in particular their respective features, can be combined with one another as desired, in particular to form new embodiments, unless this is expressly excluded or technically impossible. In particular, exemplary embodiments of the vacuum work surface described herein, in particular their features, where this is not technically impossible or excluded, can be transferred to the work surface that is not configured for vacuum, or can be combined (as desired) with one another, in particular to form new embodiments of the work surface. This applies analogously to embodiments of a corresponding work surface assembly or a vacuum table that has at least one work surface.
[0041] The method described herein is preferably designed for implementation using the vacuum work surface according to the invention or the work surface according to the invention, in particular an embodiment thereof described herein. The vacuum work surface or the work surface is preferably designed for implementation of the method described herein, in particular an embodiment thereof described herein. Further advantages, features, and possible applications of the present invention will become apparent from the following detailed description in conjunction with the figures.
[0042] This shows
[0043] Figure 1 shows schematically a vacuum element in a side view in section according to one embodiment;
[0044] Figure 2 shows schematically a vacuum element in a side view in section according to an alternative embodiment;
[0045] Figure 3 shows schematically a vacuum element in a side view in section according to a further alternative embodiment;
[0046] Figure 4 shows schematically a vacuum element in a side view in section according to a further alternative embodiment;
[0047] Figure 5 schematically shows a vacuum working surface with three vacuum elements according to one embodiment;
[0048] Figure 6 shows schematically a section through a vacuum working surface in one embodiment; and
[0049] Figure 7 shows schematically a section through a vacuum working surface in an alternative embodiment.
[0050] In the figures, like reference numerals designate like, similar, or corresponding elements. Elements shown in the figures are not necessarily drawn to scale. Rather, the various elements shown in the figures are depicted in such a way that their function and general purpose are understandable to those skilled in the art. Connections and couplings between functional units and elements shown in the figures can, unless expressly stated otherwise, also be implemented as indirect connections or couplings. Functional units can, in particular, be implemented as hardware, software, or a combination of hardware and software. Figure 1 schematically shows an embodiment of a vacuum element 100 in a sectional view through the vacuum element 100.The vacuum element 100 has, from bottom to top, a reflection surface 140, a first volume 150, a light-transmitting layer 130, a second volume 150 and a diffuser layer 120, wherein the top corresponds to a surface of the diffuser layer 120, onto which, for example, an object or a workpiece can be placed or which can be attached to a vacuum work surface, as described later with reference to Figure 7. The reflective layer 140 reflects light from the light sources 110 toward the translucent layer 130. In some embodiments, a reflective layer 140 may also (i.e., additionally or alternatively) be arranged on the sides of the vacuum element 100, so that, in particular, light from the light source(s) 110 is reflected (back) into the vacuum element 100, and further, in particular, is reflected such that the light reaches the diffuser layer 120, for example, via the translucent layer 130.Figure 1 further shows a connection 160, which here is embodied, by way of example, as an opening in the vacuum element and connects the vacuum element 100 to a negative pressure that exists or can exist outside the vacuum element. This negative pressure is transmitted to the surface of the diffuser layer 120 via the perforation 170b of the translucent layer 130 and the perforation 170a of the diffuser layer 120, so that, for example, an object lying on this surface can be or will be fixed to the surface by the negative pressure. Air can flow accordingly from a normal pressure or a pressure higher than the negative pressure at the connection 160 through the perforation 170a, 170b and the volumes 150 towards the connection 160 and thereby generate, in particular, a negative pressure "holding force" on the surface of the diffuser layer 120.The volumes 150 are illustrated in the figure as extending across the entire width of the vacuum element. In some embodiments, the volume 150 or volumes 150 may extend only over a portion of the vacuum element, in particular over the portion having a perforation 170a, 170b.
[0051] Figure 2 shows a (different) embodiment of the vacuum element 100', which has identical or similar features to Figure 1, as can be seen from the reference numerals. Figure 2 differs from the embodiment shown in Figure 1 in that only one volume 150' is shown schematically. Accordingly, the diffuser layer 120' and the light-permeable layer 130' are arranged in contact with one another. The perforation 170'a, 170'b is designed such that an air flow in the direction of a negative pressure can be or is ensured. Furthermore, Figure 2 shows a connection 160', which enables or can enable the connection of a (technical) vacuum or negative pressure, in particular via a standardized interface or via a standardized connection.The light sources 110' are arranged, as in Figure 1, such that at the surface of the diffuser layer 120', which is at the top in the sheet direction, there is an at least substantially uniform illuminance over at least part or the entire surface of the diffuser layer 120'.
[0052] Figure 3 shows an embodiment of the vacuum element 100" with laterally arranged light sources 110", which emit light in the direction of the light-conducting layer 130". The light-conducting layer 130" is arranged between a reflection layer 140" and a diffuser layer 120". In some embodiments, further reflection layers and / or reflection surfaces can be arranged in the vacuum element, which in particular reflect light from the at least one light source or the light sources 110" in the direction of the diffuser layer 120". The embodiment shown in Figure 3 further has a perforation 170"c in the reflection layer 140". The volume 150" is arranged in a layer sequence below the reflection layer 140" and creates a fluid connection from the connection 160" to the perforation 170"a, so that a fluid, in particular air; through the perforation 170“a, 170'b, 170'c in the direction of suppression orVacuum can flow, especially towards the vacuum device.
[0053] Figure 4 schematically shows an embodiment of the vacuum element 100'", in which the translucent layer 130'" has support structures 180'". The support structures 180'" support the space spanned by the volume 150'", so that the vacuum element 100'" is particularly stable. Furthermore, it is shown schematically that the perforations 170"'b, 170"'a of the light-permeable layer 130'" and the diffuser layer 120'" are arranged offset from one another, such that air can flow or flows through the perforation 170"'a, 170"'b, in particular through the perforation 170"'a, 170"'b and the volumes 150'" in the direction of the negative pressure, i.e. leaves the negative pressure element 100'" at (at least one) connection 160'".
[0054] Figure 5 schematically shows a plan view of a vacuum work surface 200. In the embodiment shown, the vacuum work surface 200 has three vacuum elements 100, which are arranged such that the edge or edges of the object placed on the vacuum work surface 200 (shown in dashed lines) can be illuminated by the vacuum elements 100 on predetermined sides of the object or are illuminated when the object is placed on the vacuum work surface 200. The vacuum elements 100 show sections of the perforation 170a of the diffuser layer 120 in plan view, through which the object can be or is held down. Furthermore, the vacuum work surface 200 itself has a perforation 270, which can also hold down the object or does hold it down, in particular by fixing it to the vacuum work surface 200. Furthermore, Figure 5 shows a section line AA, which indicates the section plane for Figures 6 and 7 in dashed lines.The vacuum elements 100 are shown in different sizes and, in some embodiments, can be adapted to the edge shape of the object or have any other shape that includes features described herein. Likewise, in some embodiments, the vacuum work surface can have a different shape and / or surface than shown here, particularly depending on the object or workpiece.
[0055] Figure 6 schematically shows an embodiment of a vacuum work surface 200 in a side view of a section taken along the line AA indicated in Figure 5. Accordingly, Figure 6 shows two vacuum elements 100, which are integrated into the work surface of the vacuum work surface. For this purpose, the vacuum element 100 or the recess in the vacuum work surface 200, which is designed to receive the vacuum element 100, can have a seal in some embodiments. Furthermore, Figure 6 shows an exemplary object lying on the vacuum work surface in dashed lines, which is or is fixed to the surface by the negative pressure applied to the perforation 170a-b, 270. Another dashed line indicates a lower base of the vacuum work surface. This serves to illustrate a possible (low) overall height of the vacuum work surface.
[0056] Figure 7 shows an alternative embodiment of a vacuum working surface 200' in a side view as a sectional illustration along the section line AA indicated in Figure 5. In contrast to Figure 6, the vacuum element 100 in Figure 7 is not integrated into the vacuum working surface, in particular into a recess of the vacuum working surface 200', but is attached to the vacuum working surface 200'. The diffuser layer of the vacuum element 100 rests against the vacuum working surface 200', so that the light scattered by the diffuser layer shines through the working surface of the vacuum working surface 200'. The vacuum working surface 200' is made (in some embodiments) of a corresponding material that is suitable for this purpose.Figure 7 further shows electrical connections 290', which, if the vacuum work surface 200' and / or a vacuum work surface assembly has corresponding complementary connections, are configured to electrically connect the at least one light source 110 of the vacuum element 100. For this purpose, the vacuum work surface 200' can, in some embodiments, have corresponding connections, in particular in a base enclosing the vacuum work surface assembly (indicated by a dashed line in Figure 7). The perforation of the diffuser layer 120 and the perforation of the work surface 200 correspond in such a way that a vacuum can act or does act on the work surface, in particular when it is applied to one of the vacuum elements 100 and / or the vacuum work surface 200.
[0057] While at least one exemplary embodiment has been described above, it should be appreciated that a wide variety of variations exist. It should also be understood that the described exemplary embodiments are merely non-limiting examples and are not intended to limit the scope, applicability, or configuration of the devices and methods described herein. Rather, the foregoing description will provide one skilled in the art with guidance for implementing at least one exemplary embodiment, it being understood that various changes in the operation and arrangement of the elements described in an exemplary embodiment may be made without departing from the subject matter as defined in the appended claims, as well as their legal equivalents.
[0058] LIST OF REFERENCE SYMBOLS
[0059] 100, 100', 100", 100'" vacuum element
[0060] 110, 110', 110", 110". Light source
[0061] 120, 120', 120", 120'" diffuser layer
[0062] 130, 130', 130", 130'" translucent layer
[0063] 140, 140', 140", 140'" reflective surface or reflective layer
[0064] 150, 150', 150", 150'" volume
[0065] 160, 160', 160", 160'" connection
[0066] 170a-b, 170'ab, 170"ac, 170"'ac perforation
[0067] 180'“ support structures
[0068] 200, 200' vacuum work surface
[0069] 270' work surface perforation
[0070] 290' electrical connection
Claims
CLAIMS 1. A vacuum element (100) for arrangement in and / or on a work surface or in and / or on a vacuum work surface (200), wherein the vacuum element (100) comprises: at least one connection (160) designed to connect a vacuum and / or a vacuum device; a diffuser layer (120), wherein the diffuser layer (120) has a perforation (170a) at least in sections, wherein the perforation (170a) of the diffuser layer (120) is designed such that when a vacuum is applied to the vacuum element (100), air can flow through the respective perforation (170a) towards the vacuum device; a light-transmissive layer (130), in particular a light-conducting layer, wherein the light-transmissive layer (130) is designed to couple light into the diffuser layer (120); at least one light source (110), in particular at least one LED, which is configured to emit light in the direction of the light-transmitting layer (130);at least one volume (150) configured to distribute a negative pressure applied to the at least one connection (160) to the perforation (170a), in particular to at least a portion of the perforation (170a); and wherein the negative pressure element (100) is configured such that it can be arranged on a work surface having a perforation complementary to the negative pressure element (100) or a perforated negative pressure work surface (200), or such that the negative pressure element (100) can be integrated into a recess of a work surface or a negative pressure work surface (200).
2. Vacuum element (100) according to the preceding claim 1, characterized in that the light source (110) is arranged such that the light source (110) radiates laterally into the light-transmissive layer (130), wherein the light source (110) is arranged in particular on a side of the vacuum element (100) which is arranged, in particular at least substantially, perpendicular to the surface of the diffuser layer (120).
3. Vacuum element according to one of the preceding claims, characterized in that the vacuum element (100) has at least one reflection surface (140) which is designed to reflect the light emitted by the at least one light source (110) and / or the light emerging from the light-transmissive layer (130) in the direction of the light-transmissive layer (130) and / or the diffuser layer (120).
4. Vacuum element (100) according to one of the preceding claims, characterized in that the at least one volume (150) is arranged in sections between the at least one reflective surface (140) and the light-permeable layer (130), and wherein the light-permeable layer (130) has at least in sections a perforation (170b) which is designed such that when a negative pressure is applied to the vacuum element (100), air can flow in the direction of the vacuum device, or that the at least one volume (150) adjoins the reflective surface (140), wherein the reflective surface (140) has a perforation (170c) which is designed such that when a negative pressure is applied to the vacuum element (100), air can flow in the direction of the vacuum device.
5. Vacuum element (100) according to one of the preceding claims, characterized in that the diffuser layer (120), the light-transmitting layer (130) and / or the reflection surface has support structures (180"), in particular support structures (180"), which are designed to support the at least one volume (150).
6. Vacuum element (100) according to one of the preceding claims, characterized in that the perforation (170) of the diffuser layer (120) is arranged offset from the perforation (170) of the light-transmitting layer (130).
7. Vacuum element (100) according to the second alternative of the preceding claim 4 or according to one of claims 5 or 6, characterized in that the perforation (170) of the reflection surface (140) is arranged offset from the perforation (170) of the light-transmitting layer (130).
8. Vacuum element (100) according to one of the preceding claims, characterized in that on an outwardly directed surface of the diffuser layer (120), which forms an outer surface of the vacuum element, a uniformity of the illuminance of at least 90% is achieved and / or that the light-transmissive layer (130), in particular the perforation (170) of the light-transmissive layer (130), is designed, in particular arranged, in such a way that a uniformity of the illuminance of at least 90% is achieved on a surface of the diffuser layer (120) that is arranged opposite the surface of the diffuser layer (120) adjacent to the light-transmissive layer (130) or that is arranged opposite the surface that borders the light-transmissive layer (130). Vacuum element (100) according to one of the preceding claims, characterized in that the vacuum element (100) further comprises at least one electrical connection (290') that is configured to electrically contact the at least one light source (110), and wherein the electrical connection (290') comprises a contact element that is configured to electrically contact a complementary contact element of a vacuum working surface.Vacuum work surface (200) or work surface comprising at least one vacuum element (100) according to one of the preceding claims 1 to 9, wherein in particular the vacuum work surface (200) or the work surface and the surface of the diffuser layer (120) of the vacuum element (100) form a common, in particular planar, surface, or wherein the at least one vacuum element (100) is arranged with its diffuser layer (120) on the vacuum work surface (200) or the work surface and the perforation (170a) of the diffuser layer (120) corresponds to a perforation of the vacuum work surface (170d) or a perforation of the work surface. Method for detecting the position of an object on a vacuum work surface (200) or on a work surface, the method comprising: Placing the object on a vacuum work surface (200) or on a work surface according to the preceding claim 10; Determining at least one edge position of the placed object on the at least one illuminated vacuum element (100) of the vacuum work surface (200) or the work surface; and Determining a position of the object on the negative pressure working surface (200) or the working surface, in particular a position of the object based on the at least one determined edge position and known dimensions of the object.