Device for machining a workpiece
The device addresses the challenge of separating partially cut workpieces by using a control unit, support unit, and separating elements to minimize deformation and tilting, achieving efficient and precise processing.
Patent Information
- Application Number
- DE202024105838
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing devices struggle to separate a partially cut workpiece from the rest without causing undesirable deformation or tilting, particularly with materials that deform plastically.
A device with a control unit, support unit, and separating elements that allow for precise movement and separation of the workpiece, minimizing deformation by applying force at connection points and using fusion cutting to create a material gap.
The device effectively separates the workpiece while minimizing deformation and tilting, ensuring precise and efficient processing of plate-shaped materials.
Smart Images
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Abstract
Description
State of the art
[0001] Devices for holding and processing a workpiece, such as a laser-cut sheet metal or metal workpiece, are known. Different arrangements are used to separate or release the workpiece, which is held in the workpiece by individual connection points or partially cut free.
[0002] To date, for example, in the case of workpieces that undergo comparatively easy plastic deformation, it has not always been possible to satisfactorily separate a partially cut-out section of the workpiece from the rest of the workpiece, e.g. due to a canting of the cut-out section of the workpiece. Object and advantages of the invention
[0003] The object of the present invention is to enable the processing of a plate-shaped, partially cut-out workpiece in a practical manner, in particular to improve it with regard to undesired deformation or canting when cutting out the partial area of the workpiece.
[0004] This problem is solved by the independent claim. The dependent claims address advantageous and expedient developments of the invention.
[0005] The invention is based on a device for receiving and processing a plate-shaped workpiece which has a cut-out partial area which is connected to a remaining workpiece of the workpiece via at least one connection point, wherein the device is designed to separate the cut-out partial area from the remaining workpiece, wherein the device has a control unit for operating the device, wherein the device has a support unit for placing the workpiece with an underside of the workpiece on the support unit and a feed unit which can be controlled by the control unit for the driven movement of a workpiece along the support unit in a feed direction provided by the device, wherein the device has a separating element with which the cut-out partial area can be separated from the remaining workpiece in a separating process.
[0006] A cut-out partial area of the workpiece is, for example, a partial area of the workpiece which, apart from one or more connection points, is otherwise cut free from the rest of the workpiece, which is referred to as the remaining workpiece. For example, there is exactly one connection point, or exactly two connection points, or exactly three, or exactly four, or more than four connection points between the cut-out partial area and the remaining workpiece. For example, each connection point is designed as a comparatively narrow material bridge. For example, the width of the material bridge is in the tenth of a millimeter range. For example, the width of the material bridge is between 0.1 and 0.3 millimeters, e.g. between 0.1 and 0.5 millimeters, e.g. between 0.1 and 0.7 millimeters, e.g. between 0.1 and 0.9 millimeters.For example, each connection point forms a material bridge between the cut-out section and the remaining workpiece. Except for one or more connection points, the cut-out section and the remaining workpiece are otherwise separated by a previously cut-out material gap. The material gap can be, for example, a material-free gap or an air gap. The material gap is created using a cutting tool that creates the material gap by removing material from the workpiece. For example, the material gap is created or cut free, except for the connection points, using fusion cutting. Fusion cutting is a manufacturing process in metalworking. Here, metallic workpieces such as metal sheets are cut free using, for example, laser energy or thermal energy. Instead of mechanical energy, fusion cutting uses thermal energy to melt the material.
[0007] For example, the tool is designed as a laser fusion cutting tool or a plasma fusion cutting tool. The cutting of the sub-area is carried out, for example, using the laser fusion process or the plasma fusion process. For example, the tool is a laser cutting tool and / or a plasma welding cutting tool.
[0008] For example, the workpiece is metallic, e.g., a circuit board, a sheet metal workpiece, a metal plate such as sheet metal, aluminum, or steel. Before being picked up and processed by the device, the workpiece has been processed, for example, by a cutting and / or separating process, e.g., by a laser cutting or welding process.
[0009] For example, a plate-shaped workpiece has two opposing surfaces or main sides. The main sides are located at the top and bottom on opposite sides of the workpiece. The workpiece is, for example, a lasered sheet metal part, such as a circuit board. The cut-out section is connected to the remaining skeleton via connection points such as microjoints or microbridges. For example, the separating device can separate exactly one connection point, or two connection points, or more than two connection points one after the other.
[0010] For example, or preferably with a view to a speedy process, exactly two or exactly three or more than exactly three connection points, or all connection points, can be separated simultaneously. A connection point comprises, for example, a narrow material bridge of the workpiece, such as a microbridge or microjoint between the partial area and the remaining workpiece, such as a so-called residual skeleton. For example, the width of the connection point, for example the material bridge, is between 0.1 and one millimeter.
[0011] For example, the support unit, in the working state, forms a supporting base for the workpiece, enabling, for example, a linear horizontal movement of the workpiece. For example, the support unit comprises a roller conveyor, a ball track, a sliding conveyor, a treadmill, or a belt conveyor such as a conveyor belt or a link belt.
[0012] For example, the control unit comprises a control and / or regulating unit with a computer unit and a memory unit. For example, the device comprises a sensor unit that interacts with the control unit, for example, for acquiring sensor data relating to states of the device and / or the workpiece held by the device. For example, the control unit is configured to process the sensor data acquired by the sensor unit.
[0013] The essence of the invention is that a support element of the device, which is controllable by the control unit and serves to support the workpiece, is designed to be matched to the separating element, so that in a working position of the separating element, a contact section of the separating element can be moved towards an upper side of the placed workpiece, which is opposite the underside and supported by the support element, in order to apply a force for mechanically separating the connection point to the workpiece in the vicinity of the connection point, and wherein the contact section can be moved away from the upper side of the workpiece again after the separation process, wherein the support element can be temporarily brought into a predeterminable support position on the underside of the workpiece by means of the control unit, wherein the support position of the support element is matched to the position of a connection point on the workpiece,so that during a cutting process with the cutting element, support of the workpiece is provided by the support element being placed on the underside of the workpiece in the vicinity of the joint to be cut by the cutting element.
[0014] For example, undesirable elastic and / or plastic deformation, such as bending or tilting of parts of the workpiece section, can be minimized or avoided. For example, elastic and / or plastic deformation of the cut-out section and / or the remaining workpiece or a workpiece section during and / or after the cutting process can be minimized or avoided. Only the connection point is loaded to a relevant extent, with the workpiece only being loaded in the immediate vicinity or at the connection point in such a way that the connection point can be deliberately separated, for example, an associated material web or bridge breaks.
[0015] For example, when the cutting process takes place, the workpiece is in a resting position in the device or in the area of a machining area between two support sections of the support unit.
[0016] For example, the cutting element in the working position and the support element in the support position can be positioned in a coordinated manner. For example, the cutting element in the working position and the support element in the support position can be positioned close to a joint that is to be subsequently severed. The cutting element acts on the workpiece from above and the support element acts on the workpiece from below. For example, during the cutting process, the support element is in contact with the underside of the workpiece at exactly one point or along a line. For example, during the cutting process, the support element is in contact with the underside of the workpiece at several points simultaneously.
[0017] For example, the separating element and the support element can be controlled by the control unit.
[0018] For example, the positioning of the cutting element is adjusted to the respective contour of the cut-out section, as specified by the control unit. For example, the positioning of the support element is adjusted in a controlled manner to the respective contour of the cut-out section.
[0019] By means of a separating device, which comprises, for example, a ram or punch, a laser-cut section, such as a sheet metal part, is pressed out of the cut workpiece, which is then connected to the remaining workpiece by means of connecting points such as micro-webs.
[0020] The separated sections or sheet metal parts are then collected downwards, for example, in a box or on a conveyor belt, and transported away. For example, the separating device is designed so that it can be adapted to the respective workpiece or the respective position of the joint. The flatness of one end face of the separating device or the contact section, as well as its positioning near the joint, results in minimal bending of the workpiece component and uniform extrusion of the part.
[0021] For example, the support unit comprises two support sections, such as two roller tables, between which a machining area is located. For example, the machining area is located at a distance, such as a gap, between the two support sections. The separation of the sub-area takes place in the machining area. In the machining area, below the plane on which the underside of the workpiece rests, support elements, e.g., exactly two support elements, e.g., webs, such as two counter supports, are movable independently of one another transversely to the feed direction.
[0022] For example, the top surfaces or upper edges of all support elements are located on a common plane, which coincides with the top surface of the support unit or with the top surface of the roller tables. The table rollers thus serve as a support for the workpiece or the remaining workpiece and for the linear movement of the workpiece in the feed direction. For example, a guide, such as a linear guide or a rail guide, is provided on the side of the support unit or the side of the roller tables, running along the entire length of the device.
[0023] A feed unit, e.g., comprising a carriage with, for example, several grippers, moves along the length of the device or across the entire longitudinal extension of the device in the feed direction. By clamping the edge of the workpiece placed on the support unit, for example with grippers, the workpiece can be moved in the feed direction and precisely positioned within the machining area between two support sections of the support unit.
[0024] Above the processing area between the two support sections there is, for example, a unit with several separating elements, e.g. an ejection unit.
[0025] The separating elements can be moved, for example, across the entire width of the processing area, transversely to the feed direction, from a standby position to a working position, and can be moved back or forth from the working position to another position, such as the standby position or another working position. For example, two parallel and spaced-apart linear guides, such as two rails, are provided, along which the separating elements can be moved together, e.g., combined in an ejection unit, across the entire width of the support unit or the processing area.
[0026] An electric motor drive can be used to drive the movement of the separating elements or the ejection unit.
[0027] The ejection unit comprises, for example, several separating elements, such as several flat-headed plungers. Each plunger can be hydraulically, pneumatically, or electrically operated and can be extended and retracted linearly relative to a base body of the separating element or relative to a base body of the ejection unit.
[0028] The positioning and control of the cutting elements can be adapted to the contour of the cut-out section to be cut out, for example, individually. For example, a cylinder package can form the multiple cutting elements, which are positioned entirely within the contour of the section within the processing area between two support sections and can be moved in a controlled manner to corresponding locations on the upper side of the section.
[0029] Alternatively, exactly one separating element can be moved in two directions. For example, each separating element of several separating elements, such as each individual cylinder, can be moved independently in two directions. This allows the impact point of the separating elements to be adapted to the contour of the part and thus to the position of the connection points. This enables gentle separation of the components.
[0030] A lasered section of the workpiece that is pushed downwards is caught by a movable basket, a conveyor belt or a chute, for example, and transferred to a defined position.
[0031] A processing sequence, for example, might involve the laser-cut workpiece, with a cut-out section connected to the rest of the workpiece via connecting points, being placed on the first or inlet-side support section, such as a first roller table. For precise positioning of the workpiece, a centering pin is provided on the inlet side of the support unit, for example, or two retractable centering pins are provided on the support section. The alignment of the workpiece, which is brought to the device during placement on the support unit, can thus be achieved mechanically. Alternatively, the workpiece can be aligned using sensors or sensor-supported position detection.
[0032] The workpiece is pulled with the aid of the feed unit, e.g. a sheet feed, e.g. with grippers, from the inlet-side or first support section to the area of the machining area between two support sections, in the feed direction or in the direction of the outlet-side second support section.
[0033] As soon as the section to be pressed out is located below the ejection unit, the feed of the workpiece is stopped with the feed unit, and the two movable support elements, for example, are positioned so that they are located near the outer edges of the contour of the section. This minimizes or prevents bending of the workpiece or component during the separation process. The ejection unit is positioned so that the separation elements can optimally press the section out of the workpiece or separate it from the rest of the workpiece. Uniform pressing or separation prevents, for example, the pressed section from becoming tilted relative to the rest of the workpiece.
[0034] The pressed or separated part then falls downwards, for example onto a conveyor belt, into a movable basket or onto a chute, so that the part or component reaches a specific transfer point as a product that can be further processed.
[0035] Once the ejection process for the partial area is complete, the contact sections of the separating elements, such as the cylinders, retract, and the ejection unit, the support elements, and the grippers for the workpiece move back, e.g., to a waiting, starting, or starting position for the subsequent processing of the next workpiece guided through the device, which is placed on the inlet-side support section. The remaining workpiece remaining at the level of the support unit leaves the device on the outlet side via a second support section. Accordingly, the device is designed, for example, as a throughput unit or as a continuously operable processing device.
[0036] For example, the separating element can be moved from a standby position, in which the separating element is inactive, into the working position and back out of the working position. In the working position of the separating element, the connection point is separated by the action of the separating element. For example, in the standby position of the separating element, the action of the separating element on the workpiece is prevented and / or not possible, e.g., blocked.
[0037] For example, the contact section of the separating element is only moved in the working position to separate the connection point. For example, movement of the separating element out of the working position is prevented until the separating process is complete. For example, movement of the separating element out of the working position is prevented until the contact section of the separating element has been retracted back into the separating element. For example, movement of the separating element out of the working position is only possible when the contact section of the separating element has been moved away from the top side of the workpiece, for example, there is no contact with the top side of the workpiece.
[0038] For example, a plurality of separating elements are provided which are present in a fixed position, wherein a predeterminable separating element can be selected from the plurality of separating elements, wherein in order to separate the connection point the contact section of the selected separating element can be moved towards the top side of the placed workpiece. For example, the plurality of separating elements are present in a fixed position above a processing area of the device. For example, the plurality of separating elements are present in a fixed position above a region of a processing area of the device, such as between two roller tables. For example, if exactly one connection point of the partial area is present, exactly one separating element is active, wherein the contact section of exactly one separating element can be moved relative to the top side of the workpiece in a separating process. After the separating process the contact section can be moved back again.
[0039] For example, if there are exactly two connection points in the sub-area, exactly two respective separating devices are active, with the respective contact section of the two separating devices each being movable toward a different point on the upper side relative to the upper side of the workpiece in order to separate the corresponding connection point. For example, both contact sections move toward the upper side of the workpiece simultaneously, each in close proximity to the corresponding connection point. The respective point of action or contact for the simultaneous separation of the two connection points, on which the contact section acts, is located, for example, on the upper side of the cut-out sub-area.
[0040] After the cutting process, both contact sections move back away from the contact point, for example, simultaneously. Immediately after the end of the cutting device, the cut section falls downwards, due to gravity, for example, away from the remaining workpiece or away from the plane in which the remaining workpiece remains at least partially resting on the support unit.
[0041] The selection of exactly one separating element or of two or more than two separating elements whose contact section experiences a movement is carried out by the control unit.
[0042] For example, the multiple separating devices are arranged regularly above the processing area. For example, the separating devices are arranged in a row and column arrangement, e.g., with the same number of rows and columns, e.g., 3 x 3 or 4 x 4 or 5 x 5 separating devices, or, e.g., a total of 9 or 16 or 25 separating devices.
[0043] For example, the multiple separating elements are provided in such a way that the totality of the separating elements above a processing area of the device covers the entire extent of the processing area. The processing area is an area in which a workpiece can be positioned for a separating process, e.g., remains stationary during the separating process. This means that on a workpiece positioned in the processing area, each connection point can be separated from the multiple separating elements using exactly one assignable separating element, e.g., regardless of the number of connection points on the workpiece. The total number of the multiple separating elements is coordinated with a maximum number of connection points on a workpiece. For example, as a rule, no more than 6 or no more than 8 or no more than 10 or no more than 12 or no more than 14 or 16 connection points are formed on a workpiece between the partial area and the remaining workpiece.
[0044] For example, the cutting elements do not have to be moved from a waiting position to a working position for the cutting process. The cutting elements also do not have to be moved back or forth again after the cutting process. For example, each individual cutting element of the multiple cutting elements can be individually selected and controlled via the control unit. In principle, exactly one of the multiple cutting elements that are fixed in position across the entire extent of the processing area can be specifically selected and controlled, or several specifically selectable cutting elements can be controlled simultaneously. For example, exactly two or exactly three of the multiple fixed cutting elements available can be specifically controlled to extend the contact section of the two or three cutting elements. This means that the respective workpiece can be individually processed or cut in a way that is effective, fast and spatially coordinated with the positions of the connection points.whose entirety the connection points are separated, for example all connection points present in a sub-area such as all micro-bridges can be separated simultaneously with a number of active separating elements that corresponds to the number of connection points to be separated.
[0045] For example, the support unit has two support sections divided in the feed direction, with a machining area of the device located between the two support sections in the feed direction, with a workpiece being positionable in the machining area for a cutting operation. For example, there is a first support section in the feed direction, which is followed in the feed direction by, for example, exactly one machining area. For example, a second support section adjoins the machining area in the feed direction.
[0046] For example, the first support section serves to hold the workpiece in or on the fixture from outside the fixture. For example, the first and second support sections provide a horizontal transport or feed direction for the workpiece, or for the remaining workpiece after the cutting process.
[0047] For example, the machining area is an intermediate area of the device that is located in a central region, e.g., exactly in the center, e.g., symmetrically in the center, in the longitudinal or feed direction of the device. For example, the machining of the positioned workpiece by at least one cutting device takes place in the machining area. For example, the workpiece or the remaining workpiece remains in the machining area until all connection points present in the cut-out section have been severed during the cutting process.
[0048] For example, both support sections form two separate sections, the upper sides of which lie in a common spatial plane for supporting a workpiece.
[0049] The workpiece moves along a longitudinal extent of the device or in the feed direction from the first support section into the processing area. After the separating process, the cut out and separated section moves in a different direction than the remaining workpiece. For example, the remaining workpiece moves further in the feed direction to or along the second support section, e.g. in a horizontal direction. For example, after the separating process, the cut out and separated section moves further perpendicular to the feed direction, e.g. vertically downwards or perpendicular to the side in a further horizontal direction that differs from the feed direction. After the separating process, both the remaining workpiece and the cut out and separated section of the workpiece can be or are ejected from the device.
[0050] For example, a length of the machining area in the feed direction is matched to a length of a cut-out partial area of the workpiece, for example to a maximum possible length of a cut-out partial area of the workpiece. For example, a cut-out partial area of the workpiece, or at least its connection points, e.g. completely or partially, can thus be positioned within the machining area. This allows a cut-out partial area of the workpiece to be positioned in the machining area, e.g. positioned so that edge sections of the partial area of the workpiece extend into the first and / or second support section or alternatively not. For example, partial areas of the remaining workpiece can extend into the first and / or second support section and be supported there.
[0051] For example, the machining area is open at the bottom, except for one temporarily present support element, which is, for example, movable and positionable there, or except for exactly two or exactly three or more than three such support elements, which serve to support a workpiece present in the machining area or the cut-out section. This makes it possible, for example, to ensure that only the one support element or the multiple support elements, which can be individually positioned on each workpiece in the machining area, are not permanently fixed. For example, a support element can only be positioned in the vicinity of a connection point, but not at any other point on the workpiece.
[0052] For example, the processing area comprises a rectangular frame that encloses, for example, a vertically downwardly open opening for discharging the separated sub-area. For example, a frame section separates the processing area from the first and / or second support section.
[0053] For example, the workpiece can be positioned immobile within the machining area. This ensures that the workpiece remains in exactly the same position during machining, such as during the removal of the cut-out section, which is advantageous.
[0054] For example, the machining area and / or the support unit, such as the first and / or the second support section, comprises a sensor unit with a sensor for detecting sensor data. For example, one sensor, or several different sensors, provide sensor data which provide information relating to the device and / or the workpiece. For example, the sensor unit comprises a sensor for detecting a state of the workpiece and / or the device. For example, the sensors comprise a sensor for detecting the presence of the workpiece in the machining area. For example, the sensors comprise a sensor for detecting position data of the workpiece. For example, the sensors comprise a sensor for detecting position data of one, how exactly one and / or several connection points on the workpiece.For example, the sensors include a sensor for detecting a position of the cut-out portion of the workpiece relative to the processing area. For example, the sensors include a sensor for detecting the position of the workpiece in the processing area. For example, the sensors include a sensor for detecting a movement state of the workpiece and / or for detecting an outline of the workpiece and / or an outline of the cut-out portion of the workpiece. For example, position sensors and / or sensors for determining a movement state of the workpiece are provided.
[0055] For example, the sensors include a conventional sensor, such as an optical sensor. For example, the sensors include a sensor that operates without contact. For example, the sensors include a sensor that acquires sensor data through physical contact between the sensor and the surface of an object at a measuring point.
[0056] For example, the length of the device in the feed direction, or the total length, is between 6 meters and 7 meters, for example the length is 6 meters, 6.5 meters, 6.7 meters, or 7 meters. For example, there are exactly two support sections, e.g., each with the same length in the feed direction, in the range between 3 meters and 4 meters, for example, with a respective length of 3.1 meters, 3.5 meters, or 4 meters. For example, the length of the machining area in the feed direction is in a range between 0.2 and 0.5 meters, e.g., the length of the distance is 0.3 meters.
[0057] For example, a processing area of the device is provided, adjacent to which is an ejection area that receives a cut-out section separated from the remaining workpiece. The separation process for separating the cut-out section of the workpiece from the remaining workpiece takes place in the processing area.
[0058] For example, the discharge area is located vertically below the processing area. For example, the discharge area extends below the processing area to the level of the processing area. The discharge area is designed, for example, in such a way that an automatic gravity discharge is set up for the cut-out and separated section. The discharge area includes, for example, a chute, a conveyor belt, a movable basket, a drop section such as a free drop section, a collecting container, and / or the like for transporting the cut-out and separated section away.
[0059] For example, the discharge area is used to receive and forward the separated and cut-out part of the workpiece, such as a contour part that can be further processed.
[0060] For example, the discharge area is designed to forward the separated and cut-out portion of the workpiece to a collection area, e.g., to a storage area or to a means of transport for further transport of the separated and cut-out portion of the workpiece away from the device.
[0061] For example, a support element is designed to support a workpiece positioned in the machining area. For example, the support element serves to support the underside of the workpiece, for example, for point-like, linear, or planar support. For example, the support element has an upper side for supporting contact of the upper side with a point on the underside of the workpiece. For example, the support element is provided such that the support takes place at a point on the underside of the remaining workpiece, for example, for support exclusively at one point on the underside of the remaining workpiece.
[0062] For example, the support element is designed such that support is provided at a location on the underside of the cut-out portion of the workpiece. For example, support is provided exclusively at a location on the underside of the cut-out portion of the workpiece.
[0063] For example, the support element is provided in such a way that support is provided at one point on the underside of the cut-out portion of the workpiece and additionally at one point on the underside of the remaining workpiece. For example, two support elements are provided in such a way that a workpiece is supported by the two support elements simultaneously. For example, two support elements are provided in such a way that a workpiece is supported by a first support element at one point on the underside of the remaining workpiece and by a second support element at one point on the underside of the cut-out portion of the workpiece. For example, support is provided in the vicinity of an associated connection point. For example, the two support elements can be moved and positioned independently of one another.
[0064] For example, several support elements are provided, each acting in a similar manner in terms of the location of the support. For example, several support elements are provided, for example exactly two support elements, exactly three, or exactly four support elements. For example, several support elements are provided, with exactly one support element providing support in the vicinity of exactly one associated connection point. For example, each individual support element acts at exactly one connection point in a respective vicinity of exactly one connection point of several connection points formed between the relevant cut-out section of the workpiece and the remaining workpiece.
[0065] For example, a support element is designed in a web-like manner. For example, a support element comprises an elongated, narrow web body with a web upper surface that is level with the upper side of the rollers or the plane provided by the support section, serving as an underside counter support for the workpiece or for the remaining workpiece.
[0066] For example, a support element can be moved back and forth reversibly perpendicular to the feed direction, e.g. horizontally and transversely to the likewise horizontal feed direction. The feed direction coincides, for example, with a longitudinal direction of the support unit, which, for example, specifies a longitudinal direction of the device. For example, a support element can be moved back and forth linearly by means of the control unit, e.g. controlled or guided. For example, a support element can be moved in a manner coordinated with the position of the workpiece in the machining area, e.g. so that the support element supports the workpiece in the vicinity of an associated connection point. The support element acts, for example, in contact with a point on the underside of the remaining workpiece. For example, a support element can be moved transversely to its longitudinal axis. For example, a support element can be moved relative to the machining area. For example, a support element is driven, such as e.g.Motorized movement. For example, a support element can be moved along a linear guide by a motor.
[0067] For example, several support elements are provided, which can be positioned independently of one another relative to a workpiece. This allows several connection points on a considered cut-out section of the workpiece, for example, all connection points, to be separated simultaneously, e.g., by positioning exactly one support element of the several support elements in the vicinity of exactly one corresponding connection point of several different connection points. Accordingly, several separating elements are provided to simultaneously separate the several connection points on the considered cut-out section.
[0068] For example, the number of separating elements differs from the number of support elements, with the number of support elements being smaller than the number of separating elements. For example, exactly two or exactly three support elements and exactly 12 or exactly 16 separating elements are provided. For example, during a separating process, all support elements and only a subset of all separating elements act. For example, several but not all separating elements act simultaneously in a separating manner, while at the same time all support elements act in a supporting manner.
[0069] For example, the device alternatively comprises the same number of separating elements as support elements.
[0070] For example, exactly one support element can be positioned in such a way that exactly one support element simultaneously acts on the workpiece in the vicinity of two adjacent connection points. Thus, the number of active support elements is fewer than the number of active cutting elements for a given cutting process on a cut-out section of the workpiece.
[0071] For example, the multiple support elements are identical to one another. For example, the multiple support elements are movable along the same axis or in the same directions. For example, the multiple support elements are movable along a common guide, e.g., linearly. For example, exactly two support elements are provided. For example, exactly three, exactly four, or exactly five support elements are provided.
[0072] For example, exactly two web-shaped support elements are provided. For example, exactly three, exactly four, or more than four web-shaped support elements are provided. For example, a support element has a flat, level upper surface that can be brought into contact with a flat, level lower surface of the workpiece in the vicinity of the connection point.
[0073] For example, contact between the support element and the workpiece occurs exclusively in the area on the underside of the remaining workpiece, but not at a point on the underside of the cut-out portion of the workpiece. For example, the flat side of the support element comes into contact with a point on the underside of the workpiece, which is controlled by the control unit, e.g., by controlling a drive unit such as an electric drive for moving the support element or the multiple drives of the respective support elements.
[0074] For example, there are several identically designed support elements. For example, each support element can be controlled individually. For example, each support element can be positioned close to exactly one assigned connection point on the workpiece. For example, the several support elements are identical to one another. For example, alternatively, the several support elements are not identical to one another or are designed differently in size and / or shape. For example, the several support elements can be moved along the same axis or direction. For example, the several support elements can be moved along a common guide, e.g. linearly. For example, exactly two or exactly three or exactly four or exactly five support elements are provided.
[0075] Along the provided movement path of the support elements, these can be driven to any desired location and positioned to support the workpiece during a cutting process.
[0076] For example, a drive unit is provided with which the support element can be brought into a support position.
[0077] The support element can be driven by the drive unit, e.g. moved out of a waiting position, e.g. outside or at the edge of an area below the processing area, into e.g. the support position of the support element, in which the support element supports the workpiece in the vicinity of a connection point during the cutting process.
[0078] For example, it is possible to arrange for the support element to be driven to move from a support position of the support element to a next or different support position after the end of a separation process of a connection point, e.g. without detour via the waiting position.
[0079] The drive unit comprises, for example, a motorized drive unit. For example, the respective support element can be reversibly moved back and forth along a linear guide for the support element. The linear guide comprises, for example, two parallel tracks, between which the support element is positioned or movably mounted, e.g., transversely aligned to the feed direction. For example, exactly two web-like support elements are mounted on two travel rails and are driven and movable.
[0080] For example, a cutting element can be moved into a working position of the cutting element, so that during a cutting process, the contact section of the cutting element can be brought into contact with a predefined point on the cut-out section. For example, the control unit is designed so that the movement of the cutting element into the working position is controlled. This allows the contact section of the cutting element to apply a compressive force to the point, e.g., on the top side of the workpiece, e.g., the top side of the cut-out section, or to the predefined point of the cut-out section.
[0081] Alternatively or additionally, the control unit is designed such that the separating element can be moved into a working position such that the contact section of the separating element comes into contact with a point on an upper side of the connection point itself.
[0082] For example, the cutting device can be moved to exactly one working position from a selection of many different working positions. This allows any desired location on the workpiece or the cut-out section to be machined, or it can be applied to exactly one selected location.
[0083] For example, a workpiece can be machined whose outline extends beyond the limits of the machining area.
[0084] For example, the direction of movement of the separating element from the waiting position to the working position and back is set up linearly and transversely to the feed direction, e.g. horizontally and transversely to the horizontal feed direction.
[0085] For example, the cutting element can be reversibly moved back and forth. For example, exactly two support elements can be reversibly driven back and forth in the same direction as the cutting element. For example, the cutting elements and the support elements can be moved transversely to the feed direction, e.g., they have a parallel direction of movement. For example, the contact section of a cutting element can also be driven along a longitudinal axis of the cutting element toward the top side of the workpiece.
[0086] For example, several separating elements are mounted on a common ejection unit for the separating elements, wherein the ejection unit is driven and movable with the several separating elements to position a separating element in the working position of the respective separating element.
[0087] For example, the ejection unit comprises a frame with multiple separating elements. For example, the ejection unit is designed like a frame. For example, the ejection unit has a square frame in plan view, which surrounds an area in which the multiple separating elements are regularly arranged. For example, the separating elements are arranged in multiple rows and multiple columns. For example, the ejection unit with the multiple separating elements present thereon is constructed in such a way that the multiple separating elements are regularly arranged on the ejection unit, for example in a pattern. With the movable ejection unit, the base area of which is completely equipped with separating elements, almost any position above the workpiece in the processing area can be contacted by the respective extendable contact section of a controlled separating element.
[0088] For example, several cutting elements are identical to one another, for example, all cutting elements are identical. For example, the multiple cutting elements are aligned parallel to one another, e.g., with parallel longitudinal axes of the cutting elements. For example, the longitudinal axes are aligned perpendicular or normal to the top side of the workpiece placed in the processing area.
[0089] For example, the multiple separating elements each have a contact section comprising a contact surface that is aligned, for example, parallel to the plane of the upper side of the workpiece placed on it. For example, the contact section of a controlled or respective active separating element, with the ejection unit previously positioned above the partial area, can be moved toward a predeterminable location on the upper side of the cut-out partial area, in the vicinity of a connection point. After the separating process, the contact section of the separating element retracts, and the ejection unit moves back, for example, to the waiting position.
[0090] For example, several separating elements are present, each of which is independently driven and movable to position a separating element in the working position of the respective separating element. This represents an alternative to a frame arrangement. For example, each individual separating element can be moved separately, and its contact section can be extended and retracted as required.
[0091] For example, several separating elements can each be driven individually, e.g. electrically, e.g. with an electric motor.
[0092] For example, the coordinated movement of the separating elements is controlled by the control unit. For example, all separating elements are independently driven and moveable. This allows the separating elements to be moved simultaneously, or at the same time, to the connection point assigned to the respective separating element, depending on the number of joints to be separated. Once there, the respective contact section of, for example, exactly two separating elements can also be moved simultaneously, or at the same time, toward the top of the workpiece. This allows a separation process to be carried out comparatively quickly.
[0093] For example, the respective contact sections of, for example, exactly two separating elements, or exactly three separating elements, or exactly four separating elements can be moved together, e.g. independently of one another, toward the top of the workpiece. For example, if several separating elements have previously been moved into a working position, their respective contact sections can be actuated simultaneously. This allows several connection points to be separated together or at the same time.
[0094] In principle, it is also conceivable via the control unit that the movement of the multiple separating elements and / or the movement of the contact sections of the multiple separating elements takes place in a controlled manner one after the other or dependent on one another, for example with a time delay from one another.
[0095] For example, a separating element comprises a linearly driven movable contact section. For example, a separating element comprises a contact section designed as a driven movable plunger.
[0096] For example, a separating element comprises a cylinder-piston unit, wherein the contact section is assigned to a piston of the cylinder-piston unit. For example, the contact section is connected to a piston of the cylinder-piston unit. For example, the piston can be moved back and forth within a hollow volume of the cylinder. For example, a free end of an extension of the piston, e.g. a piston rod, forms the contact section. For example, an end face of the extension of the piston, e.g. an end face of a piston rod, forms a contact surface of the contact section, wherein the contact surface can be brought into mechanically acting or pressing contact at the connection point or its immediate vicinity in order to separate the connection point.
[0097] For example, the contact section of the separating element can be driven hydraulically. For example, the contact section of the separating element can be driven pneumatically. For example, the contact section of the separating element can be driven electrically. For example, the contact section of the separating element can be driven hydraulically and / or pneumatically and / or electrically.
[0098] For example, the support unit comprises two support sections, with a processing area being provided between the two support sections, with the ejection unit being located in the area of the processing area. For example, the workpiece can be positioned in the area of the processing area for processing or for separating the cut-out portion of the workpiece.
[0099] For example, the processing area comprises an intermediate section into which the separating element, e.g. the plurality of separating elements, can be moved upwards and activated to separate the connection points.
[0100] Accordingly, the machining area comprises an intermediate section into which a support element, e.g. the plurality of support elements, e.g. can be moved downwards to support the underside of the workpiece.
[0101] For example, the machining area or intermediate section extends over a portion of the fixture's length, corresponding to the maximum expected length of the cut-out portion of the workpiece. This means that a portion can usually be fully positioned within the machining area for the cutting process.
[0102] For example, a support element is designed such that during a cutting process the support element can be brought into contact with a section of an underside of the remaining workpiece.
[0103] For example, a support element is designed such that, during a cutting process, the support element can only be brought into contact with a section on the underside of the remaining workpiece. For example, a support element is designed such that, during a cutting process, the support element extends into a material-free gap area. For example, the gap area is a cut-out, material-free area between the cut-out section and the remaining workpiece.
[0104] For example, a support element is designed in such a way that during a separation process, the support element does not come into contact with a portion of the underside of the cut-out section. This means that after the joints are separated, the support element does not prevent the separated section from falling downwards.
[0105] For example, the contact section of the separating element has a contact surface for flat contact with the upper surface of the workpiece. This creates flat contact between the contact surface and a regularly flat upper surface of the workpiece.
[0106] For example, the contact surface is designed to be flat and planar, with the contact surface aligned parallel to the plane of the top surface of the workpiece. For example, the cutting element is a cylindrical ram or punch with a front free cross-sectional area that forms the contact surface. The size of the contact surface is adapted to the size of the partial area of the workpiece, for example, the size of the contact surface is a fraction of the area of the cut-out partial area. For example, the size of the contact surface is in the range of 0.1 cm. 2 up to 10 cm 2 , or for example in the range of 0.1 cm 2 up to 100 cm 2 , or e.g. in the range of 0.1 cm 2 up to over 100 cm 2 .
[0107] As an alternative to a flat contact surface, the contact surface can be point-shaped, for example.
[0108] For example, the contact surface is provided on the cutting element in such a way that in the working position of the cutting element, the contact surface comes into contact with an upper side in the cut-out part of the workpiece, but not with an upper side of the remaining workpiece.
[0109] For example, the contact surface is provided on the separating element in such a way that in the working position of the separating element the contact surface comes into contact close to a connection point or in the immediate vicinity of a connection point.
[0110] For example, the distance between the corresponding connection point and an edge of the area on the cut-out section that is pressed into contact with the contact surface of the positioned separating element is a few millimeters (mm), with the relevant point of the edge of the area facing the connection point. For example, the distance is in a range of 1-10 mm, or 1 to 20 mm, or 1 to 30 mm, or 1 to 40 mm, or more than 40 mm, e.g., 1-50 mm.
[0111] For example, the contact surface is detachably connected to a base body of the separating element. For example, the contact surface means an element that provides the contact surface of the contact section of the separating element. For example, the contact surface is an integral component of the separating element or the contact section, e.g., an end face of a free end of the separating element or the contact section. For example, alternatively, the contact surface is detachably connected to a base body of the separating element. For example, the contact surface on the base body is completely formed by a thin layer element that is separately attached to the base body, e.g., a thin layer element. For example, the layer element is detachably or permanently attached to the base body. For example, the layer element is attached to the base body with hook-and-loop fasteners or with adhesives or is glued.
[0112] For example, the layered element forming the contact surface is replaceable or interchangeable on the base body. The layered element is designed to meet different contact surface requirements. For example, the layered element for a workpiece is made of aluminum, stainless steel, or a high-gloss material, so that no surface marks remain on the upper surface of the section due to the pressing effect of the contact surface after the section is separated.
[0113] For example, the layer element is selected to suit a pressure and scratch-sensitive material of the workpiece.
[0114] For example, the coating element is comparatively soft and non- or slightly abrasive in order to avoid marks and / or scratches on the surface of the workpiece or part of the workpiece.
[0115] For example, the layered element is designed to be mechanically resilient, allowing it to achieve long service life on hardened surfaces of the workpiece, compared to materials subject to high mechanical wear. This is important, for example, if the imprint of a lateral gripper for transporting the workpiece in the conveying direction is not important. Character description
[0116] Further features and advantages of the invention are illustrated using schematically illustrated embodiments. In detail: Fig. 1 a plan view of a device for holding and machining a workpiece, Fig. 2 the device according to Fig. 1 in side view, Fig. 3 a perspective view obliquely from above of a section of the device according to Fig. 1 and Fig. 4 a view obliquely from above of a workpiece.
[0117] Fig. 1 shows schematically a device 1 for receiving and processing a plate-shaped workpiece 2, the outline of which is shown in Fig. 1 is only indicated. The workpiece 2 has a cut-out portion 3, which is connected to a remaining workpiece 6 via at least one connection point 4, 5 (see Fig. 4). The device 1 is designed to separate the cut-out portion 3 from the remaining workpiece 6, wherein the device 1 has a control unit 7 for operating the device 1. The control unit 7 is housed, for example, within a housing of the device 1.
[0118] The device 1 has a support unit 8 for placing the workpiece 2 with an underside of the workpiece 2 on the support unit 8. In addition, the device 1 has a feed unit 9, which can be controlled by the control unit 7, and has grippers 9a for the driven movement of a workpiece 2 along the support unit 8 in a feed direction V provided by the device 1. With the grippers 9a, a workpiece 2 can be gripped and moved at the edge, e.g., rolling on the underside on rollers 31 of a roller table. The feed unit 9 with the grippers 9a, for example exactly four here, can be moved in a driven manner along a linear guide 34 in the feed direction V. For example, the linear guide 34 is formed lengthwise and laterally of the support unit 8.
[0119] The support unit 8 comprises two support sections 8a and 8b, which are separated from each other in the feed direction V by a processing area 30, e.g., comprising an intermediate section or distance. The two support sections 8a and 8b are each formed, for example, by a roller table. The support unit 8 comprises, for example, a plurality of parallel rollers 31 rotatable transversely to the feed direction V, of which only a few are rotatable in Fig. 1-3 are marked.
[0120] The device 1 further comprises separating elements 10-25 (see Fig. 3), which serve to separate the cut-out partial area 3 from the remaining workpiece 6 in a cutting process for a workpiece 2 held on the device 1 and positioned in the processing area 30.
[0121] The device 1 comprises support elements 26, 27 that can be controlled by the control unit 7. These support elements serve to support the workpiece 2 and are designed to match the respective separating elements 10-25 or their achievable working position, so that in a working position of the respective separating elements 10-25, a contact section 28 of the respective separating elements 10-25 can be moved towards an upper side 2b of the placed workpiece 2, which lies opposite a lower side 2a that is supported by the support elements 26, 27. With the respective separating elements, for example with exactly two separating elements for each of the two connection points 4, 5, a force for mechanically separating the connection points 4, 5 can be applied to the workpiece 2 in the vicinity of the connection points 4 and 5.
[0122] After the separation process, the respective contact section 28 can be moved away again from the upper side 2b of the workpiece 2 or the partial area 3.
[0123] For example, in the case of workpiece 2 according to Fig. 4 a partially cut out or lasered hexagonal section 3 is connected to the remaining workpiece 6 via exactly two connection points 4 and 5 or via two narrow material bridges.
[0124] The pressing out of the partial area 3 from the workpiece 2 is carried out by the action of exactly two separating elements or by their respective contact section 28, which Fig. 4. In Fig. 4, a circular outline K1 is indicated in the vicinity of the connection point 4 on the upper side of the partial area 3, wherein the outline K1 represents a surface pressing surface contact by a contact section 28 of exactly one respective, for example, first separating element of the separating elements 10-25 on the upper side 2b during the separating process.
[0125] During the separation process, the driven contact section 28 of the respective, for example, first separation element presses in the area K1 from above in the direction of the surface 2b and separates the connection point 4 by mechanical separation or by breaking the associated material bridge.
[0126] The separation process for separating sub-area 3 is carried out in addition to the first separating element with exactly one further or a second separating element and its contact section 28, for example, simultaneously with the first separating element. Both separating elements are controlled from the group of separating elements 10-12. The remaining 23 separating elements remain inactive, without their respective contact section 28 being moved downward along S3.
[0127] The further, for example, second separating element presses through the associated driven contact section 28 onto a contact surface according to a region K2 from above in the direction of the surface 2b of the partial region 3 and separates the connection point 5 by mechanical separation or by breaking the associated material bridge.
[0128] For example, a distance a of a nearest edge of K2 or of the edge of the surface of a respective positioned separating element touching the contact section 28 to the connection point 5 (see Fig. 4), and correspondingly from K1 to the connection point 4, a few millimeters, for example in the range of 1-10 mm, or 1 to 20 mm, or 1 to 30 mm, or 1 to 40 mm or more than 40 mm, e.g. 1-50 mm.
[0129] After the separation process, the partial area 3 which is completely separated from the remaining workpiece 6, both connection points 4 and 5 are severed, and cut out, falls, for example, downwards into an ejection area 29 of the device 1. The remaining workpiece 6 remains supported on the support unit 8 and leaves the device 1 via the feed unit 9, transported further in the feed direction V.
[0130] In front of the separating device, the support elements, here for example the two separately controllable support elements 26, 27 driven in the direction S1, move into a respective support position to support the workpiece 2.
[0131] The several, or here exemplary 16, separating elements 10-25 are, for example, combined in a frame-like ejection unit 32, driven to move back and forth in the horizontal direction S2. The direction S2 is, for example, parallel to the direction S1. The ejection unit 32 with the separating elements 10-25 is in Fig. 1 in the waiting position and in Fig. 3 in a position in which exactly one or exactly two respective separating elements of the separating elements 10-25 are in a working position, wherein the respective separating elements 10-25, in the ejection unit 32, are located above a Fig. 3, the workpiece 2 (not shown) is in a controlled position. Exactly two separating elements can be positioned above the workpiece 2 such that their respective contact section 28 comes into contact in the area K1 or K2 on the upper side of the partial area 3 when the respective contact section 28 of the two respective separating elements is extended.
[0132] The ejection unit 32 is designed, for example, as a cylinder package, consisting of identical separating elements 10-25 arranged evenly, for example, four by four or in four rows and four columns.
[0133] Each separating element 10-25 has a vertically directed S3 (see Fig. 2) Retractable and extendable plunger or ram, with a respective contact section at the free end. Each separating element 10-25 or the respective contact section can be controlled specifically, separately, and independently by control unit 7.
[0134] In the support section 8a, a workpiece 2 is placed, e.g. aligned positioned or centered via a Fig. 4 not shown bore in the workpiece 2, through which a positionally fixed, e.g. countersunk, centering pin 33 protrudes at the input-side front end of the support section 8a. List of reference symbols 1 device 2 Workpiece 2a bottom 2b Top 3 sub-area 4, 5 connection point 6 Remaining workpiece 7 Control unit 8 support unit 8a support section 8b support section 9 Feed unit 9a Gripper 10-25 separating organ 26, 27 Support element 28 Contact section 29 Exit area 30 Editing area 31 roll 32 ejection unit 33 Centering pin 34 Linear guide
Claims
[1] Device (1) for receiving and machining a plate-shaped workpiece (2) having a cut-out partial area (3) which is connected to a remaining workpiece (6) via at least one connection point (4, 5), wherein the device (1) is designed to separate the cut-out partial area (3) from the remaining workpiece (6), wherein the device (1) has a control unit (7) for operating the device (1), wherein the device (1) has a support unit (8) for placing the workpiece (2) with an underside (2a) of the workpiece (2) on the support unit (8) and a feed unit (9) controllable by the control unit (7) for drivenly moving a workpiece (2) along the support unit (8) in a feed direction provided by the device (1), wherein the device (1) has a separating element (10-25) with which the cut-out partial area (3) is separated from the remaining workpiece (6) in a separating process. is separable,characterized bythat a support element (26, 27) of the device (1) which can be controlled by the control unit (7) and which serves to support the workpiece (2) is designed to be matched to the separating element (10-25), so that in a working position of the separating element (10-25) a contact section (28) of the separating element (10-25) can be moved in the direction of an upper side (2b) of the placed workpiece (2) opposite the underside, which is supported by the support element (26, 27), in order to apply a force for mechanically separating the connection point (4, 5) onto the workpiece (2) in the vicinity of the connection point (4, 5), and wherein the contact section (28) can be moved away from the upper side (2b) of the workpiece (2) again after the separating process, wherein the support element (26, 27) can be temporarily moved into a predeterminable support position on the underside (2a) of the workpiece (2), wherein the support position of the support element (26,27) is adapted to the position of a connection point (4, 5) on the workpiece (2), so that during a separation process with the separation element (10-25), support of the workpiece (2) is provided by the support element (26, 27) being placed on the underside (2a) of the workpiece (2) in the vicinity of the connection point (4, 5) to be separated by the separation element (10-25). [2] Device according to claim 1, characterized by that the separating element (10-25) can be moved from a waiting position of the separating element (10-25), in which the separating element (10-25) is not active, into the working position and can be moved out of the working position again, wherein in the working position of the separating element (10-25) the separation of the connection point (4, 5) takes place by the action of the separating element (10-25). [3] Device (1) according to one of the preceding claims, characterized bythat a plurality of separating elements (10-25) are provided which are present in a fixed position, wherein a predeterminable separating element (10-25) is selectable from the plurality of separating elements (10-25), wherein in order to separate the connection point (4, 5) the contact section (28) of the selected separating element (10-25) is movable in the direction of the upper side (2b) of the placed workpiece (2). [4] Device (1) according to one of the preceding claims, characterized by in that the support unit (8) has two support sections (8a, 8b) divided in the feed direction, wherein a processing area (30) of the device (1) is present between the two support sections (8a, 8b) in the feed direction, wherein a workpiece (2) can be positioned in the processing area (30) for a cutting process. [5] Device (1) according to one of the preceding claims, characterized bythat a processing area (30) of the device (1) is provided, to which an ejection area (29) adjoins, which receives a cut-out partial area (3) separate from the remaining workpiece (6). [6] Device (1) according to one of the preceding claims, characterized by that a support element (26, 27) is designed to support a workpiece (2) positioned in the processing area (30). [7] Device (1) according to one of the preceding claims, characterized by that several support elements (26, 27) are provided which can be positioned independently of one another relative to a workpiece (2). [8] Device (1) according to one of the preceding claims, characterized by that several identically designed support elements (26, 27) are present. [9] Device (1) according to one of the preceding claims, characterized bythat a drive unit is provided with which the support element (26, 27) can be brought into a support position. [10] Device (1) according to one of the preceding claims, characterized by that a separating member (10-25) is movable into a working position of the separating member (10-25) so that during a separating process the contact section (28) of the separating member (10-25) can be brought into contact with a predeterminable point of the cut-out partial area (3). [11] Device (1) according to one of the preceding claims, characterized by that a plurality of separating elements (10-25) are accommodated on a common ejection unit (32) for the separating elements (10-25), wherein the ejection unit (32) is movable in a driven manner with the plurality of separating elements (10-25) for positioning a separating element (10-25) in the working position of the respective separating element (10-25). [12] Device (1) according to one of the preceding claims, characterized bythat several separating elements (10-25) are present, wherein the separating elements (10-25) are driven and movable independently of one another for positioning a separating element (10-25) in the working position of the respective separating element (10-25). [13] Device (1) according to one of the preceding claims, characterized by that a separating member (10-25) comprises a linearly driven movable contact section (28). [14] Device (1) according to one of the preceding claims, characterized by that the contact section (28) of the separating member (10-25) is hydraulically driven. [15] Device (1) according to one of the preceding claims, characterized by that a support element (26, 27) is designed such that during a separating process the support element (26, 27) can be brought into contact with a section of an underside of the remaining workpiece (6). [16] Device (1) according to one of the preceding claims, characterized bythat the contact section (28) of the separating member (10-25) has a contact surface for flat contact on the upper side (2b) of the workpiece (2). [17] Device according to one of the preceding claims, characterized by that the contact surface is detachably connected to a base body of the separating element (10-25).