• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a bending press (10) for bending a workpiece (19) comprising - a first platform (1) with a first tool holder (11) and a second platform (2) with a second tool holder (12), one of the platforms ( 1) for executing a work movement relative to the other platform (2), - a first safety device (20) for generating a light barrier (27) running between the tool holders (11, 12) transverse to the work movement of the movable platform (1) , wherein the first safety device (20) has a first holder (21) and a second holder (22), one of the holders (21) carrying a light transmitter (25) and the other holder (22) carrying a light receiver (26) and wherein the first holder (21) is arranged on a first side of the first platform (1) and can be adjusted relative to the first platform (1) by a first adjustment drive (23), - a control device (9) which is connected to the first n adjusting drive (23), characterized in that the first tool holder (11) is designed in the form of a guide rail which has a first end opening (13) at its first end for changing a bending tool (8), and that the access for changing a bending tool (8) is blocked via the first end opening (13) in a first relative position of the first holder (21) to the first platform (1) and in a second relative position of the first holder (21) to the first platform (1) is released.
    公开号:AT521530A1
    申请号:T50659/2018
    申请日:2018-07-27
    公开日:2020-02-15
    发明作者:
    申请人:Trumpf Maschinen Austria Gmbh & Co Kg；
    IPC主号:
    专利说明:

    The invention relates to a bending press according to the preamble of claim 1 and a method for operating a bending press.
    Bending presses are increasingly being equipped with safety devices which are intended to prevent undesired collisions of a bending tool with an object or the pinching of a finger or an operator's hand between bending tools or between a bending tool and the workpiece to be bent. Safety devices in the form of light barriers each require brackets for light transmitters and light receivers on the side of the press beam, as a result of which the safety device takes up a lot of space in these lateral areas.
    The brackets are adjustable, which enables automatic and flexible positioning of the light barrier depending on the bending tool used. For this purpose, it is known from the prior art that an operator enters the tool height via a user interface of the bending press and that the target position for the light barrier is automatically calculated from the tool height.
    The tool holders of bending presses are often designed in the form of guide rails. An operator changes the bending tools into or out of the tool holder of a bending press by inserting the holding part of a bending tool into the slot of the guide rail at the desired location. However, there are bending tools in which such a procedure is due to its high weight and / or its shape
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    N2018 / 12500-AT-00 is not possible. I.e. Such tools cannot be set up via the slot in the guide rail, that is to say in a direction transverse to the longitudinal extension of the rail.
    The object of the present invention was to overcome the disadvantages of the prior art and to provide a bending press by means of which tools with a specially designed holding section, as is customary in particular for heavier or larger tools, in bending presses with a safety device To be able to use a type of light barrier. The exchange, that is the introduction and / or removal of such bending tools in or out of the tool holder of the bending press should be possible easily and with little effort. The bending press should meet high safety standards.
    This object is achieved by a bending press of the type mentioned at the outset in that the first tool holder is designed in the form of a guide rail which has a first end opening for changing a bending tool at its first end, and in that the access for changing a bending tool is via the first frontal opening is blocked in a first relative position of the first bracket to the first platform and is released in a second relative position of the first bracket to the first platform.
    The holder can be adjusted by the adjustment drive between the first relative position (in particular a working position) and the second relative position (which can also be designated as the parking position).
    Platform can be understood to mean any structure that is suitable for carrying a tool holder or integrally forming it and absorbing forces that are transmitted during the bending process. The first platform and / or the second platform can in particular be designed as a press beam and / or have a longitudinal extension transverse to the working movement or pressing direction.
    The opening on the front enables the changing of bending tools which, due to the shape of their holding section, e.g. with pins for engaging in
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    N2018 / 12500-AT-00
    Grooves or grooves of the guide rail can be provided, can not be used transversely to the longitudinal extension of the guide rail. The bending tool is inserted with its holding section parallel to the longitudinal extension of the guide rail. At the same time, the safety device is designed such that it releases the area it occupies in the working position (corresponds to the first relative position) when a tool change is to be carried out. For this purpose, the adjustment drive is controlled by the control device, whereby the first holder is moved from the first relative position to the second relative position.
    The safety device is designed such that the position of the light barrier, which is determined by the position of the light transmitter on one of the holders, can be adjusted relative to the first tool holder or to the tool held therein. A (complete or partial) interruption of the light barrier creates a shadow that is detected by the light receiver. The control device connected to the light receiver stops or slows down the working movement of the bending press depending on a detected shadow.
    The light barrier position is set by moving the brackets) transversely to the longitudinal extension of the guide rail of the tool holder. The adjustment movement of a holder for positioning the light barrier and the adjustment movement between the first and second relative positions are carried out by the same adjustment drive and along the same direction, which is preferably parallel to the direction of the working movement of the bending press and is preferably vertical.
    The advantage of the invention is that the (first and / or - as explained below - the second) holder can be automatically moved into the second relative position and thus automatically gives access to changing a bending tool.
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    N2018 / 12500-AT-00
    “Blocked access for changing a bending tool via the first opening at the front” means that the opening at the front is completely or partially covered (by the holder) and / or an area required for the tool change is occupied by the holder. Accordingly, “approved access” means that the opening at the front and the subsequent area required for the tool change are released from the holder.
    The adjustment lever (s) can be used in particular as a linear drive, e.g. comprising a rack and pinion.
    The light barrier extends essentially parallel to the first tool holder or guide rail.
    A preferred embodiment is characterized in that the second holder is arranged on a second side of the first platform opposite the first side and is adjustable relative to the first platform by a second adjustment drive, the control device being connected to the second adjustment drive, and that the guide rail has at its second end a second end opening for changing a bending tool, and that access for changing a bending tool is blocked via the second front opening in a first relative position of the second holder to the first platform and in a second relative position of the second holder first platform is released. With regard to the second bracket, the same measures are taken here as for the first bracket, so that tools can also be changed (i.e. inserted or removed) via the other end of the guide rail.
    A preferred embodiment is characterized in that in the first relative position of the first holder to the first platform, the first end opening of the guide rail is at least partially, preferably completely, covered by the first holder, and / or in the first relative position of the
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    N2018 / 12500-AT-00 second bracket to the first platform, the second front opening of the guide rail is at least partially, preferably completely, covered by the second bracket.
    A preferred embodiment is characterized in that the first tool holder is an upper tool holder and the second tool holder is a lower tool holder. It has been shown that an arrangement of the first safety device or the brackets on the upper, movable platform is more space-saving, in particular if bending operations are carried out in the end region of the guide rail.
    A preferred embodiment is characterized in that the first platform is movable relative to the second platform. Here the second platform is stationary and the first platform carries out the work movement in relation to the stationary platform.
    A preferred embodiment is characterized in that the first adjustment drive can be actuated independently of the second adjustment drive. In this way, only the holder needs to be adjusted in the area in which a tool change is to take place. In addition, fine adjustments can be made between the light transmitter and light receiver.
    A preferred embodiment is characterized in that the light transmitter and / or the light receiver is / are arranged in the lower region of the respective holder and is / are arranged in the second relative position of the respective holder above the front opening (s) of the guide rail. This means that the safety device can be “parked” completely above the tool holder on at least one side of the platform.
    A preferred embodiment is characterized in that the first tool holder has a clamping device for fixing one or more bending tools (s) inserted into the guide rail, the clamping device being operable between a clamping state and a released state, and that the clamping device is operated by the control device
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    N2018 / 12500-AT-00 can be actuated and / or the state of the clamping device can be read out by the control device. The (detected) state of the clamping device can be used by the control device to adjust the holder (s) by means of the adjustment drive (s). When released or when the clamping device is released, the holder can be automatically moved to the second relative position (parking position), which means that an immediate tool change, e.g. is made possible by the operator.
    A preferred embodiment is characterized in that the bending press has a second safety device that can be brought into a state performing a safety function and into a non-safety state, and that the safety device comprises a sensor connected to the control device for detecting the current state of the safety device and that the control device is set up to bring the first holder and / or the second holder into the second relative position depending on the state of the second safety device detected by the sensor, preferably in the non-securing state.
    A preferred embodiment is characterized in that the bending press as a second safety device comprises a cover, in particular a door or a window, between a closed position in which the lateral access to the inside of the bending press is blocked or difficult (corresponds to the safety function), and an open position is movable. A sensor connected to the control device detects the position of the cover (opened or closed). Depending on the detected position (open), the control device can now move the holder into the second relative position (parking position) by means of the adjustment drive. For example, when the cover, in particular the door, is opened, the holder can be automatically moved into the second relative position by an operator, as a result of which the access for the tool change is immediately released.
    A preferred embodiment is characterized in that the control device is set up in a, preferably deactivatable, operating mode in order to control the first by actuating the first and / or second adjustment drive
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    N2018 / 12500-AT-00
    To move the holder and / or the second holder automatically into the second relative position when the cover is brought into the open position or is in the open position and / or when the clamping device is brought into the released state or is in the released state. Particularly preferred is that embodiment in which the holder (s) is / are only moved into the second relative position when both prerequisites are met, i.e. Cover open and clamping device released. This reflects the clear intention of the operator to change the tool.
    A preferred embodiment is characterized in that the control device is set up in a first operating mode in order to move the first platform at a first speed in the direction of the second platform for executing a working movement and immediately before the beginning of the bending process on the workpiece or when the distance between one of the first tool holder held bending tool and the workpiece to be machined a predetermined dimension, which is preferably at most 20mm, preferably at most 10mm, to move the first bracket and / or second bracket into the second relative position. This option is preferred if you want to move past the (upper) tool holder and the (e.g. vertical) box flap does not (yet) lead to a collision with the first safety device, especially the holder. The first operating mode thus serves to prevent the safety device from colliding with the workpiece during (open) bending. However, the first safety device is active until or shortly before the expected collision, which is why the working movement can take place at a relatively high speed at least up to this point in time.
    A preferred embodiment is characterized in that the control device is set up in a second operating mode in order to move the first holder and / or the second holder into the second relative position or to leave it in the second relative position before and / or during the first platform is moved toward the second platform at a second speed to perform a work movement. You choose this option when you look at the side
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    N2018 / 12500-AT-00 wants to move past the (upper) tool holder and the (e.g.) vertical box flap leads to a collision with the first safety device before the bend. The second operating mode thus serves to prevent the safety device from colliding with the workpiece before it is bent. Since such a working movement takes place without an active safety device, the second speed is preferably chosen to be relatively low.
    The first and / or second operating mode is preferably selected by the control device as a function of the respective bending program and / or the shape of the (resulting) workpieces or the starting workpieces.
    A preferred embodiment is characterized in that the first speed is greater, preferably at least 1.5 times greater, particularly preferably at least 2 times greater, than the second speed.
    A preferred embodiment is characterized in that the light barrier is formed from at least one light beam that is widened to form a light field, and / or comprises several light beams that preferably run in parallel. In the former case, a lens can be used to expand a single light beam. A homogeneous light field (transverse to the direction of propagation of the light barrier) is preferred. The term “light barrier” is thus understood to mean any type of light beam (s) or light field (s) - from one or more individual light beam Z-fields. The principle is used that a partial or complete interruption (by foreign objects or a hand or a finger of an operator, etc.) of the light barrier enables the light receiver to detect a darkening or a shadow.
    A preferred embodiment is characterized in that the light receiver is an image receiver, preferably a camera.
    The aim is also achieved by a method for operating a bending press according to the invention, wherein the control device moves the first holder and, if appropriate, the second holder into the second relative position by actuating the adjusting lift (s).
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    N2018 / 12500-AT-00
    A preferred embodiment is characterized in that the control device automatically moves the first holder and / or the second holder into the second relative position when the cover is brought into the open position by activating the first and / or second adjustment drive in a preferably deactivatable operating mode is or is in the open position and / or when the clamping device is brought into the released state or is in the released state.
    A preferred embodiment is characterized in that the control device moves the first platform in a first operating mode to execute a working movement at a first speed in the direction of the second platform and immediately before the beginning of the bending process or when the distance between a bending tool held by the first tool holder and the workpiece to be machined falls below a predetermined dimension, which is preferably at most 20 mm, preferably at most 10 mm, moves the first holder and / or second holder into the second relative position.
    A preferred embodiment is characterized in that the control device moves the first holder and / or the second holder into the second relative position in a second operating mode or leaves it in the second relative position before and / or during the first platform for executing a working movement with a second speed is moved towards the second platform.
    A preferred embodiment is characterized in that the first speed is greater, preferably at least 1.5 times greater, particularly preferably at least 2 times greater, than the second speed.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    Each show in a highly simplified, schematic representation:
    1 shows a bending press according to the invention;
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    N2018 / 12500-AT-00
    FIG. 2 shows the bending press from FIG. 1 with the side covers open;
    Fig. 3, the front opening of the guide rail.
    In the introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numbers or the same component names. The location information selected in the description, e.g. above, below, to the side, etc., referring to the figure described and illustrated immediately, and if the position is changed, these are to be applied to the new position.
    The exemplary embodiments show possible design variants, it being noted at this point that the invention is not limited to the specially illustrated design variants of the same, but rather also various combinations of the individual design variants with one another are possible and this variation possibility is based on the teaching of technical action through the present invention Ability of the specialist working in this technical field.
    The scope of protection is determined by the claims. However, the description and drawings are to be used to interpret the claims. Individual features or combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions. The object on which the independent inventive solutions are based can be found in the description.
    All information on value ranges in the objective description is to be understood so that it includes any and all sub-areas, e.g. the information 1 to 10 is to be understood so that all sub-areas, starting from the lower limit 1 and the upper limit 10, are included, i.e. all sections start with a lower limit of 1 or greater and end
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    N2018 / 12500-AT-00 at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or
    5.5 to 10.
    For the sake of order, it should finally be pointed out that, for a better understanding of the structure, elements have sometimes been shown to scale and / or enlarged and / or reduced.
    Fig. 1 shows a bending press 10 for bending a workpiece 19, here in the form of a press brake. A first (upper) platform 1 with a first tool holder 11 can be moved relative to a second (lower) platform 2 with a second tool holder 12 in order to carry out a working movement (see double arrow). The working movement is effected by the control device 9, which is connected to the press drive 18 and controls it.
    In the illustrated embodiment, the first tool holder 11 is an upper tool holder and the second tool holder 12 is a lower tool holder. The first platform 1 is movable relative to the second, stationary platform 2.
    The bending press 10 comprises a first safety device 20 for producing a light barrier 27 running between the tool holders 11, 12 transversely to the working movement of the movable platform 1. The first safety device 20 has a first holder 21 and a (opposite) second holder 22, one of which Mounts 21 carries a light transmitter 25 and the other bracket 22 carries a light receiver 26. Light transmitter 25 and light receiver 26 are also connected to the control device 9 (not shown).
    The first holder 21 is arranged on a first side of the first platform 1 and is adjustable relative to the first platform 1 by a first adjustment drive 23.
    The second holder 22 is arranged on a second side of the first platform 1 opposite the first side and is adjustable relative to the first platform 1 by a second adjustment drive 24.
    The control device 9 is connected to the first adjustment drive 23 and the second adjustment drive 24.
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    N2018 / 12500-AT-00
    The first safety device 20 is designed such that the position of the light barrier 27, which is determined by the position of the light transmitter 25 on one of the holders, can be adjusted relative to the first tool holder 11 or to the tool 8 held therein. A (complete or partial) interruption of the light barrier 27 causes a shadow, which is detected by means of the light receiver 26. The control device 9 connected to the light receiver 26 stops or slows down the working movement of the bending press 10 as a function of a detected shadow (activation of the press drive 18).
    At least the first tool holder 11, preferably also the second tool holder 12, is designed in the form of a guide rail which has at its first end a first end opening 13 for changing a bending tool 8 (see also FIG. 3).
    Access to changing a bending tool 8 via the first end opening 13 is blocked in a first relative position of the first holder 21 to the first platform 1 (FIG. 1) and is released in a second relative position of the first holder 21 to the first platform 1 (FIGS. 2 and 3).
    The guide rail can also have a second end opening 14 at its second end for changing a bending tool 8. The second bracket 22, like the first bracket, can block or open access to the front opening 14 (Fig. 1) (Fig. 2).
    As can be seen in FIG. 1, in the first relative position the first end opening 13 of the guide rail is at least partially, in this case completely, covered by the first holder 21. Likewise, the second end opening 14 is covered by the second bracket 22.
    The first adjustment drive 23 can preferably be actuated independently of the second adjustment drive 24, so that only the holder on that side has to be moved into the second relative position (parking position) on which a tool change also takes place.
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    N2018 / 12500-AT-00
    The light transmitter 25 and the light receiver 26 are arranged in the lower region of the respective holder 21, 22. Accordingly, in the second relative position (FIGS. 2 and 3) of the respective holder 21, 22, the light transmitter or light receiver is located above the end openings 13, 14 of the guide rail (see in particular FIG. 3).
    It can also be seen from FIGS. 1 and 2 that the first tool holder 11 has a clamping device 7 for fixing one or more bending tools (s) 8 inserted into the guide rail. The clamping device 7 can be actuated between a (the bending tool) clamping state and a released state. The clamping device 7 can be actuated by the control device 9 and / or the state of the clamping device 7 can be read out by the control device 9. The connection between the control device 9 and the clamping device 7 is indicated by a dashed line.
    The clamping device can have a plurality of clamping elements 6, e.g. in the form of pens, e.g. are pressed by a hydraulic drive into the interior of the guide rail against the holding section of a bending tool.
    The bending press 10 can also have at least one second safety device 3 which can be brought into a state performing a safety function and into a non-securing state. The second safety device 3 can include a sensor 4 connected to the control device 9 for detecting the current state of the safety device 3. The control device 9 can now preferably be set up to bring the first holder 21 and / or the second holder 22 into the second relative position depending on the state of the second safety device 3 detected by the sensor 4, preferably in the non-securing state.
    The second security device can - as shown in the preferred embodiment of Fig. 1 - e.g. in the form of a cover 5, in particular a door or a window, and between a closed position, in
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    N2018 / 12500-AT-00 which the lateral access to the inside of the bending press 10 is blocked or difficult (Fig. 1), and an open position (Fig. 2) is movable.
    The control device 9 can be set up, in particular programmed, in a preferably deactivatable operating mode in order to automatically move the first holder 21 and / or the second holder 22 into the second relative position by actuating the first and / or second adjustment drive 23, 24. when the cover 5 is brought into the open position or is in the open position (FIG. 2) and / or when the clamping device 7 is brought into the released state or is in the released state. This makes changing a bending tool (through a front opening) e.g. much easier by an operator, since the retraction of the holder and the resulting access can be done automatically.
    In a further, first operating mode (working mode), the control device 9 can be set up or programmed to move the first platform 1 at a first speed in the direction of the second platform 2 for executing a working movement and immediately before the bending process on the workpiece 19 or If the distance between a bending tool 8 held by the first tool holder 11 and the workpiece 19 to be machined falls below a predetermined dimension, which is preferably at most 20 mm, preferably at most 10 mm, the first holder 21 and / or second holder 22 into the second relative position to move. In the second relative position, the corresponding holder does not hinder the bending process and the workpiece can also be bent up into an area which is located to the side of the front opening.
    In a second operating mode (working mode), the control device can be set up, in particular programmed, to move the first holder 21 and / or the second holder 22 into the second relative position or to leave it in the second relative position before and / or during the first platform 1 for executing a work movement at a second speed in rich
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    N2018 / 12500-AT-00 device second platform 2 is moved. This operating mode is used in cases where the holder would collide with the workpiece before the actual bending.
    The first speed is higher, preferably at least 1.5 times higher, particularly preferably at least 2 times higher, than the second speed. Due to the deactivated safety function (the first safety device) in the second operating mode, the working movement is carried out more slowly here.
    The light barrier 27, in particular a laser light barrier, can be formed from at least one light beam that is widened to form a light field, and / or can comprise several light beams that preferably run in parallel. The light receiver 26 can be an image receiver, preferably a camera.
    The invention also relates to the method for operating a bending press 10, in which the control device 9 moves the first holder 21 and optionally the second holder 22 into the second relative position by actuating the adjustment drive (s) 23, 24. The corresponding method steps have already been described at the beginning and can be seen from the preceding description of the figures. To avoid repetition, reference is therefore made again to the relevant text.
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    N2018 / 12500-AT-00
    Reference list first platform second platform second safety device
    sensor
    cover
    Clamping elements
    Clamping device
    Bending tool
    Control device
    Bending press first tool holder second tool holder first end opening second end opening press drive
    Workpiece first safety device first holder second holder first adjustment drive second adjustment drive
    Light transmitter
    Light receiver
    Photoelectric barrier
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    N2018 / 12500-AT-00
    权利要求:
    Claims (20)
    [1]
    Claims
    1. Bending press (10) for bending a workpiece (19), in particular press brake, comprising
    a first platform (1) with a first tool holder (11) and a second platform (2) with a second tool holder (12), one of the platforms (1) being movable relative to the other platform (2) in order to perform a working movement,
    - A first safety device (20) for generating a light barrier (27), in particular laser light barrier, running between the tool holders (11, 12) transversely to the working movement of the movable platform (1), the first safety device (20) being a first holder (21) and has a second holder (22), one of the holders (21) carrying a light transmitter (25) and the other holder (22) carrying a light receiver (26) and the first holder (21) on a first side of the first platform (1 ) arranged and adjustable by a first adjustment drive (23) relative to the first platform (1),
    - A control device (9) which is connected to the first adjustment drive (23), characterized in that the first tool holder (11) is designed in the form of a guide rail which has a first end opening (13) at its first end for changing one Bending tool (8), and that access to change a bending tool (8) via the first end opening (13) is blocked in a first relative position of the first holder (21) to the first platform (1) and in a second relative position of the first Bracket (21) for the first platform (1) is released.
    [2]
    2. Bending press according to claim 1, characterized in that the second holder (22) is arranged on a second side of the first platform (1) opposite the first side and is adjustable relative to the first platform (1) by a second adjustment drive (24) is, the control device
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    N2018 / 12500-AT-00 (9) is connected to the second adjustment drive (24), and that the guide rail has at its second end a second end opening (14) for changing a bending tool (8), and that the access for changing a bending tool (8) is blocked via the second end opening (14) in a first relative position of the second holder (22) to the first platform (1) and is released in a second relative position of the second holder (22) to the first platform (1) .
    [3]
    3. Bending press according to claim 1 or 2, characterized in that in the first relative position of the first holder (21) to the first platform (1), the first end opening (13) of the guide rail at least partially, preferably completely, through the first holder (21 ) is covered, and / or that in the first relative position of the second holder (22) to the first platform (1) the second end opening (14) of the guide rail is at least partially, preferably completely, covered by the second holder (22).
    [4]
    4. Bending press according to one of the preceding claims, characterized in that the first tool holder (11) is an upper tool holder and the second tool holder (12) is a lower tool holder and / or that the first platform (1) is movable relative to the second platform (2) .
    [5]
    5. Bending press according to one of claims 2 to 4, characterized in that the first adjustment drive (23) can be actuated independently of the second adjustment drive (24).
    [6]
    6. Bending press according to one of the preceding claims, characterized in that the light transmitter (25) and / or the light receiver (26) is / are arranged in the lower region of the respective holder (21, 22) and in the second relative position of the respective holder ( 21, 22) is / are arranged above the front opening (s) (13, 14) of the guide rail.
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    N2018 / 12500-AT-00
    [7]
    7. Bending press according to one of the preceding claims, characterized in that the first tool holder (11) has a clamping device (7) for fixing one or more bending tools ^) (8) inserted into the guide rail, the clamping device (7) between a clamping State and a released state can be actuated, and that the clamping device (7) can be actuated by the control device (9) and / or the state of the clamping device (7) can be read out by the control device (9).
    [8]
    8. Bending press according to one of the preceding claims, characterized in that the bending press (10) has a second safety device (3) which can be brought into a state performing a safety function and into a non-safety state, and that the safety device is connected to the control device (9) connected sensor (4) for detecting the current state of the safety device (3), and that the control device (9) is set up to, depending on the state of the second safety device (3) detected by the sensor (4), preferably in the non-securing state, to bring the first holder (21) and / or the second holder (22) into the second relative position.
    [9]
    9. Bending press according to one of the preceding claims, characterized in that the bending press (10) as a second safety device comprises a cover (5), in particular a door or a window, between a closed position in which the lateral access to the inside of the Bending press (10) is blocked or difficult, and an open position is movable.
    [10]
    10. Bending press according to one of the preceding claims, characterized in that the control device (9) is set up in a, preferably deactivatable, operating mode in order to control the first and / or second adjustment drive (23, 24), the first holder (21) and / or to move the second holder (22) automatically into the second relative position when the cover (5) is brought into the open position or is in the open position
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    N2018 / 12500-AT-00 and / or if the clamping device (7) is brought into the released state or is in the released state.
    [11]
    11. Bending press according to one of the preceding claims, characterized in that the control device (9) is set up in a first operating mode to move the first platform (1) at a first speed in the direction of the second platform (2) and to perform a working movement immediately before the beginning of the bending process on the workpiece (19) or when the distance between a bending tool (8) held by the first tool holder (11) and the workpiece (19) to be machined is a predetermined dimension, which is preferably at most 20mm, preferably at most 10mm , falls short of moving the first holder (21) and / or second holder (22) into the second relative position.
    [12]
    12. Bending press according to one of the preceding claims, characterized in that the control device (9) is set up in a second operating mode to move the first holder (21) and / or the second holder (22) into the second relative position or in the to leave the second relative position before and / or while the first platform (1) is being moved at a second speed in the direction of the second platform (2) in order to carry out a working movement.
    [13]
    13. Bending press according to claim 12, characterized in that the first speed is greater, preferably at least 1.5 times greater, particularly preferably at least 2 times greater, than the second speed.
    [14]
    14. Bending press according to one of the preceding claims, characterized in that the light barrier (27) is formed from at least one light beam expanded to form a light field, and / or comprises a plurality of light beams which preferably run in parallel.
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    N2018 / 12500-AT-00
    [15]
    15. Bending press according to one of the preceding claims, characterized in that the light receiver (26) is an image receiver, preferably a camera.
    [16]
    16. The method for operating a bending press (10) according to one of the preceding claims, characterized in that the control device (9) the first holder (21) and optionally the second holder (22) by controlling the adjustment drive (s) (23 , 24) moved into the second relative position.
    [17]
    17. The method according to claim 16, wherein the bending press (10) is designed according to claim 10, characterized in that the control device (9) in a, preferably deactivatable, operating mode by controlling the first and / or second adjustment drive (23, 24). the first holder (21) and / or the second holder (22) automatically moves into the second relative position when the cover (5) is brought into the open position or is in the open position and / or when the clamping device (7) is released Brought into state or is in a dissolved state.
    [18]
    18. The method according to claim 16 or 17, characterized in that the control device (9) in a first operating mode for executing a working movement moves the first platform (1) at a first speed in the direction of the second platform (2) and immediately before the beginning of the bending process on the workpiece (19) or if the distance between a bending tool (8) held by the first tool holder (11) and the workpiece (19) to be machined falls below a predetermined dimension, which is preferably at most 20 mm, preferably at most 10 mm, the first Bracket (21) and / or second bracket (22) moved into the second relative position.
    [19]
    19. The method according to any one of claims 16 to 18, characterized in that the control device (9) in a second operating mode moves the first holder (21) and / or the second holder (22) into the second relative position or leaves it in the second relative position before and / or during the first
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    N2018 / 12500-AT-00
    Platform (1) is moved towards the second platform (2) at a second speed in order to carry out a working movement.
    [20]
    20. The method according to claim 19, characterized in that the first speed is greater, preferably at least 1.5 times greater, particularly preferably at least 2 times greater, than the second speed.
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    JP2021531977A|2021-11-25|
    AT521530B1|2020-04-15|
    EP3829794A1|2021-06-09|
    CN112512715A|2021-03-16|
    US20210121930A1|2021-04-29|
    WO2020019012A1|2020-01-30|
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    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE69735472T2|1996-01-05|2006-12-14|Appleyard, Thomas John, Doubleview|OPTICAL SAFETY DEVICE FOR MOUNTING ON A MOVABLE COMPONENT|
    EP1259340B1|2000-02-04|2005-03-23|Trumpf Maschinen Austria GmbH & CO. KG.|Safety device for a manufacturing machine, for example a folding press|
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    EP3321557A1|2016-11-10|2018-05-16|Fiessler Elektronik GmbH & Co. KG|Deformation device and method for operating a deformation device|
    JPH0726011U|1993-10-20|1995-05-16|株式会社小松製作所|Press brake safety device|
    DE202010017960U1|2010-09-20|2013-04-17|Bystronic Laser Ag|Protection system for operating safety on machines, in particular press bending presses|DE102019007884A1|2019-11-13|2021-05-20|EVOBEND GmbH|Bending machine and method for processing a workpiece with a bending machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50659/2018A|AT521530B1|2018-07-27|2018-07-27|Bending press and method for operating a bending press|ATA50659/2018A| AT521530B1|2018-07-27|2018-07-27|Bending press and method for operating a bending press|
    PCT/AT2019/060245| WO2020019012A1|2018-07-27|2019-07-25|Bending press and method for operating a bending press|
    JP2021502483A| JP2021531977A|2018-07-27|2019-07-25|How to operate a bending press and a bending press|
    US17/255,053| US20210121930A1|2018-07-27|2019-07-25|Bending press and method for operating a bending press|
    CN201980050269.1A| CN112512715A|2018-07-27|2019-07-25|Press brake and method for operating a press brake|
    EP19759492.2A| EP3829794A1|2018-07-27|2019-07-25|Bending press and method for operating a bending press|
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