• 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:
    Laser cutting machine, comprising feeding means (3, 4) for moving a sheet (1) to be cut in the machine, at least one cutting head (5) by laser, and a work table (2) ) to support the sheet (1) to be cut by the cutting head (5) in pieces (1.1). The work table (2) is configured to move, not supporting the pieces (1.1) cut from the sheet (1), so that the pieces (1.1) cut are free to leave the work table by gravity (2). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2604189A1
    申请号:ES201631358
    申请日:2016-10-21
    公开日:2017-03-03
    发明作者:Iñaki Xabier AIZPURÚA ZENDOIA
    申请人:Goiti S Coop；
    IPC主号:
    专利说明:

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    DESCRIPTION
    LASER CUTTING MACHINE
    Technology Sector
    The present invention relates to a machine for making cuts on a metal sheet through a laser, said machine comprising a movable work table that allows the collection of parts obtained in a more economical and faster way than the machines known up to moment.
    State of the art
    The laser cutting machines for metal sheets include a laser cutting head that can be moved longitudinally and transversely and a work table where the metal sheet is supported, specially configured to support the work done by the laser cutting head (such as a table comprising longitudinal bars with skewers).
    When the metal sheet (or the desired section thereof) is supported on the worktable, the cutting head makes the cutting of desired pieces in the metal sheet, which must be collected from the worktable and duly deposited elsewhere.
    In that sense, in the known laser cutting machines the collection of the cut pieces is generally done manually through an operator, who picks up the cut pieces as the cut metal sheets arrive.
    Likewise, ways of collecting more automated cut pieces are also known. For example, there is a collection mode comprising a set of longitudinal arms that enter between the gaps left by the longitudinal bars with skewers of the worktable. The longitudinal arms move upwards, leaving the remaining material of the metal sheet and the pieces cut on said arms, then moving the longitudinal arms to the place of deposit of these elements. In this place is a set of longitudinal supports
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    for storage, so that the set of longitudinal arms moves down, intercalating with the longitudinal bars. In this way both the cut pieces and the remaining material are deposited on said longitudinal supports for storage.
    These types of collection systems are expensive and costly and, in addition, require the action of an operator that separates the cut pieces of the excess material from the metal sheet.
    It is therefore necessary a laser cutting machine that allows the collection of the cut pieces of the metal sheet in a more economical, fast and simple way, which improves the productivity of the machine.
    Object of the invention
    According to the invention, a laser cutting machine is proposed comprising:
    • Feeding means for moving a sheet to be cut in the machine,
    • at least one laser cutting head, and
    • a work table to support the sheet to be cut by the cutting head into pieces,
    where the work table is configured to move, ceasing to support the cut pieces of the sheet, so that the cut pieces are free to leave the work table by gravity.
    Preferably, the worktable is displaced by abatement. Likewise, preferably the worktable comprises two sections that rotate on pivot axes located on the longitudinal ends of the worktable. This configuration allows the cut pieces to fall in a more centered way and, in addition, needing a smaller travel space compared to other configurations.
    The cutting head is a cutting head by fiber optic laser technology, which provides different advantages over conventional laser cutting heads. For example, in the optical fiber laser the laser source does not require routine maintenance and its useful life is comparable to that of the life of the machine.
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    Likewise, the transport of the beam is done through optical fiber, eliminating the mirror systems used in conventional lasers, with the consequent saving in consumables.
    The cutting head can be moved longitudinally and transversely on the work table, which allows cutting pieces of any shape on the sheet. That is, according to a horizontal plane of displacement, the cutting head is movable both according to the direction and direction of advance of the sheet and perpendicularly with respect to said advance of the sheet.
    Additionally, the machine can comprise an auxiliary cutting head, which can be displaced transversely on the work table, which completely cuts the sheet after its passage on the work table, allowing the simplest and fastest collection of excess material originated after Cut the desired pieces on the sheet.
    Likewise, the machine can comprise a collection means for gravity deposition of the cut pieces when the worktable becomes open. Said collection means comprise a conveyor belt for transporting the cut pieces once they have left the worktable.
    Likewise, the machine comprises an evacuation means for displacement of the remaining material of the sheet after passing through the work table. The evacuation means comprises an evacuation tape arranged next to the exit end of the worktable, which allows the excess material to be collected easily.
    Preferably, the feeding means present in the machine comprise a first pair of rollers and a second pair of rollers, arranged before and after the worktable. At least one of these pairs of rollers is motorized, so that when the sheet passes between these pairs of rollers, there is dragging of said sheet. That is, the first pair of rollers and / or the second pair of rollers is motorized.
    Therefore, the machine of the present invention allows the collection of the cut pieces in a simpler, faster and more economical way, improving the productivity thereof compared to conventional laser cutting machines.
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    Description of the figures
    Figure 1 shows a front view of a laser cutting machine with movable work table object of the invention, according to a preferred embodiment.
    Figure 2 is a perspective view of the laser cutting machine of the previous figure.
    Detailed description of the invention
    The present invention relates to a sheet laser cutting machine (1) comprising a worktable (2) configured to be movable, so that, in the opening position, parts (1.1) cut from the sheet ( 1) they are no longer supported by the work table (2) and fall due to the effect of gravity, which allows a simpler and faster collection of said pieces (1.1).
    Preferably, the sheet (1) is a metal sheet (1), although it is also possible that the sheet (1) to be cut by the machine object of the present invention is made of other non-metallic materials (such as wood, plastic or others). The sheet (1) as such does not belong to the object of the present invention.
    The worktable (2) is configured to withstand the high temperatures generated by a laser cutting head (5) included in the cutting machine. The worktable (2) comprises a structure, preferably rectangular, inside which metal bars extend, separated from each other, comprising a triangular silhouette that is repeated continuously by said bars. The work table (2) with this configuration is commonly known as "skewer table".
    Preferably, the worktable (2) comprises a section (2.1, 2.2), and more preferably two sections (2.1, 2.2) to reduce the space necessary for the movement of the worktable (2), as shown in figures 1 and 2. The worktable (2) preferably comprises a rotation axis (2.3, 2.4) for each of the sections (2.1, 2.2). Each of the axes of rotation (2.3, 2.4) is mechanically related to one of the two sections (2.1,2.2). In the closed position, the two sections (2.1,2.2) form a continuous platform; while in the opening position, the two sections (2.1, 2.2) are folded towards the bottom of the
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    machine, having turned 90 ° towards the bottom.
    As seen in Figure 2, the cutting machine comprises actuators (2.5, 2.6), preferably pneumatic, which rotate the axes of rotation (2.3, 2.4), in turn causing the angular rotation or displacement of the two sections (2.1, 2.2) of the worktable (2), the worktable (2) remaining in the closed position or in the open position. Alternatively, the rotation of the two sections (2.1,2.2) of the worktable (2) can be obtained by different means, such as through an electric motor or through a set of pins and chains. Alternatively, the worktable (2) does not rotate on any axis, but is movable in its own plane.
    The machine comprises feeding means (3, 4) for moving the sheet (1). Preferably, said feeding means comprise a first pair of rollers (3) and a second pair of rollers (4). The first pair of rollers (3) is arranged before the worktable (2) in the direction of advance of the laminate (1), while the second pair of rollers (4) is then disposed of said worktable (2) in the direction of advance of the sheet (1). The rollers of both pairs of rollers (3, 4) face each other according to their longitudinal extension.
    The machine is configured so that the sheet (1) is passed between the first pair of rollers (3) and the second pair of rollers (4). To drive the displacement by dragging the sheet (1), in a preferred configuration the first pair of rollers (3) is motorized, while the second pair of rollers (4) rotates freely.
    In another alternative configuration, the first pair of rollers (3) rotates freely, while the second pair of rollers (4) is the one that is motorized. In another alternative configuration, the two pairs of rollers (3, 4) are motorized.
    On the other hand, the machine comprises a carriage (6) that travels longitudinally on the worktable, said carriage in turn comprising a rail (7), which extends along one side of said carriage (6). Likewise, the laser cutting head (5) comprises a pad (8) which is movable on the rail (7). Thus, the laser cutting head (5) is movable both longitudinally and transversely on the work table (2), being able to make any type of cut on the sheet (1), thus obtaining the parts
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    (1.1) desired.
    The possibility of the machine comprising two or more cutting heads (5) by laser, each of the cutting heads (5) by laser comprising a pathm (8) movable on the rail (7) of the carriage ( 6). In this way, the productivity of the machine is increased, since two or more pieces could be made at the same time.
    Likewise, the possibility of the machine comprising an auxiliary cutting head (9), which allows cuts in the transverse direction of the sheet (1), can thus be more easily collected to collect excess material (1.2) originated after cutting the desired pieces (1.1) of the sheet (1). The auxiliary cutting head (9) is, therefore, to completely section the sheet (1) perpendicularly with respect to the direction of travel of the sheet (1). Said auxiliary cutting head (9) is transversely movable on the work table (2) guided by a transverse bar (10), fixedly arranged to the machine, by means of a rail-patm assembly (not shown).
    However, the laser cutting head (5) can also make cuts in the transverse direction of the sheet (1), with the aforementioned object of allowing a simpler collection of the excess material (1.2). However, the provision of said auxiliary cutting head (9) for executing said function increases the productivity of the machine.
    Preferably, the laser cutting head (5) and the auxiliary cutting head (9) employ a cutting laser based on fiber optic technology, which is a type of solid state laser, which generates a length of wave around ten times lower than conventional lasers, which allows a better performance in the cutting of reflective materials (aluminum, copper, brass and the like). In the fiber laser, the necessary generation gases and turbine are eliminated in conventional lasers, so that the laser source does not require routine maintenance and its useful life is comparable to that of the life of the machine. In addition, the transport of the beam is done through fiber optics, eliminating the mirror systems used in conventional lasers, with the consequent saving in consumables.
    As previously mentioned, when the sections (2.1, 2.2) of the worktable are displaced, preferably due to a reduction in direction
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    vertically descending, the cut pieces (1.1) fall by gravity, so it is provided that the machine comprises collection means (11) so that the pieces (1.1) fall on it.
    These collection means (11) comprise a conveyor belt, which transports the coffee pieces (1.1) from the work table (2) to a warehouse or a collection place where an operator picks them up.
    Also, for the collection of the excess material (1.2) obtained after cutting the pieces (1.1) of the sheet (1), it is provided that the machine comprises an evacuation means (12). Said evacuation means (12) comprises an evacuation belt arranged next to the exit end of the worktable (2), which transports the excess material (1.2) to a warehouse, where it is then processed.
    As for the operation of the machine, initially the sheet (1) is passed through the pair of input rollers (3). Said sheet (1) can be continuous, being rolled in a coil, or it can be a sheet (1) that has already been previously cut. At that time, the rollers of the first pair of rollers (3) begin to rotate and the sheet (1) moves by drag in the direction of the second pair of rollers (4).
    In that situation, the sheet (1) is supported on the worktable (2), which is initially in the closed position, with the two sections (2.1, 2.2) creating a continuous platform. Once the sheet (1) reaches the second pair of rollers (4), being supported by the work table (2), the advance of the sheet (1) and the cutting head (5) are stopped by laser start cutting the desired pieces (1.1), moving for it both longitudinally and transversely on the worktable (2).
    Once the cutting head (5) has finished cutting the pieces (1.1), the sections (2.1, 2.2) of the worktable (2) are lowered into the opening position, so that the pieces (1.1) they are no longer supported by the work table (2) and are free to leave it by gravity. Thus, said parts (1.1) fall on the collection means (11) and are transported to a desired location. On the other hand, the excess material (1.2) of the sheet (1) is held by the first pair of rollers (3) and the second pair of rollers (4).
    After the coffee of the pieces (1.1) on the collection means (11), the work table (2) returns to its closing position, with the sections (2.1,2.2) creating again the continuous platform that serves as a surface support for the sheet (1). Then the machine starts up again, exerting traction on the sheet (1) and producing its advance. In this way, the excess material (1.2) is deposited in the evacuation medium (12) and on the work table (2) a sheet (1) that has not yet been cut is replaced, this process can be repeated as many times as desired.
    Although throughout the memory it has been considered that the pieces (1.1) are the 10 desired elements and the leftover material (1.2) is material to be discarded, it is possible that the desired elements are the leftover material (1.2 ), which would be a section of sheet (1) with different cuts in its surface, and the pieces (1.1) are in this case the material to be discarded.
    权利要求:
    Claims (11)
    [1]
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    1 Laser cutting machine, comprising:
    • feeding means (3, 4) for displacement of a sheet (1) to be cut in the machine,
    • at least one cutting head (5) per laser, and
    • a work table (2) to support the sheet (1) to be cut by the cutting head (5) into pieces (1.1),
    characterized in that the worktable (2) is configured to move, ceasing to support the pieces (1.1) cut from the sheet (1), so that the cut pieces (1.1) are free to leave the worktable by gravity (2).
    [2]
    2. - Cutting machine according to claim 1, characterized in that the worktable (2) is displaced by abatement.
    [3]
    3. - Cutting machine according to claim 1 or 2, characterized in that the worktable (2) comprises two sections (2.1,2.2).
    [4]
    4. - Cutting machine according to any one of claims 1 to 3, characterized in that the laser cutting head (5) is a cutting head by fiber optic laser technology.
    [5]
    5. - Cutting machine according to any one of claims 1 to 4, characterized in that the laser cutting head (5) is movable longitudinally and transversely on the work table (2).
    [6]
    6. - Cutting machine according to any one of claims 1 to 5, characterized in that it comprises an auxiliary cutting head (9) movable transversely on the work table (2) to completely section the sheet (1) after its step on the work table (2).
    [7]
    7. - Cutting machine according to any one of claims 1 to 6, characterized in that it comprises collection means (11) for gravity deposition of the cut pieces (1.1).
    [8]
    8. - Cutting machine according to claim 7, characterized in that the collection means (11) comprise a conveyor belt for transporting the cut pieces (1.1).
    [9]
    9. - Cutting machine according to any one of claims 1 to 8, characterized by 5 comprising an evacuation means (12) for moving the sheet (1) after its
    I pass by the work table (2).
    [10]
    10. - Cutting machine according to claim 9, characterized in that the evacuation means (12) comprises an evacuation tape arranged next to the end
    10 exit from the work table (2).
    [11]
    11. - Cutting machine according to any one of claims 1 to 10, characterized in that the feeding means (3, 4) comprise a first pair of rollers (3) and a second pair of rollers (4).
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    同族专利:
    公开号 | 公开日
    ES2604189B1|2017-11-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0289040A1|1987-04-30|1988-11-02|Amada Company Limited|Laser punch composite processing machine|
    JPH05161990A|1991-12-13|1993-06-29|Kazushige Iinuma|Heat cutting machine|
    US20090035117A1|2007-06-30|2009-02-05|Trumpf Werkzeugmaschinen Gmbh + Co. Kg|Removing a processed part|
    US20090212033A1|2008-02-20|2009-08-27|Kim Beck|Progressive laser blanking device for high speed cutting|IT201700111570A1|2017-10-05|2019-04-05|Dallan Spa|APPARATUS AND METHOD FOR LASER OR PLASMA CUTTING OF PIECES WITH LAMINAR MATERIAL WRAPPED INTO COIL|
    US11273524B2|2017-11-23|2022-03-15|Dallan S.P.A.|Apparatus for laser or plasma cutting of pieces of laminar material wound in coil|
    法律状态:
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    优先权:
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