JP2014172046A - Laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser beam machine having a nozzle holder unit which is provided with plural nozzles which are detachably exchanged at an end of a carriage in an X-axis direction in a positioning device for performing movement positioning of a work-piece in X and Y directions.SOLUTION: A laser beam machine includes a laser working head 9 for performing laser working of a sheet-like work-piece placed on a work table 3, above the work table 3, and a work-piece movement positioning device 11 for performing relative movement positioning of the work-piece in X-axis and Y-axis directions with respect to the laser working head 9. In the laser beam machine, a carriage 15 equipped with plural work clamps which can freely clamp an end edge of the work-piece in the Y-axis direction is so provided to the work-piece movement positioning device 11 so as to be movable in the X-axis direction, a nozzle holder unit 17 equipped with detachable plural nozzles 23 which can be detachably exchanged with respect to the laser working head 9 is provided to an end of the carriage 15 in the X-axis direction, and an opening and closing cover 51 which can freely cover the upper side of the plural nozzles 23 provided to the nozzle holder unit 17 is provided.

Description

  The present invention includes a laser processing head for performing laser processing of a plate-shaped workpiece placed on a work table above the work table, and the workpiece is placed in X and Y axis directions with respect to the laser processing head. X-axis direction of a carriage that is movable in the X-axis direction with a plurality of clamps that can clamp the edge of the workpiece in the Y-axis direction. The present invention relates to a laser processing machine having a configuration in which a nozzle holder unit including a plurality of nozzles attached to and detached from the laser processing head is provided at an end of the laser processing head.

  Conventionally, in a laser processing machine, the nozzle is automatically attached to and detached from the laser processing head (see, for example, Patent Documents 1, 2, and 3).

JP-A-4-309487 Japanese Unexamined Patent Publication No. 7-185865 JP 2008-105073 A

  In the configurations described in Patent Documents 1 and 2, in order to replace the nozzle with the laser processing head, a new configuration for moving the nozzle to be replaced to the replacement position is required, and the configuration becomes complicated. There is a problem. The configuration described in the cited document 3 is a configuration in which a plurality of nozzles to be replaced are arranged in the end region of the bed that supports the workpiece, and the replacement mechanism is a relatively simple configuration. However, when a workpiece having the same size as a conventional large workpiece is to be processed, there is a problem that the bed has to be made larger and the laser processing head has to be moved more greatly to the position of the nozzle to be replaced. is there. In other words, when the bed is maintained at the conventional size, the size of the workable workpiece is reduced.

  The present invention has been made in view of the above-described problems, and includes a laser processing head that performs laser processing of a plate-shaped workpiece placed on a work table above the work table, and the laser processing head includes On the other hand, a laser processing machine equipped with a workpiece movement positioning device capable of relatively moving and positioning the workpiece in the X and Y axis directions, wherein a plurality of workpiece clamps capable of clamping the edge in the Y axis direction of the workpiece are provided. A nozzle holder unit provided with a plurality of nozzles detachably attachable to and detachable from the laser processing head; It is provided in the edge part of a direction.

  The laser beam machine may further include an open / close cover that can cover a plurality of nozzles provided in the nozzle holder unit.

  In the laser processing machine, the opening / closing cover includes a sensor for detecting the presence or absence of a nozzle provided in the nozzle holder unit.

  Further, in the laser processing machine, the nozzle holder unit is provided with nozzle drop prevention means for preventing the nozzle from dropping off.

  The laser processing machine further includes a punch mold holder including a punch mold for punching the workpiece, and a die mold holder including a die mold cooperating with the punch mold, The laser processing head is provided at a position changed in the X-axis direction with respect to a punching position by a punching die and a die die, and the nozzle holder unit has an X of the carriage on the changing side of the laser processing head. It is provided in the edge part of an axial direction, It is characterized by the above-mentioned.

  According to the present invention, the nozzle holder unit having the nozzle to be replaced at the end of the work carriage in the work movement positioning device capable of moving and positioning the work relative to the laser processing head in the X and Y axis directions is provided. Since it is provided, it is possible to simplify the configuration in which the nozzle should be replaced with respect to the laser processing head and to save space.

It is the perspective explanatory view which showed notionally and schematically the structure of the principal part of the laser beam machine which concerns on embodiment of this invention. It is the expansion perspective view which expanded a part of main part shown in FIG. It is a disassembled perspective explanatory drawing of a nozzle holder. It is perspective explanatory drawing which decomposed | disassembled some nozzle holder units.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. As already well known, a laser processing machine applies a plate-like workpiece to a laser processing head that can be moved up and down at a predetermined position. A structure that moves and positions in the X and Y axis directions and a laser processing head that can reciprocate in one direction in the Y axis direction (or X axis direction) and move and position the workpiece in the X axis direction (or Y axis direction). There is a configuration. In addition, there is a configuration in which a laser processing machine includes a laser processing head that is relatively movable in the X, Y, and Z axis directions with respect to a work on a work table. Further, as a laser processing machine, there is a punch / laser composite processing machine having a configuration in which a punch press for punching a plate-like workpiece and a laser processing machine are combined.

  As described above, the laser processing machine has various configurations, but the present invention will be exemplified and described for the case where the present invention is implemented in a combined punch / laser processing machine. However, the laser processing machine according to the present invention is not limited to the punch / laser combined processing machine, and can be applied to the above-described various types of laser processing machines.

  Now, referring to FIG. 1, a laser processing machine 1 according to an embodiment of the present invention has a configuration having a function of punching a plate-like workpiece (not shown) and a function of performing laser processing. . Since this type of processing machine is well known as a so-called punch / laser combined processing machine (see, for example, Japanese Patent Application Laid-Open No. 2005-81409), the overall configuration will be briefly described.

  The laser processing machine 1 is provided with a work table 3 that supports a plate-like work so as to be movable in the X and Y axis directions. On one side of the work table 3 in the Y axis direction, the work is punched. A punching die holder including a plurality of die molds (not shown) and a die die (not shown) for performing and a turret device 5 as an example of the die mold holder are provided. Further, a laser processing head 9 for performing laser processing on the workpiece is provided on the upper frame 7 in the laser processing machine 1 so as to be vertically movable and movable in the Y-axis direction. Note that the punching position for punching the workpiece and the laser processing position for lasering the workpiece are provided so as to be biased in the X-axis direction, as is well known.

  Furthermore, the laser beam machine 1 is provided with a workpiece movement positioning device 11 that can move and position the workpiece relatively in the X and Y axis directions with respect to the punching position and the laser processing position. As is well known, the workpiece movement positioning device 11 includes a carriage base 13 that is long in the X-axis direction so as to be movable and positionable in the Y-axis direction. The carriage base 13 is provided with a carriage 15 provided with a plurality of workpiece clamps (not shown) that can clamp the edge of the workpiece in the Y-axis direction so as to be movable and positionable in the X-axis direction.

  With the above configuration, in a state where the workpiece is clamped by the workpiece clamp, the carriage base 13 is moved and positioned in the Y-axis direction, and the carriage 15 is moved and positioned in the X-axis direction, so that the punching processing position and the laser processing position are set. In contrast, the workpiece can be moved and positioned relatively in the X and Y axis directions. In the above configuration, one end portion of the carriage 15 corresponding to the side where the laser processing position is changed in the X-axis direction with respect to the punching processing position extends beyond the laser processing position in the X-axis direction. The punching position is movable to a position corresponding to the Y-axis direction.

  That is, the one end portion of the carriage 15 is configured to be able to traverse in the X-axis direction a position corresponding to the Y-axis direction with respect to the laser processing position. Further, the other end portion of the carriage 15 in the X-axis direction crosses a position corresponding to the Y-axis direction with respect to the punching processing position in the X-axis direction and reaches a position corresponding to the laser processing position in the Y-axis direction. It is movable.

  As already understood, one end portion of the carriage 15 in the X-axis direction can be moved to a position corresponding to the punching processing position beyond the laser processing position in the X-axis direction. The other end portion of the carriage 15 is movable to a position corresponding to the laser processing position beyond the punching processing position in the reverse direction of the X-axis direction. Therefore, in the present embodiment, when one end portion of the carriage 15 in the X-axis direction moves to a position substantially corresponding to the punching processing position in the Y-axis direction, the nozzle of the nozzle is moved with respect to the laser processing head 9. As shown in FIG. 1, a nozzle holder unit 17 is provided at the one end of the carriage 15 in order to perform detachment and replacement.

  The nozzle holder unit 17 includes a base bracket 19 (see FIG. 2) detachably attached to the one end of the carriage 15 via a plurality of attachments (not shown) such as bolts. The bracket 19 is integrally provided with a support bracket 21 having a substantially L-shaped cross section by welding or the like. The support bracket 21 is formed long in the X-axis direction, and the horizontal support portion 21A of the support bracket 21 is provided with a plurality of nozzles 23 that are detachably replaceable with respect to the laser processing head 9. Holders 25 are provided at appropriate intervals in the X-axis direction.

  As shown in FIG. 3, the nozzle holder 25 includes a holder block 29 fixed on the horizontal support portion 21 </ b> A of the support bracket 21 by a plurality of fixtures 27 such as bolts. A hole 31 into which the lower portion of the nozzle 23 can enter is formed at the center of the holder block 29, and a recess 33 is formed around the hole 31. An elastic member 37 such as a coil spring is mounted in each of the small holes 35 formed in the bottom of the recess 33, and a support member 39 such as a ball is supported on each elastic member 37. Has been.

  The upper part of each support member 39 is in a state of always projecting upward from the bottom of the recess 33 by the action of the elastic member 37, and the nozzles 23 detachably engage with the support members 39. A holder plate 43 having an engagement hole 41 at the center is supported so as to be movable in the Y-axis direction. The holder plate 43 is in a state in which movement in the X-axis direction is restricted in the recess 33.

  On the upper surface of the holder block 29, a nozzle pressing plate 45 as an example of a nozzle drop prevention means for preventing the nozzle 23 from coming out of the nozzle engagement hole 41 in the holder plate 43 is a plurality of bolts or the like. It is fixed by a fixing tool 47. The nozzle pressing plate 45 has a large-diameter attaching / detaching hole 49A for attaching / detaching the nozzle 23 to / from the nozzle engaging hole 41 of the holder plate 43, and a circumferential groove or a protrusion formed in the nozzle 23. A small-diameter nozzle locking hole 49B that connects a locking portion (not shown) to prevent the nozzle 23 from escaping from the nozzle engagement hole 41 is provided in a connected manner.

  With the above configuration, the nozzle 23 is engaged (fitted) with the nozzle engagement hole 41 of the holder plate 45 through the attachment / detachment hole 49 </ b> A in the nozzle pressing plate 45. Then, by moving the nozzle 23 to the position of the nozzle locking hole portion 49B, the locking portion such as a circumferential groove provided in the nozzle 23 can be locked to the inner peripheral edge of the nozzle locking hole portion 49B. . Therefore, the nozzle 23 can be prevented from coming out of the nozzle holder 25. Contrary to the above, the nozzle 23 can be taken out from the nozzle holder 25 by moving the nozzle 23 from the nozzle locking hole 49B to the position of the attaching / detaching hole 49A.

  As shown in FIG. 2, on the inner end side of the horizontal support portion 21A in the support bracket 21, an open / close cover 51 that can cover the top of the plurality of nozzles 23 supported by the horizontal support portion 21A is a vertical pivot. It is provided so as to be horizontally rotatable via (not shown). An appropriate opening / closing actuator 53 such as a fluid cylinder is provided between the base bracket 19 and the opening / closing cover 51 in order to open / close the opening / closing cover 51.

  More specifically, as shown in FIG. 4, the opening / closing cover 51 is provided with a rotation base 55 that is horizontally swung (rotated) by the opening / closing actuator 53. The rotation base 55 is provided with a plurality of openings 57 corresponding to the respective nozzle holders 25. When the opening / closing cover 51 is closed to cover the top of each nozzle 23 held by each nozzle holder 25, the opening 57 contacts the top of each nozzle 23 and swings in the vertical direction. A swing member 59 is provided so as to swing up and down via a horizontal pivot (not shown). In addition, an appropriate sensor 61 such as a proximity sensor for detecting the presence or absence of the nozzle 23 by detecting the vertical swing of each swing member 59 at a position close to each opening 57. Is provided.

  2 and 3, when the swinging member 59 comes into contact with the upper end portion of the nozzle 23 held by each nozzle holder 25 when the opening / closing cover 51 is closed from the opened state, as shown in FIGS. Each swing member 59 swings upward. Then, the upward swing of each swing member 59 is detected by each sensor 61, and the presence or absence of the slip 23 at the position corresponding to each swing member 59 is detected. In other words, it is possible to detect the empty nozzle holder 25 and the nozzle holder 25 including the nozzle 23 to be replaced when the nozzle 23 is attached to and detached from the laser processing head 9.

  In the configuration as described above, the edge of the workpiece in the Y-axis direction is clamped by the workpiece clamp provided on the carriage 15 in the workpiece movement positioning device 11, the workpiece is moved and positioned in the X and Y-axis directions, punching, laser When processing, the upper part of the plurality of nozzles 23 held by the nozzle holder 17 is covered with the opening / closing cover 51. Therefore, the nozzle 23 can be protected from the case where oil mist is used at the time of punching or from the scattering of sputtering or the like at the time of laser processing.

  When the nozzle 23 is attached to or detached from the laser machining head 9, the carriage 15 in the workpiece movement positioning device 11 is moved in the X-axis direction, and a nozzle holder unit provided at one end of the carriage 15. 17 is positioned at a position corresponding to the Y-axis direction with respect to the laser processing head 9 and the opening / closing cover 51 is opened. When the laser processing head 9 includes the nozzle 23, the laser processing head 9 is moved and positioned relative to the empty nozzle holder 25.

  Then, the nozzle 23 provided in the laser processing head 9 is engaged with the nozzle engagement hole 41 of the holder plate 43 through the attachment / detachment hole portion 49 </ b> A of the nozzle pressing plate 45 in the empty nozzle holder 25. Thereafter, the laser processing head 9 is moved relatively slightly in the direction of the nozzle locking hole 49B of the nozzle pressing plate 45, and the nozzle 23 is locked so as not to be detached from the holder plate 43, and the laser processing head 9 is raised. Then, the nozzle 23 is removed.

  Thereafter, the laser processing head 9 is relatively moved to an upper position of the nozzle holder 25 holding the nozzle 23 to be replaced, and the laser processing head 9 is lowered to attach the nozzle 23 to the laser processing head 9. Then, the laser processing head 9 is moved relatively from the nozzle locking hole portion 49B side of the nozzle holder 25 to the attachment / detachment hole portion 49A side, and the laser processing head 9 is raised, A separate nozzle 23 is attached.

  As described above, when the nozzle 9 is attached to and detached from the laser processing head 9, the holder plate 43 having the nozzle locking holes 41 is moved in the Y-axis direction by the support members 39 such as a plurality of elastic members 37 and balls. Since the laser processing head 9 is supported so as to move freely, it can absorb and relieve shock when the laser processing head 9 moves up and down, and the Y axis between the attachment / detachment hole 49A and the nozzle locking hole 49B in the nozzle plate 45 can be absorbed. The nozzle 23 can be moved smoothly in the direction.

  In the above configuration, since the nozzle holder unit 17 is provided at the end of the carriage 15 on the X axis direction change side of the laser processing position with respect to the punching processing position, the configuration of the conventional workpiece movement positioning device 11 is provided. Can be easily implemented using the above. That is, the nozzle holder unit 17 can be retrofitted to a conventional laser processing machine. The nozzle holder unit 17 is provided at the end of the carriage 15 so that it does not interfere with the punching die during punching.

  By the way, the nozzle holder unit 17 can be provided on the same surface as the work clamp mounting surface provided in the carriage 15. In this case, in order to avoid interference between the work clamped by the work clamp and the nozzle holder unit 17, it is necessary to increase the protrusion length of the work clamp, which is desirable in order to save space. is not. Further, in order to avoid interference between the work clamp and the nozzle holder unit 17, there is a problem that the degree of freedom of the work clamp mounting position is limited, which is not desirable.

DESCRIPTION OF SYMBOLS 1 Laser processing machine 3 Work table 9 Laser processing head 11 Work movement positioning apparatus 13 Carriage base 15 Carriage 17 Nozzle holder unit 19 Base bracket 21 Support bracket 21A Horizontal support part 23 Nozzle 25 Nozzle holder 29 Holder block 41 Nozzle engagement hole 43 Holder Plate 45 Nozzle pressing plate 49A Attaching / detaching hole 49B Nozzle locking hole 51 Opening / closing cover 55 Turning base 57 Opening 59 Swing member 61 Sensor

Claims (5)

  A laser processing head that performs laser processing of a plate-shaped workpiece placed on the work table is provided above the work table, and the workpiece is moved and positioned relative to the laser processing head in the X and Y axis directions. A laser processing machine equipped with a flexible workpiece movement positioning device, wherein a carriage having a plurality of workpiece clamps capable of clamping the edge in the Y-axis direction of the workpiece is moved to the workpiece movement positioning device in the X-axis direction. A laser processing machine comprising a nozzle holder unit that is freely provided and detachably provided with a plurality of nozzles that can be attached to and detached from the laser processing head at an end in the X-axis direction of the carriage. .   2. The laser beam machine according to claim 1, further comprising an openable / closable cover that covers a plurality of nozzles provided in the nozzle holder unit.   3. The laser beam machine according to claim 2, wherein the opening / closing cover includes a sensor for detecting presence / absence of a nozzle provided in the nozzle holder unit.   4. The laser beam machine according to claim 1, wherein the nozzle holder unit includes a nozzle drop prevention means for preventing the nozzle from falling off.   5. The laser processing machine according to claim 1, further comprising a punch die holder provided with a punch die for punching the workpiece, and a die die cooperating with the punch die. A die die holder, the punch die, the laser processing head at a position changed in the X-axis direction with respect to a punching processing position by the die die, and the nozzle holder unit includes the laser processing head of the laser processing head. A laser processing machine provided at an end portion in the X-axis direction of the carriage on the transformation side.

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