JP2016112593A - Nozzle replacement method in laser punch complex machine and laser punch complex machine as well as laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detachable replacement method of a nozzle in which a detachable replacement of the nozzle is performed to a laser machining head in the punching, and provide a laser punch complex machine.SOLUTION: A laser nozzle replacement method in a laser punch complex machine performs a detachable replacement of a nozzle 45 between a laser machining head 9 and a nozzle holder 47 by closely moving a nozzle holder 47 holding a nozzle 45 to be replaced in an upper position of a path line of a workpiece relatively to a laser machining head 9 in the laser beam machine, in the punching to a plate-like workpiece W or the punching to the workpiece W and in the resting of the laser machining in a punching machine. The nozzle holder 47 relatively enters a lower position of the laser machining head 9 and relatively moves up and down, and thereby performs the detachable replacement of the nozzle 45.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a nozzle exchanging method for exchanging nozzles with respect to a laser processing head in a laser / punch combined processing machine that performs laser processing and punching on a plate-like workpiece, and a laser / punch combined processing machine. More specifically, a nozzle exchanging method capable of exchanging nozzles with respect to a laser machining head during punching of a workpiece, a laser / punch combined processing machine, and a laser capable of exchanging nozzles above a work table It relates to processing machines.

  Punching (punching) is performed on plate-like workpieces such as metal plates. For example, in a punch press such as a turret punch press, the punch and die are exchanged as a setup operation before punching the workpiece. There are things to do. Further, in the laser processing machine, the nozzles provided in the laser processing head are exchanged according to differences in the work material, plate thickness, laser processing method, and the like. Further, in the laser processing machine, the nozzle is replaced when spatter or the like adheres to the nozzle tip, or when the nozzle tip burns out by reflected light from the laser processing position.

  Incidentally, even in a laser / punch combined processing machine in which a punch press and a laser processing machine are combined, it is necessary to attach and detach the nozzle to and from the laser processing head. Therefore, it is possible to combine the punch press and the laser processing machine so that the nozzle is attached to and detached from the laser processing head. However, a laser processing machine generally has a configuration in which a nozzle replacement device is provided below the laser processing head (see, for example, Patent Documents 1, 2, and 3).

JP 2006-263765 A JP 2008-307550 A JP 2009-166236 A

  When the laser processing machine and the punch press as described in Patent Documents 1 to 3 are combined, the nozzles are exchanged by a nozzle exchanging device disposed at a lower position with respect to the laser processing head. In this case, when exchanging nozzles with respect to the laser processing head, it is necessary to stop punching by moving the workpiece. That is, at the time of replacing the nozzle, it is necessary to stop both the laser processing and the punch processing for the workpiece. Further, in the conventional laser processing machine, when the nozzle is replaced, it is necessary to largely move the processing head to the nozzle replacement position. In some cases, it is necessary to retract the workpiece from the nozzle replacement position.

  Therefore, there is a problem that the machining efficiency of the workpiece is lowered.

  The present invention has been made in view of the above-described problems, and is a laser nozzle replacement method in a laser / punch combined processing machine, in a punching machine for punching a plate-like workpiece, or for punching a workpiece. When the laser processing is stopped, the nozzle holder holding the replacement nozzle is moved relatively closer to the laser processing head in the laser processing machine at a position above the pass line of the workpiece, and the laser processing head and the nozzle holder are moved. The nozzle is attached and detached between the nozzles and the nozzles.

  Further, in the nozzle replacement method, the nozzle holder relatively moves into a lower position of the laser processing head and relatively moves up and down to replace and replace the nozzle.

  Further, in the laser / punch combined processing machine, an exchange nozzle that is attached to and detached from the laser processing head is held above the pass line of the plate-like workpiece processed by the laser / punch combined processing machine. A nozzle holder is provided, and the nozzle holder can be moved in a direction relatively approaching and moving away from the laser processing head, and the nozzle holder can be relatively positioned at an exchange position for exchanging the nozzle. It is characterized by having.

  Further, in the laser / punch combined processing machine, the nozzle holder is provided so as to be able to enter a lower position of the laser processing head and move up and down relatively.

  The laser / punch combined processing machine further includes a workpiece movement positioning device capable of moving and positioning the workpiece in the X and Y axis directions with respect to the laser processing position and the punching position, and the nozzle holder includes the workpiece movement positioning device. In order to avoid interference with the workpiece, it can be raised higher than the workpiece movement positioning device.

  Further, the laser processing machine includes a nozzle holder that holds an exchange nozzle that is attached to and detached from the laser processing head at a position above a pass line of a plate-like workpiece processed by the laser processing machine. A holder is movably provided in a direction that is relatively close to and away from the laser processing head, and the nozzle holder is provided at a replacement position for performing nozzle replacement so that the nozzle holder can be relatively positioned. It is what.

  According to the present invention, the nozzle can be exchanged with respect to the laser processing head even when the workpiece is punched by a punch press. Therefore, the efficiency of the laser / punch combined processing machine can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective explanatory view conceptually and schematically showing an overall configuration of a laser / punch combined processing machine according to an embodiment of the present invention. It is perspective explanatory drawing of the operation | movement which attaches or detaches and replaces a nozzle with respect to a laser processing head. It is front explanatory drawing of the operation | movement which attaches or detaches and replaces a nozzle with respect to a laser processing head. It is a perspective explanatory view of a casing and a nozzle holder. It is a perspective explanatory view of a nozzle holder.

  As conceptually and schematically shown in FIG. 1, a laser / punch combined processing machine 1 according to an embodiment of the present invention includes a frame 3 that serves as a frame of a punch processing machine and a laser processing machine. The frame 3 includes a lower frame 3L that is long in the front-rear direction (Y-axis direction), and an upper frame 3U is integrally provided above the lower frame 3L via a column 3C. That is, the frame 3 is formed in an annular shape, and a hollow portion 5 penetrating in the left-right direction (X-axis direction) is provided between the upper and lower frames 3U, 3L. Note that the configuration of the frame 3 is not limited to an annular shape, and may be a C-shaped frame.

  In the hollow portion 5, upper and lower turrets 7 U and 7 L are provided so as to be vertically rotatable facing the upper and lower sides. The upper turret 7U supports a plurality of upper molds (punches) for punching the plate-like workpiece W in a detachable and replaceable manner, and is rotatably provided at the lower portion of the upper frame 3U. The lower turret 7L supports a plurality of lower molds (dies) corresponding to the upper molds in a detachable and replaceable manner, and is rotatably provided on the upper part of the lower frame 3L.

  The upper and lower turrets 7U and 7L are rotated synchronously by a servo motor (not shown), and the punch and die for punching the plate-like workpiece W are punching positions for punching the workpiece W. Indexing and positioning are possible. The upper frame 3U is provided with a striker (ram) that can freely press and punch a punch that is indexed and positioned at a punching position. Therefore, after the workpiece W is positioned with respect to the punching position, the punch is pressed by the striker, whereby the workpiece W is punched by the punch and die at the punching position.

  The punch press (punch press having a configuration including the upper and lower turrets 7U and 7L and the striker) in the laser / punch combined processing machine 1 has a well-known configuration. Description is omitted.

  In order to perform laser processing on the workpiece W, a laser processing head 9 is provided on the upper frame 3U so as to be movable in the Y axis direction and movable up and down. That is, the upper frame 3U is provided with a front-rear direction guide rail 11 (see FIG. 3), and the guide rail 11 is provided with a front-rear slider 13 so as to be movable. The front / rear slider 13 is provided with an upper / lower slider 15 that can move up and down. The upper / lower slider 15 is provided with the laser processing head 9.

  The back-and-forth movement of the back-and-forth slider 13 is moved back and forth by a ball screw (not shown) rotated by a servo motor 17 (see FIG. 1) mounted on the upper frame 3U. The vertical movement of the laser processing head 9 is moved up and down by the action of a ball screw 21 in the vertical direction rotated by a servo motor 19 provided in the front and rear slider 13. With the above configuration, when the height position of the laser processing head 9 with respect to the upper surface of the workpiece W is adjusted, the laser processing head 9 is moved in the front-rear direction, and the workpiece W is moved in the left-right direction, the workpiece W is moved from the laser processing head 9. The workpiece W is subjected to laser processing by irradiating a laser beam onto the workpiece.

  In the laser / punch combined processing machine, the configuration for moving and positioning the laser processing head 9 in the front-rear direction and the up-down direction is a well-known configuration. A more detailed description of the configuration is omitted.

  The laser / punch combined processing machine 1 is provided with a workpiece movement positioning device 23 for positioning the workpiece W relative to the punching position by the punch and die and the laser processing position by the laser processing head 9. The workpiece movement positioning device 23 has a well-known configuration, but will be described schematically. The workpiece movement positioning device 23 includes a carriage base 25 that is long in the left-right direction and is movable in the front-rear direction. The carriage base 25 is provided with a carriage 27 movably in the left-right direction. The carriage 27 is provided with a plurality of work clamps 29 capable of clamping one end edge of the work W in the front-rear direction. .

  The positioning of the carriage base 25 in the front-rear direction and the positioning of the carriage 27 in the left-right direction relative to the carriage base 25 are performed by a ball screw mechanism or a linear motor rotated by a servo motor (not shown). . Since this type of configuration is already known, a more detailed description of the configuration of the workpiece movement positioning device 23 is omitted.

  As already understood, one end edge of the workpiece W on the workpiece table 31 is clamped by a workpiece clamp 29 in the workpiece movement positioning device 23, and the workpiece W is moved and positioned with respect to the punching position, thereby punching. The workpiece W can be punched by the punch and die indexed and positioned at the positions. In addition, when the laser processing head 9 is moved and positioned in the front-rear direction, and the workpiece W is moved and positioned in the left-right direction, laser processing of the workpiece W is performed by irradiating the workpiece W with laser light. Is done.

  In the above configuration, when the workpiece W is moved and positioned with respect to the punching position and the workpiece W is punched, when the nozzle is attached to or detached from the laser processing head 9, the above-mentioned Patent Documents 1 to 3 are used. As described above, in the configuration in which the nozzle changing device is provided at the lower position of the laser processing head 9, it is impossible to attach and detach the nozzle of the laser processing head 9 due to the presence of the work W on the work table 31. .

  Therefore, in the present embodiment, when the workpiece W is punched (when the workpiece W is to be punched), the position above the work table 31 is set so that the nozzle can be attached to and detached from the laser machining head 9. The nozzle changing device 33 is provided.

  More specifically, at the position corresponding to the movement path of the laser processing head 9 in the Y-axis direction and close to the upper and lower turrets 7U and 7L, the upper frame 3U is moved in the X-axis direction. A fixed beam 35 protruding horizontally is fixed. A vertical guide beam 37 is integrally fixed to the distal end portion of the fixed beam 35, and the guide beam 37 is provided with a vertical guide member 39 (see FIG. 3).

  In the guide member 39, a vertical slider 41, which is moved up and down by an appropriate vertical movement actuator (not shown) such as a linear motor, a fluid pressure cylinder, a ball screw mechanism or the like provided in the guide beam 37, is guided and supported. Has been. A casing 43 projecting in the direction of the laser processing head 9 is integrally provided below the upper and lower sliders 41. In the casing 43, a nozzle holder 47 for detachably supporting a plurality of nozzles 45 (only one is shown in FIGS. 4 and 5) to be attached to and detached from the laser processing head 9 is provided in the X-axis direction, that is, the laser. It is provided so as to be movable in a direction approaching and separating from the processing head 9.

  More specifically, as shown in FIG. 5, a guide member 51 in the X-axis direction is provided on the floor member 49 in the casing 43, and the nozzle holder 47 is movably guided to the guide member 51. It is supported. In order to reciprocate the nozzle holder 47 along the guide member 51, the floor member 49 is provided with a reciprocating actuator 53 such as a fluid pressure cylinder. For example, a reciprocating rod 55 such as a piston rod is connected to the nozzle holder 47.

  With the above configuration, the nozzle holder 47 is operated to project and retract with respect to the casing 43 by operating the reciprocating actuator 53. When the nozzle holder 47 is drawn into the housing 43 by the pull-in operation, a plate-like closing member 57 is provided at the tip of the nozzle holder 47 in order to close the opening (not shown) of the housing 43. Is provided. A plurality of nozzle support members 59 for detachably supporting the nozzle 45 are arranged linearly in the Y-axis direction in the vicinity of the tip of the nozzle holder 47 adjacent to the closing member 57.

  Further, the nozzle holder 47 is for cleaning the tip (lower end) of the nozzle 45 mounted on the laser processing head 9 at a side position in the Y-axis direction close to the nozzle support member 59. A brush 61 is provided. A calibration plate 63 is provided at a side position in the Y-axis direction close to the brush 61 so that the tip of the nozzle 45 attached to the laser processing head 9 can be contacted.

  Accordingly, the brush 61 is brought into contact with the lower end portion of the nozzle 45 attached to the laser processing head 9 and the brush 61 is moved relative to the nozzle 45 in the X and Y axis directions, so that the lower end portion of the nozzle 45 is moved. Cleaning can be performed. Further, the lower end portion of the nozzle 45 provided in the laser processing head 9 is set in contact with the upper surface of the calibration plate 61 or set at a preset proximity position, and the proximity sensor provided at the lower end portion of the nozzle 45 is provided. The detected value can be calibrated.

  By the way, in the above configuration, when the vertical slider 41 is moved up and down and the vertical slider 41 is moved up to the maximum, the casing 43 is shown in phantom lines in FIGS. 1 and 2 in order to avoid interference with the workpiece movement positioning device 23. As shown by the above, the workpiece movement positioning device 23 is located at a higher position. Therefore, when the workpiece W is clamped by the workpiece clamp 29 provided in the workpiece movement positioning device 23 and moved and positioned in the X and Y axis directions with respect to the punching position, the workpiece movement positioning device is used. Even when 23 is close to the upper and lower turrets 7U and 7L, the workpiece movement positioning device 23 and the casing 43 do not interfere with each other.

  By the way, the structure which attaches / detaches the nozzle 45 with respect to the said laser processing head 9 can employ | adopt various structures, as described in the said patent documents 1-3. In this embodiment, since a known configuration such as a ball chuck or a collet chuck shown in FIG. 25 in Patent Document 1 is adopted, details of a configuration in which the nozzle 47 is attached to and detached from the laser processing head. The detailed explanation is omitted.

  As described above, when the workpiece W on the work table 31 is positioned with respect to the punching position and punching is performed on the workpiece W (while the workpiece W is being punched) In this case, the nozzle 45 is attached to and detached from the laser processing head 9 as follows.

  That is, as shown in FIG. 1, for example, when the workpiece movement positioning device 23 is in a state of being separated from the upper and lower turrets 7U and 7L in the Y-axis direction (not necessarily separated), the laser processing head 9 Is moved and positioned at a position corresponding to the nozzle changing device 33. On the other hand, in the nozzle replacement device 33, the casing 43 is lowered and the nozzle holder 47 is operated to project to a position below the laser processing head 9. The laser processing head 9 is relatively moved and positioned above the empty nozzle support member 59 in the nozzle holder 47, and the nozzle 45 mounted on the laser processing head 9 is supported by the empty nozzle support member 59. To do. Then, the nozzle 45 is detached from the chuck in the laser processing head 9.

  Before the nozzle 45 is detached, the brush 61 is brought into contact with the lower end portion of the nozzle 45 attached to the laser processing head 9, and the brush 61 is moved relative to the nozzle 45 in the X and Y axis directions. If necessary, the lower end of the nozzle 45 can be cleaned.

  Thereafter, the laser processing head 9 is relatively positioned above the nozzle support member 59 that supports the nozzle 45 to be replaced supported by the nozzle holder 47. Then, the laser machining head 9 is lowered or the nozzle holder 47 is raised, and the nozzle 45 to be replaced is mounted on the laser machining head 9. As described above, after the separate nozzle 45 is mounted on the laser processing head 9, the nozzle holder 47 is pulled into the casing 43 and returned to the initial raised position.

  After the nozzle is mounted, the lower end portion of the nozzle 45 provided in the laser processing head 9 is set in contact with the upper surface of the calibration plate 61 or set at a preset proximity position to be provided at the lower end portion of the nozzle 45. Calibrate the detection value of the proximity sensor.

  As described above, when the nozzle holder 47 is drawn into the casing 43, the closing member 57 provided in the nozzle holder 47 closes the opening of the casing 43. Therefore, the inside of the casing 43 is prevented from being contaminated by, for example, oil mist supplied to the punch.

  As understood from the above description, according to the present embodiment, the laser processing head 9 in the laser processing machine is used for punching the workpiece W by the punch and die provided in the upper and lower turrets 7U and 7L in the punch processing machine. In contrast, the nozzle 45 can be attached and detached. Therefore, when laser cutting is performed after punching the workpiece W, it is possible to smoothly shift to laser cutting without replacing the nozzle 45 again. Therefore, when laser cutting is performed following punching of the workpiece W, laser cutting can be efficiently performed.

  The present invention is not limited to the embodiment described above, and can be implemented in other forms by making appropriate changes. For example, the nozzle holder 47 is formed in a fan shape, and is provided horizontally below the upper and lower sliders 41 so as to be freely rotatable. By rotating the fan-shaped nozzle holder 47, the lower side of the laser processing head 9 is provided. It is also possible to adopt a configuration that allows the user to freely enter and exit. In addition, the nozzle holder 47 is formed in a disc shape and is provided horizontally below the upper and lower sliders 41 so as to be freely rotatable. An ATC arm (corresponding to a second nozzle holder) for attaching and detaching the nozzle 45 between the disk-shaped nozzle holder 47 and the laser processing head 9 is provided on the frame so as to be rotatable and vertically movable. A configuration is also possible.

  Further, the nozzle changing device 33 can be moved in the Y-axis direction so that the nozzle 45 can be attached to and detached from the laser processing head 9 at a desired replacement position in the Y-axis direction. is there.

  In the above description, the case of the laser / punch combined processing machine has been described. However, it is also possible to open and close the nozzle changing device 33 and exchange the nozzle 45 with respect to the laser processing head 9 in the laser processing machine.

  In this case, a nozzle holder 47 holding an exchange nozzle 45 that is attached to and detached from the laser processing head 9 is provided above the pass line of the plate-like workpiece W processed by the laser processing machine. If the nozzle holder 49 is provided so as to be relatively movable relative to the laser machining head 9 and the nozzle holder 49 is relatively positioned at an exchange position for exchanging the nozzle. It ’s good.

DESCRIPTION OF SYMBOLS 1 Laser punch combined processing machine 7U Upper turret 7L Lower turret 9 Laser processing head 23 Work movement positioning device 25 Carriage base 29 Work clamp 31 Work table 33 Nozzle exchange device 41 Vertical slider 43 Casing 45 Nozzle 47 Nozzle holder 49 Floor member 57 Closure Member 59 Nozzle support member

Claims (6)

  A laser nozzle replacement method in a laser / punch combined processing machine for punching a plate-like workpiece in a punching machine, or during a punching and laser processing pause for a workpiece, to a laser processing head in a laser processing machine The laser is characterized in that, at a position above the pass line of the workpiece, the nozzle holder holding the replacement nozzle is moved relatively closer to perform attachment / detachment replacement of the nozzle between the laser processing head and the nozzle holder.・ Nozzle replacement method for punch combined processing machines.   2. The laser replacement method according to claim 1, wherein the nozzle holder relatively moves into a lower position of the laser processing head and moves up and down relatively to replace the nozzle. Nozzle replacement method for punch composite processing machines.   A laser / punch combined processing machine having a nozzle holder that holds an exchange nozzle that is attached to and detached from a laser processing head at a position above a pass line of a plate-like workpiece processed by the laser / punch combined processing machine. The nozzle holder is movably provided in a direction that is relatively close to and away from the laser processing head, and the nozzle holder is relatively positioned at an exchange position for exchanging the nozzle. A combined laser / punch machine.   4. The laser / punch combined processing machine according to claim 3, wherein the nozzle holder is provided so as to be relatively movable into a lower position of the laser machining head and relatively movable up and down.・ Punch combined processing machine.   The laser / punch combined processing machine according to claim 3 or 4, further comprising a workpiece movement positioning device capable of moving and positioning the workpiece in the X and Y axis directions with respect to the laser processing position and the punch processing position, and the nozzle holder includes: In order to avoid interference with the workpiece movement positioning device, the laser / punch combined processing machine can be raised higher than the workpiece movement positioning device. A laser processing machine comprising a nozzle holder that holds an exchange nozzle that is attached to and detached from a laser processing head at a position above a pass line of a plate-like workpiece processed by the laser processing machine. The nozzle holder is movably provided in a direction that is relatively close to and away from the laser processing head, and the nozzle holder is provided at a replacement position for exchanging the nozzle so as to be relatively positionable. Laser processing machine.