JP2017170450A - Laser processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser processing apparatus capable of suppressing runout during rotation by always keeping the vertical distance between a support table and a work substantially constant even when the work has a non-circular cross-sectional shape such as a square pipe. offer. A laser processing device including a conveyor device 13 that supports a product WG after laser processing, and the conveyor device 13 includes a main body frame 145 arranged on the other side of the laser processing position. The main body frame 145 is provided with a support table 149 capable of supporting the processed product WG processed at the laser processing position so as to be movable and vertically movable in a direction approaching and separating from the laser processing position. The vertical position of the support table 149 is adjusted according to the rotation angle of the deformed material when laser machining is performed while rotating the deformed material having a non-circular cross-sectional shape around the axis in the longitudinal direction. It is a configuration. [Selection diagram] FIG. 27

Description

  The present invention relates to a laser processing apparatus that performs laser processing of a long workpiece such as a pipe material or an angle material. More specifically, for example, a long material (workpiece) having a non-circular cross-sectional shape such as a square pipe or an angle material is supported in a cantilever manner when laser processing is performed by rotating it around the longitudinal axis. The present invention relates to a laser processing apparatus having a function of suppressing the vibration on the tip side of a workpiece to be processed.

  For example, when carrying out laser processing of long materials (workpieces) such as pipe materials and angle materials, a workpiece carry-in device for carrying workpieces to the laser machining position is provided on one side of the laser machining position by the laser machining head. ing. And when performing laser processing of the work carried in, laser processing is performed by supporting the work in a cantilever manner or holding the work by a chuck device provided on the other side of the laser processing position ( For example, see Patent Documents 1 and 2).

JP 2001-87885 A JP 2008-302375 A

  Laser processing may be performed while rotating a long workpiece around a longitudinal axis. In this case, if the workpiece is supported in a cantilever manner, there is a problem that the tip end side of the workpiece is likely to be shaken. Accordingly, as described in Patent Documents 1 and 2, the tip side of the workpiece can be suppressed by supporting the tip side of the workpiece by the chuck device. However, in this case, after the workpiece is laser processed, it is necessary to remove the tip side of the workpiece after removing it from the chuck device. Therefore, there is a problem that it takes time to discharge the workpiece after the laser processing is completed.

The present invention has been made in view of the above-described problems, and includes a workpiece loading device that loads a long workpiece with respect to the laser machining position on one side of the laser machining position by the laser machining head, A laser processing apparatus provided with a conveyor device for supporting a product after laser processing on the other side of the laser processing position,
The conveyor device includes a main body frame disposed on the other side of the laser processing position, and a support table capable of supporting a processed product processed at the laser processing position is provided on the main body frame. The support table can be moved in the direction of approaching and moving away and can be moved up and down, and the support table performs laser processing while rotating a deformed material having a non-circular cross-section around the longitudinal axis. The vertical position is adjusted according to the rotation angle of the deformed material.

  Further, in the laser processing apparatus, the support table includes a pair of steady rests capable of sandwiching the workpiece from a direction orthogonal to the longitudinal direction of the workpiece in order to suppress the deflection due to the rotation of the workpiece during laser machining of the workpiece. The members are provided so as to be able to approach and separate from each other.

  Further, in the laser processing apparatus, a pair of product clamps capable of clamping a product is provided in the vicinity of an end of the support table on the laser processing position side so as to be able to approach and separate from each other.

  Further, in the laser processing apparatus, a guide frame parallel to the moving direction of the support table is provided at a position close to the support table, and the product on the support table is attached to a slider provided movably on the guide frame. And a product moving member for moving in a direction away from the laser processing position, and the product moving member is provided so as to be movable in and out of the product support surface of the support table. .

  Further, in the laser processing apparatus, a work shooter that can freely enter and exit between the main body frame and the laser processing position in the conveyor device, and a product box that can store a product or scrap dropped from the work shooter, It is provided at a position close to the work shooter.

  Further, in the laser processing apparatus, the work shooter is provided so as to be movable to a position corresponding to the product box and tiltable to drop a product or scrap.

  Further, the laser processing apparatus includes a carry-out conveyor that supports the product so as to be transportable downstream, on the opposite side of the laser machining position with the conveyor device in between, and moves up and down the roller unit in the carry-out conveyor. A pantograph mechanism is provided, and a slider which is reciprocally movable to move the pantograph mechanism up and down and a lower end portion of an operation link in the pantograph mechanism are interlocked and connected via a buffer means. It is.

  Further, in the laser processing apparatus, the buffer means is constituted by an air damper having a piston rod that can be freely moved in and out.

  According to the present invention, when laser processing is performed by rotating a deformed material having a non-circular cross section around the longitudinal axis, the support table that supports the tip side of the work is provided with the rotation angle of the work (rotation position). ), The vertical position is adjusted. Therefore, it is possible to suppress the bending due to the dead weight on the tip side of the workpiece, and it is possible to suppress the shake at the time of rotation around the axis of the workpiece.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a case where the present invention is applied to a laser processing system that performs laser processing of a long material such as a round pipe or a square pipe, and is a perspective view conceptually and schematically showing the overall configuration of the laser processing system. FIG. FIGS. 2A and 2B are plan views and FIG. 2B are front views, respectively, showing a state in which the optical sensor is retracted. FIG. It is explanatory drawing shown. FIG. 3 shows a state in which the optical sensor is projected in the chuck device shown in FIG. 2, FIG. 3 (A) is a plan view, and FIG. 3 (B) is a front view. It is side explanatory drawing which showed notionally and schematically the whole structure of the workpiece conveyance conveyor in a workpiece conveyance apparatus. It is explanatory drawing in the case of supporting a round pipe by the structure of the conveyance chain in a workpiece | work conveyance conveyor, and a conveyance chain. It is explanatory drawing in the case of supporting a square pipe with a conveyance chain. It is explanatory drawing which shows the structure of the workpiece | work support part which lifts and conveys a workpiece | work from a workpiece conveyance conveyor. It is perspective explanatory drawing which showed the positional relationship of a chuck | zipper apparatus and a workpiece | work support apparatus seeing from the Y-axis direction rear side. FIG. 9A is a perspective view of the work support device, in which FIG. 9A shows a state in which the work receiving portion of the work support device protrudes into the work carry-in path, and FIG. It is explanatory drawing which shows the state pulled in from. FIG. 10A is a perspective view showing a clamp member and a steady member in the work support device, and FIG. 10A shows a state where the clamp member is opened and the steady member is raised higher than the support roller. FIG. 10B shows a state in which the clamp member is closed and the steadying member is lowered below the support roller. It is an operation explanatory view showing a case where a work is conveyed to a work carry-in way by a work conveyance conveyor of a work conveyance device, and a work conveyance conveyor is shown notionally and schematically. FIG. 11A shows a state in which the workpiece on the workpiece conveyance conveyor is supported at a position far from the workpiece loading path, and FIG. 11B shows a state in which the workpiece is lifted and conveyed from the workpiece conveyance conveyor. ing. FIG. 12A is a diagram illustrating a case where a workpiece is transferred from the workpiece support unit of the workpiece conveyor to the workpiece support device. FIG. 12A illustrates a state immediately before the workpiece is transferred, and FIG. The state which hold | gripped the rear-end part of the workpiece | work with the chuck device is shown. FIG. 13A is a diagram illustrating a case where the workpiece is pushed to the laser processing machine by the chuck device. FIG. 13A shows a state in which the workpiece support device close to the chuck device is retracted from the workpiece carry-in path, and FIG. FIG. 4 shows a state where all work support devices are retracted from the work carry-in path. FIG. 14A is an explanatory diagram in the case where the workpiece is pushed to the laser processing machine by the chuck device and the intermediate position of the workpiece is supported by the workpiece support device. FIG. 14B is a diagram in which the chuck device performs laser processing. It is explanatory drawing which shows the state which approached the machine and the work support moved to the laser processing machine side most. Further, when the chuck device is close to the laser processing machine, the work support device is sequentially retracted from the work carry-in path. FIG. 16A is an explanatory view of a configuration for detecting the tip of a workpiece in a laser processing machine, FIG. 16A is a perspective explanatory view showing a positional relationship between a laser beam and a rotating chuck, and FIG. FIG. It is perspective explanatory drawing which shows the positional relationship of a laser beam machine, a work shooter, a product box, a conveyor apparatus, a work pusher apparatus, and a carry-out conveyor. It is perspective explanatory drawing which shows the positional relationship of a laser beam machine, a work shooter, and a product box. It is perspective explanatory drawing which shows the state which the work shooter received the product. It is perspective explanatory drawing which shows the state which drops a product from a work shooter to a product box. It is an isometric view explanatory drawing which shows the structure of a work shooter. It is an isometric view explanatory drawing which shows the whole structure of a conveyor apparatus. It is an isometric view explanatory drawing which shows the structure of the steadying member etc. which were provided in the conveyor apparatus. It is front explanatory drawing which shows the relationship between a laser beam machine and a conveyor apparatus, and shows the state in which the support table in a conveyor apparatus is located on a main body frame. It is front explanatory drawing which shows the state which the support table in a conveyor apparatus moved to the laser processing machine side. FIG. 25A shows the vertical movement position of the table when the square pipe is rotated about its axis. FIG. 25A is an explanatory diagram of each corner of the square pipe, and FIG. It is explanatory drawing which shows the relationship between the up-and-down moving position in and rotation angle. FIG. 25C is an explanatory diagram showing the relationship between the rotation angle of the square pipe and the vertical movement position of the support table. It is explanatory drawing which shows the relationship between the circumscribed circle of a square pipe, and a steadying member. It is a perspective explanatory view showing the positional relationship between the conveyor device and the work pusher device. It is a perspective explanatory view showing a state just before pushing a product by a product moving member of a work pusher device. It is perspective explanatory drawing which shows the state which pushed the product with the product moving member. It is front explanatory drawing which shows the whole structure of a carrying-out conveyor. It is front explanatory drawing which shows the state which raised the raising / lowering frame in the carry-out conveyor. It is an isometric view explanatory drawing which shows the structure of the pantograph mechanism for moving up and down the raising / lowering frame in a conveyance conveyor.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. For example, a case where the present invention is applied to a laser processing apparatus as an example of a processing machine that processes a long workpiece such as a pipe material or an angle material will be described. A configuration of a laser processing apparatus that performs laser processing of a long workpiece is known as described in Patent Documents 1 and 2, for example. However, in order to facilitate understanding, first, an overall configuration of a laser processing apparatus (laser processing system) will be schematically described.

  As shown in FIG. 1, the laser processing apparatus 1 includes a laser processing machine 3. The processing machine main body 5 in the laser processing machine 3 includes a rotary chuck 7 that can rotate by gripping a long workpiece (not shown in FIG. 1) such as a pipe material or an angle material in the left-right direction (X-axis direction). ) Is provided so as to be rotatable around the axis. Further, the processing machine main body 5 is provided with a laser processing head 9 that is movable in the front-rear direction (Y-axis direction) and movable in the vertical direction (Z-axis direction). The laser processing head 9 performs laser processing of a workpiece by irradiating the workpiece, which is held by the rotary chuck 7 and rotated, with laser light.

  Since the configuration of the laser beam machine 3 as described above is already known as described in, for example, Patent Documents 1 and 2, detailed description of the overall configuration of the laser beam machine 3 is omitted. .

  On one side (right side in FIG. 1) of the X-axis direction (left and right direction) of the laser processing position by the laser processing head 9 in the laser processing machine 3, a long workpiece with respect to the laser processing position is arranged in the longitudinal direction. A work carry-in device 11 for carrying in is arranged. A conveyor device 13 that supports a long product (not shown in FIG. 1) after laser processing is provided on the other side (left side in FIG. 1) of the laser processing position in the X-axis direction.

  A work shooter 15 is provided between the laser processing position and the conveyor device 13 so as to be movable in the Y-axis direction (front-rear direction). The work shooter 15 supports a short product (not shown) processed at the laser processing position or scrap (not shown) to be discarded. In front of the work shooter 15 in the Y-axis direction, a product box 17 capable of storing a product or scrap dropped from the work shooter 15 is disposed.

  Further, an unloading conveyor 19 is provided on the other side of the laser processing position in the X-axis direction and on the opposite side of the laser processing position with the conveyor device 13 in between. The carry-out conveyor 19 serves to discharge the products transferred from the conveyor device 13, and a plurality of product stockers 21 are arranged on one side (front side) of the carry-out conveyor 19 in the Y-axis direction. They are provided at appropriate intervals in the axial direction.

  As can be understood from the above schematic description, a long workpiece is conveyed (transferred) from one end side to the other end side in the X-axis direction (longitudinal direction of the workpiece) by the workpiece carry-in device 11, and laser It is carried into the rotary chuck 7 in the processing machine 3. As described above, when the tip of the workpiece is carried into the rotary chuck 7 and the tip of the workpiece is appropriately projected from the laser processing position by the laser processing head 9 to the other end side in the X-axis direction, The workpiece is gripped by the rotating chuck 7.

  Then, the laser beam is irradiated from the laser processing head 9 to the workpiece, and the workpiece is rotated about the longitudinal axis (X-axis direction) by the chuck device 25 and the rotary chuck 7 described later. By moving in the axial direction, laser processing of the workpiece is performed. At this time, when the product cut and separated from the work is relatively short, the work shooter 15 is positioned at a position corresponding to the short product laser processed by the laser processing head 9, and the short product is processed by the work shooter 15. Is to receive. The product received by the work shooter 15 is dropped and stored in the product box 17.

  When the product is relatively long, the front end side of the workpiece protruding from the laser processing position to the other end side in the X-axis direction is supported by the conveyor device 13. Therefore, it is possible to suppress the tip side of the workpiece from being greatly bent by its own weight, and to suppress vibration during rotation around the axis of the workpiece. When a long product is cut and separated from the workpiece, the product is carried out from the conveyor device 13 onto the carry-out conveyor 19. The products on the carry-out conveyor 19 are dropped and carried onto a desired product stocker 21 and aligned on the product stocker 21.

  As can be understood from the schematic description as described above, in the present embodiment, the workpiece is moved (transferred) from one end side to the other end side in the X-axis direction. Therefore, when viewed in the moving direction of the workpiece, one end side in the X-axis direction can be referred to as an upstream side, and the other end side in the X-axis direction can be referred to as a downstream side.

  As shown in FIG. 1, the work carry-in device 11 includes a guide frame 23 that extends linearly from the processing machine body 5 in the laser processing machine 3 to one end side in the X-axis direction. The guide frame 23 constitutes a part of a work carry-in path P through which the work is carried in the X-axis direction with respect to the rotary chuck 7 in the laser processing machine 3. The guide frame 23 is provided with a chuck device 25 capable of gripping the rear end side, which is one end side of the workpiece in the X-axis direction, so as to be movable in the X-axis direction.

  The chuck device 25 is configured to be able to rotate by gripping the rear end portion of the workpiece and to be movable and positioned in a direction (X-axis direction) approaching and moving away from the rotary chuck 7 of the laser processing machine 3. Note that the axis (rotation center) in the X-axis direction in which the chuck device 25 grips and rotates the workpiece coincides with the axis (rotation center) of the rotary chuck 7 in the laser processing machine 3. Therefore, as described above, when the rotary chuck 7 grips and rotates the workpiece and performs laser processing on the workpiece, the chuck device 25 that supports (holds) the rear end portion of the workpiece has the rotation chuck 7. It is rotated in synchronization with.

  More specifically, the chuck device 25 includes a chuck body 27 (see FIG. 2) that is movable by being guided by a guide rail 23L in the X-axis direction provided in the guide frame 23. The chuck body 27 is provided with a rotating frame 29 that is rotatable around the axis in the X-axis direction. As shown in the plan view of FIG. 2A and the front view of FIG. 2B, the rotating frame 29 is horizontal on the other end surface side (the laser processing machine 3 side) of the chuck body 27 in the X-axis direction. It is provided so as to be freely rotatable around a central axis. The rotating frame 29 has a plurality of gripping claws (grip members) 31 that can grip the end (rear end) of the workpiece from four directions so as to be movable in a radial direction that approaches and separates from the rotation center. Is provided.

  In addition, the structure as described in the said patent document 1 or the structure as described in Unexamined-Japanese-Patent No. 2011-104642 can be employ | adopted for the structure to which the some holding | grip nail | claw 31 moves to a radial direction, for example. That is, since the configuration in which the plurality of gripping claws 31 move in the radial direction may be a known configuration, a detailed description of the configuration for moving the gripping claws 31 in the radial direction is omitted.

  The chuck body 27 in the chuck device 25 is provided with a traveling servo motor 33. The travel servomotor 33 serves to move and position the chuck device 25 in the X-axis direction along the guide rail 23L. That is, for example, a pinion (not shown) is interlocked and connected to the rotation shaft of the traveling servomotor 33. The pinion meshes with, for example, an X-axis rack (not shown) provided on the guide rail 23L.

  Therefore, by driving the traveling servo motor 33, the chuck device 25 can be moved in the X-axis direction. The moving position of the chuck device 25 from the reference position in the X-axis direction can be detected by position detecting means such as a rotary encoder provided in the traveling servomotor 33, for example. Therefore, the movement position of the chuck device 25 in the X-axis direction can be controlled by controlling the driving of the traveling servomotor 33 by a control device (not shown).

  Further, the chuck body 27 is equipped with a rotation servomotor 35 for rotating and positioning the rotating frame 29. A small-diameter gear (not shown) is interlocked and connected to the rotating shaft of the servomotor 35 for rotation, and the small-diameter gear meshes with a large-diameter gear (not shown) provided in the rotary frame 29. . Therefore, the rotation of the rotating frame 29 can be controlled by controlling the rotation of the servo motor 35 for rotation. As a configuration in which the rotation servo motor 35 and the rotation frame 29 are interlocked, a configuration using a timing belt can be used.

  By the way, the rotational position of the rotary frame 29 with respect to the rotational reference position can be detected by position detection means such as a rotary encoder provided in the servo motor 35 for rotation. Therefore, the rotational position of the rotating frame 29 can be controlled by rotationally driving the rotating servo motor 35 under the control of the control device.

  Further, the chuck body 27 in the chuck device 25 is provided with an optical sensor 37 for detecting a workpiece, and protects a movable cable connected to the traveling servo motor 33, the rotating servo motor 35, and the like. A cable protection chain 39 for supporting is connected.

  The optical sensor 37 is provided in such a direction that the optical axis passes through the rotation center position of the rotary frame 29. That is, in the present embodiment, a housing 41 that is long in the X-axis direction is provided on the side surface in the Y-axis direction of the chuck body 27 at the same height as the rotation center of the rotary frame 29. The housing 41 is provided with the optical sensor 37 movably in the X-axis direction.

  That is, the housing 41 is provided with a reciprocating actuator (not shown) such as an air cylinder, and the reciprocating member 43 (see FIG. 3) such as a piston rod provided in the reciprocating actuator. The optical sensor 37 is connected. The optical sensor 37 is integrally supported by the tip portions of a plurality of guide rods 45 that are horizontally movable in the housing 41 so as to move horizontally in the X-axis direction.

  With the above configuration, when the reciprocating actuator is operated, the optical sensor 37 is reciprocated in the X-axis direction at the same height position as the rotation center of the rotating frame 29. When the optical sensor 37 is moved so as to protrude from the housing 41, it moves to the other end side in the X-axis direction to a predetermined position beyond the gripping claws 31, as shown in FIG. Therefore, the presence or absence of the workpiece W can be detected by the optical sensor 37 at the predetermined position (projection position) moved so as to project.

  Here, when the optical sensor 37 is an optical distance sensor such as a laser distance sensor, the distance from the optical sensor 37 to the workpiece W can be detected. Therefore, in the state where the workpiece W is gripped by the gripping claws 31, the shape and dimensions of the workpiece W can be detected by detecting the distance from the optical sensor 37 to the workpiece W while rotating the rotary frame 29. It is.

  That is, it is possible to detect the shape and dimensions of the workpiece W before performing laser processing on the workpiece W, and confirm whether the workpiece W matches the vertical and horizontal dimensions described in the machining program. , Square, angle, channel, etc.).

  Further, when trying to grip one end of the workpiece W by the chuck device 25, as described above, the chuck device 25 is brought close to the end of the workpiece W in a state where the optical sensor 37 is positioned at the protruding position. When moved, the end of the workpiece W can be detected by the optical sensor 37. Accordingly, when the optical sensor 37 detects the end of the workpiece W during the movement of the chuck device 25 toward the workpiece W, the approaching operation of the chuck device 25 can be temporarily stopped. Therefore, the chuck device 25 can be prevented from inadvertently colliding with the workpiece W during the approaching operation of the chuck device 25 to the workpiece W, and can be reliably chucked with the claws, thereby improving safety.

  As shown in FIGS. 2A and 2B, when the optical sensor 37 is moved with respect to the housing 41, the optical sensor 37 is attached to the claw holder 31A holding the grip claw 31. It is positioned at the corresponding position (retraction position). Therefore, when the optical sensor 37 is an optical distance sensor, the distance from the optical sensor 37 to the claw holder 31A can be detected. Therefore, when the distance from the optical sensor 37 to the claw holder 31A is detected, a workpiece having a predetermined size is compared with a predetermined distance set in advance corresponding to the size (for example, diameter) of the workpiece W. It can be confirmed whether or not.

  That is, for example, when the size of the set work W is incorrect, it is possible to detect an error in the work set. Further, by detecting the distance from the optical sensor 37 to the claw holder 31 </ b> A, it can be confirmed whether or not the workpiece W can be accurately gripped by the gripping claws 31. Accordingly, it is possible to prevent the chuck device 25 from moving without holding the workpiece W, and to improve safety.

  Referring again to FIG. 1, on the front side of the guide frame 23 in the Y-axis direction, a workpiece transfer device that transfers the workpiece W to the workpiece loading path P where the chuck device 25 moves in the X-axis direction. 45 is arranged. As shown in FIG. 1, the workpiece transfer device 45 is configured by arranging a plurality of workpiece transfer conveyors 47 at appropriate intervals in the X-axis direction. The workpiece transfer device 45 is configured to place a long workpiece (not shown in FIG. 1) placed and held in parallel with the guide frame 23 in the Y-axis direction (rear direction) perpendicular to the longitudinal direction of the workpiece. ) And transports the workpiece to the workpiece loading path P.

  In the embodiment shown in FIG. 1, the workpiece transfer conveyor 47 is illustrated as being arranged in the X-axis direction. However, the number of workpiece transfer conveyors 47 may be any number as long as the target long workpiece can be supported and transferred in a direction orthogonal to the longitudinal direction of the workpiece. it can. In addition, it is also possible to make it the structure which can adjust the space | interval of the X-axis direction of the workpiece conveyance conveyor 47 as a structure which can adjust the movement of the workpiece conveyance conveyor 47 to a X-axis direction according to the length of a workpiece | work.

  As shown in FIG. 4, the work transfer conveyor 47 includes a gantry frame 49. The gantry frame 49 is provided with an endless transport chain (transfer chain) 51 that supports a workpiece (not shown in FIG. 4) that is long in the X-axis direction and transports (transfers) the workpiece in the Y-axis direction. Note that the overall configuration of the workpiece transfer conveyor 47 provided with the endless transfer chain 51 on the gantry frame 49 so as to be rotatable (runnable) is known, for example, as described in Patent Documents 1 and 2, for example. . Therefore, a detailed description of the overall configuration of the work transfer conveyor 47 is omitted, and only a characteristic configuration is described.

  Referring to FIG. 4, the transport chain 51 that can run in the Y-axis direction is provided on an upper portion of the gantry frame 49 in the work transport conveyor 47. The transport chain 51 is rotationally driven by a servo motor (not shown) provided in the gantry frame 49. The transport chain 51 is configured to be able to stably support, for example, a round pipe material or a square pipe.

  That is, as shown in FIG. 5, the transport chain 51 is provided with a curved support chain link 53 that supports a workpiece having a curved outer peripheral surface such as a round pipe WP. At the center in the longitudinal direction of the curved surface support chain link 53, a V-shaped curved surface support portion 55 that supports the curved surface of the round pipe WP corresponding to the round pipe WP of various diameters is formed. A rolling restriction chain link 57 is pivotally connected to both ends of the curved surface support chain link 53 via hinge pins 59.

  As shown in FIG. 5, the rolling restricting chain link 57 is in contact with the outer peripheral surface of a round pipe WP having a relatively large diameter supported by the curved support portion 55 of the curved support chain link 53. A rolling regulation part 61 that regulates the rolling of the WP is provided. In other words, the height dimension of the rolling regulation chain link 57 is formed higher than the height dimension of the curved support chain link 53, and the rolling regulation chain links 57 on both ends are the same height. Is formed.

  A chain link 63 having the same height and shape as the rolling restriction chain link 57 is pivotally connected to each rolling restriction chain link 57 via a hinge pin 59. That is, since each rolling regulation chain link 57 and each chain link 63 are formed at the same height, the upper surface of each rolling regulation chain link 57 and each chain link 63 is, for example, as shown in FIG. The flat portion WF of the square pipe WA and the flat portion such as an angle member (not shown) are supported, and the flat support portion 65 is configured.

  For example, when the flat surface portion WF of the square pipe WA is supported on the flat surface support portion 65, a position restriction chain link 67 for restricting the position of the square pipe WA is connected to each chain link 63 via a hinge pin 59. It is pivotally connected. A height dimension of the position restricting chain link 67 is formed larger than a height dimension of the rolling restricting chain link 57 and the chain link 63. Each position regulating chain link 67 is provided at a position equidistant from the curved surface support chain link 53. That is, each of the curved surface support chain link 53 and the position regulation chain link 67 is provided in the transport chain 51 at equal intervals.

  As already understood, the transport chain 51 can support, for example, a round pipe WP and a square pipe WA. That is, the round pipe WP is supported by the curved surface support portion 55 in the curved surface support chain link 53. Then, the square pipe WA is supported by the flat surface support portion 65 and, as shown in FIG. 6, abuts against the position restriction chain link 67 on the rear side in the conveyance direction by the conveyance chain 51 by contacting the position restriction chain link 67. The position is regulated at the contacted position (the position of the right position regulating chain link 67 in FIG. 6). Therefore, even when round pipes WP having different diameters or square pipes WA having different sizes are mixed, each pipe material can be transported in a stable state in the Y-axis direction.

  In order to transport the workpiece W conveyed to the workpiece loading path P by the conveying chain 51 in the workpiece conveying conveyor 47 to the workpiece loading path P, the workpiece W on the conveying chain 51 can be lifted freely and the workpiece A work transfer means 69 (see FIG. 4) that can be transferred to the carry-in path P is provided. In other words, the workpiece conveying means 69 can take out the workpiece W from the workpiece conveying conveyor 47.

  That is, as shown in FIG. 4, the gantry frame 49 in the work transfer conveyor 47 is provided with a guide rail 71 (see FIG. 4) that is long in the Y-axis direction. A slide member 73 that is long in the Y-axis direction is supported on the guide rail 71 so as to be movable in the Y-axis direction. The work conveying means 69 is provided near the end of the slide member 73 on the work loading path P side.

  More specifically, as shown in FIG. 4, a casing 75 is provided near the end of the slide member 73 on the work loading path P side. The casing 75 is provided with a vertical movement actuator 77 such as a fluid pressure cylinder. The vertical rod 77R such as a piston rod in the vertical movement actuator 77 supports a workpiece W for supporting the workpiece W. Part 79 is supported. The workpiece support 79 is supported by upper ends of a plurality of guide bars 81 supported by the casing 75 so as to be movable up and down.

  The workpiece support 79 is configured to be able to support the round pipe WP, the square pipe WA, and the like. That is, the workpiece support portion 79 is provided with a V-shaped curved surface support portion 83 corresponding to the round pipe WP. Further, flat support portions 85 are provided on both sides of the curved surface support portion 83 in the Y-axis direction. Further, the work support portion 79 is provided with an inclined guide 87 for guiding the square pipe WA on the transport chain 51 to the plane support portion. As shown in FIG. 7, the inclined guide 87 has a configuration in which the distal end side (upper end side) is opened at an interval substantially equal to the interval dimension of the position regulating chain link 67.

  The workpiece support portion 79 in the workpiece conveyance means 69 is normally in a conveyance standby state. That is, the workpiece support 79 is positioned near the conveyance end of the conveyance chain 51 on the workpiece support conveyor 47, and as shown in FIG. 7, is below the workpiece conveyance surface that conveys the workpiece W in the conveyance chain 51. It is in the position of being immersed in the side. Then, the workpiece W is conveyed by the conveyance chain 51, and the curved surface support portion 55 of the curved surface support chain link 53 provided in the conveyance chain 51 supports the workpiece W above the curved surface support portion 83 in the workpiece support portion 79. When moved to the position, the conveyance of the conveyance chain 51 is stopped.

  As described above, when the conveying operation of the conveying chain 51 is stopped, the workpiece support 79 is raised higher than the conveying chain 51 by the vertical movement actuator 77 in the workpiece conveying means 69 (see FIG. 4). Therefore, when the round pipe WP is placed and supported on the curved surface support portion 55 of the curved surface support chain link 53 in the transport chain 51, the round pipe WP is supported by the curved surface support portion 83 of the work support portion 79. become.

  Further, when the square pipe WA is supported by the transport chain 51, when the workpiece support 79 is raised as described above, the square pipe WA is moved to the plane support 85 side of the workpiece support 79 by the inclined guide 87. It is moved and supported by the plane support part 85.

  As described above, when the workpiece support portion 79 of the workpiece conveyance means 69 is raised higher than the conveyance chain 51 and supports the workpiece with the workpiece support portion 79, the workpiece conveyance means 69 is as shown by an imaginary line in FIG. The position is moved to a position corresponding to the work loading path P (loading path corresponding position). That is, the end of the slide member 73 is driven by reciprocating means (not shown) such as a fluid pressure cylinder or an endless rotating chain for reciprocating the slide member 73 along the guide rail 71. It is projected and moved to the loading path corresponding position P. The workpiece loading path P and the loading path corresponding position may be the same position or a slightly displaced position. Therefore, in order to facilitate understanding, the symbol “P” is attached to both the workpiece loading path and the loading path corresponding position.

  By the way, the long work W parallel to the work carry-in path P is placed and supported across the transport chains 51 provided in the work transport conveyors 47. Therefore, when the slide member 73 projects and moves to the carry-in path corresponding position P as described above, each slide member 73 provided corresponding to each transport chain 51 in each work transport conveyor 47 is moved to the work carry-in path. The projection operates in synchronism with the P direction.

  The conveyance chain 51 in each workpiece conveyance conveyor 47 is rotated at a predetermined pitch (for example, one rotation of the sprocket around the conveyance chain 51) by a three-phase motor or a servo motor. That is, the conveyance chain 51 is intermittently rotated at a predetermined pitch so that the curved surface support chain link 53 provided in the conveyance chain 51 temporarily stops at a position above the workpiece support portion 79. When the transport chain 51 is stopped, it is detected whether or not there is a workpiece W above the workpiece support portion 79.

  That is, a bracket 91 (see FIG. 7) is provided in the vicinity of the conveyance end of the conveyance chain 51 provided in each workpiece conveyance conveyor 47, and a workpiece detection sensor for detecting the workpiece W on the bracket 91. 89 is provided. The workpiece detection sensor 89 is composed of, for example, a distance sensor, and optically detects the workpiece W transported above the workpiece support 79 by the transport chain 51.

  Therefore, the workpiece W supported by the foremost curved surface support chain link 53 or the rolling regulation chain link 57 conveyed by the workpiece conveyance conveyor 47 is detected by the workpiece detection sensor 89 provided corresponding to each conveyance chain 51. The Therefore, by adding the distances between the workpiece detection sensors 89 that have detected the workpiece W, it can be detected that the length of the workpiece W is longer than the added distance. That is, the approximate length of the workpiece W can be detected. Therefore, when the workpiece W is much shorter than the preset workpiece W or very long, the workpiece dimension error can be detected before the workpiece is loaded into the laser processing machine 3.

  Also, the workpiece detection sensor 89 can detect when the workpiece W is not set normally and is placed at an angle. An alert can be stopped when an error or tilt of the workpiece dimensions is detected.

  As described above, when a long workpiece W is transported to the workpiece loading path, that is, the loading path corresponding position P by each workpiece support portion 79 provided in each workpiece transporting conveyor 47, the workpiece at the loading path corresponding position P includes a plurality of workpieces. The workpieces are received by the respective workpiece receiving portions 95 (see FIG. 9) provided in the support device 93 (see FIG. 8). The workpiece support device 93 is disposed on one side in a direction orthogonal to the longitudinal direction of the workpiece loading path P, that is, on the opposite side of the workpiece conveyance device 45 (in the Y-axis direction) with the guide frame 23 interposed therebetween. It is arranged on the rear side. Each work support device 93 is provided to be individually movable in the X-axis direction.

  More specifically, as shown in FIG. 8, each work support device 93 is attached to a guide rail 97 in the X-axis direction provided on the rear surface in the Y-axis direction of the guide frame 23 that is long in the left-right direction (X-axis direction). A slide main body 99 that is individually movable in the left-right direction is provided. The slide body 99 is reciprocated along the guide rail 97 by the drive of the servo motor 101 provided in the slide body 99. The movement of the slide body 99 in the X-axis direction is performed by a configuration in which a pinion (not shown) rotated by the servo motor 101 is engaged with a rack (not shown) that is long in the X-axis direction.

  The slide body 99 is provided with a guide column 103 (see FIG. 9) in the vertical direction (Z-axis direction). The guide column 103 is provided with a guide rail 103A in the vertical direction, and an elevating member 105 is guided and supported on the guide rail so as to be movable up and down. The vertical movement of the elevating member 105 is performed by a ball screw that is rotationally driven by a servo motor 107 provided in the guide column 103. The elevating member 105 is long in the front-rear direction, and a slide member 107 that is long in the front-rear direction is supported by the elevating member 105 so as to be movable back and forth. The slide member 107 is moved in the front-rear direction by an actuator for back-and-forth movement (not shown) such as a fluid pressure cylinder. The work receiving portion 95 is provided on one end side (front end side) of the slide member 107 in the Y-axis direction.

  The workpiece receiving unit 95 serves to support the workpiece W transferred to the loading path corresponding position P by the workpiece support unit 79 of the workpiece transfer conveyor 47. The workpiece receiving member 95 is moved to the left, right, up, and down by moving the slide body 99 in the horizontal direction along the guide rail 97, moving the lifting member 105 up and down, and moving the slide member 107 back and forth. It can be moved and positioned in the front-rear direction.

  When the workpiece receiving unit 95 receives the long workpiece W from the workpiece support unit 79 of the workpiece conveying conveyor 47, the workpiece receiving unit 95 uses the axis of the workpiece W in the longitudinal direction as the axis of the rotary frame 29 in the chuck device 25. It provides a centering function that matches the heart. In addition, the workpiece receiving portion 95 is configured to move the workpiece W in the Y-axis and Z-axis directions when the workpiece is rotated while the end portions thereof are gripped and rotated by the plurality of gripping claws 31 in the chuck device 25. It has a function of suppressing shake.

  That is, the workpiece receiving portion 95 is provided with a base plate 109 (see FIG. 10) that is integrally attached to the front end portion of the slide member 107 in the Y-axis direction. The base plate 109 is formed long in the Y-axis direction, and support brackets 111 are erected on both ends in the Y-axis direction. The support bracket 111 rotatably supports both end sides in the Y-axis direction of two support rollers 113 that are horizontally spaced apart in the X-axis direction. The support roller 113 may be one or more than three.

  Between the support rollers 113, a pair of clamp members 115 that can sandwich the workpiece W are provided in synchronization with each other in the Y-axis direction. That is, the base plate 109 is provided with a guide member (not shown) in the Y-axis direction. The guide member is provided with guide portions that are long in the Y-axis direction and are spaced apart in the X-axis direction. A rack member 119 is supported by the guide portion so as to be opposed to the X-axis direction and movable in the Y-axis direction. Racks 119R are formed on the opposing surfaces of the rack member 119, respectively. Further, a pinion (not shown) rotated by a cylinder (actuator) 117 mounted on the base plate 109 is engaged with the facing rack 119R. Each of the rack members 119 is integrally provided with the clamp member 115 opposed in the Y-axis direction.

  With the above configuration, the pair of clamp members 115 are moved toward and away from each other in the Y-axis direction synchronously by rotating the pinion forward and backward with a cylinder. Therefore, the workpiece W placed on the support roller 113 can be centered in the Y-axis direction by sandwiching the workpiece W from the Y-axis direction by the pair of clamp members 115. Note that centering in the Z-axis direction (vertical direction) is performed when the elevating member 105 moves up and down.

  Further, the work receiving unit 95 of the work support device 93 is provided with a steadying member 121. The steadying member 121 has a function of supporting the workpiece W supported by the workpiece receiving unit 95 from below and suppressing the deflection of the workpiece W. More specifically, the work receiving portion 95 is horizontally provided with a support base 123 attached to the base plate 109. The support base 123 is provided with a lift base 127 that is moved up and down by a vertically moving actuator 125 such as a fluid pressure cylinder mounted on the support base 123 so as to freely move up and down.

  The lifting base 127 is formed long in the Y-axis direction. Guide rods 129 that are vertically guided by guide portions provided on the base plate 109 are vertically attached to both ends of the elevating base 127 in the Y-axis direction. On the elevating base 127, the steadying member 121 is provided. An arcuate concave curved surface 131 is formed on the steadying member 121 for suppressing the vertical and horizontal deflection of the workpiece W when the workpiece W supported by the workpiece receiving portion 95 rotates about the axis. It is.

  As shown in FIGS. 10 (A) and 10 (B), the steadying member 121 is provided so as to be able to protrude and retract with respect to the support roller 113. When supporting the workpiece W, the steadying member 121 is shown in FIG. 10 (A). Thus, it supports in the state which protruded upwards from the said support roller 113. As shown in FIG. At this time, since the workpiece W is supported by the concave curved surface 131 of the steadying member 121, the vertical deflection is suppressed and the horizontal deflection (Y-axis direction) is also suppressed. . The concave curved surface 131 is positioned at a height at which the circumscribed circumference of the work comes into contact.

  In the configuration as described above, the operation of conveying the workpiece W from the workpiece conveying device 45 to the workpiece loading path P in which the chuck device 25 reciprocates in the X-axis direction is performed as follows.

  That is, a long workpiece W to be subjected to laser processing is placed on the conveyance chain 51 in each conveyance conveyor 47 in the workpiece conveyance device 45. At this time, the other end side (front end side) of the workpiece W in the X-axis direction is brought into contact with, for example, a positioning plate (not shown) on the workpiece conveyor 47 that is closest to the laser processing machine 3, and the X-axis direction. Align to a predetermined position. And it mounts in parallel with a X-axis direction over the some workpiece conveyance conveyor 47. FIG.

  When the work W is a round pipe, the work W is placed on the curved surface support portion 55 of the curved surface support chain link 53 in each conveyance chain 51. Further, when the workpiece W is, for example, a square pipe, the workpiece W is placed on the flat support portion 65 in each conveyance chain 51 and placed in a state of being in contact with the position regulating chain link 67. As is already understood, the workpieces W are placed one by one between the position regulating chain links 67 in each conveyance chain 51. Therefore, even when, for example, round pipes or square pipes of various sizes are mixed as the long work W, each work W is held in a state parallel to the X-axis direction and spans the transport chains 51. Can be placed.

  As described above, after the workpiece W is placed on each workpiece conveyance conveyor 47, each conveyance chain 51 is driven, and the workpiece W is conveyed to the workpiece loading path P side. And if the workpiece | work W is transferred above the workpiece | work support part 79 located in a conveyance standby state, the drive of the said conveyance chain 51 will be stopped. Thereafter, the workpiece support 79 lifts the workpiece W, and the slide member 73 moves rearward in the Y-axis direction, so that the workpiece W supported by the workpiece support 79 is conveyed to the loading path corresponding position P. is there.

  As described above, when the workpiece W is transported to the loading path corresponding position P by the workpiece support portion 79, as shown in FIG. 11A, in correspondence with the length in the X-axis direction of the workpiece W to be transported, The chuck device 25 is retracted in advance to a position separated in the X-axis direction so as not to interfere with the workpiece W. The workpiece support device 93 is previously positioned at a position corresponding to the length of the workpiece W so as to support both ends of the workpiece W. In addition, in FIGS. 11-14, each workpiece conveyance conveyor 47 is simplified and illustrated by the structure in case only one conveyance chain 51 is provided.

  11B, when the workpiece W on the workpiece conveyance conveyor 47 is conveyed to a position corresponding to the workpiece support portion 79, the workpiece W is lifted by the workpiece support portion 79. Thereafter, as shown in FIG. 12A, the workpiece W is conveyed to the loading path corresponding position P by the workpiece support portion 79. At this time, the workpiece receiving portion 95 in the workpiece support device 93 is previously positioned at a position where the workpiece W is received from the workpiece support portion 79.

  That is, as shown in FIG. 12A, when the workpiece W is transported to a position above the workpiece receiving portion 95 in the workpiece support device 93 by the workpiece supporting portion 79, the workpiece receiving portion 95 rises, and the workpiece supporting portion 79 is lowered, and the workpiece W is delivered to the workpiece receiving unit 95. Thereafter, the workpiece support 79 is returned to the original transport standby position. And in the workpiece | work receiving part 95 of the workpiece | work support apparatus 93 which supported the workpiece | work W, the workpiece | work W is pinched by a pair of clamp member 115, and the centering of the workpiece | work W in the Y-axis direction is performed. Further, the workpiece receiving portion 95 is moved up and down, and positioned (centering in the Z-axis direction) so that the axis (rotation center) of the workpiece W coincides with the rotation center of the chuck device 25.

  As described above, when the axis of the workpiece W coincides with the rotation center of the chuck device 25, the chuck device 25 moves so as to be close to the end of the workpiece W, and a plurality of gripping claws (gripping members) in the chuck device 25 are moved. ) 31, the work W is gripped (see FIG. 12B). In this case, in the state where the optical sensor 37 provided in the chuck device 25 protrudes in the X-axis direction with respect to the gripping claws 31 as shown in FIG. 3, the chuck device 25 is moved closer to the end of the workpiece W. When it moves, the end of the workpiece W is detected by the optical sensor 37.

  As described above, after the end portion of the workpiece W is detected by the optical sensor 37, the chuck device 25 is moved from the detection position in the same direction by a predetermined distance, and the claw member (gripping member) provided in the chuck device 25 is moved to this moving position. ) 31, the vicinity of the end of the workpiece W can be gripped. Therefore, it is possible to prevent the chuck device 25 from inadvertently colliding with the workpiece W, to reliably chuck with the claw, and to improve safety.

  Further, the operation of gripping the end portion of the workpiece W by the plurality of gripping claws 31 provided in the chuck device 25 can be performed as follows. That is, the approach of the chuck device to the workpiece W until the optical sensor 37 provided in the chuck device 25 detects the end of the workpiece W or until the position is close to the end of the workpiece W whose length is known in advance. To fast forward. Then, the approaching operation is performed at a medium speed or a low speed from a position close to the end of the work W until the optical sensor 37 detects the end of the work W.

  As described above, after the end of the workpiece W is detected by the optical sensor 37, the chuck device 25 is returned by a predetermined distance. The chuck device 25 is moved at a low speed in the direction approaching the workpiece W from the return operation stop position. In this case, the gripping position with respect to the end portion of the workpiece W can be positioned with higher accuracy by performing the operation in this way.

  As described above, after gripping the end portion (rear end portion) of the workpiece W by the chuck device 25, the chuck device 25 is moved in the direction approaching the laser beam machine 3 (X-axis direction), whereby the workpiece W Can be carried into the rotary chuck 7 of the laser processing machine 3. As described above, when the tip of the workpiece W is carried into the rotary chuck 7, the workpiece W is gripped by the chuck device 25 and also by the rotary chuck 7. When the workpiece W is rotated about its axis, the rotation of the chuck device 25 and the rotation of the rotary chuck 7 are performed in synchronization.

  As described above, when the workpiece W is gripped by the chuck device 25 and the rotary chuck 7 and laser processing is performed by the laser processing machine 3, when the workpiece support device 93 is not used, FIG. As shown, all the work support devices 93 are retracted from the work loading path P along which the chuck device 25 reciprocates. When not in use, both are retracted before starting machining.

  When the work support device 93 is used during laser processing, the work support device 93 is arranged at an appropriate interval between the chuck device 25 and the rotating chuck 7 as shown in FIGS. 14 (A) and 14 (B). To do. Then, the steadying member (vibration suppressing member) 121 of the workpiece receiving unit 95 in the workpiece support device 93 is raised, and the workpiece W is rotatably supported by the concave curved surface 131 of the vibration suppressing member (stabilizing member) 121. is there.

  The workpiece support device 93 moves to the side of the laser processing machine 3 in response to the approaching movement of the chuck device 25 when laser processing of the workpiece W progresses and the chuck device 25 gradually moves closer to the laser processing machine 3. It moves gradually and supports the intermediate position of the workpiece W. 14B, when the chuck device 25 comes close to the laser processing machine 3, the workpiece support device 93 stops supporting the workpiece W and retreats to a position where it does not interfere with the chuck device 25. Is.

  As can be understood from the above description, when the center portion of the workpiece W is easily bent, the workpiece support device 93 can support the center portion in the longitudinal direction of the workpiece W. Therefore, when the workpiece W is rotated around the axis and laser processing is performed, it is possible to suppress the deflection caused by the deflection of the workpiece W. Therefore, the workpiece W can be laser processed with higher accuracy.

  By the way, when the work W is carried into the rotary chuck 7 of the laser processing machine 3 by the chuck device 25, the work that detects that the tip of the work W has reached the laser processing position by the laser processing head 9 in the laser processing machine 3 is detected. A tip end detection means 133 (see FIG. 15) is provided. More specifically, the laser processing head 9 in the laser processing machine 3 is provided on the processing machine main body 5 so as to be movable in the Y-axis direction (a direction perpendicular to the axis of the rotary chuck 7) and movable up and down. It has been. The laser processing head 9 performs laser processing at a position slightly separated from the rotary chuck 7 toward the other end side in the X-axis direction.

  In other words, the laser processing position by the laser processing head 9 is set at a position slightly deviated from the rotary chuck 7 toward the conveyor device 13 in the X-axis direction. Accordingly, the workpiece W gripped by the rotary chuck 7 is rotationally positioned around the axis, and the workpiece is moved and positioned in the X-axis direction by the chuck device 25 gripping the rear end portion of the workpiece W. The workpiece W can be laser machined by irradiating the workpiece with laser light from the laser machining head 9.

  As described above, when performing laser processing on the workpiece W, it is necessary to accurately position the workpiece W with respect to the laser processing position. Therefore, the workpiece tip detection means 133 is provided to detect the position of the tip of the workpiece W at the laser processing position. More specifically, the workpiece tip end detection means 133 moves the laser projector 135A (the mounting structure for the processing machine body 5 is not shown) mounted on the processing machine body 5 of the laser processing machine 3 and the reflector 135B in the Y-axis direction. It is the structure provided facing this.

  The laser projector 135A is a retroreflective type sensor (not only the retroreflective type but also a transmissive type or a reflective type), and the rotation of the rotary chuck 7 at a position vertically below the laser processing head 9. It arrange | positions so that a laser beam may be irradiated horizontally in the Y-axis direction orthogonal to the center. Therefore, it is possible to detect that the tip of the workpiece W has been accurately positioned at the laser processing position by the laser processing head 9. Therefore, laser processing of the workpiece W can be started immediately after the workpiece tip detection means 133 detects the tip of the workpiece W.

  By the way, the actual workpiece length can be accurately determined from the rear end position of the workpiece W detected on the chuck device 25 side and the movement distance of the chuck device 25 when detected on the rotary chuck 7 side. If there is a difference between the workpiece length detection result and the machining program, an alarm can be issued and machining can be stopped.

  As already understood, when laser processing of a long workpiece W is performed, the workpiece W is transferred from the workpiece transfer conveyor 47 to the workpiece loading path P. The workpiece W is supported on the workpiece carry-in path P by the workpiece receivers 95 in the plurality of workpiece support devices 93. The rear end portion of the workpiece W supported by the workpiece receiving portion 95 is gripped by the chuck device 25 and carried into the rotary chuck 7 of the laser processing machine 3. The workpiece W is gripped by the rotating chuck 7 and laser processing is performed by the laser processing head 9 while rotating around the axis. As described above, when laser processing of the workpiece W is performed, the portion protruding from the rotary chuck 7 to the other end side in the X-axis direction, that is, the downstream side as viewed in the loading direction of the workpiece W is caused by the conveyor device 13. It is what is supported.

  By the way, referring to FIG. 16 showing the main part, the conveyor device 13 is separated from the laser processing machine 3 to the other end side in the X-axis direction. The work shooter 15 is provided between the laser beam machine 3 and the conveyor device 13 so as to be freely movable in and out of the Y-axis direction.

  More specifically, a gantry 137 is disposed on the other end side in the X-axis direction of the rotary chuck 7 in the laser processing machine 3 as shown in FIG. A guide frame 139 (see FIG. 18) is integrally provided on the rear side of the frame 137 in the Y-axis direction. On this guide frame 139, a slide frame 141 is guided and supported so as to be movable in the Y-axis direction. The work shooter 15 is tiltably provided on the front end side of the slide base 141 in the Y-axis direction.

  More specifically, the slide base 141 is reciprocated in the Y-axis direction by the action of an actuator (not shown) such as a fluid pressure cylinder or a rack and pinion. The work shooter 15 is tilted by the operation of an actuator 143 (see FIG. 20) such as a fluid pressure cylinder mounted on the slide base 141.

That is, as shown in FIG. 17, the work shooter 15 is normally retracted from the laser processing position in the laser processing machine 3 to the rear position in the Y-axis direction. When the short product WG is cut and separated from the workpiece W at the laser processing position, it is moved to the front side in the Y-axis direction as shown in FIG.
At this time, as shown in FIG. 19, the work shooter 15 is inclined so that the front side in the Y-axis direction is lowered, and the cut and separated short product WG falls on the inclined work shooter and is discharged. is there. The small scrap is dropped into a scrap box (not shown) arranged in the mount 137.

  Further, when cutting and separating a short product WG that does not want to be damaged by dropping, the work shooter 15 is held in a horizontal state so as to support the short product WG, and the machine stops. After taking out the workpiece, the operator restarts and continues machining.

  Therefore, for example, when processing the short products WG one after another, the operation of transporting the short products WG in the longitudinal direction is unnecessary and can be processed efficiently.

  By the way, when the laser processing is performed by projecting the tip end portion of the workpiece W from the rotary chuck 7 in the laser processing machine 3 to the other end side in the X axis direction, the conveyor device 13 moves the tip end side of the workpiece W. It has a supporting effect. Therefore, as shown in FIG. 16, the conveyor device 13 has a region where the work shooter 15 reciprocates in the Y-axis direction, and the other end side (the workpiece W of the workpiece W) from the laser processing machine 3. It is arranged away from the downstream side as viewed in the moving direction.

  In order to support the front end side of the workpiece W that greatly protrudes in the X-axis direction, the conveyor device 13 is configured as follows.

  That is, the conveyor apparatus 13 is provided with the box-shaped main body frame 145, as shown in FIG. An elevating member 147 is provided on the main body frame 145 so as to be movable up and down. The elevating member 147 is moved up and down by an elevating operation device (not shown) such as a ball screw mechanism rotated by a servo motor or a servo cylinder. The elevating member 147 is positioned at a desired height position corresponding to the size or the like of the workpiece W to be laser processed by the laser processing machine 3.

  A support table 149 capable of supporting a product (processed product) WG to be laser processed at the laser processing position is movable on the elevating member 147 in the X-axis direction, that is, in a direction approaching and moving away from the laser processing position. It is supported movably. The movement of the support table 149 in the X-axis direction is performed by a reciprocating device (not shown) such as a fluid pressure cylinder.

  The support table 149 is configured to rotatably include a plurality of support rollers 151 that support the product WG. The support table 149 includes a wall member 153 that prevents the product WG on the support table 149 from dropping off in the Y-axis direction. More specifically, the wall member 153 is erected on the support table 149 on both sides of the support roller 151 in the Y-axis direction. Therefore, the product supported on the support roller 151 of the support table 149 does not fall off from the support roller 151 in the Y-axis direction.

  In the support table 149, a pair of product clamps 155 capable of gripping the product WG on the support table 149 are close to each other in the Y-axis direction at one end side in the X-axis direction, that is, the end side close to the laser processing position. It is provided so that it can be separated. Further, at a substantially central position in the X-axis direction of the support table 149, a pair of steadying members 157 for suppressing the shake of the product WG during laser processing of the product WG are provided so as to be able to approach and separate from each other in the Y-axis direction. ing.

  More specifically, a box-shaped guide frame 159 (see FIG. 22) that crosses the support table 149 in the Y-axis direction is provided at substantially the center of the support table 149 in the X-axis direction.

  A pair of slide blocks 161 are guided and supported on the guide frame 159 so as to be close to and away from each other in the Y-axis direction. The pair of slide blocks 161 are integrally provided with a roller support member 163 that rotatably supports a pair of eaves rollers as the steady stop member 157. A servo motor 165 with a brake is attached to the guide frame 159 in order to make the pair of steadying members 157 approach and separate from each other in the Y-axis direction. In the guide frame 159, an intermediate gear 173 linked to the output shaft of the speed reducer 167 rotated by the servo motor 165 is rotatably provided.

  A rack 171A extending from one slide block 161 in the Y-axis direction is engaged with the pinion 169 engaged with the intermediate gear 173. The intermediate gear 173 is integrally provided with an intermediate gear (not shown) for rotating a pinion (not shown) meshed with a rack 171B in the Y-axis direction provided on the other slide block 161. Therefore, when the servo motor 165 is driven to rotate forward and backward, the intermediate gear 173 is rotated forward and backward. Therefore, the pair of steady rest members 157 are moved toward and away from each other in the Y-axis direction in synchronization.

  As understood from the above description, the pair of steadying members 157 can sandwich the long workpiece W on the support table 149 from the Y-axis direction. Further, the pair of steady rest members 157 can be positioned in a state appropriately separated from the workpiece W on the support table 149 in the Y-axis direction. As described above, the workpiece W on the support table 149 can be prevented from swinging greatly in the Y-axis direction by positioning the workpiece W appropriately in the Y-axis direction.

  The configuration in which the pair of product clamps 155 approach and separate from each other in the Y-axis direction may be the same configuration as the configuration in which the steady rest members 157 approach and separate from each other in the Y-axis direction. Further, as a configuration in which the product clamps 155 approach and separate from each other in the Y-axis direction, each product clamp 155 may be configured to be driven synchronously by a fluid pressure cylinder such as an air cylinder. Further, for example, each product clamp 155 may be connected to a traveling portion on the opposite side of the endless chain so as to move in synchronization with each other in a direction approaching or separating from each other. That is, various configurations can be adopted as the configuration in which the pair of product clamps 155 approach and separate from each other in the Y-axis direction.

  Incidentally, the support table 149 in the conveyor device 13 is normally positioned above the main body frame 145 and at a standby position away from the laser processing machine 3 as shown in FIG. Thus, when the support table 149 is positioned at the standby position, the work shooter 15 does not interfere with the work shooter 15 when moving in the Y-axis direction.

  Therefore, when the support table 149 is located at the standby position, the scrap is dropped down and the short product WG can be carried out by the work shoe 15.

  When laser processing of a relatively long product WG is performed by the laser processing machine 3, the support table 149 is moved so as to approach the laser processing machine 3 from the standby position as shown in FIG. That is, the support table 149 is protruded and moved to a region where the work shooter 15 moves in the Y-axis direction. The support table 149 supports the workpiece W so as to suppress the shake of the workpiece W at the protruding movement position.

  That is, the position of the rotation center of the rotary chuck 7 that grips and rotates the workpiece W in the laser beam machine 3 is always a constant height. Here, for example, when a round pipe having a different diameter is gripped by the rotary chuck 7, the rotation center of the rotary chuck 7 coincides with the axis of the round pipe. Therefore, when the round pipes of various diameters are gripped by the rotary chuck 7, the lowest position of each round pipe fluctuates up and down. By the way, when the work is a round pipe, the round pipe can be supported with the work supported by the support table 149 in the conveyor device 13.

  However, when the workpiece W is a non-circular workpiece such as a square pipe WA, for example, the workpiece is rotated around the axis while the workpiece is placed and supported by the support table 149. It is impossible. Therefore, the vertical movement position of the support table 149 in the conveyor device 13 is controlled in accordance with the cross-sectional shape and dimensions of the workpiece W and the rotation angle around the longitudinal axis.

  More specifically, when the workpiece W is, for example, a square pipe WA having a side of 200 mm, a circumscribed circle C1 is set as shown in FIG. The center of the circumscribed circle C1 is set to 0. In this case, the center of the cross-sectional shape of the square pipe WA is a position where the diagonal lines of the corners A1, A2, A3, A4 intersect, and coincides with the center 0.

  Here, the initial positions of the corners A1, A2, A3, and A4 are as shown in FIG. 25A, and the plane between the corners A3 and A4 is supported by the support table 149. It shall be. FIG. 25B shows the relationship between the corners A1, A2, A3 and A and the rotation angle when the square pipe WA is rotated counterclockwise around the center 0. As shown in FIG. become.

  That is, when the rotation angle is in the range of 0 ° to 90 °, the corner portion A3 indicates the lowest position (lowermost portion). Therefore, as shown in FIG. 25C, the support table 149 is moved up and down following the vertical movement position of the corner A3. Next, it is moved up and down following the vertical movement positions of the corners A2, A1, and A4. At this time, the vertical movement position of the support table 149 can be controlled so as to always contact the square pipe WA.

  Accordingly, it is possible to move the support table 149 up and down while always maintaining the vertical distance between the square pipe WA and the support table 149 at a substantially constant interval. Therefore, when the square pipe WA swings in the vertical direction, it comes into contact with the support portion 149F of the support table 149, and the vertical swing can be suppressed.

  By controlling in the same way, not only square pipes, but also when performing laser processing by rotating a non-circular deformed material, such as a channel material or angle material, about the longitudinal axis. It is also possible to suppress the vertical shake.

  Then, the initial height position of the support portion 149F (see FIGS. 25 and 26) of the support table 149 is set. And it is hold | maintained at the space | interval dimension L (refer FIG. 26) of the circumscribed circle C1 of the workpiece | work W, and the said steadying prevention member 157. FIG.

  Therefore, when the workpiece W is rotated around the center 0 and laser processing is performed, the vertical deflection is suppressed by contacting the support portion 149F of the support table 149. Further, the shake in the horizontal direction (Y-axis direction) orthogonal to the longitudinal direction of the workpiece W is controlled by contacting the steady member 157. Therefore, laser processing can be performed while suppressing the deflection on the tip side of the workpiece W, and high-precision laser processing is possible.

  By the way, since the support table 149 is provided with a pair of steadying members 157 (see FIG. 21), the interval between the steadying members 157 is set to the same angle as the steadying operation of the supporting table 149 in the vertical direction. It is also possible to prevent the workpiece W from wobbling by positioning so as to always contact the pipe. In this case, the steadying can be performed at two places, that is, the steadying in the vertical direction of the support table 149 and the steadying in the horizontal direction by the pair of steadying members 157. Therefore, it is possible to more effectively prevent the workpiece W from being steady.

  As described above, when the workpiece W is laser processed by the laser processing machine 3 and the product WG is cut and separated from the workpiece W, the product WG is placed on the support roller 151 of the support table 149 in the conveyor device 13. Is done. The product WG is gripped by the product clamp 155 provided on the support table 149. Thereafter, by moving the support table 149 to the standby position (position shown in FIG. 23), the product WG is conveyed downstream from the laser processing position.

  As described above, after the support table 149 is moved to the standby position, the work pusher device 189 (see FIG. 27) for transferring the product WG on the support table 149 onto the unloading conveyor 19 on the downstream side. Is provided. That is, a guide frame 191 is provided at a side position in the Y-axis direction of the support table 149 in the vicinity of the support table 149 and parallel to the X-axis direction (moving direction of the support table 149). The guide frame 191 is formed long from the position close to the laser processing machine 3 (not shown in FIG. 27) to the vicinity of the other end side in the X-axis direction of the conveyor device 13 (see FIG. 16). ).

  A slider 193 is supported on the guide frame 191 so as to be movable in the X-axis direction. The slider 193 is moved and positioned in the X-axis direction under the driving of an appropriate slide drive mechanism such as a timing belt mechanism or an endless chain mechanism that is rotationally driven by a three-phase motor 195 mounted on the guide frame 191. Is. The slider 193 has an extending portion that extends to a position above the support table 149 in the conveyor device 13. An elevating guide 197 in the vertical direction is provided at the distal end side of the extending portion. The motor is not limited to a three-phase motor, and may be a servo motor or the like.

  The elevating guide 197 is provided with a product moving member 199 that can move up and down. The product moving member 199 functions to push and move the rear end portion of the product WG on the support table 149 toward the carry-out conveyor 19 side. In other words, the product moving member 199 serves to move the product WG on the support table 149 in the conveyor device 13 in a direction away from the laser processing machine 3 in the X-axis direction.

  Therefore, the product moving member 199 has, for example, a rectangular plate shape, and is provided in a moving area where the product WG is movably supported on the support table 149 so as to be able to enter and exit from above. That is, the product moving member 199 is provided such that the upper position of the support table 149 in the conveyor device 13 can be moved in the X-axis direction and can be moved up and down. And when it descend | falls, it adjoins to the support roller 151 in the support table 149, and makes the effect | action which pushes the rear-end part of the product WG.

  In order to move the product moving member 199 up and down along the elevating guide 197, the elevating guide 197 is provided with an elevating actuator 201 such as a fluid pressure cylinder. Therefore, the product moving member 199 can be positioned in a lowered position where the product moving member 199 abuts on an end of the product WG and pushes up and a raised standby position by the operation of the lifting / lowering actuator 201.

  Therefore, as described above, when the product WG is positioned on the support table 149 of the conveyor device 13 and the support table 149 is moved away from the laser processing machine 3, the rear end portion of the product WG. The product moving member 199 can be lowered to a height position for pushing the product WG on the support table 149 between the product WG and the laser processing machine 3 (see FIG. 28). ).

  Then, by moving the slider 193 in the X-axis direction and away from the laser processing machine 3, as shown in FIG. 29, the product WG is placed on the carry-out conveyor 19 (not shown in FIG. 29). It can be taken out. As described above, after the product WG is carried out onto the carry-out conveyor 19 by the product moving member 199, the product moving member 199 is returned to the original standby position.

  By the way, when laser processing of a long workpiece W is performed in the laser processing machine 3, the tip side of the workpiece W may be carried onto the carry-out conveyor 19. Therefore, the carry-out conveyor 19 is configured to be movable up and down like the support table 149 in the conveyor device 13.

  More specifically, as shown in FIGS. 30 and 31, the carry-out conveyor 19 includes a base frame 203 having a frame structure that is long in the X-axis direction. On the base frame 203, a plurality of roller units 207A, 207B, and 207C including a plurality of support rollers 205 (see FIG. 32) for supporting the product WG are provided so as to freely move up and down. The roller units 207A to 207B are moved up and down by pantograph mechanisms 209A, 209B, and 209C. Each of the pantograph mechanisms 209A to 209C has the same configuration and includes a pantograph mechanism that makes a pair in the Y-axis direction.

  The pantograph mechanisms 209 </ b> A to 209 </ b> C are configured such that the central portions of a pair of operating links 211 </ b> A and 211 </ b> B having the same length are pivotally attached in an X shape via a pivot 213. The lower end portion of one working link 211A in the pantograph mechanisms 209A to 209C is pivotally attached to a fixed bracket 217 fixed on the base frame 215 in the base frame 203. The lower end of the other actuation link 211B is pivotally attached to a slide bracket 219 (see FIG. 32) provided on the base frame 215 so as to be movable in the X-axis direction.

  An upper end portion of the other operation link 211B in each of the pantograph mechanisms 209A to 209C is pivotally attached to an elevating frame 221 in the roller units 207A to 207C. The pivot position of the other actuation link 211 </ b> B with respect to the lift frame 221 is a position vertically above the pivot position of the lower end portion of the actuation link 211 </ b> A with respect to the fixed bracket 217. The upper end portion of the one working link 211A supports the lifting frame 221 so as to be relatively movable in the X-axis direction at a position above the slide bracket 219. Therefore, the roller units 207A to 207C are always moved up and down while maintaining the horizontal.

  A pantograph actuating device 223 (see FIG. 32) that operates each of the pantograph mechanisms 209A to 209C synchronously to move the roller units 207A to 207C up and down synchronously via the pantograph mechanisms 209A to 209C. Is provided. More specifically, a speed reducer 227 rotated by a servo motor 225 is mounted on the base frame 215. A ball screw 229 that is long in the X-axis direction is linked to the output shaft of the speed reducer 227. A nut member 231 is screwed to the ball screw 229 so as to be movable in the X-axis direction.

  The nut member 231 is attached to a slider 233 supported by the base frame 215 so as to be movable in the X-axis direction. The slider 233 and the slider bracket 219 are connected via a buffer means 235. More specifically, the buffering means 235 is composed of an air damper provided with a piston rod 237 that can be freely moved in and out. The piston rod 237 is connected to the slide bracket 219.

  Therefore, when the servo motor 225 is driven to rotate the ball screw 229, the slider 233 is moved in the X-axis direction due to the screwed relationship between the ball screw 229 and the nut member 231. When the slider 233 is moved in the X-axis direction, the slider bracket 219 is moved in the X-axis direction via the buffer means 235. Therefore, the roller unit 207A is moved up and down via the pantograph mechanism 209A.

  In order to move the roller units 207B and 207C up and down, sliders 233B and 233C having buffer means (reference numerals omitted) having the same configuration as the buffer means 235 are provided on the base frame 215 so as to be movable in the X-axis direction. Yes. And the piston rod 237 provided in each said buffer means is interlockingly connected with the pantograph mechanisms 209B and 209C. The connection structure between the piston rod 237 and the pantograph mechanisms 209B and 209C is the same as the connection structure with respect to the pantograph mechanism 209A.

  In order to move the roller units 207A, 207B, and 207C up and down in synchronization, the slider 233 and the slider 233B and the slider 233B and the slider 233C are integrally connected via a connecting rod 239, respectively. . Therefore, when the servo motor 225 is appropriately driven to rotate, the roller units 207A, 207B, and 207C are moved up and down in synchronization with each other.

  As already understood, the roller units 207 </ b> A to 207 </ b> C in the carry-out conveyor 19 are simultaneously moved up and down by controlling and rotating the servo motor 225. Therefore, it is possible to move up and down in synchronization with the support table 149 in the conveyor device 13 by appropriately controlling the rotation operation of the servo motor 225.

  In addition, with the above configuration, for example, when laser processing is performed by rotating the square pipe WA about the axis, the corner portion of the square pipe WA acts on each of the roller units 207A to 207C in an impact and an overload occurs. The above-mentioned impact can be reduced. That is, when a load in the vertical direction suddenly acts on each of the roller units 207A to 207C, the air damper as the buffering means 235 absorbs the impact. Accordingly, it is possible to prevent an impact load from acting on the threaded portion between the ball screw 229 and the nut member 231 and to improve safety.

  As described above, when the product WG is long, the workpiece may be carried onto the roller units 207A to 207C in the carry-out conveyor 19 and laser processing may be performed. Therefore, in order to suppress the shake of the workpiece W in the horizontal direction (Y-axis direction), a plurality of steady members 241 having the same configuration as the steady member 157 are provided on the base frame 203. As shown in FIGS. 30 and 31, each of the steady prevention members 241 is provided at an appropriate distance in the X-axis direction.

  In order to discharge the product on the carry-out conveyor 19 onto the product stocker 21 provided on the front side of the carry-out conveyor 19 in the Y-axis direction, the product pushers 243A, 234B, and 243C are provided on the carry-out conveyor 19 with the Y-axis. It is provided to be movable in the direction. More specifically, the product pushers 243A to 243C are provided in the roller units 207A to 207C as shown in FIGS. Accordingly, the product pushers 243A to 243C are moved up and down integrally with the roller units 207A to 207C by the pantograph mechanisms 209A to 209C.

  When the roller units 207A to 207C are raised, the support rollers 205 provided in the roller units 207A to 207C are raised higher than the steadying member 241 as shown in FIG. Thus, in order to move the product pushers 243A to 243C to the front side in the Y-axis direction in a state where the support roller 205 is raised higher than the steadying member 241, the elevating frame 221 includes, for example, a fluid A reciprocating actuator 245A, 245B, 245C such as a pressure cylinder is provided.

  Accordingly, when the ascending frame 221 in the roller units 207A to 207C is in the raised state, the product pushers 243A to 243C are moved to the front side in the Y-axis direction by the reciprocating actuators 245A to 245C. The product on 207C can be discharged onto the product stocker 21.

  As can be understood from the above description, in the present embodiment, a work that is long in the left-right direction is provided by the work transfer device 45 disposed on the front side in the Y-axis direction of the work loading path P that is long in the left-right direction (X-axis direction). W is conveyed to the workpiece carry-in path P. When the workpiece W is conveyed to the workpiece carry-in path P, it is supported by a plurality of workpiece support devices 93 arranged on the rear side in the Y-axis direction of the workpiece carry-in path P.

  Each of the workpiece support devices 93 can be positioned in the left-right direction, and can support a desired position of the workpiece W corresponding to the length of the workpiece W. As described above, when the workpiece W is supported by each workpiece support device 93, one end side of the workpiece W in the X axis direction (the workpiece The rear end side) is gripped. Then, the workpiece W is carried into the rotary chuck 7 in the laser processing machine 3 by the chuck device 25. Then, the workpiece W is rotated and positioned around the axis by the rotary chuck 7 and the chuck device 25, and the laser beam is irradiated from the laser processing head 9 provided in the laser processing machine 3 to perform laser processing of the workpiece W. Is called.

  At this time, the work support device 93 can be moved to a desired position in the X-axis direction in response to the movement of the chuck device 25 in the X-axis direction. Therefore, the intermediate position of the workpiece W can be supported by the workpiece support device 93 between the chuck device 25 and the laser processing machine 3. Therefore, the occurrence of deflection caused by the bending at the intermediate position of the workpiece W is suppressed, and laser processing with high accuracy is performed.

  As described above, when laser processing is performed by the laser processing machine 3 and the product WG cut and separated from the workpiece W is relatively short, it is received by the workpiece shooter 15. The product received by the work shooter 15 is dropped into the product box 17 and discharged.

  When the product WG cut and separated from the workpiece W is relatively long, the support table 149 in the conveyor device 13 is operated to protrude so as to be close to the laser processing machine 3 to support the tip side of the workpiece W. The support table 149 can move up and down and moves up and down corresponding to the rotation angle of the workpiece W when the workpiece W is, for example, a square pipe WA.

  That is, the support table 149 always supports the workpiece W and suppresses the deflection caused by the deflection of the workpiece W. Further, the support table 149 can suppress the back-and-forth swinging by a swing-preventing member 157 that can sandwich the work W on the table 149 from the front-rear direction (Y-axis direction).

  Therefore, when performing laser processing on the part of the long product WG that protrudes greatly from the laser processing machine 3 to the other end in the left-right direction, it is possible to suppress vibration. Therefore, accurate laser processing can be performed. In addition, when the front end side of the long product WG reaches the carry-out conveyor 19, the height position of the support roller 205 in the discharge conveyor 19 is positioned in advance to a height position that supports the circumscribed circle C1 of the product WG. it can. Further, since the roller units 207A to 207C in the carry-out conveyor 19 are provided with the steadying member 241, it is possible to suppress the shaking on the leading end side of the long product WG.

  When the product WG is cut and separated, the product WG is transferred to the carry-out conveyor 19 side by the support table 149 while being clamped by the product clamp 155. Thereafter, the product WG on the support table 149 is pushed and transferred onto the carry-out conveyor 19 by the product moving member 199 in the work pusher device 189. The product WG transferred to the discharge conveyor 19 is discharged and dropped onto the product stocker 21 arranged on the front side of the carry-out conveyor 19 in the Y-axis direction.

  As can be understood from the above description, according to the present embodiment, the conveyor device 13 that supports the product WG to be laser processed by the laser processing machine 3 is provided. The support table 149 provided in the conveyor device 13 is configured so that when the laser processing is performed while rotating the deformed workpiece having a non-circular cross section around the longitudinal axis, the rotation angle of the deformed workpiece is rotated. The vertical position is adjusted corresponding to the above.

  Therefore, the support table 149 can be held so as to always support the lowermost position of the work (the position of the lowermost part of the work). Therefore, the support table 149 can come into contact (contact) with the workpiece, thereby suppressing vertical deflection.

  Further, the support table 149 is provided with a pair of steadying members capable of sandwiching the workpiece from a direction orthogonal to the longitudinal direction of the workpiece so that the workpiece can be moved away from each other. It can be suppressed.

DESCRIPTION OF SYMBOLS 1 Laser beam apparatus 3 Laser processing machine 5 Processing machine main body 7 Rotating chuck 9 Laser processing head 11 Work carry-in apparatus 13 Conveyor apparatus 15 Work shooter 17 Product box 19 Discharge conveyor 21 Product stocker 23 Guide frame 25 Chuck apparatus 31 Holding claw (gripping member) )
37 Optical Sensor 45 Work Conveying Device 47 Work Conveying Conveyor 51 Conveying Chain 53 Curved Surface Support Chain Link 55 Curved Surface Supporting Portion 57 Rolling Restriction Chain Link 61 Rolling Restriction Portion 65 Plane Support Portion 67 Position Restriction Chain Link 69 Work Conveying Means 79 Work Support Part 83 Curved surface support part 85 Flat surface support part 87 Inclination guide 89 Work detection sensor 93 Work support device 95 Work receiving part 99 Slide body 107 Slide member 113 Support roller 115 Clamp member 121 Stabilization member 131 Concave surface 133 Work tip part detection means 135A Laser projector 135B Reflector 137 Base 141 Slide base 145 Main frame 149 Support table 151 Support roller 155 Product clamp 157 Stabilizing member (spindle roller)
165 Servo motor 189 Work pusher device 199 Product moving member 203 Base mount 207A, 207B, 207C Roller unit 209A, 209B, 209C Pantograph mechanism 221 Elevating frame 223 Pantograph actuator 235 Buffering means 243A, 243B, 243C Product pushers 245A, 245B, 245C Reciprocating actuator

Claims (8)

A work loading device is provided on one side of the laser machining position by the laser machining head to carry a long workpiece with respect to the laser machining position, and the product after laser machining is supported on the other side of the laser machining position. A laser processing apparatus provided with a conveyor device,
The conveyor device includes a main body frame disposed on the other side of the laser processing position, and a support table capable of supporting a processed product processed at the laser processing position is provided on the main body frame. The support table can be moved in the direction of approaching and moving away and can be moved up and down, and the support table performs laser processing while rotating a deformed material having a non-circular cross-section around the longitudinal axis. The laser processing apparatus is characterized in that the vertical position is adjusted in accordance with the rotation angle of the deformed material.   2. The laser processing apparatus according to claim 1, wherein the support table is a pair capable of sandwiching a workpiece from a direction orthogonal to a longitudinal direction of the workpiece in order to suppress vibration due to rotation of the workpiece during laser machining of the workpiece. A laser processing apparatus comprising the above described steady rest members so as to be close to and away from each other.   3. The laser processing apparatus according to claim 1, wherein a pair of product clamps capable of clamping a product are provided in the vicinity of an end of the support table on the laser processing position side so as to be able to approach and separate from each other. Laser processing equipment.   The laser processing apparatus according to claim 1, 2, or 3, wherein a guide frame parallel to the moving direction of the support table is provided at a position close to the support table, and a slider provided movably on the guide frame. A product moving member for moving the product on the support table in a direction away from the laser processing position is provided, and the product moving member is provided so as to freely enter and exit the product support surface of the support table. A laser processing apparatus characterized by the above.   The laser processing apparatus according to any one of claims 1 to 4, further comprising a work shooter that is freely movable between the main body frame and the laser processing position in the conveyor device, and a product or scrap dropped from the work shooter. A laser processing apparatus comprising a product box that can be stored in a position close to the work shooter.   6. The laser processing apparatus according to claim 5, wherein the work shooter is provided so as to be movable to a position corresponding to the product box and tiltable to drop a product or scrap.   The laser processing apparatus according to any one of claims 1 to 6, further comprising a carry-out conveyor that supports the product in a downstream manner on the opposite side of the laser machining position with the conveyor device in between. A pantograph mechanism that moves up and down the roller unit in the conveyor is provided, and a slider that is reciprocally movable to move the pantograph mechanism up and down and a lower end portion of the operating link in the pantograph mechanism are connected to each other via a buffering means. The laser processing apparatus characterized by the above-mentioned. 8. The laser processing apparatus according to claim 7, wherein the buffer means is composed of an air damper having a piston rod that can be freely moved in and out.