JPH01317697A - Laser beam machine having dust collector - Google Patents

Abstract

PURPOSE:To increase an laser beam processing speed by parting a pallet to plural spaces, forming 1st, 2nd apertures to both side parts of the respective spacers, feeding air from the 1st aperture corresponding to a laser torch and sucking the air, etc., from the 2nd aperture. CONSTITUTION:The pallet 30 is partitioned to the plural spaces by partition plates 35 in the moving direction of a moving base 13 having the laser torch 17. The 1st aperture 38 is formed to the one side part of the respective spacers 36 and the 2nd aperture 37 to the other. The air is sent from the 1st aperture 38 corresponding to the laser torch 17 and the air, etc., are sucked from the 2nd aperture 37 by a dust collector 45. The laser beam processing speed is increased in this way.

Description

[Detailed Description of the Invention] <Industrial Application Field> □ The present invention relates to a laser processing machine equipped with a dust collector that sucks gas and dust.

<Prior art> As a two-dimensional laser processing machine, for example, Japanese Patent Laid-Open No. 62-187
There is one shown in Publication No. 590.

This machine supports the workpiece by moving a table that opens vertically in the horizontal direction, and moving the laser torch in the horizontal direction perpendicular to the table's moving direction.The gas and dust generated during processing are removed from the table. A dust collection pipe is fixed to the machine body at the bottom, and a dust collection port is provided at the tip of the dust collection pipe at a position corresponding to the laser torch and opens long and thin in the direction of movement of the laser torch, and the dust is sucked through the dust collection port.

<Problems to be Solved by the Invention> The laser processing machine described above is of a type in which the table is moved in a direction perpendicular to the direction of movement of the laser torch, and the dust collection port is fixed to the machine body. The laser torch can always be matched. However, with the type that moves the laser torch in two directions orthogonal to each other in a horizontal plane, when the dust collection port is fixed, the dust collection port and laser torch do not always correspond to each other, and when the dust collection port and laser torch are separated horizontally. had a problem with gas and dust not being sucked out.

<Means for Solving the Problems> The present invention has been made to solve the above-mentioned problems, and includes a plurality of partition plates arranged on two side plates on the leg side of the pallet at intervals in the direction of movement of the moving platform. A first opening that communicates with each space partitioned by a plurality of partition plates is formed in the side plate on one leg side of the pallet, and the other side of the pallet is A second opening communicating with each space partitioned by a plurality of partition plates is formed in the side plate on the leg side of the moving table, and air is blown to the first opening corresponding to the laser torch in one leg of the moving table. A suction port for suctioning air, etc. from a second opening corresponding to the laser torch is formed in the other leg of the movable table in approximately the same shape as the second opening, and air is supplied to the suction port. It is connected to a suction dust collector.

Effect> When the moving table and the processing head are moved and the laser torch is irradiated with a processing laser beam toward the workpiece, the workpiece supported on the barent sword head is processed. Air is sent from the blower to the first opening corresponding to the laser torch, air is sucked in from the second opening corresponding to the laser torch, and the first opening is provided in the space between the partition plates corresponding to the laser torch. A flow of air is generated from the opening toward the second opening. As a result, gas and dust generated during processing are sucked into the dust collector from the suction port along with the air flow.

<Example> Embodiments of the present invention will be described below based on the drawings.

In FIG. 1, 10 is a bed, and this bed 10
A recess 11 is formed in the center, and guide rails 12 are installed on both sides as shown in FIG.

A movable table 13 is guided so as to be horizontally movable on the guide rail 12, and this movable table 13 is made up of two leg parts 14 and a crossbeam part 15 connecting the upper parts of these leg parts 14.

A processing head 16 is guided by the crossbeam 15 so as to be movable in a horizontal direction perpendicular to the moving direction of the movable table 13, and a laser torch 17 is attached to the lower surface of the processing head 16.

The movement of the moving table 13 and the processing head 16 is carried out by a servo motor 2.
This is done by rotating the ball screws 22, 23 through 0°21.

A plurality of pillars 25 are erected in the recess 11, and two supporting members 26 of the circuit are stretched between these pillars 25 in parallel to the moving direction of the movable table 13. Two supporting members 2
6, rails of known circuits are installed parallel to the support member 26, and these rails support the pallet 30.
is placed movably. As shown in FIGS. 2 and 3, the pallet 30 includes a square bottom plate 31, a side plate 32 erected on the side of the bottom plate 31, and a U-shaped moving platform 13. Brackets 33 fixed to the bottom plate 31 at intervals in the moving direction of the brackets 3
3, which are fixed at intervals in the direction of movement of the laser torch 17, and a partition plate 35 which extends between the brackets 33 from the bottom plate 31 to near the top of the mount 34 and extends in the direction of movement of the laser torch 17. . The partition plates 35 are installed at intervals in the moving direction of the moving table 13, and the partition plates 35 divide the inside of the pallet 30 into a plurality of spaces 36 that open upward. The right side plate 32 in FIG. 1 has a second opening 3 communicating with each space 36.
7, a first opening 38 communicating with each space 36 is formed in the left side plate 32. A third opening 31a is formed in the bottom plate 31 by cutting out a position other than the support member 26. Each opening 31a, 37.38 is partitioned by a partition plate 35.

A duct 40 is fixed to the right leg 14 in FIG. 1 at a position corresponding to the laser torch 17.
A suction port 41 having the same width as the width between the partition plates 35 is formed on the pallet 30 side.

A cylindrical connection port 42 is formed on the side opposite to the suction port 41 of the duct 1-40, and one end of an exhaust hose 43 is fitted into this connection port 42. The side of the moving platform 13 and the bed 10
Both ends of a curved cable 44 are connected to the side surfaces of the exhaust hose 43, and the exhaust hose 43 is passed through the cable 44. The other end of the exhaust hose 43 is connected to a dust collector 45, and the air in the space 36 between the partition plates corresponding to the suction port 41 is sucked in by the dust collector 45.

A rectangular blast pipe 50 is fixed to the left leg 14 in FIG.
is fixed, and a plurality of elongated suction ports 52 are formed in the suction plate 51 in the direction of movement of the movable table 13.

A blower plate 53 is fixed to the end of the blower pipe 50 on the pallet 30 side, and a circular air outlet 54 is formed in the blower plate 53. An H-shaped bracket 55 is attached to the suction plate 51 side of the air pipe 50, and a motor 56 is attached to this bracket 55. The motor 56 has a cylindrical portion 56
a rotates, and a fan 57 is attached to this cylindrical portion 56a. A blower 58 is constituted by the blower pipe 50, the suction plate 51, the blower plate 53, the bracket 55, the motor 56, and the fan 57. This air blower 58 is operated by rotating the fan 57 with the motor 56.
Air is sucked in from the opening 2 and sent out from the air outlet 54 to the space 36 between the partition plates 35 corresponding to the laser torch 17.

A plate 60 is attached to each support column 25, 26, a support member 62 equipped with a roller 61 is attached to the upper part of each plate 60 in parallel to the moving direction of the moving table 13, and a regulating member 63 is attached to the lower part of the plate 60. is attached parallel to the support member 62.

A belt 64 made of metal plates connected together is wound around the support member 62 and the regulation member 63, and this belt 64 is attached to the plate 6o.
It is designed to be driven by a drive motor 65 attached to. Supporting member 62, regulating member 63, and belt 6
4 and the drive motor 65 constitute a conveyor 66. A collection box 67 is installed at the end of the conveyor 66 to collect cut pieces of the cut workpiece W.

A processing laser beam is guided to the laser torch 17 from a laser oscillator of a circuit installed outside the bed 10 via a laser beam path tube. Further, assist gas is introduced to the laser torch 17 via a hose from a gas cylinder in a circuit installed outside the bed 10.

Next, the operation will be explained based on the above-described configuration. Place the workpiece W on the kenzan 34, and turn the servo motor 20.21.
Activate. As a result, the movable table 13 moves in the horizontal direction, and the processing head 16 moves in a direction perpendicular to the moving direction of the movable table 13.

A processing laser beam is emitted from the laser torch 17 toward the workpiece W, and at the same time, assist gas is blown toward the workpiece W to cut the workpiece W. The cut pieces of the workpiece W fall onto the conveyor 66 and are carried by the conveyor 66 to a collection box 67.

In the space 36 corresponding to the laser torch 17, a blower 58 and a dust collector 45 generate a flow of air from the first opening toward the second opening 37, removing the assist gas and dust ( Iron powder) is sucked into the dust collector 45 via the duct 40 and exhaust hose 43 along with the air flow. Since the air flow is generated only in the space 36 corresponding to the air outlet 54 and the duct 40, that is, the space 36 corresponding to the laser torch 17, the blower 58 and the dust collector 45 can be downsized. With just the dust collector 45,
As the distance from the suction port 41 increases, the power to suck in dust (iron powder), that is, the flow of air decreases.

By providing the blower 58, the flow of air can be made substantially constant regardless of the position in the moving direction of the processing head 16. Furthermore, the workpiece W can be cooled by the air sent from the blower 58 and heating of the workpiece W can be prevented, so that the output of the processing laser beam can be increased and the cutting speed can be increased.

<Effects of the invention> As described above, the present invention supports a bed so as to be horizontally movable, and has a movable base consisting of two legs and a crossbeam that connects these legs. A pallet that supports the machining head movably in the horizontal direction perpendicular to the direction of movement of the table, and is equipped with a side plate connected in a square shape when viewed from above and a sword mount that supports the workpiece, is placed on the bed, and a pallet is placed on the bed. A laser processing machine that performs laser processing on a workpiece using a processing laser beam irradiated from a laser torch attached to a processing head, wherein a plurality of partition plates are installed on two side plates on the leg side of the pallet in the direction of movement of the moving table. a first opening that communicates with each space partitioned by a plurality of partition plates is formed in the side plate on one leg side of the pallet; A second opening communicating with each space partitioned by a plurality of partition plates is formed in the side plate on the other m side of the pallet, and a first opening corresponding to the laser torch is formed in one leg of the moving table. A blower for blowing air is provided, and a suction port for sucking air, etc. from a second opening corresponding to the laser torch is formed in the other leg of the movable table in approximately the same shape as the second opening. Since the structure is such that a dust collector that sucks air is connected to the dust collector, air flows from the first opening to the second opening only in the space corresponding to the suction port, that is, the space corresponding to the laser torch.
This provides the effect that gas and dust can be reliably sucked no matter where the laser torch is positioned in the direction of movement of the processing head. Furthermore, since the air flow is generated only in the space corresponding to the laser torch, it is possible to reduce the size of the blower and collector B. Furthermore, since the workpiece is cooled by the air flow generated by the blower, heating of the workpiece can be suppressed, and the output of the processing laser beam can be increased to increase the machining speed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall perspective view of a laser processing machine, FIG. 2 is an enlarged cross-sectional view taken in the direction of movement of the processing head 1, and FIG. −■ line cross-sectional view. DESCRIPTION OF SYMBOLS 10...Bed, 13...Moving table, 14...Legs, 15...Cross beams, 16...Processing gear, 17...
・Laser torch, 30...Pallet, 3I...Bottom plate, 31a...Third opening, mouth, 32...Side plate, 3
4...Mt. Tsurugi, 35...Partition plate, 36...Space,
37... second opening, 38... first opening, 4
0... Duct, 41... Suction port, 43... Exhaust hose, 45... Dust collector, 50... Air pipe, 56...
- Motor, 57...Fan, 58...Blower.

Claims (1)

[Claims] (1) A moving table consisting of two legs and a crossbeam connecting these legs is horizontally movably supported on the bed, and a processing head is attached to the moving table in a horizontal direction perpendicular to the moving direction of the moving table. A pallet is placed on the bed, and has side plates that are connected in a rectangular shape when viewed from above, and a sword mount that supports the workpieces. A recovery conveyor that collects the cut workpieces is moved below the pallet. A laser processing machine is provided on a bed in the same direction as the movement direction of the table, and performs laser processing on a workpiece on a crest using a processing laser beam irradiated from a laser torch attached to a processing head, wherein the legs of the pallet A plurality of partition plates are attached to the two side plates of the pallet so as to be parallel to the moving direction of the processing head at intervals in the moving direction of the moving platform, and a plurality of partition plates are attached to the side plate of one leg side of the pallet. a first opening communicating with each space partitioned by a plurality of partition plates; a second opening communicating with each space partitioned by a plurality of partition plates; a second opening communicating with each space partitioned by a plurality of partition plates; A blower for blowing air to a first opening corresponding to the laser torch is provided on one leg of the movable table, and a suction port for sucking air etc. from a second opening corresponding to the laser torch is provided on the other leg of the movable table. formed in substantially the same shape as the second opening;
A laser processing machine equipped with a dust collector, characterized in that a dust collector for sucking air is connected to this suction port.