JPH04356394A - Laser beam machine - Google Patents

Abstract

PURPOSE:To prevent a fact that an end edge of a work is caught by a cutting plate or hangs down, to improve the dust collection efficiency, and also, to easily take out a product, in the laser beam machine of a uniaxial work/uniaxial light moving type. CONSTITUTION:In the laser beam machine 1 of a uniaxial work/uniaxial light moving type, a cutting plate 21 is provided so as to be freely movable synchronizing with a laser beam machining head 11, a cover 23 is provided on both sides of the cutting plate 21, and also, the cutting plate 21 is freely inclinable, and moreover, a steel belt 111 is stuck onto the surface in the longitudinal direction of the cover 23.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-axis workpiece single-axis optical movement type laser processing machine.

0002

[Prior Art] In a conventional single-axis workpiece single-axis optical movement type laser processing machine, a carriage equipped with a workpiece clamp for clamping the workpiece is moved in the X-axis direction, and a laser processing head is moved in the Y-axis direction. It's forcing me. In addition, a processing groove extending in the Y-axis direction is formed in the center of the work table, which is located directly below the laser processing head, and a laser beam is irradiated from the laser processing head to the processing groove to achieve the desired position of the workpiece in the processing groove. Laser processing is performed at the location.

[0003] Further, below the machined groove, there is a Y
A work shooter having approximately the same size in the axial direction is provided so as to be freely tiltable.

0004

[Problems to be Solved by the Invention] However, in the laser processing machine having the above-described configuration, when the workpiece is supported on the worktable and moved in the X-axis direction by being clamped by the workpiece clamp, the edge of the workpiece is not machined. There were problems with the workpiece getting caught in the groove or hanging down.

[0005]Furthermore, since the dust generated when laser processing a workpiece is collected in a dust collection box connected to a tiltable workpiece chute, the dust collection efficiency is poor.
Furthermore, there was a problem in that it was very troublesome to take out the processed product.

[0006]An object of the present invention is to provide a laser processing machine that prevents workpieces from getting caught or sagging, improves dust collection efficiency, and facilitates product removal in order to improve the above-mentioned problems. It's about doing.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a single-axis workpiece single-axis optical movement type laser processing machine, and provides a cutting plate movable in synchronization with a processing head. This cutting plate is characterized in that covers are provided on both sides of the cutting plate.

[0008] Furthermore, in the laser processing machine, the cutting plate is tiltable, and a thin film-like member is attached to the longitudinal surface of the cover.

[0009]

[Operation] By adopting the laser processing machine of this invention, the cutting plate is moved in the same direction in synchronization with the processing head that is movable in the Y-axis direction, and the covers provided on both sides of the cutting plate are also moved in the same direction. Since the workpiece is moved, it is possible to prevent the workpiece from getting caught or hanging, which conventionally occurs.

[0010] Furthermore, since the cutting plate is movable in the Y-axis direction and is provided so as to be tiltable, it becomes easy to take out the product and the dust collection efficiency is improved.

[0011]Furthermore, since a thin film-like member is attached to the surface of the cover in the longitudinal direction, there are no streaks on the cover and no gaps are formed at the bends, thereby preventing scratches on the workpiece. At the same time, the risk of the work being bitten is eliminated.

0012

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 4, the laser processing machine 1 is equipped with a C-shaped frame 3, and support frames 5R and 5L are provided at the bottom of both sides of a lower frame 3D of this frame 3. Work tables 7R and 7L are provided on the support frames 5R and 5L, extending in the X-axis direction (left-right direction in FIG. 4). One end side of the upper frame 3U in the frame 3 (left end side in FIG. 4)
A laser oscillator 9 is integrally attached to the.

[0014] Also, inside the upper frame 3U, there is a laser processing head 11 (processing head) that is movable in the Y-axis direction.
is provided. This laser processing head 11 is equipped with a bend mirror 13 and a condensing lens 15. Furthermore, a bend mirror 1 is provided on the right end side of the upper frame 3U.
7 is provided.

A groove 19 extending in the Y-axis direction is formed in a portion in the X-axis direction between the work tables 7R and 7L. A cutting plate 21 that is movable in the Y-axis direction is provided in this groove 19, and a cover 23 is endlessly wound around both sides of this cutting plate 21.

A plurality of support balls 25 for supporting workpieces are rotatably supported on the worktables 7R and 7L.

A carriage base 27 extending in the X-axis direction is integrally attached to one end side (rear end side in FIG. 4) of the work tables 7R and 7L. This carriage base 27 is already provided with a carriage 29 that is movable in the X-axis direction by a known ball screw, drive motor, or the like. A plurality of work clamps 31 for clamping the work W are attached to the carriage 29.

With the above configuration, the work tables 7R, 7
A desired position in the X-axis direction of the workpiece W supported on L and clamped by the workpiece clamp 31 is positioned on the cutting plate 21 by moving the carriage 29 in the X-axis direction. Further, the laser processing head 11 is moved in the Y-axis direction to position the workpiece W positioned on the cutting plate 21 to a desired position.

In this state, the laser beam LB emitted from the laser oscillator 9 is bent by the bend mirror 17 , further bent by the bend mirror 13 , and condensed by the condenser lens 15 . The laser beam LB focused by this lens 15 is directed to the workpiece W on the cutting plate 21.
It will be irradiated and laser processed.

One end of a flexible hose 33 is connected to the lower part of the cutting plate 21, and the other end of the flexible hose 33 is connected to the work table 7R.
It is connected to a dust collection box 35 provided inside.

As shown in FIG. 1, support plates 37R and 37L are provided in the support frames 5R and 5L, and guide blocks 39R and 39L are mounted on the support plates 37R and 37L, along the Y axis. It is provided extending in the direction. Guide rails 41R and 41L are provided on the guide blocks 39R and 39L. These guide rails 41R, 41L have sliding members 43R, 43.
An inclined plate 45 is provided via L, and the cutting plate 21 is attached to this inclined plate 45.

A nut member 47 is integrated with the lower part of the sliding member 43R, and a ball screw 49 screwed into the nut member 47 extends in the Y-axis direction to connect the lower frame 3.
It is rotatably supported at the front and rear of D. A driven sprocket 51 is attached to one end of this ball screw 49.

On the other hand, as shown in FIG. 1, a support plate 53 extending in the Y-axis direction is attached to the inner surface of the upper frame 3U of the C-shaped frame 3. In FIG. 1, two parallel guide rails 55 extending in the Y-axis direction are provided on the left side surface. This guide rail 55 has a sliding member 57.
The laser processing head 11 is provided via the. Furthermore, at the tip (lower end) of this laser processing head 11 is a nozzle 5 for irradiating the workpiece W with the laser beam LB.
9 is provided.

A nut member 61 is attached to the upper right end of the laser processing head 11, and a ball screw 63 screwed into the nut member 61 connects to the upper frame 3U.
It is rotatably supported. Sprockets 65, 67 are attached to the ball screw 63 at one end of the upper frame 3U.
are fitted.

A drive motor 71 such as a servo motor is provided in the left side wall of the upper portion 3U, for example in FIG. 1, via a motor base 69. This drive motor 71
A driving sprocket 73 is attached to the output shaft of. A chain 75 is wound around this drive sprocket 73 and the sprocket 65. Further, a chain 77 is wound around the sprocket 67 and the sliding sprocket 51.

With the above configuration, when the drive motor 71 is driven, the output shaft, drive sprocket 73, and chain 75
, the ball screw 63 is rotated via the sprocket 65. This rotation of the ball screw 63 causes the laser processing head 11 to be moved in the Y-axis direction via the nut member 61. Furthermore, the sprocket 67 is rotated by the rotation of the ball screw 63. This rotation of the sprocket 67 causes the ball screw 49 to rotate via the chain 77 and the driven sprocket 51. By rotation of the ball screw 49, the nut member 47, sliding members 43R, 43L are moved via the inclined plate 45, and the cutting plate 21 is synchronously moved in the same direction of the Y-axis direction as the laser processing head 11. .

Therefore, the laser processing head 11 and the cutting plate 21 are moved in the Y-axis direction in synchronization, and the workpiece W clamped by the workpiece clamp 31 is moved by the support balls 25 on the worktables 7R and 7L.
By moving the workpiece W in the X-axis direction while being supported by the workpiece W, laser processing can be performed on a desired position of the workpiece W.

[0028] When performing laser processing on the workpiece W,
Although the workpiece W is moved in the X-axis direction, the edge of the workpiece W can be moved smoothly without being caught on the cutting plate 21 or sagging.

A workpiece shooter pipe 79 for dropping products cut from the workpiece W, and a cylindrical dust collection pipe 81 for suctioning spatter, collected dust, etc. are provided at the lower part of the inclined plate 45. ing. A guide member 83 is attached to one side (the left side in FIG. 1) of the dust collecting pipe 81, and an elevating arm 85 is provided which is guided by the guide member 83 and is movable up and down. A rolling roller 87 is in contact with the lower surface of this lifting arm 85 .

A frame 8 is installed at the bottom of the dust collecting pipe 81.
9 is attached to the frame 89, and a fluid cylinder 91 is swingably supported on this frame 89 by a pin 93. The tip of the piston rod 95 attached to the fluid cylinder 91 is connected to a swing arm 101 which is pivotably supported via a pin 99 to a support block 97 attached to the frame 89.
It is attached to a part of the body with a pin 103. Swing arm 1
The rolling roller 87 is rotatably attached to the tip of the roller 01.

On the other hand, a roller 105 is supported on the upper rear end side (left side in FIG. 1) of the work shooter pipe 79 and extends in the Y-axis direction. groove 107 into which
A plurality of rollers 109 are provided in contact with the upper surface of the lifting arm 85.

With the above configuration, the laser beam LB is directed from the nozzle 59 of the laser processing head 11 to a desired position on the workpiece W.
When the laser beam is irradiated, the workpiece W is processed by the laser beam. At this time, the inclined plate 45, as shown in FIG.
The workpiece W is supported in a horizontal state in the raised position. That is, the piston rod 95 of the fluid cylinder 91 is at the upper limit position.

When the laser processing is finished and the product is discharged, the fluid cylinder 91 is operated to gradually lower the piston rod 95 from the upper limit position, and the swing arm 101 rotates counterclockwise about the pin 99. The lifting arm 85 is guided by the guide member 83 and lowered. As the elevating arm 85 descends by a preset amount, the roller 109 of the inclined plate 45 descends while keeping the horizontal state in contact with the upper surface of the elevating arm 85, and the groove 107 is fitted into the roller 105.

Furthermore, when the fluid cylinder 91 operates and the piston rod 95 descends, the swing arm 101 rotates counterclockwise about the pin 99, and the lifting arm 85 descends to the 2-point position in FIG. At the same time, the inclined plate 45 is inclined to the position indicated by the two-dot chain line using the roller 105 as a fulcrum. Therefore, the cut product can be discharged from the outlet 79A of the work shooter pipe 79 via the inclined inclined plate 45.

Therefore, as the cutting plate 21 moves in the Y-axis direction, the work shooter pipe 7
9 and the dust collection pipe 81 are configured to move in the same direction, it is possible to prevent the workpiece from getting caught or dripping, and to improve the dust collection efficiency.
Furthermore, it is possible to easily take out the product.

A cover 23 is provided before and after the cutting plate 21, and as shown in FIGS. 2 and 3, a thin film-like member such as a steel belt is provided on the surface of the cover 23 in the longitudinal direction. 111 is attached and connected. Therefore, the part indicated by arrow M in FIG. 2 can be prevented from opening,
There is no fear that the workpiece W will be bitten, and if water is used during laser processing, water can be prevented from spilling downward.

It should be noted that the present invention is not limited to the embodiments described above, but can be implemented in other embodiments by making appropriate changes.

[0038]

[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, since the structure is as described in the claims, it is possible to prevent the workpiece from getting caught or hanging. At the same time, it is possible to improve dust collection efficiency. Furthermore, the product can be easily taken out.

[Brief explanation of drawings]

FIG. 1 is an enlarged front cross-sectional view taken along arrow I in FIG. 4, showing the main parts of the present invention.

FIG. 2 is an enlarged view of a section viewed from arrow II in FIG. 4;

FIG. 3 is an enlarged view taken along line III-III in FIG. 2;

FIG. 4 is a perspective view of a laser processing machine according to an embodiment of the present invention.

[Explanation of symbols]

1 Laser processing machine 7R, 7L Work table 11 Laser processing head (processing head) 21 Cutting plate 23 Cover 35 Dust collection box 45 Inclined plate 79 Work shooter pipe 81 Dust collection pipe

Claims (3)

[Claims] [Claim 1] A single-axis workpiece single-axis optical movement type laser processing machine, characterized in that a cutting plate is provided movably in synchronization with a processing head, and covers are provided on both sides of the cutting plate. Laser processing machine. 2. The laser processing machine according to claim 1, wherein the cutting plate is tiltable. 3. The laser processing machine according to claim 1, wherein a thin film member is attached to the surface of the cover in the longitudinal direction.