JPS6030596A - Laser working device - Google Patents

Abstract

PURPOSE:To provide a titled device which performs efficiently laser working by turning >=2 units of work tables to an attaching station, the main table of a working machine, a detaching station and again to the attaching station by means of conveyor mechanisms. CONSTITUTION:A work table 5 in an attaching station A is attached with parts fed by a conveyor 53 and is fed to the clamping device 10 of a main table 2 by a conveyor 42 and a freely liftable conveyor 41 of a working machine 1, by which the work table is clamped. The table 5 is subjected to prescribed laser working by the movement of the main table 2 in the X-direction and the movement of a laser beam in the Y-direction. The table 5 after working is released from the device and is removed and fed by the conveyors 41, 43 to a station B. The parts are delivered by a conveyor 54. The table having no more parts is again returned to the station A by the conveyors 51, 50, 52. The operation is efficiently and smoothly accomplished by disposing >=2 units of the tables 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laser processing apparatus for laser processing a workpiece using a laser beam.

Conventional laser processing machines place the workpiece on a main table and move the laser nozzle that irradiates the laser in the X-Y direction, or move the main table in the X direction and the laser nozzle in the Y direction. By doing so, the workpiece is subjected to laser processing.

However, in conventional laser processing machines, the workpiece is placed directly on the main table of the laser processing machine, and especially when the workpiece is large, the workpiece is attached to the main table. Alternatively, it takes a long time to remove it, making the use of an expensive laser processing machine inefficient.

In view of such circumstances, the present invention enables a work table to be removably attached to the main table of a laser processing machine, and also allows a workpiece to be placed on the work table, thereby allowing the laser processing machine to To provide a laser processing device that can attach a workpiece to another work table in parallel with processing, thereby increasing the usage efficiency of the laser processing device. It was made so that it could be done.

The present invention will be described below with reference to the illustrated embodiment. In FIG. 1, a laser processing machine 1 has a main table 2 that is moved in the
The main table 2 and the laser nozzle 3 are driven by a drive mechanism (for example, a ball screw mechanism).
FIG. 6 shows the drive mechanism 4 for the main table 2. ) in the X and Y directions, respectively. A work table 5 is detachably attached to the main table 2, and a workpiece (not shown) can be attached to the work table 5.

The laser nozzle 3 is vertically moved up and down by a lifting mechanism (not shown) similar to the drive mechanism 4, and by moving in the three directions, the workpiece on the work table 5 can be laser processed. . The laser beam processing machine 1 having such a configuration is well known in the art except that the work table 5 is detachably attached to the main table 2, so further explanation of the specific configuration will be omitted.

FIGS. 2 and 3 show a clamp device 10 for detachably mounting the work table 5 on the main table 2.
Two are provided at required positions on the bottom surface of the (see Figure 1). The clamping device 10 includes a stepped cylinder 11 fixed vertically to the lower surface of the main table 2, and a stepped cylinder 11 fixed to the lower surface of the main table 2 in the vertical direction.
The first piston 12 is provided with a stepped first piston 12 that is slidably fitted in the inside of the piston 1, and the tip of the first piston 12 is a truncated conical part 13. On the other hand, a conical recess 14 into which the conical portion 13 of the first piston 12 is fitted is formed at a position of the work table 5 corresponding to the position where the clamp device 10 is provided. Clamp device IO
By fitting the conical part 13 into the recessed part 14,
The position of the work table 5 with respect to the main table 2 can be determined.

A hole 15 along the axial direction is bored in the base of the first piston 12, and a second piston 16 is slidably fitted into the hole 15. This second piston 16 is provided with rods 17 and 18 on the upper and lower sides, and the upper rod I7 slidably passes through the shaft portion of the first piston 12, and is used to fix the work table 5 to its upper end. An engaging member 18 is provided.

This engaging member 19 is formed into a trapezoidal shape, and a housing groove 20 in which the trapezoidal engaging member 19 is housed is formed in the conical portion 13 of the first piston 12. 18 is arranged such that the surfaces of the inclined portions on both sides thereof substantially coincide with the surface of the conical portion 13. Further, a slit 21 is formed in the conical recess 14 formed in the work table 5, through which the engaging member 19 can pass while facing in a predetermined direction, and the engaging member 18 is inserted into the slit 21.
1 and then rotated 90 degrees to make it impossible for the retaining member 19 to pass through the slit 21, thereby making it possible for the retaining member 18 to press the upper surface of the clamp portion 22 of the work table 5. Please make it possible.
X Ru. At this time, by slidably engaging the key 23 provided on the surface of the first piston 12 with the key groove 24 of the cylinder 11, the engaging member 18 is moved to the first piston 1.
When positioned in the storage groove 20 of No. 2, the engaging member 18 is always oriented in the above-mentioned predetermined direction.

A rocking plate 30 is rotatably bubble-sealed at the bottom of the cylinder 11, and the lower rod 18 of the second piston 16 slidably passes through the cylinder 11 and the rocking plate 30 and projects to the outside. and a pin 31 is attached to its lower end. As shown in FIG. 4, the swing plate 30 has a pair of arc-shaped grooves 32, and is fixed in the cylinder 11. It allows it to rotate. Also,
A hole 34 through which the rod 18 passes is bored in the center of the groove 32, and engaging grooves 35 into which the pin 31 is fitted are connected to both sides of the hole 34.

Furthermore, inside the cylinder 11 there is a pair of pressure chambers 3 above and below.
6.37 is formed, especially the space between the upper pressure chamber 3 [* is the series]' step part of the tick 1 and the step part of the first screw 12, the second piston 1B and the first (screw)・n 12 holes 1
5 and a communication hole 38 formed in the first piston 12 that communicates the space between the upper end surface of the first piston 5 and the inner space.

Therefore, according to the clamp device 10 having the above configuration, the work table 5 is When it is carried onto the main table 2 and roughly positioned, hydraulic pressure is supplied into the lower pressure chamber 37 from a fluid circuit (not shown). Then, the first piston 12 and the second piston 16 start to rise, and the conical part 13 of the first piston 12 is press-fitted into the concave part 14, and the axis of the conical part 13 and the axis of the conical concave part 14 are aligned. The positions of the work table 5 with respect to the main table 2 are thereby determined.

When the second piston 16 continues to rise and the engagement member 18 at its tip passes through the slit 21 of the recessed part 14 and projects onto the upper surface of the work table 5, at the same time, the bottle 31 of the lower rod 18 swings. It enters into the engagement groove 35 of the moving plate 30. Then, the swing plate 30 is rotated 90 degrees by a cylinder device (not shown), and the second piston 16 and the engagement member 19 are thereby rotated through the pin 31 that is engaged with the engagement groove 35 of the swing plate 30. is rotated by 90 degrees (Fig. 2(b), Fig. 3(b)). In this state, the fluid circuit is switched and hydraulic pressure is introduced into the upper pressure chamber 36, which causes the second piston 1
6 and the engaging member 18 are pressed down, the engaging member 18 presses the work table 5 to the main table 2, and the clamping of the work table 5 is completed (see FIG. 2).
C), Figure 3 (C)).

On the other hand, when releasing the clamp on the work table 5,
First, hydraulic pressure is supplied to the lower pressure chamber 37 to raise the engaging member 19, and in this state, the swing plate 30 is rotated 90 degrees in the opposite direction to the double series. When hydraulic pressure is supplied to 36, the second piston 16 and the first piston 12 descend and return to the initial state. In this state, it is clear that the work table 5 can be moved relative to the main table 2.

However, in this embodiment, a conveying device 40 is used to circulately transport the work table 2 in a horizontal plane from the upper part of the main table 2 of the laser processing machine 1 to its surroundings.
has been established. As shown in FIGS. 5 and 6, this conveyance device 40 includes an elevating conveyor 41 arranged parallel to the moving direction of the main table 2;
A fixed conveyor 42. is arranged on the same straight line at the front and back positions of
43. The fixed conveyors 42 and 43 are provided at the same height position higher than the top surface of the main table 2, and the elevating conveyor 41 is at the same height position as both fixed conveyors 42 and 43 in its raised position, and the main table is in its lowered position. Work table 5 is lower than table 2.
can be placed on the main table 2.

Each of the conveyors 41, 42, and 43 has a pair of left and right linear frames 44, and rollers 4 provided on each frame 44.
Each roller 45 has a flange 46 at its end so that the work table 5 can be conveyed in a straight line. And the above A down conveyor 41
A frame 44 is swingably mounted on both sides of the base 47 of the Harasa processing machine 1 via an arm 4B, and the vertical conveyor 41 can be raised and lowered by a cylinder device 48.

Furthermore, as shown in FIG.
．． A fixed conveyor 50 is provided parallel to the fixed conveyor 43, the height of which is the same as that of the fixed conveyor 42.43, and the length of which corresponds to both ends of each fixed conveyor 42.43. The fixed conveyors 42 and 50 and the fixed conveyors 43 and 50 are connected by lifting conveyors 51.52 disposed perpendicularly thereto, and these lifting conveyors 51.52 are connected by lifting mechanisms (not shown). This allows the conveyor to be lowered to a higher raised position and lower lowered position than the fixed conveyor 42, 43, 50.

Furthermore, above the fixed conveyor 42 is a mounting work station A for mounting the workpiece on the work table 5.
A supply device 53 for supplying workpieces is provided adjacent to the mounting work station A. On the other hand,
A removal work station B is provided on the fixed conveyor 43 for removing the workpiece that has been laser-processed from the workpiece team 5, and a workpiece delivery device 54 is provided adjacent to the removal work station B.

In the above configuration, at least two
In the state shown in FIG. 1, one work table 5 is fixed to the main table 2 of the laser processing 111, and while being transported by the main table 2 in the X direction, Laser processing is performed using laser light from a laser nozzle 3 that moves in the direction.

During this time, the other work table 5 is located at the mounting work station A and receives the workpiece from the supply device 53, and the work is being mounted on the work table 5.

Next, in the state where the workpiece has been mounted on the work table 5 at the mounting work station A,
When the laser processing machine 1 finishes processing the workpiece on the other work table 5, the clamp device 1O is activated and the connection between the main table 2 and the work table 5 is released. In this state, the elevating conveyor 41 is raised to raise the work table 5 on the main table 40, so that the work table 5 can move freely on the elevating conveyor 41, and from above the elevating conveyor 41. It is conveyed onto a fixed conveyor 43.

At the same time, the work table 5 on the installation work station A is transferred to the main table 2 of the laser processing machine L.
When the work table 5 is carried upward and the rough positioning of the work table 5 is performed, the elevating conveyor 41 is lowered. As a result, when the work table 5 is placed on the main table 2, the work table 5 is clamped onto the main table z by the clamp device 10, and laser processing is started.

On the other hand, from the work table 5 discharged to the removal work station B, the workpiece that has been laser-processed at the removal work station B is removed, and the workpiece is carried out to the outside by the carry-out device 54. Then, the work table 5 from which the workpiece has been removed is lifted up from the fixed conveyor 43 by the lifting of the lifting conveyor 51, and is conveyed onto the fixed conveyor 50 by the lifting conveyor 51, and then the lifting conveyor 51 is lowered and placed on the fixed conveyor. 50, and similarly conveyed from this fixed conveyor 50 to the above-mentioned installation work station A via the elevating conveyor 52. Then, at the attachment work station A, a new workpiece is attached to the work table 5 during laser processing by the laser processing machine I.

In the above embodiment, the work table 5 is connected to the transport device 4.
0 for circular conveyance in one direction, however, the present invention is not necessarily limited to this, and various configurations may be used. For example, the conveyance device 60 of the embodiment shown in FIG.
53 and a carry-out device 54 as well as an evacuation station D for temporarily evacuation of the work table 5 on which the workpiece is attached. Even with such a configuration, the same effects as in the above embodiment can be obtained. It is clear that

As described above, according to the present invention, it is possible to attach a workpiece to another work table while laser processing is being performed by a laser processing machine. This has the effect of increasing the efficiency of use.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing one embodiment of the present invention, and FIG. 2 (
a), (b), and (c) are enlarged sectional views of the clamping device 10 in different states, and FIG. 3(a),
(b). (e) are respectively shown in Fig. 2 (a), (b), (c
), Figure 4 is a perspective view of the main part of Figure 2(a).
A sectional view taken along the line, the fifth factor is a side view showing the main part of the conveyance device 4o, FIG. 6 is a view taken in the direction of the X direction in FIG. 5, and FIG. 7 is a schematic plan view showing another embodiment of the present invention. It is a diagram. l...Laser processing machine 2...Main table 5...
・Work table 10... Clamp device 40.60
... Conveyance device 41 ... Lifting conveyor 48 ... Cylinder devices A, B, C ... Work station Figure 3 (a) (b) (C)

Claims (1)

[Claims] A work table on which a workpiece can be detachably attached,
This work table is detachably attached, and a laser processing machine for laser processing the workpiece taken on the work table is installed at a remote location, and At least one work station for attaching the workpiece; and a transport device for transporting the work table to the laser processing machine and the work station, the transport device including one of the at least two work tables for laser beam processing. A laser processing device characterized in that a laser processing device is supplied to a processing machine and the other is supplied to a work station.