JPH08206870A - Cover device of laser beam machine - Google Patents

Abstract

PURPOSE: To provide a cover device of a laser beam machine with which workability for a preparatory plan is assured while minimizing a floor space. CONSTITUTION: A cabin body 5 disposed movably back and forth at a laser beam machine body 3 covers the part above the laser beam machine 3 body and a processing table 7 when a laser beam machine body 3 executes laser beam processing of a work W on a processing table 7 by irradiating this work with a laser beam LB. This cabin body 5 is provided on its lower side with a sub-cabin 9 consisting of plural divided covers 73 vertically movably so as to cover the circumference of the processing table 7. This sub-cabin moves vertically in the state of allowing upward retreat at all times. The divided covers 73 are individually and individually movable to retreat upward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover device for a laser beam machine, and more particularly to a cover device for a laser beam machine which can ensure workability and safety.

[0002]

2. Description of the Related Art Conventionally, for example, an actual Kaihei 4-2219
In the cover device of the laser processing machine disclosed in Japanese Patent Laid-Open Publication No. 2 publication, a cover covering the entire upper part of the processing table is provided so as to be openable and closable.

Further, in the three-dimensional laser beam machine 101 shown in FIG. 7, the laser beam LB emitted from the nozzle 105 at the tip of the machining head 103 may go not only downward but also horizontally or upward. As a result, workers and peripheral equipment have been protected from the laser beam LB.
A cover device 107 that covers the entire laser processing machine 101 is used for blocking. This cover device 107 is
The cabin 109 is opened and closed up and down. The cabin 109 is lowered and closed during laser processing, and the setup is performed with the cabin 109 open and up when performing setup for processing.

Further, the cover device 11 shown in FIG.
1, an opening / closing portion 115 is provided on the front surface of the cabin 113, and the opening / closing portion 115 opens and closes forward. Therefore, it is closed during the laser processing, but when the setup is performed, the front opening / closing part 115 is opened.

[0005]

However, in such a conventional technique, since the cabin 109 is of a fixed type, a spatial installation space is required, and there is a problem that workability at the time of setup is deteriorated. .

Further, the opening / closing portion 11 on the front surface of the cabin 113
When 5 is opened and closed like a door, the door may collide with a material or an operator, which causes problems such as poor workability and lack of safety.

The object of the present invention was made in view of the above-mentioned conventional techniques, and it is an object of the present invention to provide a cover device for a laser processing machine in which the installation space can be minimized and the setup workability can be ensured. is there.

[0008]

In order to achieve the above object, a cover device of a laser processing machine according to the invention of claim 1 irradiates a laser beam to a work on a processing table to perform laser processing. A cover device for a laser processing machine, wherein the laser processing machine main body of the laser processing machine and a cabin body provided in the laser processing machine body so as to be movable back and forth to cover the upper side of the processing table, and a lower side of the cabin body. A sub-cabin provided so as to be movable up and down so as to cover the periphery of the processing table, and the sub-cabin is composed of a plurality of split covers that move up and down while always allowing upward retreat. is there.

In order to achieve the above object, the cover device for a laser beam machine according to a second aspect of the invention is characterized in that each of the divided covers according to the first aspect can be independently retracted upward. is there.

[0010]

In the cover device of the laser processing machine according to claim 1, when the laser processing machine irradiates a laser beam to the work on the processing table to perform the laser processing, the cover is provided on the main body of the laser processing machine so as to be movable back and forth. The cabin body thus formed covers the laser processing machine body and the processing table. A sub-cabin composed of a plurality of split covers is provided on the lower side of the main body of the cabin so as to cover the periphery of the processing table, and the sub-cabin is vertically movable while allowing the upward retreat at all times. .

In the cover device for a laser beam machine according to a second aspect, each of the divided covers according to the first aspect can be independently retracted upward.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a cover device 1 of the first embodiment. The cover device 1 includes a cabin body 5 that covers an upper portion of a laser beam machine body 3 of the laser beam machine, and a sub-cabin 9 that is suspended from the cabin body 5 to protect the periphery of the processing table 7. There is.

The cabin body 5 is movable in the front-rear direction with respect to the laser processing machine body 3, and the sub-cabin 9
Is provided so as to be vertically movable with respect to the cabin body 5 and also movable back and forth.

2 and 3, the cabin body 5 is shown.
A mechanism for moving the back and forth is shown. Laser processing machine 3
A support frame 11 is horizontally fixed in the front-rear direction (vertical direction in FIG. 2) at the upper ends of the side surfaces (left and right sides in FIG. 1A). The support frame 11 has a length such that the support frame 11 projects slightly forward of the laser processing machine body 3.
Further, guides 13 having a U-shaped cross section are provided at both front and rear ends of the support frame 11 with their openings facing outward.

A front-back drive motor 15 for moving the cabin body 5 back and forth is provided at the center of the upper surface of the body of the laser processing machine 3. Body drive shafts 19 are provided on both left and right sides of the front-rear drive motor 15 via joints 17. This body drive shaft 1
9 is a bearing 2 near both the left and right end portions and the central portion thereof.
It is rotatably supported by 1, and pinion gears 23 are attached to the left and right ends of the main body drive shaft 19, respectively.

On the other hand, a beam member 25 is provided in the front-rear direction at the upper end of the inside of the side surface of the cabin body 5, and a rack 27 with which the pinion gear 23 meshes is provided horizontally in the front-rear direction on the beam member 25. There is. In addition, the beam member 2
5, the guide 13 is provided below the rack 27.
A guide rail 29 is provided in the front-rear direction so that can slide.

With the above construction, the front and rear drive motor 15 rotationally drives the main body drive shaft 19 to rotationally drive the left and right pinion gears 23 to move the rack 27 of the cabin main body 5 back and forth. The main body 5 is supported by the guide 13 and moves horizontally back and forth.

With reference to FIG. 2 and FIG. 3, an up / down (vertical direction in FIG. 3) moving mechanism of the sub-cabin 9 suspended on the side surface of the cabin body 5 will be described.

A vertical drive motor 31 for vertically moving the sub-cabin 9 is provided at the upper end portion on the right side (right side in FIG. 1A) of the main body of the laser processing machine 3. The vertical drive motor 31 is connected to the vertical drive shaft 3 via a joint 33.
5 is installed. The vertical drive shaft 35 has two bearings 39, 3 on a bracket 37 provided so as to project forward from the upper end of the laser processing machine body 3.
It is rotatably supported by 9, and a vertical drive sprocket 41 is attached to the tip of the vertical drive shaft 35.

A support member 43 is fixed in the vertical direction on the front surfaces of the left and right ends of the laser processing machine body 3, and a vertical guide rail 45 is provided in the vertical direction on the front surface of the support member 43. A vertical driven sprocket 47 is rotatably provided near the lower end of the front surface of the support member 43 at a position corresponding to the vertical driving sprocket 41. The vertical driven sprocket 47 and the vertical driving sprocket are rotatably provided. A vertical chain 49 is wound between 41.

On the other hand, a beam member 51 for suspending the sub-cabin 9 is attached to the upper end of the inner side surface of the sub-cabin 9 in the front-rear direction. Front and rear guide rails 53 are attached to the lower surface of the beam member 51 in the front and rear direction. Also,
Inside the sub-cabin 9, the upper and lower guide rails 45 are provided.
An upper and lower carriage 57 is provided, to which an upper and lower slider 55 that moves up and down along is attached.

The upper and lower carriages 57 are L-shaped as a whole, and the lower front ends thereof are long in the front-rear direction. A front-rear slider 59 on which the front-rear guide rails 53 of the sub-cabin 9 slide is slid in this portion. Since it is provided, the sub-cabin 9 can be moved back and forth manually. A fixing member 61 for fixing the upper and lower carriages 57 to the upper and lower chains 49 is attached inside the upper ends of the upper and lower carriages 57.

Although not shown, the structure described above is exactly the same for the sub-cabin 9 on the left inner surface of the cabin body 5.

On the other hand, a front-rear drive sprocket 63 is provided between the two bearings 39, 39. Bearings 65, 65 are provided near the left and right ends of the upper surface of the laser processing machine 3 in correspondence with the bearings 39, 39, and between the bearings 65, 65, a sub-cabin on the left side of the cabin body 5 is provided. The sub-driving shaft 67 is used to transmit the driving force for driving the laser beam 9 up and down.
It is provided rotatably over substantially the entire width of.

Front and rear driven sprockets 69 are attached to the left and right ends of the sub drive shaft 67 in correspondence with the front and rear driving sprockets 63. A front and rear chain is provided between the front and rear driven sprockets 69 and the front and rear driving sprockets 63. 71 is wound. Although not shown, this is exactly the same for the sub-cabin 9 on the left side of the cabin body 5.

With the above-mentioned structure, the rotation of the vertical drive motor 31 is transmitted from the front-rear drive sprocket 63 to the front-rear driven sprocket 69 by the front-rear chain 71, and the left front-rear driven sprocket via the sub-drive shaft 67. 69, the front-rear chain 71 and the front-rear drive sprocket 63. Therefore, the left and right pinion gears 23, 23 rotate in synchronization with each other, so that the sub-cabin 9 moves up and down while maintaining parallelism.

Referring to FIG. 4, the sub-cabin 9 is composed of a split cover 73 which is split on the front and side surfaces of the laser processing machine body 3. This split cover 73 has a convex portion 75 on one side end surface, and the groove portion 7 on which the convex portion 75 can engage and slide on the other side end surface.
Have 7.

As a result, the adjacent divided covers 73 mutually restrain the movement in the front-rear direction. Further, each divided cover 73 does not have a drive device for moving up and down by itself, so that the divided covers 73 can move individually in the vertical movement.

Therefore, as shown in FIG. 5, when the cover device 1 and the interfering object 79 are present, only the split cover 73 that interferes with the interfering object 79 moves upward. In FIG. 5A, one split cover 73 is an obstacle 79.
5B shows a case where the interference object 79 interferes with the two divided covers 73.

Next, the opening / closing operation of the cover device 1 will be described. When the cabin main body 5 is moved back and forth, the sub-cabin 9 is raised. Then, after moving the cabin body 5 forward, the sub-cabin 9 is lowered. At this time, if there is an interfering object 79 that interferes with the sub-cabin 9, only the corresponding division cover 73 stops descending to avoid the interference with the interfering object 79.

The laser processing is performed with the sub-cabin 9 lowered. Although not shown, an interlock is provided to prevent the cabin body 5 and the sub-cabin 9 from operating during laser processing to ensure safety.

According to the cover device 1 of such a laser processing machine, the sub-cabin 9 can be raised or lowered separately from the cabin body 5, so that the cabin body 5 is moved forward and above the working table 7. It is possible to set up from the front side and left and right directions of the processing range with the cover covered, improving work efficiency.

When it is necessary to work from above the working range, the cabin body 5 can be retracted to secure a sufficient working space for safe work.

Further, since the sub-cabin 9 is divided into a plurality of divided covers 73, when there is an interfering object 79 when descending, only the corresponding divided cover 73 is stopped to descend to avoid the interfering object 79. Therefore, the sub-cabin 9 and the interfering object 79 are not damaged, and the divided structure reduces the weight and improves the work safety.

Further, since the entire surface can be covered during the laser processing, it is possible to protect the worker and others from the laser beam to ensure safety.

FIG. 6 shows a second embodiment of the cover device 81 of the laser processing machine according to the present invention. It should be noted that parts common to those in the above-described first embodiment are designated by common reference numerals and redundant description will be omitted.

In the second embodiment, the sub-cabin 83 is made of a transparent acrylic plate and is movable upward like a armored door. The other structure is similar to that of the first embodiment described above.

Even in this case, the same effects as those of the above-described embodiment can be obtained, and further, there is an advantage that the working state can be seen even when the sub-cabin 83 is closed.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0041]

As described above, the cover device for a laser processing machine according to the first aspect of the present invention performs laser processing when the laser processing machine irradiates a laser beam to a work on a processing table to perform laser processing. The main body of the machine, which covers the machine and the upper part of the processing table, is provided in the main body of the laser processing machine so that it can move back and forth, so it moves forward to block the laser beam, but before or after processing it moves backward. Move to. Therefore, the working table is opened during the setup work, and the work can be performed easily. In addition, since a sub-cabin consisting of a plurality of divided covers is provided under the cabin body so as to cover the periphery of the machining table, the sub-cabin is lowered during machining, so the sub-cabin is lowered to machine the laser machining unit and machining table. Can be completely covered and work safety is ensured. Further, if only the sub-cabin is raised with the cabin main body moved forward, the setup work can be performed from the periphery of the working table, so that the work efficiency can be improved. Further, since the plurality of divided covers forming the sub-cabin always move up and down while allowing the retreat to the upper side at all times, the descent is stopped when there is something that interferes with the sub-cabin. Therefore, it is possible to prevent the sub-cabin and the interfering object from being damaged.

In the cover device of the laser beam machine according to the second aspect, since the plurality of divided covers forming the sub-cabin can be independently retracted and moved upward, if there is an interfering object, the corresponding divided cover can be moved. Only the descent stops, but the other split covers descend normally. Therefore, it is possible to prevent the split cover and the interfering object from being damaged, and it is possible to easily repair and replace each split cover.

[Brief description of drawings]

1A is a front view showing an embodiment of a cover device for a laser beam machine according to the present invention, FIG. 1B is a plan view of FIG. 1A, and FIG. 1C is a side view of FIG. is there.

FIG. 2 is a partially omitted detailed plan view showing a longitudinal movement mechanism of a cabin body and a vertical movement mechanism of a sub-cabin.

FIG. 3 is a detailed front view, partly omitted, showing the longitudinal movement mechanism of the cabin body and the vertical movement mechanism of the sub-cabin.

FIG. 4 is a sectional view showing a relationship between adjacent divided covers.

FIG. 5 is an explanatory diagram showing movement of the division cover when there is an interfering object.

6A is a front view showing a second embodiment of a cover device for a laser beam machine according to the present invention, FIG. 6B is a plan view of FIG. 6A, and FIG. 6C is a side view of FIG. Is.

FIG. 7 is a perspective view showing a cover device of a conventional laser processing machine.

FIG. 8 is a perspective view showing a cover device of a conventional laser processing machine.

[Explanation of symbols]

 1 Cover Device 3 Laser Processing Machine Main Body 5 Cabin Main Body 7 Processing Table 9 Sub Cabin 73 Split Cover W Work LB Laser Beam

Claims (2)

[Claims] 1. A cover device of a laser processing machine for irradiating a laser beam to a work on a processing table to perform laser processing, wherein the laser processing machine main body and the upper side of the processing table are covered. The laser processing machine body is provided with a cabin body that is movable back and forth, and a sub-cabin that is vertically movable to cover the periphery of the processing table is provided on the lower side of the cabin body, and the sub-cabinet moves upward. A cover device for a laser processing machine, comprising a plurality of divided covers that move up and down while allowing evacuation at all times. 2. The cover device for a laser processing machine according to claim 1, wherein each of the divided covers can be independently retracted and moved upward.