JPH09295180A - Laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the dust collecting efficiency of spatter or dust, etc., by covering the upper face of a machining table of a laser beam machine with a cover. SOLUTION: This laser beam machine 1 is provided with a stood bed 3, and a machining table 5 is fixed onto the bed 3. A machine main body 7 is installed on the upper side of the machining table 7. A work to be machined is irradiated with a laser beam from a laser machining head installed on the machine main body 7, and the work is machined with the laser beam. The laser beam is emitted from a laser oscillator 9 and the work is irradiated with laser beam from the laser beam machining head through plural numbers of bend mirrors M1 , M2 , M3 . Then, a cover 29 for covering the upper face of the machining table 5 is installed. The cover 29 is has a reverse U shape, and a 1st flexible cover 35 is installed on one end of the table 5. Therefore, spatter and dust, etc., producing during machining can be prevented from flying up from the machining table.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser processing machine for increasing the efficiency of collecting dust such as spatter generated during laser processing of a work.

[0002]

2. Description of the Related Art Conventionally, in a laser processing machine, as shown in FIGS.
The work W is laser-processed by placing the work W thereon and irradiating the work W with the laser beam LB from the laser processing head 103.

18 and 19, a dust collecting duct 107 extending to the scrap box 105 or its vicinity is provided immediately below the processing position of the processing table 101. Spatter generated during processing,
Dust or the like is collected by a dust collecting device (not shown) through the scrap box 105 or the dust collecting duct 107.

[0004]

By the way, in the above-mentioned conventional laser processing machine, the work W is processed at the time of laser processing.
There is a problem that the efficiency of collecting the dust that has risen upward is poor. As a measure for improving the efficiency of collecting the dust that has risen above the work W, for example, the actual Kaihei 4-113183.
As is known from Japanese Patent Publication No. JP-A-2003-242242, etc., a blocking plate unit is provided in front of the laser processing head 103 during laser processing to prevent the laser beam from leaking to the outside of the blocking plate unit. However, dust cannot be completely recovered.

It is an object of the present invention to provide a laser beam machine which improves dust collection efficiency by preventing spatters, dusts, etc. generated during laser beaming from rising and improving safety. .

[0006]

In order to achieve the above object, a laser processing machine according to the present invention according to claim 1 is provided with a processing table on a bed and a processing machine main body above the processing table. A laser processing machine for performing laser processing by irradiating a work to be processed on the processing table with a laser beam from a laser processing head provided on the main body, and a cover for covering an upper surface of the processing table is provided. It is what

Therefore, since the cover for covering the upper surface of the processing table is provided, spatter, dust, etc. generated during processing do not rise above the processing table, so that the efficiency of collecting spatter, dust, etc. is improved as compared with the conventional case. Is planned.

According to a second aspect of the present invention, there is provided the laser beam machine according to the first aspect, wherein the cover has an inverted U shape and a first flexible cover is provided at one end of the cover. It is characterized by that.

Therefore, since the cover has an inverted U shape and the first flexible cover is provided at the end of the cover, the work to be processed is a three-dimensional processing such as an oversized flat plate or a square type work. Since the end portion of the work is covered with the first flexible cover, spatter and dust do not scatter to the outside.

According to a third aspect of the present invention, there is provided the laser beam machine according to the first or second aspect, wherein the cover is provided with a viewing window.

Therefore, since the observation window is provided on the upper surface of the cover, the laser processing state and situation can be observed and confirmed through the observation window.

According to a fourth aspect of the present invention, there is provided a laser beam machine according to any one of the first to third aspects, wherein the machining table is fixed on a bed, and a work is movably provided on the machining table. It is characterized in that the cover is provided so as to be movable in any direction.

Therefore, the processing table is fixed on the bed, the work is moved onto the processing table, and the laser processing is performed. Further, since the cover is provided so as to be movable in the moving direction of the work, the cover is moved to a position away from the processing table when the work is carried in and out of the processing table, and the work is easily carried in and out. .

According to a fifth aspect of the present invention, in the laser beam machine according to any one of the first to fourth aspects, a second flexible member is provided at the end of the bed at a position where the cover is separated from the processing table. It is characterized by being provided with a cover.

Therefore, even if the work to be processed is an oversized flat plate, a three-dimensional object such as a square type is moved during the laser processing and protrudes to the end of the bed, the end of the work is covered by the second flexible cover. , Spatter, dust, etc. do not scatter to the outside.

According to a sixth aspect of the present invention, there is provided a laser beam machine according to any one of the first to fifth aspects, wherein the cover is locked by a vertically moving means on a carriage provided at one end of the machining table so as to be movable in the front-rear direction. , It is characterized by being unlocked.

Therefore, when the cover is locked or unlocked on the carriage, it can be easily and surely locked or unlocked by the vertical movement means.

According to a seventh aspect of the present invention, there is provided a laser beam machine according to any one of the first to fifth aspects, wherein a frame column having an open lower portion is provided around a lower portion of the machine body, and one end of the frame column is provided. It is characterized in that a maintenance door that can be opened and closed is provided on the side.

Therefore, a frame column is provided in the lower part of the main body of the processing machine, and a maintenance door is provided on the frame column so that the maintenance door can be opened and closed. The maintenance door can be opened easily and easily without removing.

According to an eighth aspect of the present invention, there is provided a laser beam machine according to the seventh aspect, wherein the maintenance door is provided with an open / close detection sensor.

Therefore, the opening / closing of the maintenance door is reliably detected by the opening / closing detection sensor, and when the maintenance door is opened, an alarm is output and the laser beam machine is stopped.

According to a ninth aspect of the present invention, there is provided the laser beam machine according to any one of the first to fifth aspects, wherein a lock mechanism for locking and unlocking the cover is provided on the machining table. Is.

A laser processing machine according to a tenth aspect of the present invention is the laser processing machine according to the ninth aspect, wherein the lock mechanism is a lock cylinder provided on the processing table, and a lock mounted on the lock cylinder. It is characterized by comprising a damper block, a lock block provided on the cover, a lock pin provided on the lock block, and a lock pin sensor provided on the processing table. .

Therefore, the cover is locked or unlocked on the working table by the operation of the lock mechanism. That is, when the cover is moved to the front side, for example, the lock block provided on the cover is also moved to the front side. When the lock pin provided on the lock block is detected by the lock pin sensor provided on the machining table, the lock block is stopped, and the lock cylinder is activated to raise the lock damper block and press the lock block. Locked. Further, when the lock cylinder is operated to lower the lock damper block, the lock is released and unlocked.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1, FIG. 2, FIG. 3 and FIG. 4, the laser beam machine 1 is provided with an upright bed 3, and a front portion on this bed 3 (see FIG. 1, FIG. 2, FIG. A processing table 5 is fixedly provided on the right side in FIG. A gate-shaped processing machine main body 7 is integrally provided at substantially the center of the bed 3, and a laser oscillator 9 is provided at the rear portion (left portion in FIGS. 1, 2 and 3) on the bed 3. Is provided.

A carriage 11 is provided on the upper part of the processing table 5 in FIG. 3 so as to be movable in the X-axis direction (left and right directions in FIGS. 1, 2, and 3), and the carriage 11 should be processed. A work clamp 13 that clamps the work W is provided.

With the above structure, the work W is placed on the working table 5 and clamped by the work clamp 13. By moving the carriage 11 in the X axis direction, the work W is moved in the X axis direction on the processing table 5.

The processing machine body 7 is provided with a laser processing head 15 which is movable in the Y-axis direction (vertical direction in FIG. 3, horizontal direction in FIG. 4). Two rotatable cutting rollers 1 with a gap are provided on the processing table 5 directly below the laser processing head 15.
7 are provided. The dust collecting duct 1 is provided in the bed 3.
9 and the dust collecting duct 19
The other end of is connected to the dust collector 21.

A chiller 23 is arranged on the left side of the dust collector 21 in FIG. Further, the processing machine body 7
4, an NC device 27 is provided on the left side via a rotatable bracket 25.

With the above structure, the laser beam oscillated from the laser oscillator 9 has a plurality of bend mirrors M ₁ and M ₁ .
Laser processing is performed by irradiating the work W from the laser processing head 15 via ₂ and M ₃ . Therefore, by moving the work W clamped by the work clamp 13 in the X-axis direction and moving the laser processing head 15 in the Y-axis direction, laser processing is performed at a desired position of the work W. Moreover,
Spatters, dusts, etc. generated during laser processing fall from between the two cutting rollers 17 downwardly and are collected by the dust collecting device 21 through the dust collecting duct 19.

A cover 2 for covering the upper surface of the processing table 5.
9 are provided. The cover 29 has an inverted U-shape and, as shown in FIG. 3, is guided by a guide rail 31 and a roller guide 32 laid on the bed 3 and extending in the X-axis direction. It is provided so as to be movable in the X-axis direction. Moreover, the right end of the cover 29 in FIG. 3 is moved leftward in the bed 3 by the slide amount S. The movement of the cover 29 is usually performed manually, but it may be performed automatically.

Therefore, since the cover 29 is provided so as to cover the upper surface of the processing table 5, spatter, dust, etc. generated during laser processing do not rise upward, and fall downward from between the cutting rollers 17. Therefore, the dust collection efficiency can be improved as compared with the conventional case.

Further, since the cover 29 is provided so as to be movable in the X-axis direction, when the work W is carried into or out of the processing table 5, the cover 29 slides in FIG. By moving the quantity S to the left, the upper side of the processing table 5 is opened,
The work W can be easily loaded and unloaded.

As shown in FIG. 3, the cover 29 is provided with a plurality of viewing windows 33 made of a transparent material such as a transparent plastic plate such as an acrylic plate or a glass plate as shown in FIG. The operator can easily observe and confirm the laser processing state and status through the viewing window 33.

At the right end of the cover 29 in FIG. 2, a plurality of vinyl chloride covers 35 as a first flexible cover are provided. Therefore, when the workpiece W to be processed is laser-processed on a three-dimensional object such as an oversized flat plate or square pipe as shown in FIG. 5, for example, the PVC cover 3 is used.
Since 5 is bent and comes into contact with the surface of the outer corner of the work W and is covered without leaving a gap, spatter and dust generated during processing are not scattered to the outside and are collected by the dust collecting device 21 via the dust collecting duct 19. As it is dusted, the dust collection efficiency can be further improved.

The bed 3 has a second portion at the left end in FIG.
A plurality of vinyl chloride covers 37 as flexible covers are attached in the same manner as the vinyl chloride cover 35. Therefore,
If the work W is a three-dimensional object such as an oversized flat plate or a square pipe, and pops out from the left end of the bed 3, the PVC cover 3
Since 7 is bent and comes into contact with the surface of the outer corner of the work W and is covered without leaving a gap, spatter and dust generated during processing do not scatter to the outside, and go to the dust collector 21 via the dust collection duct 19. The dust is collected, and the dust collection efficiency can be further improved.

As an example of automatically moving the cover 29 in the X-axis direction, for example, as shown in FIG. 6, roller guides 32 extending in the X-axis direction are provided on the left and right sides of the processing table 5. A guide rail 31 is laid, and a roller follower 39 rotatably attached to the left side of the cover 29 is placed on the roller guide 32. A carriage 11 is provided on the guide rail 31 via a slider 41 so as to be movable in the X-axis direction. An upper and lower cylinder 45 to which a piston rod 43 is attached is provided on the carriage 11.

With the above structure, when the X-axis is returned to the origin and the upper and lower cylinders 45 provided on the carriage 11 are operated to raise the piston rod 43, the cover 29 is locked. In this state, take the carriage 11 X
By moving the cover 29 in the axial rear direction, the cover 29 is also moved together. The cover 29 is unlocked by moving the piston rod 43 downward when the carriage 11 moves backward.

The carriage 11 moves to the front side again and the work clamp 13 is opened by the foot switch, so that the work can be loaded and unloaded. Therefore, the cover 29 can be moved together with the carriage without having a drive source.

As shown in FIGS. 1, 7, 8 and 9, the lower part of the main body 7 of the processing machine is provided with a frame column 47 whose lower part is opened. On the front surface of the frame column 47, as shown in FIG. 1, a plurality of transparent pressure monitoring windows 49 are provided in the left-right direction at appropriate intervals. The pressure gauge attached to the laser processing head 15 can be visually observed through the pressure monitoring window 49.

A maintenance support 51 is attached to the frame column 47 with a plurality of bolts, and a butterfly plate 53 is welded to the upper and lower sides of the maintenance support 51, for example. A maintenance door 55 is provided on the butterfly plate 53 so as to be opened and closed. As shown in FIG. 9, a pressure monitoring window 57 is provided on the front surface of the maintenance door 55.

A handle 59 is provided on the right side of the maintenance door 55 in FIG. 9, and a magnet 61 is provided on the back side of the maintenance door 55. Moreover, as shown in FIG. 8, a limit switch 63 as an opening / closing detection sensor is provided on the back side of the maintenance door 55. Frame column 4
A limit switch 63 is provided on the 7 side to provide a dog for detecting opening / closing.

With the above structure, when the laser processing head 15 or the like is maintained, the operator holds the handle 59 and pulls it toward the front side, so that the magnet 61 is disengaged and the maintenance door 55 is centered around the butterfly plate 53. Is opened, the maintenance can be easily performed without removing the cover 29. Whether to perform maintenance can be determined by visually observing a pressure gauge attached to the laser processing head 15 through the pressure monitoring windows 49 and 57.

The opening of the maintenance door 55 can be detected by removing the limit switch 63 from the dog, and in that case, the laser processing machine 1 is stopped as an alarm. In addition, it is possible to detect that the maintenance door 55 is closed by contacting the dog with the limit switch 63.

FIG. 10 shows another lock mechanism 65 for locking and unlocking the cover 29 on the working table 5. Referring also to FIG. 11, the cover 29
A hole 67 is formed in the front surface of the lock block 69, and a lock block 69 protruding forward from the hole 67 is attached to the cover 29. A lock pin 71 is provided at the lower end of the lock block 69, and the rear end of the lock block 69 is pivoted by a pin 75 to a support block 73 attached to the cover 29, as shown in FIG. It is supported. Moreover, springs 77 are attached to both sides of the lock block 69, and the pins 75 serve as fulcrums.
Although it is rotated in the left-right direction at, the movement is restricted by the spring 77.

Referring to FIGS. 10 and 13, a box 79 is provided at the front end of the processing table 5. This box 79, as shown in FIG.
In FIG. 14, an opening 79K is provided on the left side so that the lock block 69 provided with the lock pin 71 can be inserted therein.

A lock cylinder 81 is provided in the processing table 5 below the box 79.
A piston rod 83 is attached to the lock cylinder 81. A lock damper 85 is attached to the tip of the piston rod 83. Further, a proximity switch 87 as a lock pin sensor is provided in the right side wall of the box 79 in FIG.

With the above structure, the operation will be described with reference to the flow chart shown in FIG. 17. When performing the laser processing, the cover 29 is moved forward in FIG. 14
Is moved to the box 79 side, as indicated by the arrow in FIG. In step S2, the lock block 69 is in the box 7
When the lock pin 71 reaches above the proximity switch 87 as shown in FIG. 15 in step S3, the proximity sensor 87 operates. In step S4, the movement of the lock block 69 is stopped, the lock cylinder 81 is activated, and the lock damper 85 is raised via the piston rod 83. Figure 1 in step S5
As shown in FIG. 6, the lock pin 71 does not move to the left, and the cover 29 is locked. The cover 29 is locked to the processing table 5 during laser processing. When the lock block 69 enters the opening 79K of the box 79, the opening 79K
In addition to K, even if the tip of the lock block 69 hits, the spring 77 always causes the lock block 69 to enter the processed portion 79K.

Before or after the laser processing of the work W is started, or when the operation button is pressed in step S6, the operation reverse to the above-described operation is performed. In step S7, the lock cylinder 81 is operated and the piston rod 83 is operated. Moves down to release the lock block 69 from the lock damper 85, and the cover 29 is unlocked from the processing table 5,
In step S8, the lock block 69 is moved out of the box 79. In this state, the work W can be loaded and unloaded by opening the cover 29, for example.

Therefore, since the cover 29 is locked to the processing table 5 during the laser processing of the work W, the safety can be improved.

The present invention is not limited to the above-described embodiment, but can be embodied in other forms by making appropriate changes.

[0053]

As can be understood from the above-described embodiments, since the cover for covering the upper surface of the processing table is provided according to the invention of claim 1, spatter and dust generated during processing are generated. Since it does not rise above the processing table, it is possible to improve the efficiency of collecting dust such as spatter and dust as compared with the conventional case.

According to the second aspect of the present invention, since the cover has an inverted U-shape and the first flexible cover is provided at the end of the cover, the work to be processed is an oversized flat plate. , 3D processing such as square type is possible, and since the end of the work is covered with the first flexible cover, spatter and dust do not scatter to the outside, and the dust collection efficiency can be further improved. .

According to the third aspect of the invention, since the observation window is provided on the upper surface of the cover, it is possible to easily observe and confirm the laser processing state and condition from this observation window.

According to the fourth aspect of the present invention, the processing table is fixed on the bed, and the work is moved onto the processing table to perform the laser processing. Further, since the cover is provided so as to be movable in the moving direction of the work, the cover is moved to a position away from the processing table when the work is carried in and out of the processing table, so that the work can be easily carried in and out. You can

According to the fifth aspect of the present invention, even if the work to be processed is an oversized flat plate, a three-dimensional object such as a square type is moved during the laser processing and sticks out to the end of the bed, the work is processed by the second flexible cover. Since the end portion of is covered, spatter, dust, etc. do not scatter to the outside, and the dust collection efficiency can be further improved.

According to the sixth aspect of the present invention, when the cover is locked or unlocked on the carriage, it can be easily and surely locked or unlocked by the vertical movement means.

According to the invention of claim 7, a frame column is provided in the lower part of the main body of the processing machine, and a maintenance door is opened and closed with respect to the frame column. When performing, the maintenance door can be opened easily and easily without removing the cover.

According to the invention of claim 8, the opening / closing of the maintenance door is surely detected by the opening / closing detection sensor, and when the maintenance door is opened, an alarm is output and the laser beam machine can be stopped.

According to the ninth and tenth aspects of the present invention, the cover is locked or unlocked on the working table by the operation of the lock mechanism. That is, when the cover is moved to the front side, for example, the lock block provided on the cover is also moved to the front side. When the lock pin provided on the lock block is detected by the lock pin sensor provided on the machining table, the lock block is stopped, and the lock cylinder is activated to raise the lock damper block and press the lock block. Locked. Further, when the lock cylinder is operated to lower the lock damper block, the lock is released and unlocked.

Since the cover can be automatically locked and unlocked with respect to the processing table, the safety can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a laser beam machine according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a front view of FIG.

FIG. 5 is an enlarged view of an IV arrow portion in FIG.

FIG. 6 is a front view of a lock mechanism that locks and unlocks the cover on the processing table.

FIG. 7 is a side view showing a portion where a maintenance door is provided on one side of a lower portion of the processing machine main body.

FIG. 8 is a plan view of FIG.

FIG. 9 is a front view in FIG. 7;

FIG. 10 is a perspective view showing another lock mechanism for locking and unlocking the cover on the processing table.

11 is an enlarged view of a portion viewed from the arrow XI in FIG.

FIG. 12 is a plan view of a lock block.

13 is an enlarged view of the XIII arrow section in FIG.

FIG. 14 is a side sectional view of the box in FIG.

15 is an explanatory diagram illustrating an operation of the lock mechanism in FIG.

16 is an explanatory diagram illustrating an operation of the lock mechanism in FIG.

17 is a flowchart illustrating the operation of the lock mechanism in FIG.

FIG. 18 is a side view showing a dust collecting state in a conventional laser processing machine.

FIG. 19 is a side view showing another dust collecting state in the conventional laser processing machine.

[Explanation of symbols]

 1 Laser Processing Machine 3 Bed 5 Processing Table 13 Work Clamp 15 Laser Processing Head 19 Dust Collection Duct 21 Dust Collection Device 29 Cover 33 Peep Window 35 PVC Cover (1st Flexible Cover) 37 PVC Cover (2nd Flexible Cover) )

Claims (10)

[Claims] 1. A processing table is provided on a bed and a processing machine main body is provided above the processing table, and a laser beam is irradiated from a laser processing head provided on the processing machine main body onto a workpiece to be processed on the processing table. A laser beam machine for performing laser beam machining by providing a cover for covering the upper surface of the processing table. 2. The laser processing machine according to claim 1, wherein the cover has an inverted U-shape, and a first flexible cover is provided at one end of the cover. 3. The laser processing machine according to claim 1, wherein the cover is provided with a viewing window. 4. The work table is fixed on a bed, a work is movably provided on the work table, and the cover is movably provided in a moving direction of the work. , 3 laser processing machine. 5. The laser processing machine according to claim 4, wherein a second flexible cover is provided at an end portion of the bed at a position where the cover is separated from the processing table. 6. The laser beam machine according to claim 1, wherein the carriage is provided at one end of the machining table so as to be movable in the front-rear direction, and the cover is locked and unlocked by vertical movement means. . 7. The periphery of the lower portion of the processing machine body,
6. The laser processing machine according to claim 1, wherein a frame column having an open bottom is provided, and an openable / closable maintenance door is provided at one end of the frame column. 8. The laser processing machine according to claim 7, wherein the maintenance door is provided with an open / closed detection sensor. 9. The laser processing machine according to claim 1, wherein a lock mechanism for locking and unlocking the cover is provided on the processing table. 10. The lock mechanism includes: a lock cylinder provided on the processing table; a lock damper block mounted on the lock cylinder; a lock block provided on the cover; and a lock block provided on the lock block. 10. The laser beam machine according to claim 9, wherein the laser beam machine comprises a lock pin provided on the processing table and a lock pin sensor provided on the processing table.