JPH09323187A - Laser processing machine - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a laser processing machine capable of reducing the weight of a processing table and performing high-speed and high-precision processing. A processing table is movably arranged on a bed. The workpiece 15 supported on the supporting member 16 of the processing table 14 is irradiated with a laser beam to perform laser processing. An elevating mechanism 18 is arranged on the bed 11 so as to correspond to the original position P2 of the processing table 14. The elevating mechanism 18 is provided with an elevating member 27 for elevating the work 15 to a supporting position P3 on the supporting member 16 and a separating position P4 spaced above the supporting member 16.

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 irradiating a work supported on a processing table with a laser beam to perform laser processing.

[0002]

2. Description of the Related Art For example, Japanese Utility Model Publication No. 3-21830 and Japanese Utility Model Publication No. 6-233 disclose laser processing machines. In these conventional configurations, a processing table is movably arranged on a bed, and a plurality of sword-shaped supporting members for supporting a work are provided on the processing table in a protruding manner. Further, the processing table is provided with an elevating mechanism including a plurality of elevating members and a cylinder for elevating the elevating members.

When loading or unloading a work on or from the support member of the processing table, the cylinder of the lift mechanism causes each of the lift members to project upward from the top of the support member, and downward from the top of the support member. It is moved up and down to the immersive position. By this elevating and lowering, the work is moved up and down to a separated position which is spaced above the top of the support member and a support position which is supported on the top of the support member.

[0004]

However, in this conventional laser processing machine, an elevating mechanism for elevating the work on the supporting member is mounted on the working table. For this reason, the weight of the processing table becomes large, and the response of movement / stop during movement of the processing table deteriorates due to inertia, and high-speed and high-accuracy laser processing cannot be performed.

Further, since the lifting mechanism having a cylinder and the like is mounted on the moving processing table, it is necessary to devise a necessary arrangement for the piping for the cylinder and the structure becomes complicated. .

In addition, since a laser beam may be irradiated to the elevating mechanism on the processing table during laser processing, it is necessary to cover and protect the elevating mechanism with a cover or the like, which further complicates the structure. was there.

The present invention has been made by paying attention to such problems existing in the prior art. The main purpose is to reduce the weight of the machining table because the lifting mechanism for raising and lowering the workpiece on the support member is not installed on the machining table, and to perform high-speed and high-precision machining. It is to provide a laser processing machine capable of performing the above-mentioned process and simplifying the structure.

[0008]

In order to achieve the above object, a laser beam machine according to the present invention is configured as described in each of the claims.

Therefore, in the laser beam machine according to the first aspect of the invention, when the work is carried in or out of the working table, the working table is arranged corresponding to the lifting mechanism. In this state, by the lifting mechanism, the work is separated from the work support surface of the processing table above the separation position,
It is lifted up and down to a position on the work support surface. Therefore, the work can be easily carried in or carried out at the separated position separated from the work supporting surface.

In the laser processing machine according to the second aspect, the work is lifted and lowered on the processing table at a position separated from the processing position of the processing machine. In the laser beam machine according to the third aspect, the laser beam machine is supported at a plurality of positions by a plurality of elevating members and can be freely moved in the horizontal plane by the rotation of the ball.

Further, in the laser beam machine according to the fourth aspect, when the cut-out piece of the work collides with the elevating member when the machining table is moved, the elevating member is retracted from the upright position to the fall position. To be done.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described.
It will be described in detail with reference to the drawings. As shown in FIG. 4, a column 12 is erected on the bed 11, and the column 12
A laser processing head 13 is supported on the top so as to be vertically movable (Z direction) and movable back and forth (Y direction).

The processing table 14 is arranged on the bed 11 so as to be movable in the horizontal direction (X direction), and a large number of supporting members 16 for detachably mounting and supporting the work 15 are arranged on the upper surface thereof. Has been done. Then, as shown by a chain line in FIG.
In the state where the laser processing head 13 is moved to the corresponding processing position P1, the laser processing head 13 and the processing table 14 are fed between the laser processing head 13 and the processing table 14 in each of the X, Y and Z directions, and the laser processing head 13 transfers the workpiece 15 to the workpiece 15. On the other hand, laser processing is performed by irradiating a laser beam from a laser oscillator (not shown).

The conveyor 17 is disposed so as to correspond to the lower part of the moving range of the processing table 14 so that the bed 11
Is installed in. Then, the cut-out pieces cut and separated from the work 15 by the above-mentioned laser processing fall on the conveyor 17 and are conveyed to the outside of the laser processing machine.

The elevating mechanism 18 is mounted on the bed 11 so that the processing table 14 is located at a predetermined position within the moving range and corresponds to an original position (home position) P2 separated from the processing position P1. Then, with the processing table 14 moved and arranged at the original position P2, the work 15 is arranged on the work supporting surface 16b by the elevating mechanism 18.
The support position P3 placed on the support member 16 and the support member 1
6 is moved up and down between a separated position P4 which is separated upward from 6.

Therefore, the processing table 14, the lifting mechanism 18 and their related structures will be described in detail with reference to FIGS.
As shown in FIG. 3, the processing table 14 is frame-shaped in the shape of a rectangular frame, and the pair of rails 2 laid on the bed 11 is provided.
1 is supported so as to be movable in the X direction described above. A large number of supporting members 16 made of a metal plate are arranged on the working table 14 at predetermined intervals, and their upper edges have a sawtooth shape. Projections 16a are formed. The sharpened upper ends of the protrusions 16a form the work supporting surface 16b.

A plurality of clamps 22 are arranged at an upper portion on the circumferential side of the processing table 14 at appropriate intervals, and the work pieces 15 are clamped and fixed at the mounting position P3 on the work supporting surface 16b by these clamps 22. It

The elevating frame 23 of the elevating mechanism 18 is formed in a rectangular frame shape, and the bed 1 is provided with four guide rods 24.
1 is supported so that it can be raised and lowered. The four lifting cylinders 25 are mounted on the bed 11 close to the guide rods 24, and the lifting frame 23 is attached to the upper ends of the piston rods.
Are connected and fixed. The elevating cylinders 25 allow the elevating frame 23 to be moved up and down between an upper position shown by a solid line in FIGS. 1 and 3 and a lower position shown by a chain line.

As shown in FIGS. 1 to 3 and 5, a large number of supports 26 are mounted on the elevating frame 23 at appropriate intervals. A plurality of elevating members 27 are rotatably supported on each support base 26 by a support shaft 28, and balls 29 that can contact the lower surface of the work 15 are rotatably supported on their upper ends. The spring 30 is hooked between each elevating member 27 and the support base 26, and urges the elevating member 27 to rotate clockwise in FIG. The stopper 31 is formed on each of the support bases 26 so as to engage with the elevating member 27.
Is always held at the upright position P5 shown by the solid line in FIG. The spring 30 and the stopper 31 constitute a holding means for holding the elevating member 27 upright.

When the elevating frame 23 is arranged in the lower position, the elevating member 27 is arranged in the lower position so as not to interfere with the working table 14. In this state,
When the processing table 14 is moved from the processing position P1 shown in FIG. 4 to the original position P2, the cut-out piece 15a cut and separated from the work piece 15 is moved up and down as shown by a chain line in FIG.
When it collides with 7, the elevating member 27 is retracted from the upright position P5 to the collapsed position P6 against the biasing force of the spring 30.

Further, as shown in FIGS. 1 to 4, when the working table 14 is moved to the original position P2 and the lifting frame 23 is lifted by the driving of the lifting cylinder 25, the lifting member is moved. A part of the ball 29 at the upper end of 27 projects from the work supporting surface 16b. Then, when the elevating frame 23 is lifted from the lower position to the upper position, the work 15 is lifted by the balls 29 of the elevating members 27 at the upright position P5 to the separated position P4 which is separated upward from the work supporting surface 16b.

Next, the operation of the laser processing machine configured as described above will be described. Now, in this laser processing machine, the elevating frame 23 of the elevating mechanism 18 is normally arranged at the lower position shown by the chain line in FIGS.
Is arranged at an upright position P5 shown by a solid line in FIG. In this state, when the work 15 is loaded onto the processing table 14, the processing table 14 is arranged on the bed 11 at the original position P2 shown by the solid line in FIG. .

After that, the elevating frame 23 of the elevating mechanism 18 is raised from the lower position to the upper position by the respective elevating cylinders 25, and the elevating members 27 at the upright position P5 are moved to the working table 14.
Through the gap between the frameworks, the balls 29 are simultaneously projected above the work supporting surface 16b. And
The work 15 begins to be placed on the ball 29 for loading.

Next, the work 15 is moved to a predetermined position on the processing table 14 by the rolling of the ball 29 and positioned, and then the lifting cylinders 25 are retracted downward, and the lifting member 27 is lowered. The balls 29 are collectively arranged below the protrusions 16a of the supporting member 16 which constitutes the work supporting surface 16b. Therefore, the work 15 is transferred onto the projection 16a of the support member 16, that is, onto the work support surface 16b, and then fixed to the working table 14 by the clamp 22. Therefore, the work 15 is supported by the support member 1.
It is positioned at a predetermined position without being damaged by being scratched by 6 or the like.

Then, the processing table 14 is moved to the processing position P1 below the laser processing head 13, and laser processing is performed at that position. The cut-out piece 15a cut by this laser processing falls on the conveyor 17 and is conveyed to a predetermined position by the conveyor 17.

On the other hand, when carrying out the remaining part of the work 15 on the processing table 14, the processing table 14 is moved to the original position P2 shown by the solid line in FIG.
Corresponding to the above.

Thereafter, after the work clamp is released by opening the clamp 22, the elevating frame 23 of the elevating mechanism 18 is moved from the lower position to the upper position by each elevating cylinder 25, and the balls 29 of the elevating member 27 are moved to the working table 14. Of the support member 16 is projected upward. Therefore, the ball 29 of the lifting member 27 separates the work 15 from the work supporting surface 16b. In this state, the processed workpiece 15
Is carried out.

When the machining table 14 is moved from the machining position P1 to the original position P2 after the laser machining of the workpiece 15 is completed, as shown in FIG.
The cut-out piece 15a of the work 15 that is caught by the workpiece may collide with the elevating member 27. In such a case, the elevating member 27 is retracted from the upright position P5 shown by the solid line in the figure to the fall position P6 shown by the chain line. Therefore, there is no possibility that the processing table 14, the cutout piece 15a, the elevating member 27, and the like will be damaged due to a collision.

The effects expected from the above embodiment will be described below. (A) In the laser processing machine of this embodiment, the elevating mechanism 18 for elevating the workpiece 15 on the processing table 14 is not mounted on the processing table 14,
It is arranged on the bed 11 so as to correspond to a predetermined position in the moving range of the processing table 14. Therefore, the weight of the processing table 14 can be reduced. Therefore, the machining table 14 can be moved / stopped at the time of machining the work with low inertia and good responsiveness, and high-speed and high-accuracy laser machining can be performed.

(B) As described above, the lifting cylinder 2
Since the elevating mechanism 18 including 5 and the like is arranged at a fixed position without being mounted on the processing table 14, it is not necessary to give special consideration to the cylinder piping or the like, and the configuration can be simplified.

(C) Since the elevating mechanism 18 is arranged at a position corresponding to the original position P2 of the moving range of the processing table 14 apart from the processing position P1 of the laser processing machine, the laser beam is applied when the work 15 is processed. There is no possibility that the elevating mechanism 18 is irradiated with. Therefore, it is not necessary to cover and protect the lifting mechanism 18 with a cover or the like, and the structure of the lifting mechanism 18 can be further simplified.

(D) The machining table 14 is at the machining position P1.
When it is moved to the original position P2 away from, it is arranged to correspond to the lifting mechanism 18 on the bed 11. Therefore, the work 15 can be easily and safely carried in and out on the support member 16 in a state where the working table 14 is moved to the original position P2 which is separated from the working position P1.

(E) The work 15 has a plurality of lifting members 27.
Therefore, the work 15 is supported at a plurality of positions, and the work 15 is stably supported while maintaining the horizontal state.

(F) The work 15 on the elevating member 27 can be freely moved in the horizontal plane by the rotation of the ball 29, and the work 15 can be easily positioned on the working table 14.

(G) The elevating member 27 of the elevating mechanism 18 is arranged so as to be avoidable from the upright position P5 to the lying position P6.
Therefore, when the cut-out piece 15a of the work 15 collides with the elevating member 27 when the machining table 14 is moved from the machining position P1 to the original position P2, the elevating member 27 is avoided from the upright position P5 to the lying position P6. It Therefore, it is possible to prevent the processing table 14, the lifting member 27, the cutout piece 15a, and the like from being damaged.

The present invention can be modified and embodied as follows. (1) The processing table 14 is set to the original position P2 of the above embodiment.
And a lifting mechanism 18 is arranged on the bed 11 so as to correspond to the processing table 14 at the work loading / unloading position. Even with such a configuration, it is possible to obtain the same effect as that of the above embodiment.

[0037]

Since the present invention is constructed as described above, it has the following effects. According to the invention described in claim 1, since the lifting mechanism for lifting and lowering the work on the support member is not mounted on the working table, the working table can be reduced in weight and can be operated at high speed. It is possible to perform accurate laser processing and simplify the configuration.

According to the second aspect of the invention, since the elevating mechanism is arranged apart from the processing position, it is not necessary to cover the elevating mechanism with a cover or the like in order to protect the elevating mechanism from the laser beam. Further, the work can be simplified, and the work can be carried in and out of the support member easily and safely.

According to the third aspect of the present invention, since the work is supported by the plurality of elevating members, the work can be stably supported, and the work can be freely moved by the rotation of the ball to position the work. Etc. can be performed easily.

According to the fourth aspect of the present invention, when the cut-out piece of the work collides with the elevating member of the elevating mechanism, it is possible to prevent the processing table, the elevating mechanism and the like from being damaged.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing an embodiment of a lifting mechanism of a laser processing machine.

FIG. 2 is a plan view of a main part of the lifting mechanism.

FIG. 3 is a side sectional view of the main part of the lifting mechanism.

FIG. 4 is a front view showing the entire laser processing machine.

FIG. 5 is a partial front view showing an enlarged part of the lifting mechanism.

[Explanation of symbols]

11 ... Bed, 13 ... Laser processing head, 14 ... Processing table, 15 ... Work, 15a ... Cutout piece, 16b ... Work supporting surface, 18 ... Lifting mechanism, 27 ... Lifting member, 29 ...
Ball, 30 ... Spring constituting upright holding means, 31 ... Stopper constituting upright holding means, P1 ... Machining position of machining table, P2 ... Original position, P3 ... Supporting position, P4 ... Separation position, P5 ... Lifting member Upright position, P6 ... Falling position.

Claims (4)

[Claims] 1. A laser processing machine in which a processing table is movably arranged in a horizontal plane, and a workpiece supported on the processing table is processed by using a laser processing head. To move up and down at a predetermined position in the lower part of the movement range of the work support surface on the machining table to move the work between a support position on the work support surface and a separation position above the support surface. Laser machine equipped with a lifting mechanism. 2. The laser processing machine according to claim 1, wherein the elevating mechanism is arranged at a position apart from the processing position. 3. The elevating mechanism is provided with a plurality of elevating members that are simultaneously raised and lowered, and each elevating member has a ball capable of freely rotating at its upper end, and the balls support the work. The laser processing machine according to 2. 4. The laser processing machine according to claim 3, wherein the elevating member is configured to be held in an upright position by an upright holding unit including a spring and to be able to fall down against the action of the spring.