JP2023120072A - Laser blanking device - Google Patents

Abstract

An object of the present invention is to provide a laser blanking device that can cut a plate material into a blank material by laser cutting. SOLUTION: A first endless belt, a second endless belt, a first inner guide roller 11 to a tenth inner guide roller 20, a first outer guide roller 21 to a fourth outer guide roller 24, a shift frame 3a, A conveying section having a rail section 3b for sliding a shift section in which a predetermined guide roller and a shift frame 3a are integrated in the conveying direction of the plate material, and a laser section having a laser nozzle N, the rail section 3b is arranged below the outside of the first endless belt 1 and the second endless belt 2, and the shift part slides along the rail part 3b following the slide of the laser nozzle N in the front and rear direction. It is 100. [Selection diagram] Figure 2

Description

TECHNICAL FIELD The present invention relates to a laser blanking apparatus, and more particularly to a laser blanking apparatus capable of cutting a plate material with a laser beam to obtain a blank material having a desired shape.

In press working, generally, a blank material is used as a raw material, which is obtained by sequentially unwinding a long plate material wound into a coil and cutting it into a predetermined size.

A method has been developed in which such a plate material is cut by using a laser blanking device using a laser beam. According to the laser blanking apparatus, since the laser beam is used, by program-controlling the movement of the laser beam, it is possible to precisely cut the plate material into a desired shape, and there is the advantage that burrs are less likely to occur.

Such a laser blanking device includes, for example, a laser nozzle, an endless conveyor for feeding plate materials, a pair of upstream and downstream support rollers provided below the laser nozzle, and an upstream support roller. and a pull-in roller provided below the downstream-side support roller, the upstream-side support roller, the downstream-side support roller, and the pull-in roller guide the endless conveyor, and each position can be changed independently. A laser blanking device is known (see Patent Document 1, for example).

A first endless belt on the front side and a second endless belt on the rear side, and a first front upper inner guide roller, a first front lower inner guide roller, a first rear upper inner guide roller, and a first rear middle guide roller for guiding them. inner guide roller, first rear lower inner guide roller, first guide portion, second front upper inner guide roller, second front middle inner guide roller, second front lower inner guide roller, second rear upper inner guide roller, second 2 a rear lower inner guide roller, a second guide portion, and a laser nozzle disposed above a space portion between the first endless belt and the second endless belt; The shift unit, which is an integral part of the first rear-middle inner guide roller, the second front upper-inner guide roller, and the second front-middle inner guide roller, is arranged to move the laser nozzle in the front-rear direction so that it is positioned directly below the laser nozzle. A driven shift portion, which slides following and integrates the first rear lower inner guide roller and the second front lower inner guide roller, extends in the front-rear direction provided on both sides of the first endless belt and the second endless belt. There is known a laser blanking device that is slidable along a Y-axis driven shift rail and that moves in the direction opposite to the movement of the shift section following the sliding of the shift section (see, for example, Patent Document 2). ).

Japanese Patent No. 5916170 Japanese Patent No. 6792728

However, in the laser blanking device described in Patent Document 1, since it consists of one endless conveyor (endless belt), for example, only laser-cut blanks are conveyed without conveying long plate materials. When conveying, there is a risk that the plate material and the endless belt will rub against each other and the plate material will be damaged.

On the other hand, in the laser blanking device described in Patent Document 2, the first endless belt and the second endless belt are provided. can be prevented.
However, the laser blanking apparatus described in Patent Document 2 has the drawback that the conveying parts cannot be arranged side by side when necessary. By arranging the conveying portions side by side, it becomes possible to speed up the conveying and processing of the plate material. That is, in the laser blanking device described in Patent Document 2, the driven shift section is provided below the shift section, and the Y-axis driven shift rail is provided on both side surfaces of the first endless belt and the second endless belt. However, the Y-axis driven shift rail becomes an obstacle, and the conveying portion of the laser blanking device cannot be arranged side by side.
Further, in the laser blanking device described in Patent Document 2, if the followability of the driven shift portion is insufficient, the endless belt may meander.
The present invention corresponds to an improved invention in which the laser blanking device described in Patent Document 2 is further improved.

The present invention has been made in view of the above circumstances, and it is possible to arrange conveying units side by side in the width direction, and to cut a plate material into a blank material by laser cutting while suppressing damage to the plate material. It is an object of the present invention to provide a laser blanking device capable of

As a result of intensive studies in order to solve the above problems, the present inventors found that the second inner guide roller, the third inner guide roller, the fifth inner guide roller, the sixth inner guide roller, and the ninth inner guide roller are provided without the driven shift portion. A shift portion that integrates a guide roller, a tenth inner guide roller, and a shift frame slides along the rail portion following the sliding of the laser nozzle in the front-rear direction, and the rail portion is the first endless belt. The present inventors have found that the above problems can be solved by arranging the belt outside and below the second endless belt, and have completed the present invention.

The laser blanking device of the present invention cuts the plate material with a laser beam emitted from a laser nozzle while conveying a long plate material to make a blank material. A first endless belt in front and a second endless belt in back, which are connected for conveying, are arranged so as to be in contact with the inner surface of the first endless belt, and are for guiding the front side of the first endless belt upward. A first inner guide roller, a second inner guide roller for guiding the upper side of the first endless belt to the rear side, a third inner guide roller for guiding the rear side of the first endless belt to the lower side, and the first endless belt A fourth inner guide roller for guiding the lower side of the belt to the front side, a fifth inner guide roller positioned between the third inner guide roller and the fourth inner guide roller, and the outer surface of the first endless belt and guides the first endless belt between the fourth and fifth inner guide rollers above the fourth and fifth inner guide rollers. a roller and a second outer guide roller in the rear; a sixth inner guide roller disposed so as to be in contact with the inner surface of the second endless belt and guiding the front side of the second endless belt upward; the upper side of the second endless belt; an eighth inner guide roller for guiding the rear side of the second endless belt downward; a seventh inner guide roller for guiding the lower side of the second endless belt forward; 9 inner guide rollers, a 10th inner guide roller positioned between the 8th inner guide roller and the 9th inner guide roller, and an 8th inner guide roller disposed so as to be in contact with the outer surface of the second endless belt, and a third front outer guide roller and a fourth rear outer guide roller for guiding the second endless belt between the eighth inner guide roller and the tenth inner guide roller above the eighth inner guide roller and the tenth inner guide roller; a shift frame respectively provided on both sides for simultaneously supporting two inner guide rollers, a third inner guide roller, a fifth inner guide roller, a sixth inner guide roller, a ninth inner guide roller and a tenth inner guide roller; 2 inner guide rollers, a 3rd inner guide roller, a 5th inner guide roller, a 6th inner guide roller, a 9th inner guide roller, a 10th inner guide roller, and a shift portion integrated with a shift frame are arranged in the conveying direction of the plate material. a rail portion for sliding; and a laser portion having a laser nozzle disposed above the space between the first endless belt and the second endless belt; and a fifth inner guide. The roller is positioned between the first outer guide roller and the second outer guide roller in the front-rear direction, and the tenth inner guide roller is positioned between the third outer guide roller and the fourth outer guide roller in the front-rear direction. The rail portion is arranged outside and below the first endless belt and the second endless belt to support the shift portion from below, and the shift portion slides the laser nozzle forward and backward. and slides along the rail portion.

In the laser blanking device of the present invention, it is preferable that the shift frame has an inverted T shape when viewed from the side.

In the laser blanking device of the present invention, the fourth inner guide roller drives the first endless belt, the eighth inner guide roller drives the second endless belt, and drives the first endless belt. , and the driving of the second endless belt are preferably independent of each other.

In the laser blanking device of the present invention, the second outer guide roller and the third outer guide roller are independently movable in the front-rear direction, and the movement of the second outer guide roller moves the first endless belt. is adjusted, and the tension of the second endless belt is preferably adjusted by movement of the third outer guide roller.

Preferably, the laser blanking device of the present invention further includes a spatter receiving box extending in the width direction and arranged in the space, and the spatter receiving box is supported by the shift frame.

In the laser blanking device of the present invention, it is preferable that the first outer guide roller, the second outer guide roller, the third outer guide roller, and the fourth outer guide roller are arranged linearly in the front-rear direction.

In the laser blanking device of the present invention, it is preferable that the third inner guide roller, the fifth inner guide roller, the ninth inner guide roller, and the tenth inner guide roller are arranged linearly in the front-rear direction.

In the laser blanking device of the present invention, the conveying portions are arranged side by side in the width direction, and the laser portion is composed of X-axis rails extending over the entire width of both conveying portions and front-rear direction provided on both sides of the X-axis rails. a pair of Y-axis rails extending to the Y-axis rails, the laser nozzle being slidable guided by the X-axis rails, and the X-axis rails being slidable guided by the Y-axis rails. preferably.

Since the laser blanking device of the present invention is provided with the first endless belt and the second endless belt, by driving each of them independently, the plate material and the first endless belt rub against each other, and the plate material is damaged. can be suppressed. For example, it is possible to stop conveying the plate material to be laser-cut and convey only the laser-cut blank material.
Specifically, the drive roller that drives the first endless belt and the drive roller that drives the second endless belt may be made independent of each other.

Here, it is preferable that the fourth inner guide roller drives the first endless belt and the eighth inner guide roller drives the second endless belt.
Since the fourth inner guide roller is positioned on the lower front side of the transport section and the eighth inner guide roller is positioned on the lower rear side of the transport section, a sufficient space for installing the drive source can be secured.
Further, since the fourth inner guide roller and the eighth inner guide roller are not included in the shift portion, it is not necessary to slide the drive source or the like as the shift portion. That is, it is possible to prevent a weight load from being applied to the sliding shift portion.

In the laser blanking device of the present invention, by arranging the rail portion on the outer lower side of the first endless belt and the second endless belt instead of the side surfaces on both sides, the device itself can be made compact and the transport It becomes possible to arrange the parts side by side in the width direction.
As a result, it is possible to speed up the conveyance and processing of the plate material as required.

In the laser blanking device of the present invention, the second inner guide roller, the third inner guide roller, the fifth inner guide roller, the sixth inner guide roller, the ninth inner guide roller, the tenth inner guide roller and the shift frame are integrated. By making the shift part slide along the rail part following the sliding of the laser nozzle in the front-rear direction, the plate material can be made into a blank material by laser cutting without providing the conventional driven shift part. be able to.
Moreover, since the laser blanking device does not have a driven shift portion, it is relatively easy to correct the meandering of the first endless belt or the second endless belt. By the way, in the case of having a shift section and a driven shift section that are interlocked, it is necessary to correct not only the shift section but also the driven shift section.
Further, since the laser blanking device does not have a driven shifter, it is possible to speed up the transportation. It should be noted that it is difficult to increase the speed if the shift section and the driven shift section are provided in conjunction with each other.

In the laser blanking device of the present invention, the shift frames on both sides are formed in an inverted T shape in side view, thereby preventing interference with other guide rollers and the like, and lowering the center of gravity of the shift section. Therefore, stable sliding becomes possible.

In the laser blanking device of the present invention, the second outer guide roller is used to adjust the tension of the first endless belt, and the third outer guide roller is used to adjust the tension of the second endless belt. It is possible to easily adjust the tension of these belts without complicating the arrangement of the rollers.

In the laser blanking apparatus of the present invention, spatter and fine dust generated by laser cutting can be collected by further providing a spatter receiving box extending in the width direction and arranged in the space.
In addition, since the spatter receiving box is supported by the shift frame, it functions as a shift section to follow the longitudinal slide of the laser nozzle, so that the spatter and fine dust can be reliably collected. .

In the laser blanking device of the present invention, the first outer guide roller, the second outer guide roller, the third outer guide roller, and the fourth outer guide roller are arranged linearly in the front-rear direction, thereby making the device itself more flexible. It can be made compact.
Further, by arranging the third inner guide roller, the fifth inner guide roller, the ninth inner guide roller, and the tenth inner guide roller in a straight line in the front-rear direction, the weight load applied to the shift frame in the front-rear direction is balanced. It will be excellent for As a result, the sliding of the shift portion is stabilized and smoother.

In the laser blanking apparatus of the present invention, by arranging the conveying units side by side in the width direction, it is possible to speed up the conveying and processing of the plate material as described above. That is, since the plate material is handled by two conveying units, the length of each roller can be shortened. As a result, the deflection of the roller itself is also reduced, so that the speed of conveyance can be increased. Incidentally, if the speed is increased while the rollers are bent, meandering of the endless belt may occur.
Moreover, since the weight of the conveying section is halved, the load on the drive source can be reduced.

In the laser blanking device of the present invention, when the laser nozzle is guided by the X-axis rail and is slidable, and the X-axis rail is guided by the Y-axis rail and is slidable, these By using them in combination, it is possible to move the laser nozzle in all directions, such as front and back, left and right, oblique directions, and curved directions. As a result, it is possible to perform laser processing into a complicated shape on the conveyed plate material.

FIG. 1 is a perspective explanatory view showing a laser blanking device according to this embodiment. FIG. 2 is a side view schematically showing the conveying section of the laser blanking device according to this embodiment. FIG. 3 is an external side view of the conveying unit shown in FIG. 2 with a frame added. FIG. 4(a) is a side view for explaining a state in which the shift section is slid forward in the conveying section of the laser blanking device according to the present embodiment. FIG. 4(b) is a side view for explaining a state in which the shift section is slid rearward in the conveying section of the laser blanking device according to the present embodiment. FIG. 5(a) is a schematic plan view showing an example of laser processing of a plate material using the laser blanking apparatus according to the present embodiment. FIG. 5(b) is a schematic plan view showing another example in which a plate material is laser-processed using the laser blanking apparatus according to the present embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will now be described in detail with reference to the drawings as necessary. In the drawings, the same elements are denoted by the same reference numerals, and overlapping descriptions are omitted. In addition, unless otherwise specified, positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to the illustrated ratios.

The laser blanking apparatus according to the present embodiment cuts a long plate material from the front to the rear while cutting it with a laser beam emitted from a laser nozzle to make a blank material of a desired shape. It is a device that transports from the front to the back.
Since the laser blanking device performs laser processing continuously while conveying the plate material, the cutting efficiency is high and the productivity is excellent.

Here, the overall shape of the elongated plate material is not particularly limited, but generally it is in a coiled state.
The material of the plate material is not particularly limited as long as it can be cut with a laser beam, and includes metals such as iron, aluminum, and titanium, alloys such as steel (including high-tensile materials and ultra-high-tensile materials), acrylics, and the like. resins, wood, composites thereof, and the like.
In addition, when the plate material is a metal or an alloy, the thickness of the plate material is preferably 20 mm or less, more preferably 0.1 to 5 mm, from the viewpoint of high precision and reliable cutting with a laser beam. Used.
Also, the shape of the blank after laser cutting is not particularly limited.

In this specification, the term “forward” means the upstream side (the left side of the paper in FIG. 2) in conveying the plate material, and the term “rearward” means the downstream side (in FIG. 2) in conveying the plate material. The "front-back direction" means the conveying direction of the plate material and its opposite direction, and the "left-right direction" means the width direction of the plate material.
Also, "above" means upward in the vertical direction, and "below" means downward in the vertical direction.

FIG. 1 is a perspective explanatory view showing a laser blanking device according to this embodiment.
As shown in FIG. 1, the laser blanking device 100 according to the present embodiment includes a conveying unit 100a arranged in parallel in the left-right direction and a and an attached laser portion 100b.
In the laser blanking device 100, frames F for supporting guide rollers, which will be described later, are installed on both sides of the conveying section 100a. At this time, the frame F1 (F) between the adjacent conveying units 100a is a common frame.
A reinforcing frame F3 (F) is installed on the upper end of the frame F to reinforce the laser frame F4, which will be described later.

In the laser blanking device 100, since the conveying units 100a are arranged side by side, it is possible to speed up the conveying and processing of the plate material.
Since the transport units 100a arranged in parallel have the same configuration, one transport unit 100a will be described.

FIG. 2 is a side view schematically showing the conveying section of the laser blanking apparatus according to this embodiment, and FIG. 3 is an external side view of the conveying section shown in FIG. 2 with a frame added.
2 and 3 also show the laser nozzle N of the laser section, the plate material X, and the blank material X1. Also, the description of the reinforcing frame F3 is omitted.
As shown in FIG. 2, the conveying unit 100a of the laser blanking device 100 according to the present embodiment guides the first endless belt 1 and the second endless belt 2, and the first endless belt 1 or the second endless belt 2. a plurality of guide rollers, a shift frame 3a for supporting predetermined guide rollers, a spatter receiving box 4 disposed in the space S, a predetermined guide roller, the shift frame 3a and the spatter receiving box 4 and a rail portion 3b for sliding the integrated shift portion.
The laser nozzle N of the laser section 100b is arranged above the space S between the first endless belt 1 and the second endless belt 2. As shown in FIG.

In the conveying section 100a, the plate material X conveyed by the first endless belt 1 is subjected to laser processing by the laser nozzle N. As shown in FIG.
At this time, as the laser nozzle N slides in the front-rear direction, the shift section slides. Details of the shift section will be described later.
Then, the cut blank material X1 is conveyed rearward by the second endless belt 2 .
According to the laser blanking device 100, the conveyed plate material X can be continuously cut into the blank material X1 by laser cutting.

As described above, the first endless belt 1 and the second endless belt 2 are connected in series in the front-rear direction to convey the plate material X and the blank material X1 from the front to the rear. In this specification, the front is called the first endless belt 1 and the rear is called the second endless belt 2 .
In addition, the first endless belt 1 and the second endless belt 2 are arranged apart from each other by a certain distance. The area between them is the space S.

The first endless belt 1 and the second endless belt 2 are independently driven by drive rolls, which will be described later. As a result, not only can the first endless belt 1 and the second endless belt 2 be driven at the same speed, but also, for example, when it is desired to cut only one sheet, after cutting, the first endless belt 1 is stopped and the second endless belt is driven. Only the belt 2 can be driven.
As a result, it is possible to prevent the plate material X from rubbing against the first endless belt 1 and damaging the plate material X.

The first endless belt 1 and the second endless belt 2 are guided in a substantially rectangular shape in a side view by a plurality of guide rolls. That is, the front side of the endless belt is guided in the order of upper side, rear side, and lower side.
Further, the guide rolls consist of a guide roller arranged to contact the inner surface of the endless belt (hereinafter referred to as "inner guide roller") and a guide roller arranged to contact the outer surface of the endless belt (hereinafter referred to as "outer guide roller"). (referred to as "guide rollers").

Specifically, the conveying unit 100a includes, as inner guide rollers for guiding the first endless belt 1, a first inner guide roller 11 for guiding the front side of the first endless belt 1 upward, and the first endless belt 1 A second inner guide roller 12 for guiding the upper side of the belt to the rear side, a third inner guide roller 13 for guiding the rear side of the first endless belt 1 to the lower side, and the lower side of the first endless belt 1 and a fifth inner guide roller 15 positioned between the third inner guide roller 13 and the fourth inner guide roller 14 .
Further, as outer guide rollers for guiding the first endless belt 1, the first endless belt 1 between the fourth inner guide roller 14 and the fifth inner guide roller 15 is guided by the fourth inner guide roller 14 and the fifth inner guide roller 15. It has a front first outer guide roller 21 and a rear second outer guide roller 22 for guiding upwards.
In addition, you may have a guide roller further as needed.

Similarly, the conveying unit 100a includes, as inner guide rollers for guiding the second endless belt 2, a sixth inner guide roller 16 for guiding the front side of the second endless belt 2 upward, and an inner guide roller 16 for guiding the front side of the second endless belt 2 upward. a seventh inner guide roller 17 for guiding the belt to the rear side, an eighth inner guide roller 18 for guiding the rear side of the second endless belt 2 to the lower side, and a lower side of the second endless belt 2 to the front side and a tenth inner guide roller 20 positioned between the eighth inner guide roller 18 and the ninth inner guide roller 19 .
Further, as outer guide rollers for guiding the second endless belt 2, the second endless belt 2 between the ninth inner guide roller 19 and the tenth inner guide roller 20 is guided by the ninth inner guide roller 19 and the tenth inner guide roller 20. It has a front third outer guide roller 23 and a rear fourth outer guide roller 24 for guiding upwards.

Here, the fifth inner guide roller 15 is located below the first outer guide roller 21 and the second outer guide roller 22 in the vertical direction, and is located below the first outer guide roller 21 and the second outer guide roller 22 in the front-rear direction. It is located between rollers 22 . That is, the first endless belt 1 has a third inner guide roller 13, a fifth inner guide roller 15, a second outer guide roller 22, a first outer guide roller 21, a In the order of 4 inner guide rollers 14, they are guided in an S shape when viewed from the side.
In addition, the tenth inner guide roller 20 is located below the third outer guide roller 23 and the fourth outer guide roller 24 in the vertical direction, and is positioned below the third outer guide roller 23 and the fourth outer guide roller 24 in the front-rear direction. Located between 24. That is, the second endless belt 2 has an eighth inner guide roller 18, a fourth outer guide roller 24, a third outer guide roller 23, a tenth inner guide roller 20, a In the order of 9 inner guide rollers 19, they are guided in an S shape when viewed from the side.

A first outer guide roller 21, a second outer guide roller 22, a third outer guide roller 23, and a fourth outer guide roller 24 are linearly arranged in the front-rear direction. As a result, the distance between the upper side and the lower side of the first endless belt 1 and the second endless belt 2 can be minimized, so that the device itself can be made more compact. In addition, it is possible to secure a sufficient space below the first endless belt 1 and the second endless belt 2 for arranging the rail portion 3b.

In the conveying section 100a, the fourth inner guide roller 14 is a drive roller provided with a drive source for driving the first endless belt 1, and the eighth inner guide roller 18 drives the second endless belt 2. It is a driving roller provided with a driving source for driving.
The fourth inner guide roller 14 is positioned under the front of the first endless belt 1, and the eighth inner guide roller 18 is positioned under the rear of the second endless belt 2. It has the advantage that it is relatively easy to install and that a sufficient space for installation can be secured.
Since the fourth inner guide roller 14 and the eighth inner guide roller 18 are driven independently, the first endless belt 1 and the second endless belt 2 can be driven independently as described above. It is possible.
The guide rollers other than the fourth inner guide roller 14 and the eighth inner guide roller 18, which are driving rollers, are freely rotating rollers.

A drive source for driving the drive roller is not particularly limited, but a servo motor, a DC motor, an AC inverter motor, a hydraulic motor, or the like is used.
Among these, a servomotor is preferably used as the drive source.
A reduction gear or a transmission may be attached to the drive source.

In the conveying section 100a, the second outer guide roller 22 is a tension adjustment roller for adjusting the tension of the first endless belt 1, and the third outer guide roller 23 adjusts the tension of the second endless belt 2. It is a tension adjustment roller for adjustment.
The second outer guide roller 22 and the third outer guide roller 23 are independently movable in the front-rear direction, thereby adjusting the tension of the endless belt. For example, the tension of the first endless belt 1 can be increased by moving the second outer guide roller 22 backward, and the tension of the second endless belt 2 can be increased by moving the third outer guide roller 23 forward. can be improved.
Therefore, in the conveying section 100a, it is possible to easily adjust the tension of these belts without complicating the arrangement of the rollers.

As shown in FIG. 3, the second outer guide roller 22 and the third outer guide roller 23 are supported by the frame F. As shown in FIG.
At this time, the frame F is provided with window portions Fa at positions corresponding to the second outer guide roller 22 and the third outer guide roller 23, respectively.
In the conveying section 100a, the second outer guide roller 22 and the third outer guide roller 23 can be moved from the window Fa to adjust the tension, and the front and rear ends of the window Fa can move the second outer guide roller 22 and the third outer guide roller 23. It restricts the movement of the roller 22 and the third outer guide roller 23 .

Returning to FIG. 2, in the conveying section 100a, the second inner guide roller 12, the third inner guide roller 13, the fifth inner guide roller 15, the sixth inner guide roller 16, the ninth inner guide roller 19 and the tenth inner guide roller Shift frames 3a are provided on both sides of the rollers 20 (hereinafter collectively referred to as a "shift guide roller group") to support them.
That is, the shift guide roller groups are simultaneously supported by the shift frames 3a on both sides.
Guide rollers other than the shift guide roller group are supported by a normal frame F (see FIG. 3).

The shift frame 3a has an inverted T shape when viewed from the side. As a result, the shift frame 3a can be made as lightweight as possible, and can reliably support the shift guide roller group while preventing interference with guide rollers other than the shift guide roller group.
In addition, since the center of gravity of the shift frame 3a is lowered compared to the case where the shift frame 3a has a rectangular shape as viewed from the side, the sliding in the front-rear direction as the shift portion becomes more stable.

At this time, among the shift guide roller group supported by the shift frame 3a, the third inner guide roller 13, the fifth inner guide roller 15, the ninth inner guide roller 19, and the tenth inner guide roller 20 are arranged linearly in the front-rear direction. arranged in a pattern. As a result, the front and rear weight loads applied to the shift frame 3a are well balanced. As a result, the shift frame 3a slides more stably and smoothly in the front-rear direction as the shift portion.
At this time, the first endless belt 1 guided between the third inner guide roller 13 and the fifth inner guide roller 15 and the second endless belt guided between the ninth inner guide roller 19 and the tenth inner guide roller 20 The endless belt 2 is preferably on the same plane.

The space S is provided between the first endless belt 1 and the second endless belt 2 as described above.
The space S becomes larger as the distance between the front and back goes downward.
That is, the rear side of the first endless belt 1 guided from the second inner guide roller 12 to the third inner guide roller 13 is not guided in the vertical direction but is guided obliquely forward. Further, the front side of the second endless belt 2 guided from the ninth inner guide roller 19 to the sixth inner guide roller 16 is not guided in the vertical direction but is guided obliquely forward.
As a result, spatter and fine dust scattered by laser cutting can be sufficiently collected, and a space for installing a vacuum device, which will be described later, can be sufficiently secured.
The shortest distance D between the front and rear of the space S is preferably 25 to 40 mm. Incidentally, the upper end of the space S is the shortest distance D.

In the transport section 100a, the space S is provided with a spatter receiving box 4 extending in the left-right direction.
The spatter receiving box 4 has a box-like shape with an upper opening, and has a structure in which at least the opening expands in the left-right direction.
The spatter receiving box 4 is provided with a suction opening (not shown) on its side wall, and a vacuum device (not shown) for sucking the inside of the spatter receiving box 4 is installed in the suction opening. installed. Therefore, spatters and fine dust generated by laser cutting are positively accommodated in the spatter receiving box 4 .

Also, the spatter receiving box 4 is supported and fixed to the above-described shift frame 3a by a fixture (not shown). Therefore, like the shift guide roller group, the spatter receiving box 4 is integrated with the shift frame 3a and slides in the front-rear direction as a shift portion. That is, the spatter receiving box 4 follows the slide of the laser nozzle N in the front-rear direction.
Therefore, in the conveying section 100a, the spatter and fine dust generated by the laser cutting can follow the laser nozzle N and be collected in the spatter receiving box 4. FIG. As a result, it is possible to suppress adhesion of spatters and fine dust to the endless belt.

In the transport section 100a, the rail section 3b is for sliding a shift section, which will be described later. Directly, the rail portion 3b slides the shift frame 3a via a base portion 31 attached and fixed to the lower portion thereof.
The length of the rail portion 3b in the front-rear direction is designed so that at least the movable region of the laser nozzle N in the front-rear direction can be sufficiently followed by the shift portion.

The rail portion 3 b is arranged outside and below the first endless belt 1 and the second endless belt 2 . Accordingly, in the laser blanking device 100, the rail portion 3b does not protrude to the side of the device, so that the device itself can be made compact.
It is also possible to arrange the laser blanking apparatuses 100 side by side in the width direction and simultaneously process a wide sheet material using both apparatuses.
Moreover, the rail portion 3b supports the shift portion from below. As a result, energy consumption during sliding can be reduced. Also, the sliding of the shift portion can be stabilized.

The shift section comprises at least a second inner guide roller 12, a third inner guide roller 13, a fifth inner guide roller 15, a sixth inner guide roller 16, a ninth inner guide roller 19 and a tenth inner guide roller 20. A group of guide rolls, a spatter receiving box 4, and a pair of shift frames 3a for supporting them are integrated.
Therefore, sliding the shift section means sliding all of them at the same time.

As described above, the shift portion slides along the rail portion 3b in the front-rear direction, following the sliding of the laser nozzle N in the front-rear direction.
As a result, laser processing can be performed while the laser nozzle N itself is largely slid back and forth.
That is, it is possible to greatly expand the area in which laser processing is possible, and as a result, it is also possible to improve the conveying speed of the plate material X.
In addition, it is possible to prevent the first endless belt 1 and the second endless belt 2 from being damaged by the laser beam during laser cutting. That is, since the relief space portion S directly below the plate material X also slides as a shift portion, it is possible to prevent the endless belt from being out of the laser light passage area and being damaged by the laser light.

In addition, as described above, the spatter receiving box 4 provided in the space S also functions as a shift unit and follows the sliding of the laser nozzle N in the front-rear direction, so that the spatter and fine dust generated by the laser processing are reliably collected. can do. As described above, since the spatter receiving box 4 extends in the left-right direction, spatters and fine dust are collected even if the shift portion does not follow the sliding of the laser nozzle N only in the left-right direction. can do.

FIG. 4(a) is a side view for explaining a state in which the shift section is slid forward in the conveying section of the laser blanking device according to the present embodiment, and FIG. FIG. 10 is a side view for explaining a state in which the shift section is slid rearward in the conveying section of the laser blanking device;
As shown in FIG. 4A, when the shift portion slides forward, the fifth inner guide roller 15 approaches the first outer guide roller 21, and the tenth inner guide roller 20 moves toward the third outer guide roller. It moves forward until it approaches the roller 23 . Note that the tenth inner guide roller 20 does not go further forward than the third outer guide roller 23 in the front-rear direction.
On the other hand, as shown in FIG. 4A, when the shift portion slides rearward, the fifth inner guide roller 15 approaches the second outer guide roller 22 and the tenth inner guide roller 20 moves toward the fourth roller. It moves backward until it approaches the outer guide rollers 24 . Note that the fifth inner guide roller 15 does not go further rearward than the second outer guide roller 22 in the front-rear direction.

For this reason, in the conveying section 100a, when the shift section slides, the fifth inner guide roller 15 that constitutes the shift section is positioned between the first outer guide roller 21 and the second outer guide roller 22 in the front-rear direction. , and the tenth inner guide roller 20 that constitutes the shift portion slides between the third outer guide roller 23 and the fourth outer guide roller 24 in the front-rear direction. .
Therefore, in the conveying section 100a, the distance between the first outer guide roller 21 and the second outer guide roller 22 and the distance between the third outer guide roller 23 and the fourth outer guide roller 24 It is the same as or longer than the sliding movable distance of the nozzle N in the front-rear direction.

Returning to FIG. 1, the laser section 100b includes a laser nozzle N disposed above the space S between the first endless belt 1 and the second endless belt 2, and an X-axis rail extending over the entire width of both conveying sections. 52 and a pair of Y-axis rails 51 provided on both sides of the X-axis rail 52 and extending in the front-rear direction.

The laser nozzle N is arranged above the space S between the first endless belt 1 and the second endless belt 2, as described above.
The laser nozzle N can irradiate laser light downward. Then, the plate material X is cut by being irradiated with a laser beam.
Here, the type of laser light is not particularly limited, but solid lasers, liquid lasers, gas lasers, semiconductor lasers, free electron lasers, metal vapor lasers, chemical lasers, and the like can be used, for example.

The X-axis rail 52 and the Y-axis rail 51 are provided above the first endless belt 1 and the second endless belt 2 .
The Y-axis rails 51 extend in the front-rear direction and are provided on the laser frames F4 on both sides of the conveying section 100a arranged side by side. That is, the laser frame F4 is arranged on both sides of the one transport section 100a opposite to the other transport section 100a, and on both sides of the other transport section 100a opposite to the one transport section 100a. and Note that the laser frame F4 is installed outside the frame F2 (F) described above.
Also, the pair of Y-axis rails 51 are fixed to the laser frame F4.
On the other hand, the X-axis rail 52 extends in the left-right direction, and both ends of the X-axis rail 52 are attached to the Y-axis rail 51 so as to straddle the transporting units 100a arranged in parallel.

In the laser blanking device 100, the laser nozzle N is guided by the X-axis rail 52 and is slidable in the left-right direction, and the X-axis rail 52 is guided by the Y-axis rail 51 and is slidable in the front-rear direction. It is possible.
Therefore, in the laser section 100b, the longitudinal slide distance of the laser nozzle N depends on the length of the Y-axis rail 51, and the lateral slide distance of the laser nozzle N depends on the length of the X-axis rail 52. do.

In the laser section 100b, the laser nozzle N is controlled by combining the sliding of the laser nozzle N on the X-axis rail 52 and the sliding of the X-axis rail 52 on the Y-axis rail 51, so that the laser nozzle N is moved to the conveyed plate material X. On the other hand, it can be slid in all directions, such as the front-rear direction, the left-right direction, the oblique direction, and the curved direction. As a result, it becomes possible to perform laser processing into a complicated shape on the conveyed plate material.

Next, a processing method using the laser blanking device 100 will be described with an example.
FIG. 5(a) is a schematic plan view showing an example of laser processing of a plate material using the laser blanking apparatus according to the present embodiment. In this example, since the X-axis rail 52 does not slide along the Y-axis rail 51, the shift section does not slide along the rail section 3b either.

First, as shown in FIG. 5( a ), in the laser blanking device 100 , a flat sheet material X unwound from a coil or the like is continuously conveyed by the first endless belt 1 .
Then, while irradiating the laser beam, the laser nozzle N is guided by the X-axis rail 52 and slides in the direction of the arrow A1. Then, the plate material X is cut obliquely.

Next, the laser nozzle N slides along the X-axis rail 52 in the opposite direction of the arrow A2 while continuously irradiating the laser beam. Then, the plate material X is cut in a doglegged shape. Note that the space S does not move.
As a result, triangular blanks obtained by cutting the plate material X in the oblique direction and the reverse oblique direction are obtained and conveyed by the second endless belt 2 .

FIG. 5(b) is a schematic plan view showing another example in which a plate material is laser-processed using the laser blanking apparatus according to the present embodiment. In the case of this example, the X-axis rail 52 slides along the Y-axis rail 51, so the shift section follows this and slides along the rail section 3b.

First, as shown in FIG. 6B , in the laser blanking device 100 , a flat sheet material X unwound from a coil or the like is continuously conveyed by the first endless belt 1 .
While irradiating the laser beam, the laser nozzle N is guided by the X-axis rail 52 and slides in the direction of arrow A1, and the X-axis rail 52 is guided by the Y-axis rail 51 and slides in the direction of arrow B1. slide. Assume that the X-axis rail 52 slides at the same speed as the first endless belt 1 at this time. Then, the plate material X is cut in the vertical direction.

Next, the irradiation of the laser beam is stopped, and the laser nozzle N is guided by the X-axis rail 52 and slides in the opposite direction of the arrow A2, and the X-axis rail 52 is guided by the Y-axis rail 51 and moves in the opposite direction. Slide in the direction of arrow B2. Then, the laser nozzle N and the X-axis rail 52 return to their original positions.
As a result, a rectangular blank material obtained by cutting the plate material X in the vertical direction is obtained, which is next conveyed by the second endless belt 2 .

In the processing method using the laser blanking device 100 according to the present embodiment, the laser beam is irradiated onto the plate material X while the laser nozzle N is slid. The plate material X can be laser-processed into a desired shape.
Further, by sliding the shift portion so as to follow the sliding of the laser nozzle N, it is possible to prevent the first endless belt 1 or the second endless belt 2 from being damaged by the laser beam.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments.

In the laser blanking apparatus 100 according to the present embodiment, two conveying units 100a are arranged side by side, but the number of conveying units 100a may be one, or three or more may be arranged side by side.

In the conveying section 100a of the laser blanking device 100 according to the present embodiment, the first outer guide roller 21, the second outer guide roller 22, the third outer guide roller 23, and the fourth outer guide roller 24 are arranged linearly in the front-rear direction. , but not required.
Further, among the shift guide roller group supported by the shift frame 3a, the third inner guide roller 13, the fifth inner guide roller 15, the ninth inner guide roller 19, and the tenth inner guide roller 20 are arranged linearly in the front-rear direction. , but not required.

In the conveying unit 100a of the laser blanking device 100 according to the present embodiment, the fourth inner guide roller 14 is a driving roller provided with a driving source for driving the first endless belt 1, but is limited to this. Alternatively, the first inner guide roller 11, the first outer guide roller 21 or the second outer guide roller 22 may be drive rollers. Since these guide rolls are not included in the shift section, at least an increase in the weight of the shift section can be avoided.
Also, the eighth inner guide roller 18 is a drive roller provided with a drive source for driving the second endless belt 2, but is not limited to this, and the seventh inner guide roller 17 and the third outer guide roller 23 or the fourth outer guide roller 24 may be a drive roller. Since these guide rolls are not included in the shift section, at least an increase in the weight of the shift section can be avoided.

In the conveying section 100a of the laser blanking device 100 according to this embodiment, the second outer guide roller 22 is a tension adjusting roller for adjusting the tension of the first endless belt 1, and the third outer guide roller 23 is a tension adjusting roller for adjusting the tension of the second endless belt 2, but the method of adjusting the tension is not limited to this.
For example, the tension may be adjusted by bringing an outer roller into contact with the endless belt at an arbitrary position and adjusting the extent to which the outer roller pushes the endless belt.

In the conveying portion 100a of the laser blanking device 100 according to the present embodiment, the space portion S increases as the distance between the front and rear ends decreases, but this is not essential.
Further, the rear side of the first endless belt 1 guided from the second inner guide roller 12 to the third inner guide roller 13 is not guided in the vertical direction but is guided obliquely forward, and the ninth inner guide roller The front side of the second endless belt 2 which is guided from the roller 19 to the sixth inner guide roller 16 is not guided vertically but is guided obliquely forward, but this is also not essential.

In the conveying unit 100a of the laser blanking device 100 according to the present embodiment, the spatter receiving box 4 is provided with a suction opening on its side wall, and the inside of the spatter receiving box 4 is sucked through the suction opening. A vacuum device is installed for cleaning, but is not required.

INDUSTRIAL APPLICABILITY The present invention is used as a laser blanking device for laser cutting a plate material into a desired shape to obtain a blank material. According to the laser blanking apparatus of the present invention, the conveying units can be arranged side by side in the width direction, and the plate material can be cut into blanks by laser cutting while suppressing damage to the plate material.

DESCRIPTION OF SYMBOLS 1... 1st endless belt 100... Laser blanking apparatus 100a... Conveyance part 100b... Laser part 11... 1st inner guide roller 12... 2nd inner guide roller 13... Third inner guide roller 14 Fourth inner guide roller 15 Fifth inner guide roller 16 Sixth inner guide roller 17 Seventh inner guide roller 18 Eighth inner guide roller 19... Ninth inner guide roller 2... Second endless belt 20... Tenth inner guide roller 21... First outer guide roller 22... Second outer guide roller 23... Third Outer guide roller 24 Fourth outer guide roller 31 Base portion 3a Shift frame 3b Rail portion 4 Spatter receiving box 51 Y-axis rail 52 X-axis rail F, F1, F2 Frame F3 Reinforcement frame F4 Laser frame Fa Window N Laser nozzle S Space X Plate X1 Blank material

Claims (8)

A laser blanking device that cuts a long plate material with a laser beam emitted from a laser nozzle to make a blank material while conveying the plate material,
a front first endless belt and a rear second endless belt that are connected to convey the plate material from the front to the rear;
a first inner guide roller disposed in contact with the inner surface of the first endless belt for guiding the front side of the first endless belt upward; and for guiding the upper side of the first endless belt rearward. a second inner guide roller, a third inner guide roller for guiding the rear side of the first endless belt downward, a fourth inner guide roller for guiding the lower side of the first endless belt forward, and , a fifth inner guide roller positioned between the third inner guide roller and the fourth inner guide roller;
The fourth inner guide roller and the fifth inner guide roller are arranged so as to contact the outer surface of the first endless belt and move the first endless belt between the fourth inner guide roller and the fifth inner guide roller. a front first outer guide roller and a rear second outer guide roller that guide upwards;
a sixth inner guide roller disposed in contact with the inner surface of the second endless belt for guiding the front side of the second endless belt upward; and for guiding the upper side of the second endless belt rearward. a seventh inner guide roller, an eighth inner guide roller for guiding the rear side of the second endless belt downward, a ninth inner guide roller for guiding the bottom side of the second endless belt forward, and , a tenth inner guide roller positioned between the eighth inner guide roller and the ninth inner guide roller;
The eighth inner guide roller and the tenth inner guide roller are disposed so as to contact the outer surface of the second endless belt, and the second endless belt between the eighth inner guide roller and the tenth inner guide roller are arranged to contact the outer surface of the second endless belt. a front third outer guide roller and a rear fourth outer guide roller that guide upward;
The second inner guide roller, the third inner guide roller, the fifth inner guide roller, the sixth inner guide roller, the ninth inner guide roller and the tenth inner guide roller are provided on both sides to simultaneously support the rollers. a shift frame fitted with
The second inner guide roller, the third inner guide roller, the fifth inner guide roller, the sixth inner guide roller, the ninth inner guide roller, the tenth inner guide roller and the shift frame are integrated. a rail portion for sliding the shift portion in the conveying direction of the plate material; and
a laser unit having the laser nozzle disposed above the space between the first endless belt and the second endless belt;
with
The fifth inner guide roller is positioned between the first outer guide roller and the second outer guide roller in the front-rear direction,
The tenth inner guide roller is positioned between the third outer guide roller and the fourth outer guide roller in the front-rear direction,
the rail portion is arranged outside and below the first endless belt and the second endless belt to support the shift portion from below;
The laser blanking device according to claim 1, wherein the shift section slides along the rail section following the longitudinal slide of the laser nozzle. 2. A laser blanking device according to claim 1, wherein said shift frame has an inverted T shape when viewed from the side. The fourth inner guide roller drives the first endless belt, and the eighth inner guide roller drives the second endless belt,
3. The laser blanking device according to claim 1, wherein driving of said first endless belt and driving of said second endless belt are independent of each other. The second outer guide roller and the third outer guide roller are independently movable in the front-rear direction,
The movement of the second outer guide roller adjusts the tension of the first endless belt,
The laser blanking device according to any one of claims 1 to 3, wherein the tension of the second endless belt is adjusted by moving the third outer guide roller. further comprising a spatter receiving box disposed in the space and extending in the width direction;
The laser blanking device according to any one of claims 1 to 4, wherein the spatter receiving box is supported by the shift frame. The first outer guide roller, the second outer guide roller, the third outer guide roller, and the fourth outer guide roller are arranged linearly in the front-rear direction. of laser blanking equipment. The third inner guide roller, the fifth inner guide roller, the ninth inner guide roller, and the tenth inner guide roller are arranged linearly in the front-rear direction, according to any one of claims 1 to 6. Laser blanking device. The conveying units are arranged side by side in the width direction,
The laser section further includes an X-axis rail extending over the entire width of both transport sections, and a pair of Y-axis rails provided on both sides of the X-axis rail and extending in the front-rear direction,
The laser nozzle is slidable while being guided by the X-axis rail,
The laser blanking device according to any one of claims 1 to 7, wherein the X-axis rail is slidable while being guided by the Y-axis rail.

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