JPS60206595A - Laser beam processing device - Google Patents

Abstract

PURPOSE:To increase the speed of processing and to reduce noise, etc. by traveling a laser light device in parallel with a material to be machined, oscillating said device and executing scanning of laser light while controlling the same in accordance with a prescribed machining pattern. CONSTITUTION:A control device 200 for processing is constituted of a pretreating device for pattern making, marking, etc. and a post treating device which performs indirect processing. A fabric 100 is delivered from a spreader 104 via rolls 106 according to the data inputted from the device 200. The laser light RB which is oscillated from a laser oscillator 128 and arrives at a condenser 112 via a beam expanding means 134 irradiates the fabric 100. The condenser 112 oscillates and a cursor 114 travels back and forth on a horizontal part 110A of a frame. The laser light RB scans the fabric 100 according to the pattern and marking determined by the device 200 thereby cutting the fabric. The processing is executed at a high speed with low noise by the above-mentioned method.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a laser processing device.
By scanning the 1tv laser beam, the object'
For example, it relates to laser processing equipment for processing fabrics, leather, etc.

[Prior art]

FIG. 1 shows an example of a conventional laser processing apparatus. In this figure, on the left side of the cutting conveyor 10 is a spreading device 1 in which a roll 12 of rolled fabric is set.
4 is placed. Further, on the right side of the cutting conveyor 10, a scrap processing device 16 is arranged to accommodate and process the scraps after cutting. Fabric to be processed 18
The scraps are fed from the spreading device 14 onto the cutting conveyor 10 as shown by the arrow F1 in the figure, and the scraps are stored in the scrap processing device 16 as shown by the arrow F2. A driving mechanism 22 for scanning the laser head 20 is arranged approximately in the center of the cutting conveyor 10 . This drive mechanism 22 includes a first drive body 24 and a second drive body 26.

A pair of first drive bodies 24 are provided on both sides of the cutting conveyor 10, and a second drive body 26 is installed movably in the direction of the hot book mark F3 relative to the first drive bodies 24. Na na introduction, part 2
The driving body 26 is driven in the direction of the first sign 3 by the first driving body 24. Direction of this arrow F3 4 Lawn area 180
The coordinate axis XK coincides with that assumed on the surface: "1'? The carriage 28 is attached to the second driving body 26'-
i, p p , this carriage 28 is connected to the second driving body 2
6 in the direction of arrow F4 in the figure. The direction of this arrow F4 corresponds to the coordinate axis Y assumed on the surface of the fabric 18. A laser head 20 is fixed to the carriage 28. That is, the laser head 20 is scanned in the direction of the coordinate axis X by the first driver 24, and scanned in the direction of the coordinate axis Y by the second driver 26.

Furthermore, a laser oscillator 30 is installed near the cutting conveyor 10.
is arranged, and an optical means 32 consisting of a prism or a mirror is arranged on the second driving body 26 mentioned above. Further, the laser oscillator 30 is provided with a light guiding means 34 . The laser light emitted from the light guiding means 34 passes through the optical path L1 and is severely damaged by the optical means 32, and after the optical path is changed here, it passes through the optical path L2 and reaches the laser head 20.
reach. The direction of the optical path L1 corresponds to one direction in which the optical means 32 moves, that is, the direction in which the second driving body 26 moves as indicated by the arrow F3. i, 7J] of the optical path L2 is the moving direction of the laser head 20, that is, the direction of movement of the laser head 20, i.e. This corresponds to the moving direction of arrow F4 of page 28. Therefore, no matter how the 1.1ψ head 20 moves, the laser oscillator 30
The laser light output from the 1ν pad 20
can be reached.

-1 Next, to explain the operation of the above conventional example, mj
41s is transported along with the operation of the cutting conveyor 10,
It passes through the laser head 20 part. laser head 20
is scanned and moved by the driver mechanism 22, and along with this, the laser beam is scanned while drawing a fixed pattern on the fabric 18.

However, in the conventional laser processing apparatus as described above, the size of the drive mechanism 22 is large in proportion to the size of the pattern to be cut, and a sufficient space is required for its arrangement. Therefore, the length of the laser processing device, especially the cutting conveyor 10, becomes long. Furthermore, the noise or vibration associated with the operation of the drive machine f422 must also be quite large.

Furthermore, since the movement range of the laser head 20 matches the cutting pattern, there is also the disadvantage that it is difficult to perform cutting at high speed.

[Summary of the invention]

The present invention has been made in view of the above, and an object of the present invention is to provide a laser processing device that can perform high-speed processing and reduce noise and vibration. A condensing device that irradiates laser beams is moved along a straight line parallel to the workpiece, and is swung along an axis 7c parallel to the traveling direction to scan the laser beam. i 1 threat/7-100T, (bu-so f
(To the left)! The purpose is to achieve the above object by using a laser processing device with l+4'FF.

[Embodiments of the invention]

Hereinafter, the laser processing apparatus according to the present invention will be explained in detail based on the embodiments shown in FIGS. 2 to 5.

FIG. 2 shows an embodiment of a laser processing apparatus according to the present invention, and FIG. 3 shows a schematic configuration of the apparatus as viewed from the front. In FIGS. 2 and 3, a spreading device 104 for the dough 100 is disposed to the left of a slat conveyor 102, which is a support base on which the dough 100 to be processed is supported. This spreading device 104 includes:
A raw fabric roll 106 on which the fabric 100 is wound is set, and the fabric 100 wound on this raw fabric roll 106 is set.
is fed onto a slat conveyor 102 by a spreading device 104. Slat conveyor 1
A scrap processing device 108 is disposed on the right side of 02, and the remaining scraps after the processing is completed are stored therein.

A substantially U-shaped frame 110 is arranged at an appropriate position near the center of the east slide conveyor 102.
A laser beam is focused on the horizontal part 110A of 0 and the raw rice 109 is
Curso wide, 1' with a light condensing device 112 attached to illuminate the area.
14 are arranged. This cursor 114 can be moved in any direction on the horizontal portion 110A of the frame 110 by the drive #1 device. The pick and light condensing device 112 can run in any direction along the horizontal plane 5110A. In addition, the horizontal part 110A is the fabric 1
00 and perpendicular to the feeding direction of the fabric 100.

Further, the driving device may be provided on the cursor 114 or on the frame 110 side.

A laser oscillator 128 is arranged near the slat conveyor 102 or the spreading device 104, and an optical means 130 such as a prism mirror is arranged and fixed on one shoulder 110B of the frame 110.

A transmission body 132 made of an optical fiber or the like is provided between the laser oscillator 128 and the optical means 130, and the laser beam whose direction is changed by the optical means 130 is expanded in beam diameter by the beam expanding means 134 and then sent into the air. is transmitted and incident on the light condensing device 112. That is, the transmission body 132, the optical means 130, and the space formed by the horizontal portion 110Aρ of the frame 110 constitute a laser beam transmission path 4t.

FIG. 4 is an explanatory diagram showing the configuration of the condensing device and the beam expanding means.
1. Beam expansion device fff134j consisting of concave mirror A122. After the beam diameter is expanded from yI to 02, it enters the condensing device 112.The condensing device 112 is a mirror 12 that reflects the laser beam whose beam diameter has been expanded.
4 and a concave mirror B126 that condenses the beam and focuses it on the fabric 100. The light condensing device 112 swings in the direction of the arrow FX around the tab θ, around the center θ of an axis PX arranged parallel to the running direction of the cursor 114 and the running direction of the tab itself. It looks like this.

The beam expanding means 134 and the condensing device 112 are arranged so that the center θ of the swing axis PX and the optical axis θ of the laser beam having the beam diameter 5i11'2 coincide with each other. Note that a drive device for the swing axis PX is provided at the cursor 114. Also,
θ is the optical axis of the laser beam having a beam diameter y11, and Y is an arrow indicating the traveling direction of the condensing device 112.

With the above configuration, the laser beam RB is focused on the fabric 100 by the convex mirror 120, concave mirror A 122, mirror 124, and concave mirror B 126, and is assumed to stop at the fabric 100 by swinging the axis PX. Translated in the coordinate axis X direction, Kerno □, 4.11
4, the cloth 100 is scanned in the assumed sitting axis Y direction.

Note that the beam expanding means consisting of the convex mirror 120 and the concave mirror A122 is used to generate the laser beam RB0 on the fabric 100.
This is to narrow down the pot diameter d. Sunawa) 6,
The spot diameter d is the focal length of the concave mirror B126.
For the beam diameter D of the laser light incident on the single mirror B126 and the constant k, d=′ is expressed as follows. Therefore, even when the focal length F is set to a large value, if the spot diameter d is to be kept constant, the beam diameter must also be increased in proportion to F. In the present invention, by increasing the focal length t of the concave mirror 126 and increasing the distance between the condensing device 112 and the fabric 100, the degree of swing of the condensing device 112 can be reduced. It is preferable to include such beam expanding means.

Next, a portion of the slat conveyor 102 is curved into an arc shape, thereby forming a processed curved portion 102A. Is this processed curved portion 102A a light concentrator? 1
It is configured to be a part of the circumference of a radius R with the rotation axis center θ of the swing axis PX of the 7112 as the center point. (See Fig. 3) Therefore, even when the laser beam R1 is scanned in the direction of the coordinate axis X by swinging around the center θ of the swing axis PX of the condenser 112f, the a-plane mirror B126 and the fabric are 100
Since the optical distance between the lens and the lens does not change, there is no risk of defocusing. The slat tray 102 is constituted by a honeycomb panel, which is a beehive-shaped "j-a" or panel in which deep hexagonal openings are formed, made of a thin plate material such as aluminum.

Smoke emitted when the fabric 100 is cut by the laser beam is sucked in the direction of the arrow shown in FIG. 3 by the smoke evacuation device 150. The partition 151 constitutes a part of the smoke evacuation device 150. The suction of smoke by the smoke evacuation device 150 brings the fabric 100 into close contact with the slat conveyor 102, which also has the effect of allowing accurate cutting. Note that the illustration of the smoke evacuation device 150 is omitted in FIG. 2.

Next, as shown in FIG.
On the side of the scrap processing device 108, there is a
- A processing control device 200 is arranged, an example of its configuration is shown in FIG.

In FIG. 5, the processing control device 200 is composed of a processing device EOO at the front stage that performs production management, pattern making, grading, or marking processing, and a processing device ←J400 at the rear stage that performs other direct processing processing. ing. The processing device 300 is connected to a data input means 202 such as a paper tape.

The film processing equipment 300 consists of a production control department 302, a pattern punching and grading department (hereinafter simply referred to as "20 parts"). The PG unit 304 has the function of commanding processing based on data necessary for production control such as price and type.The PG unit 304 performs pattern making and grading work in a clear and specific manner based on data input from the production control 5302. Calculate data related to patterns.Pattern making is the creation of specific patterns for processing, and grading is the creation of variations of patterns according to each size from a standard pattern.This PG section The data of 304 is input to the marking section 306.The marking section 306 performs a process of arranging the patterns on the fabric 100 with a good yield based on the input data.The data of this marking section 306 is , is input to the subsequent processing device 400. In the processing device 1Ji 400, laser light scanning is performed based on the data input from the marking section 306, and the cutting process of the fabric 100 is performed.

In winter, we will explain the latter processing equipment R400.

The grain processing device 400 is structured around a cutting control section 402.
*: The cutting control unit 402 is connected to the oscillator operation panel 1*41, the head drive operation panel 406, and the servo controller 408, respectively. Also,
The cutting control r4o2 is also connected to the spreading device 104, the scrap processing device 108, and the conveyor drive device 410, respectively. Of these, the oscillator operation panel 404 is connected to the laser oscillator 128, thereby controlling the laser oscillation operation of the laser oscillator 128. The oscillator operation panel 404 is operated not only by commands from the cutting control unit 402 but also by manual operations by an operator.

The head drive operation panel 406 is connected to the head drive unit 412. This head drive device 412 includes a swing means drive section 113 and a cursor drive section 115. This head drive operation panel 406 is also connected to the cutting control section 402.
In addition to commands from the system, it can also be operated by an operator's manual.

The servo controller 408 is connected to the head drive unit 12. That is, the head drive section <12', the head drive operation m406, and the servo controller conveyor drive device 410 are for driving the slat conveyor 102-. This conveyor drive device h+4
10, Spread wrapping & 104 and scrap processing equipment/i0
8 operates in a certain manner based on the commands from the cutting control unit 402, and the fabric 100 is cut into strips and llets according to the degree of processing.
It is designed to be delivered onto a y-t conveyor 102.

Next, the overall operation of the above embodiment will be explained.

First, based on the data inputted from the processing device N 300, the cutting control section 402 operates the fabric spreading device &104 and the conveyor drive device 410, thereby sending the fabric 100 from the original fabric roll 106 onto the slat conveyor 102. It will be shown.

On the other hand, the cutting control unit 402 outputs an operation command to the oscillator operation panel 404, the laser oscillator 128 starts emitting one light, and the laser beam is transmitted through the transmitting body 132, The light condensing device 112 is reached, and the fabric 10
The beam is irradiated so that it is focused on 0.

At this time 1. From the cutting control unit 402 to the head drive operation panel 4
06 and the servo controller 408, and the bed driving device 412 is driven.

, the light condensing device 6 is moved by the swinging means driving section 113.
Blkz swings around the axis PX, and the cursor 114 moves back and forth by the cursor drive unit 115,
) 4:, , the pattern and mark requested by the device 300, :41'',';;,' laser beam RB according to the
is scanned on the fabric 100 and stiffened by 1.・(See Figure 2)
.

The fabric 100 is cut by the above operations, and the fabric 100 is sent toward the scrap processing device 108 by the slat conveyor 102. At this time, the cutting control unit 402
The scrap processing device 108 is driven based on the operation command. The cut fabrics 100A and 100B are transferred to the slat conveyor 10 by an operator or other automatic machine.
The scrap V is collected from above 2 and stored in the scrap processing device 108.

It should be noted that the object to be processed may be fabric, leather, etc., as well as metal, plastic, etc., but it goes without saying that in the above embodiments, flammable objects are preferable. If the conveyor does not have such properties, the slat conveyor 102 will be constructed flat as shown in FIG. Furthermore, when the workpiece has a relatively small area, it is placed directly on the slat conveyor 102.

〔Effect of the invention〕

As explained above, in the laser processing radical according to the present invention, the condensing device that irradiates the workpiece with a laser beam is run submerged in a straight line parallel to the workpiece, and parallel to the traveling direction. By rotating the rotating shaft, the scanning operation of the laser beam is performed while opening the opening side 1 based on the processing pattern, so that processing can be performed at high speed. This has the effect of reducing noise or vibration. to

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing 10ll of a conventional laser processing device, FIG. 2 is a perspective view showing an embodiment of the laser processing device according to the present invention, and FIG. 3 is the device shown in FIG. 2. FIG. 4 is an explanatory view showing the configuration of a condensing device and beam expanding means, and FIG. 5 is a block diagram of a processing control device in an embodiment of the present invention. In the figure, 100 is the fabric, 102 is the slat conveyor, 11
2 is a condenser, 114 is a cursor, and 120 is a convex surface? look,
122 is a concave mirror A, 124 is a mirror, 126 is a concave mirror B
112B is a laser oscillator, 130 is an optical means, 132 is a transmission body, 134 is a beam expanding means, 102A is a curved h
μ, 200 is a processing control device g, px is a swing axis, Y is a running direction of the cursor 114, and RB is a laser beam. In addition, the same reference numerals in the figures refer to the same or equivalent parts. Applicant Hirobe Kawada, Director of the Agency of Industrial Science and Technology

Claims (1)

[Claims] ``(η) In a laser processing device that processes a workpiece by scanning and irradiating a workpiece supported on a support stand two-dimensionally with focused light, The device includes a condensing device that condenses and irradiates the workpiece with laser light transmitted from a laser light source via a transmission path, and a drive that makes the condensing device travel along a straight line parallel to the workpiece. a device, and a swinging means for swinging the light condensing device around an axis parallel to the traveling direction, the center of the swing axis being aligned with the optical axis of the laser beam incident on the light condensing device; A laser processing apparatus comprising: a control means for controlling the driving device and the swinging means so that the laser beam draws a predetermined pattern on the workpiece. , the laser processing device according to claim 1, which is a transmission line including beam expanding means for expanding the diameter of the laser beam. (3) The support base is a dowel that forms an arc with respect to the center of the swing axis. 1 ml tube processing device according to claim 1 or 2, which is a support base including a curved portion.