JPH09239572A - Patterning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device applying rapidly and surely beautiful finished- patterns onto a work. SOLUTION: This device possesses a nozzle body 1 providing a tip hole 8, wherein a condensing part of laser beams is passed through, and plural gas flow passages 10... are provided through the tip peripheral wall 9 of the nozzle body 1 forming the tip hole 8. Further, at a tip face 12 of the tip peripheral wall 9, a plurality of jetting part 13... of plural high speed gases are set up in equal divisions around circumference. The nozzle body 1 is constituted so as to jet the high speed gases selectively from the jetting parts 13 corresponding to a reverse rear part from an advancing direction 35 of laser beam machining.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a patterning device for applying characters, figures, symbols, patterns, etc. to a metal or non-metal work.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
A laser processing device that cuts or welds the work 49 with the gas 50 was used. In the case of cutting, the laser light 48 is emitted from the optical part 46 installed in the nozzle 47 to work.
The workpiece 49 was cut while melting the surface 49a and blowing away the melted portion by the gas 50 jetted so as to surround the laser beam 48.

[0003]

SUMMARY OF THE INVENTION However, work
When a laser processing device that cuts 49 was used for patterning (marking weakening the emission of laser light 48 and gas 50), the depth of the formed grooves was not uniform and the inner surface was uneven and melted. The molten part of the work 49 is gas
It was not blown away by 50 and rose up on both sides of the groove, causing burrs. Further, the processed part of the surface 49a may be discolored, and the finish of patterning (marking) was dirty.

Therefore, it is an object of the present invention to provide a patterning device for quickly and reliably applying beautifully finished characters, figures, symbols, patterns and the like. In addition, deformation (due to heat) that occurs during conventional processing and (due to machining)
Another purpose is to prevent breakage / scratch due to impact and other changes (deterioration) in mechanical properties of the material.

[0005]

In order to achieve the above-mentioned object, a patterning device according to the present invention has a nozzle body having a tip hole through which a laser focusing portion passes, and forms the tip hole. A plurality of gas flow passages are provided through the peripheral wall of the tip, and a plurality of high-speed gas jet parts are formed in the tip of the peripheral wall of the above-mentioned tip in a circumferentially even distribution. The nozzle body is configured so that high-speed gas is selectively ejected from the ejection portion corresponding to the section.

Further, a hollow nozzle body having a tip hole and a plurality of gas passages in a tip peripheral wall forming the tip hole, and a laser beam from an optical fiber which is incorporated in the nozzle body and is condensed. And an emission optical portion that emits from the tip hole to the outside, a pipe portion that communicates with each gas flow path in the tip peripheral wall, a solenoid valve provided in the pipe portion, and the other end of each pipe portion. A gas supply pipe that is connected to and connected to the gas supply unit and distributes the gas from the gas supply unit to each pipe unit is provided in the emission unit, and further, the tip end peripheral wall has a one-to-one correspondence with the gas flow path. A plurality of high-speed gas jetting portions that are communicated with each other are provided in a circumferentially even distribution, and a nozzle moving means for moving the nozzle body two-dimensionally or three-dimensionally is provided. From the high-speed gas ejection part corresponding to the rear part, It is provided with a solenoid valve control means for controlling the solenoid valve to eject a high velocity gas to 択的.

Further, the focal point of the laser beam and the spraying intersection of the high-speed gas coincide with each other, and the axis of the nozzle body is 20
The high-speed gas jetting portion is arranged so as to jet the high-speed gas at an angle of θ ≦ θ ≦ 60 °. Further, the control unit of the nozzle moving means and the solenoid valve control means are connected so that the movement of the nozzle body and the opening / closing of the solenoid valve are interlocked.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings showing the embodiments.

1A and 1B show an embodiment of a patterning apparatus according to the present invention. FIG. 1A is a front view and FIG. 1B is a plan view. This patterning device includes an emission part A provided with a nozzle body 1, a nozzle moving means E for moving the emission part A two-dimensionally or three-dimensionally, and an electromagnetic valve control means 7.
And The nozzle moving means E and the solenoid valve control means 7 will be described in detail later.

The emission part A is shown in FIG. 2 and FIG. 3, FIG. 2 is a front view of a half, and (a) of FIG. 3 is a plan view, (b).
Is a cross-sectional plan view of an essential part, and (c) is an enlarged bottom view of the essential part.

The emission part A is provided with a hollow nozzle body 1 having a tip hole 8 and a plurality of gas flow paths 10 in a tip peripheral wall 9 forming the tip hole 8, and is provided inside the nozzle body 1. An emission optical section 2 that collects laser light from an optical fiber and emits the laser light to the outside from the tip hole 8 of the nozzle body 1.
A pipe part 3 connected to each gas flow path 10 of the tip peripheral wall 9 and a solenoid valve 4 provided in each pipe part 3 ...
And a gas supply pipe 5 that is connected to the other end of each of the pipe parts 3 ... And distributes the gas from the gas supply part (not shown) to each of the pipe parts 3.

The nozzle body 1 has a tip peripheral wall 9 which penetrates the gas passages 10 ... Inside, a base having the same inner diameter as the tip peripheral wall 9 and connected to an upper edge of the tip peripheral wall 9. End wall 14 and the gas flow path 10 ...
It is covered by 16.

Further, the tip peripheral wall 9 of the nozzle body 1 is
A plurality of (eight in the illustrated example) a taper wall portion 9a having a diameter reduced toward the tip hole 8 and communicating with the tip end surface 12 of the taper wall portion 9a in a one-to-one correspondence with the gas flow passage 10. The high-speed gas jets 13 ... Are opened in a circle.

Then, the nozzle body 1 having the emission optical section 2 (having a mirror, a lens, etc.) incorporated therein is attached to a mounting plate 18 having an L-shaped cross-section above, and a tubular member 15 (having upper and lower outer flange portions). It is fixed by connecting bolts and nuts through. In addition, the upper end of the emitting optical unit 2 is connected to the tube member 17 fitted with the optical fiber cable 11 and the optical fiber cable.
11 or a mirror light guide mechanism is connected to the emission optical unit 2. Further, the emission optical section 2 uses a laser beam sent through an optical fiber, for example, a YAG laser or CO ₂
A laser or the like is condensed in the space portion 21 below the emission optical unit 2, and the laser condensing portion passes through the tip hole 8 of the nozzle body 1 (see FIG. 4).

Further, on the tip peripheral wall 9 of the nozzle body 1,
From the outer peripheral surface thereof, hole portions 19 ... Corresponding to the gas passages 10 ... Corresponding one-to-one are penetratingly provided, and the pipe portions 3 ... Communicate with the gas passages 10 ... Via the hole portions 19 ... It is connected. Further, solenoid valves 4 are provided in each of the piping portions 3 ... And fixed to the outer peripheral surface of the tip peripheral wall 9. The opening / closing of the solenoid valve 4 is controlled by solenoid valve control means 7 (described later).

The other end of each pipe portion 3 is connected to the T-shaped pipe joint portion 20 of the gas supply pipe 5 so that the gas from the gas supply portion (not shown) (mounting plate). It is pumped to the gas supply pipe 5 (which penetrates 18) and distributed to each pipe portion 3.

The emitting portion A as a whole is attached to the mounting plate 18
The outer periphery is surrounded by a protective plate 22 for preventing danger that is fixed to the.

Next, returning to FIG. 1, the nozzle moving means E for moving the nozzle body 1 of the emitting portion A two-dimensionally or three-dimensionally will be specifically described. The nozzle moving means E includes a column portion 23 and a motor 25a as shown in FIGS.
And a second moving part 26 having a motor 26a and reciprocating back and forth,
A third moving unit that has a motor 27a and reciprocates left and right
27 and.

The first moving portion 25 is an outer surface 24 on the upper portion of the column portion 23.
A wheel portion (for example, a pinion member) (not shown) that is rotationally moved by a motor 25a is provided on a first rail member 29 (for example, a rack member) that is attached in the longitudinal direction to the vertical portion along the column portion 23. It can reciprocate.

Further, the outer surface 28 of the first moving portion 25 has a shelf portion 30.
Further, a horizontal portion 32 having a second rail member 31 is fixed to the upper surface of the shelf portion 30. The second moving portion 26 is reciprocally movable back and forth on the second rail member 31 by the rotational driving force of the motor 26a.

The second moving portion 26 is provided with a third rail member 33 for the third moving portion 27, and the third moving portion 27 can be reciprocated left and right by the rotational driving force of the motor 27a. ing. The emitting portion A is connected to the third moving portion 27 via the mounting plate 18.

The nozzle moving means E described above includes the first,
Control unit 6 for controlling the movement of the second and third moving units 25, 26, 27
Is provided and is connected to each motor 25a, 26a, 27a. That is, each motor is controlled by the control unit 6.
The rotation of 25a, 26a, and 27a is controlled, and the first, second, and third
The moving parts 25, 26, 27 move simultaneously, and the nozzle body 1 of the emitting part A moves two-dimensionally or three-dimensionally.

As shown in FIGS. 1 and 3 (a), the patterning device of the present invention is provided with electromagnetic valve control means 7 for controlling to open / close each electromagnetic valve 4 ... are doing. Further, the control section 6 of the nozzle moving means E and the solenoid valve control means 7 are arranged so that the movement of the nozzle body 1 and the solenoid valve 4 ...
It is connected so that the opening and closing of can be linked.

Specifically, the laser processing direction--
The solenoid valve control means 7 controls the solenoid valve 4 so that the high-speed gas G is jetted by selecting one or two high-speed gas jetting parts 13 corresponding to the rear part opposite to the traveling direction of the nozzle body 1. ... is opened. Therefore, the control unit 6 controls the movement of the nozzle body 1 and simultaneously the movement of the nozzle body 1 and the solenoid valve 4
An electric signal is transmitted to the solenoid valve control means 7 so as to be linked with the opening and closing of the solenoid valve, and the solenoid valve control means 7 selects the solenoid valve 4 ...

Here, for holding the work to be patterned (marking) at a predetermined position, for example, a work fixing device B as shown in the drawing (phantom line in FIG. 1) may be used. The work fixing device B will be briefly described. The work fixing device B includes an arm 41 that swings up and down and a conveyor 43. A pipe-shaped work 40 is placed on a roller 44 of the conveyor 43, and the arm 41 is shaken. The work 40 is moved and pressed by the pressing portion 42 (provided at the tip of the arm 41) to fix the work 40 in a sandwiched manner.

Since the outer peripheral surface of the roller 44 is valley-shaped, the work 40 can be fixed without being laterally displaced, and the arm 41 swings up and down, so that it can be used for large and small works 40. Then, in order to move the work 40 in the longitudinal direction along the conveyor 43, for example, a rotating wheel or a rotating belt for feeding the work is provided at the contact portion of the pressing portion 42 with the work 40. In this case, it is desirable to interlock so that the work 40 is fed by a predetermined amount when the work 40 is marked with a predetermined number of characters. If the work is strip-shaped, the roller may be rod-shaped (parallel to the axis). In the present invention, the work 40 can be applied to non-metals such as stones and tiles in addition to metal.

As shown in FIG. 4, the nozzle body 1 is sprayed with the focus P of the laser light S emitted from the emission optical section 2 provided therein and the high-speed gas G ejected from the ejection section 13. It is designed to match the intersection. Further, the high-speed gas ejection portion 13 is arranged so as to eject the high-speed gas G at an angle of 20 ° ≦ θ ≦ 60 ° with respect to the axis O of the nozzle body 1.

Therefore, as shown in FIG. 5, at the time of laser processing, the high-speed gas G is ejected from the ejection portion 13 at the rear portion opposite to the advancing direction 35 of the nozzle body 1, but at this time, the focus of the laser light S is focused. The surface 40a of the work 40 is melted by P, and the high-speed gas G is injected at a gas velocity of 100 to 500 m / s so as to aim at the melted part and blows off the melted part. The groove 34 can be formed in the surface 40a. If the gas velocity is less than 100 m / s, the molten portion cannot be blown off sufficiently,
If it is greater than 00 m / s, the site environment will deteriorate.

The high-speed gas jetting section 13 is provided in the nozzle body 1
Since it is formed with an angle of 20 ° ≦ θ ≦ 60 ° with respect to the axis O of, the work 40
The jetted portion 13 has an acute angle with respect to the surface 40a, and a deep groove 34 can be formed. When θ is large (50 to 60 °), burrs--the swelling of the work-melting portion--reduces and The inner surface of the groove 34 is smooth and has a beautiful finish.
However, if θ is smaller than 20 °, the molten portion is less likely to be skipped, so that burrs are often generated. Also,
When θ becomes larger than 60 °, the high-speed gas G collides with the opposite (tip peripheral wall 9) front end surface 12 to generate turbulent flow, and the melted portion cannot be reliably blown off, and the groove is too shallow. Will end up.

As the gas G, air, N ₂ gas,
O ₂ gas, H ₂ gas, etc. are used. When O ₂ gas (or H ₂ gas) is used, deep groove (recess) processing is possible, and with N ₂ gas, groove (recess) processing depth is used. Although it becomes shallower, the processed surface has a very clean finish, and air is practical because it provides an intermediate effect between O ₂ gas and N ₂ gas.

Therefore, FIG. 6 shows the jetting direction of the high-speed gas G at the time of laser processing, and as shown in the figure, corresponds to the rear part opposite to the laser processing advancing direction 35 (the advancing direction of the nozzle body 1). The high-speed gas G is ejected from the high-speed gas ejection unit 13 (see FIG. 3). At this time, (a) and (b) of FIG. 6 show the straight groove processing, in which case the high-speed gas G is discharged from one ejection portion 13.
Is squirted. In the figures (c) to (d), curved groove machining is performed, but in this case, since the advancing direction 35 of the nozzle continuously changes, the advancing operation is performed while the solenoid valve 4 is instantaneously switched. The high-speed gas G is ejected from the (one or two) ejection parts 13 so as to follow the direction 35.

FIG. 7 shows another embodiment, in which the emitting portion A is attached to the tip of the arm 45 of the robot R. In this way, laser processing can be performed on the work 40 conveyed by the work fixing device B (described in FIG. 1), and the work 40 having a large size and shape that cannot be placed on the conveyor (as shown in the figure). Can also be accommodated. Note that, similarly to the above, the control unit 6 and the solenoid valve control means 7 are provided, and the movement of the nozzle body 1 and the switching of the solenoid valve 4 are interlocked.

Further, the present invention is not limited to the above-described embodiment, and for example, the number of high-speed gas jetting parts 13 (and the corresponding gas flow paths 10 and solenoid valves 4) can be freely increased or decreased. The larger the number, the more complicated characters, symbols, figures and various patterns can be patterned, resulting in a more precise finish.

[0034]

Since the present invention is configured as described above, the following effects can be obtained.

(According to the patterning device according to the first or second aspect), since the laser processing advancing direction 35 and the jetting direction of the high-speed gas G coincide with each other, the melted portions of the work 40 by the laser light S are on both sides of the groove 34. It is blown away without depositing (suppresses the generation of burrs). Therefore, the work 40 surface 40
The finish of the characters, figures, symbols, patterns, etc. formed on a will be beautiful. Further, it is possible to prevent a thermal deformation and a change in mechanical properties of the work, and to efficiently and efficiently draw a high quality pattern.

(By the patterning device according to the second or fourth aspect of the invention) By providing the electromagnetic valves 4 in each of the pipe portions 3 connected to the high-speed gas jetting portions 13 in order, the laser processing direction 35 can be changed. Even if it changes, the high-speed gas G in the direction that follows it can be jetted automatically and instantly. In addition, since the emission part A is comparatively lightweight and compact, the nozzle moving means E enables quick movement (about 1 s per character), which allows concave formation (formation) of characters, figures, symbols, patterns, etc. It can be done quickly (efficiently).

Since the emitting part A is lightweight and compact (according to the patterning device according to claim 2), the robot R
It can be used by simply attaching (removing) it to the arm 41 or the like. Therefore, the existing nozzle moving means can be used.

(According to the patterning device of the third aspect), the surface 40a of the work 40 is melted at the focal point P of the laser light S, and the high-speed gas G is jetted so as to aim at the melted part and blows off the melted part. Therefore, it is possible to surely and effectively form the groove 34 on the surface 40a of the work 40. Moreover, since the high-speed gas jetting portion 13 is formed at an angle of 20 ° ≦ θ ≦ 60 ° with respect to the axis O of the nozzle body 1,
If θ is small (20 to 30 °), a clean and deep groove 34 can be formed, and if θ is large (50 to 60 °), burr-
──The swelling of the melted part of the work ─── decreases, and the inner surface of the groove 34 becomes smooth, resulting in a more beautiful finish. Further, when θ is set to about 45 °, this intermediate finished groove 34 can be formed. Further, by adjusting the gas velocity of the gas G, the groove depth can be finely adjusted.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of a patterning device of the present invention.

FIG. 2 is a front view of a jetting part in a half-section.

FIG. 3 is an explanatory diagram of a configuration of an injection unit.

FIG. 4 is a sectional front view of a main part.

FIG. 5 is a cross-sectional front view of essential parts showing a laser processing state.

FIG. 6 is an explanatory plan view showing a laser processing state.

FIG. 7 is a perspective view showing another embodiment.

FIG. 8 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 1 Nozzle body 2 Ejection optical section 3 Piping section 4 Solenoid valve 5 Gas supply tube 6 Control section 7 Solenoid valve control means 8 Tip hole 9 Tip peripheral wall 10 Gas flow path 12 Tip surface 13 High-speed gas ejection section 35 Advancing direction A Ejection section E Nozzle moving means G High-speed gas O Axial center P Focus S Laser light

Claims (4)

[Claims] 1. A nozzle body 1 having a tip hole 8 through which a laser converging part passes, and a plurality of gas passages 10 are provided through a tip peripheral wall 9 forming the tip hole 8. , A plurality of high-speed gas jetting portions 13 are provided on the most distal end surface 12 of the tip peripheral wall 9 in a circumferentially even distribution, and from the jetting portion 13 corresponding to the rear portion opposite to the laser processing advancing direction 35, A patterning device, wherein the nozzle body 1 is configured to selectively eject a high-speed gas G. 2. A hollow nozzle body (1) having a tip hole (8) and a plurality of gas passages (10) in a tip peripheral wall (9) forming the tip hole (8), and an optical fiber installed inside the nozzle body (1). Of the laser light S of the above and collects and emits the laser light S from the tip hole 8 to the outside, and a pipe portion 3 that communicates with each gas flow passage 10 in the tip peripheral wall 9 and the pipe. The electromagnetic valves 4 provided in the parts 3 ... and the gas supply pipe 5 that is connected to the other end of each of the pipe parts 3 ... and that distributes the gas from the gas supply part to each of the pipe parts 3. In addition, in preparation for A, a plurality of high-speed gas ejection parts 13 ... Which communicate with the gas flow channel 10 in a one-to-one correspondence with each other are provided on the most distal end surface 12 of the tip peripheral wall 9 in a circumferentially even distribution. , A nozzle moving means E for moving the nozzle body 1 two-dimensionally or three-dimensionally, and further comprising a laser From the high speed gas blowout part 13 corresponding to the rear portion opposite to the factory traveling direction 35, selectively high velocity gas G
Solenoid valve control means 7 for controlling the solenoid valve 4 so as to eject
A patterning device comprising: 3. The high-speed gas G is jetted at an angle of 20 ° ≦ θ ≦ 60 ° with respect to the axis O of the nozzle body 1 while the focal point P of the laser beam S and the spray intersection of the high-speed gas G coincide with each other. The high-speed gas jetting section 13 is arranged so as to
Or the patterning device according to 2. 4. The patterning device according to claim 2, wherein the control unit 6 of the nozzle moving means E and the solenoid valve control means 7 are connected so that the movement of the nozzle body 1 and the opening / closing of the solenoid valve 4 are interlocked.