JPH0112593B2 - - Google Patents
Info
- Publication number
- JPH0112593B2 JPH0112593B2 JP55159339A JP15933980A JPH0112593B2 JP H0112593 B2 JPH0112593 B2 JP H0112593B2 JP 55159339 A JP55159339 A JP 55159339A JP 15933980 A JP15933980 A JP 15933980A JP H0112593 B2 JPH0112593 B2 JP H0112593B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- laminated corrugated
- gas
- laser
- laser beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007789 gas Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 8
- 238000003698 laser cutting Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 239000011229 interlayer Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 7
- 229910052755 nonmetal Inorganic materials 0.000 description 5
- 230000002250 progressing effect Effects 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000010000 carbonizing Methods 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/1462—Nozzles; Features related to nozzles
- B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
- B23K26/147—Features outside the nozzle for feeding the fluid stream towards the workpiece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/1462—Nozzles; Features related to nozzles
- B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
- B23K26/1476—Features inside the nozzle for feeding the fluid stream through the nozzle
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Description
【発明の詳細な説明】
この発明は、非金属よりなる積層波板のレーザ
ービームによる切断方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cutting a laminated corrugated plate made of non-metal with a laser beam.
従来、非金属積層波板のレーザー切断は、第１
図に示すように一般の中実材料の切断と同様の切
断用加工ヘツドで行なわれていた。第１図におい
て、１は加工ヘツド、２はレーザー発振装置から
導かれたレーザービーム、３はレーザービームを
集束する集光レンズ、４はその集束点である。ま
た、５は切断用ノズル、６は加工ヘツドに設けら
れたガス流入口、７はレーザービームと同軸状に
噴出するアシストガス、８は非金属積層波板であ
る。 Conventionally, laser cutting of non-metallic laminated corrugated plates was performed in the first
As shown in the figure, cutting was carried out using the same cutting head as that used for cutting ordinary solid materials. In FIG. 1, 1 is a processing head, 2 is a laser beam guided from a laser oscillation device, 3 is a condensing lens that focuses the laser beam, and 4 is its focusing point. Further, 5 is a cutting nozzle, 6 is a gas inlet provided in the processing head, 7 is an assist gas ejected coaxially with the laser beam, and 8 is a non-metal laminated corrugated plate.
次に動作および方法について説明する。レーザ
ー発振装置から加工ヘツド１に導かれたレーザー
ビーム２は集光レンズ３を通して集束点４に高エ
ネルギー密度熱源として収束された切断用熱源と
して利用される。また、ガス流入口６から流入し
た不燃性ガスは切断用ノズル５から切断進行部の
蒸発物を除去するとともに、切断面を変質から保
護するためのアシストガス７としてレーザービー
ム２と同軸状に噴出される。また、非金属積層波
板８はレーザービーム２の照射面より少し内部に
ビーム集束点４が位置するように配置され、レー
ザービーム２の照射と同時に移動されて切断が達
成される。 Next, the operation and method will be explained. A laser beam 2 guided from a laser oscillator to a processing head 1 passes through a condensing lens 3 and is focused at a convergence point 4 as a high energy density heat source for use as a cutting heat source. In addition, the nonflammable gas flowing in from the gas inlet 6 is ejected from the cutting nozzle 5 coaxially with the laser beam 2 as an assist gas 7 to remove evaporated matter from the cutting progress area and to protect the cut surface from deterioration. be done. Further, the nonmetal laminated corrugated plate 8 is arranged so that the beam focusing point 4 is located slightly inside the irradiation surface of the laser beam 2, and is moved simultaneously with the irradiation of the laser beam 2 to achieve cutting.
従来の切断方法の場合、切断溝上部では、レー
ザービーム２と同軸状に切断用ノズル５より噴出
されるアシストガス７の効果と、集束点４近傍の
よく集束した細径高エネルギー密度熱源により切
断面の炭化しない良好な品質となつている。しか
し切断溝下部では、アシストガス７がストレート
タイプの切断用ノズル５から噴出されるためガス
流量、流速が制限され、シールド効果がほとんど
期待できない。また、レーザービーム２は被切断
材料の非金属積層波板８の裏面に近づくほど第１
図に示すようにビーム径が拡がり、ビームのエネ
ルギー密度の低下が著しい。この両者に起因して
切断溝下部では、切断面に著しい炭化がおこり、
良好な切断品質を得ることはできなかつた。さら
に、被切断材料が非金属積層波板８のため、内部
に空間が多く、ノズル５から噴出されるガスが側
方へ逃散したり、積層波板の空間部の残留酸素に
より、切断面の炭化を防ぐことができなかつた。 In the case of the conventional cutting method, the upper part of the cutting groove is cut by the effect of the assist gas 7 ejected from the cutting nozzle 5 coaxially with the laser beam 2 and by the well-focused small diameter high energy density heat source near the focusing point 4. The surface is of good quality with no carbonization. However, at the lower part of the cutting groove, the assist gas 7 is ejected from the straight type cutting nozzle 5, so the gas flow rate and flow velocity are limited, and almost no shielding effect can be expected. Further, the laser beam 2 becomes first as it approaches the back surface of the non-metal laminated corrugated plate 8 of the material to be cut.
As shown in the figure, the beam diameter expands and the beam energy density decreases significantly. Due to both of these factors, significant carbonization occurs on the cut surface at the bottom of the cutting groove.
It was not possible to obtain good cutting quality. Furthermore, since the material to be cut is the non-metallic laminated corrugated sheet 8, there is a lot of space inside, and the gas ejected from the nozzle 5 may escape to the side, and the cut surface may be damaged due to residual oxygen in the space of the laminated corrugated sheet. Carbonization could not be prevented.
この発明は、このような欠点を改善し、切断面
の炭化しない良好な切断品質を得るため、切断進
行部全体にシールドガスを充分供給し、特に積層
波板の層間の空間部にシールドガスを供給するこ
とにより切断面の炭化しない非金属積層波板のレ
ーザービームによる切断方法を提供することを目
的としている。 In order to improve these drawbacks and obtain good cutting quality without carbonizing the cut surface, the present invention supplies a sufficient amount of shielding gas to the entire cutting section, and in particular to the space between the layers of the laminated corrugated plate. The object of the present invention is to provide a method for cutting a non-metallic laminated corrugated plate using a laser beam so that the cut surface does not become carbonized.
以下、この発明の一実施例を積層段ボール紙の
レーザー切断の場合について説明する。 An embodiment of the present invention will be described below with reference to laser cutting of laminated corrugated paperboard.
第２図はこの発明の一実施例を示す断面図であ
る。第２図において、９は凸レンズ、１０は凹レ
ンズでこの組合せによりビームコンデンサとして
作用する。３は長焦点集光レンズ、レーザービー
ム２は９−１０−３を通り集束点４に集束する。
５は切断用ダイバーゼントノズルでビームと同軸
状にアシストガス７を切断部に供給する。１２は
被切断材料側面全体より均一にアルゴンガス、窒
素ガスなどの不燃性ガス７ａを供給するためのシ
ールドガス供給用チヤンバ、１３はチヤンバに設
けられたガス流入口、１４はレーザービーム照射
面の裏面より切断進行部にシールドガス７ａを供
給する裏面シールドガス供給用ノズルである。ま
た、第３図は側面シールドガス供給用チヤンバを
取り付けた場合の装置の外観を示している。第４
図ａは切断用ダイバーゼントノズルの断面形状を
示したもので、１５はダイバーゼントタイプのア
シストガス噴出口である。第４図ｂは前記ダイバ
ーゼントノズルの平面図である。 FIG. 2 is a sectional view showing an embodiment of the present invention. In FIG. 2, 9 is a convex lens, 10 is a concave lens, and this combination acts as a beam condenser. 3 is a long focusing lens, and the laser beam 2 passes through 9-10-3 and is focused on a focusing point 4.
Reference numeral 5 denotes a divergent nozzle for cutting, which supplies assist gas 7 to the cutting section coaxially with the beam. 12 is a shield gas supply chamber for uniformly supplying nonflammable gas 7a such as argon gas or nitrogen gas from the entire side surface of the material to be cut; 13 is a gas inlet provided in the chamber; This is a backside shielding gas supply nozzle that supplies shielding gas 7a from the backside to the cutting progressing section. Moreover, FIG. 3 shows the external appearance of the apparatus when a side shield gas supply chamber is attached. Fourth
Figure a shows the cross-sectional shape of a divergent nozzle for cutting, and 15 is a divergent type assist gas ejection port. FIG. 4b is a plan view of the divergent nozzle.
次に動作について説明する。レーザー発振装置
より加工ヘツド１に導かれたレーザービーム２は
凸レンズ９と凹レンズ１０から成るビームコンデ
ンサを通り、レーザー発振装置より放出されたレ
ーザービーム２の径よりも細径化された平行ビー
ム１１となり、長焦点集光レンズ３を通り集束点
４に集束する。ビームコンデンサ９，１０と長焦
点集光レンズ３の働きによつて、ビームは集束点
４通過後の拡がりが小さくなり非金属積層波板８
の厚さ方向全域でよく集束した細径の高エネルギ
ー密度のビームが得られる。また、切断用ノズル
５よりビームと同軸状に噴出するアシストガス７
は、第４図に示すダイバーゼントノズルの使用に
より高流速・高流量となり、切断溝内部まで充分
供給される。 Next, the operation will be explained. The laser beam 2 guided from the laser oscillation device to the processing head 1 passes through a beam condenser consisting of a convex lens 9 and a concave lens 10, and becomes a parallel beam 11 whose diameter is smaller than the diameter of the laser beam 2 emitted from the laser oscillation device. , passes through a long focus condensing lens 3 and is focused onto a focal point 4. Due to the functions of the beam condensers 9 and 10 and the long focal length condensing lens 3, the beam spreads after passing through the convergence point 4 and is reduced to a non-metallic laminated corrugated plate 8.
A beam with a small diameter and high energy density is obtained that is well focused throughout the thickness direction. Additionally, assist gas 7 is ejected coaxially with the beam from the cutting nozzle 5.
By using the divergent nozzle shown in FIG. 4, a high flow rate and a high flow rate can be achieved, and a sufficient amount is supplied to the inside of the cutting groove.
さらに、被切断材料の特徴を利用し、第２図お
よび第３図に示すように非金属積層波板内部の空
洞を通して切断部にシールドガス７ａを供給し、
レーザービーム照射面の裏面からも裏面シールド
ガス供給用ノズル１４より切断進行部にシールド
ガス７ａを供給することによつて切断進行部のシ
ールドを完全なものとしている。 Furthermore, utilizing the characteristics of the material to be cut, as shown in FIGS. 2 and 3, a shielding gas 7a is supplied to the cutting section through the cavity inside the non-metallic laminated corrugated plate,
By supplying the shielding gas 7a to the cutting progressing part from the back side of the laser beam irradiation surface from the backside shielding gas supply nozzle 14, the cutting progressing part is completely shielded.
以上のように、レーザービームの集束細径部長
の拡大と切断進行部のシールドの改善によつて、
切断面の炭化の度合が少く、平面度のよい高品質
切断ができる。 As mentioned above, by expanding the focused narrow diameter section of the laser beam and improving the shielding of the cutting progress section,
The degree of carbonization on the cut surface is low, allowing for high-quality cuts with good flatness.
なお、上記実施例では被切断材料として積層段
ボール紙のレーザー切断について説明したが、プ
ラスチツク等他の非金属積層波板で材料内部にガ
スが流通する空洞を有する非金属材料でもよく、
上記実施例と同様の効果を奏する。 In addition, in the above embodiment, laser cutting of laminated corrugated paperboard was explained as the material to be cut, but other nonmetallic laminated corrugated sheets such as plastics may also be used, and the material may also be a nonmetallic material having a cavity through which gas flows.
The same effects as in the above embodiment are achieved.
以上のように、この発明によれば積層波板の側
面より波板の層間を経由して切断進行部にシール
ドガスを供給し、切断進行部のシールドを改善し
たので、非金属積層波板のレーザー切断において
切断面の炭化しない平面度のよい高品質切断が行
なえる効果がある。 As described above, according to the present invention, the shielding gas is supplied from the side of the laminated corrugated sheet to the cutting progressing section through the interlayers of the corrugated sheet, and the shielding of the cutting progressing section is improved. In laser cutting, it is possible to perform high-quality cutting with good flatness without carbonizing the cut surface.
第１図は従来のレーザー切断装置の加工ヘツド
および加工部分を示す断面図、第２図はこの発明
の一実施例を示す断面図、第３図は第２図に示す
一実施例の外観図、第４図は第２図に示す一実施
例で使用した切断用ダイバーゼントノズルを示
し、第４図ａは断面図、第４図ｂは平面図であ
る。
図中、２はレーザービーム、３は集光レンズ、
５は切断用ノズル、７はアシストガス、７ａはシ
ールドガス、８は非金属積層波板、９は凸レン
ズ、１０は凹レンズ、１２は側面シールドガス供
給用チヤンバ、１４は裏面シールドガス供給用ノ
ズル。なお、図中同一符号は夫々同一または相当
部分を示す。
Fig. 1 is a sectional view showing the processing head and processing portion of a conventional laser cutting device, Fig. 2 is a sectional view showing an embodiment of the present invention, and Fig. 3 is an external view of the embodiment shown in Fig. 2. 4 shows a divergent cutting nozzle used in the embodiment shown in FIG. 2, with FIG. 4a being a sectional view and FIG. 4b being a plan view. In the figure, 2 is a laser beam, 3 is a condensing lens,
5 is a cutting nozzle, 7 is an assist gas, 7a is a shielding gas, 8 is a non-metal laminated corrugated plate, 9 is a convex lens, 10 is a concave lens, 12 is a chamber for supplying side shielding gas, and 14 is a nozzle for supplying backside shielding gas. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
照射して前記積層波板を切断する切断方法におい
て、レーザービームと同軸状に噴出するアシスト
ガスに加えて、さらにアルゴンガス、窒素ガスな
どの不燃性ガスを前記積層波板の側面より前記積
層波板の層間を経由してその切断進行部にシール
ドガスとして供給するようにしたことを特徴とす
る非金属積層波板のレーザー切断方法。 ２ 切断用ノズルにダイバーゼントノズルを使用
することを特徴とする特許請求の範囲第１項記載
の非金属積層波板のレーザー切断方法。 ３ 集光レンズに入射されるレーザービームが凸
レンズ−凹レンズの組合せよりなるビームコンデ
ンサを通過することを特徴とする特許請求の範囲
第１項ないし第２項記載の非金属積層波板のレー
ザー切断方法。[Scope of Claims] 1. In a cutting method in which a laminated corrugated plate made of a non-metallic material is irradiated with a laser beam to cut the laminated corrugated plate, in addition to an assist gas ejected coaxially with the laser beam, argon gas, A laser for a non-metallic laminated corrugated sheet, characterized in that a non-flammable gas such as nitrogen gas is supplied as a shielding gas from the side surface of the laminated corrugated sheet to the cutting progress portion of the laminated corrugated sheet via the interlayers of the laminated corrugated sheet. Cutting method. 2. A method for laser cutting a non-metallic laminated corrugated plate according to claim 1, characterized in that a divergent nozzle is used as the cutting nozzle. 3. A method for laser cutting a non-metallic laminated corrugated plate according to claims 1 or 2, characterized in that the laser beam incident on the condenser lens passes through a beam condenser formed by a combination of a convex lens and a concave lens. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55159339A JPS5785688A (en) | 1980-11-12 | 1980-11-12 | Laser cutting method for non-metallic corrugated laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55159339A JPS5785688A (en) | 1980-11-12 | 1980-11-12 | Laser cutting method for non-metallic corrugated laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5785688A JPS5785688A (en) | 1982-05-28 |
| JPH0112593B2 true JPH0112593B2 (en) | 1989-03-01 |
Family
ID=15691666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55159339A Granted JPS5785688A (en) | 1980-11-12 | 1980-11-12 | Laser cutting method for non-metallic corrugated laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5785688A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6127188A (en) * | 1984-07-17 | 1986-02-06 | Mitsubishi Electric Corp | Laser welding device |
| JPS61148489U (en) * | 1985-03-01 | 1986-09-12 | ||
| JPS6245495A (en) * | 1985-08-21 | 1987-02-27 | Toyota Motor Corp | Cutting method for material of synthetic resin |
| US4639572A (en) * | 1985-11-25 | 1987-01-27 | Ibm Corporation | Laser cutting of composite materials |
| JP4775699B2 (en) * | 2005-09-02 | 2011-09-21 | 日立金属株式会社 | Laser double-sided groove processing apparatus and double-sided groove processing method |
| JP6242778B2 (en) * | 2014-09-30 | 2017-12-06 | 三菱重工業株式会社 | Laser cutting method |
-
1980
- 1980-11-12 JP JP55159339A patent/JPS5785688A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5785688A (en) | 1982-05-28 |
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