JPH04157082A - Laser beam welding method - Google Patents

Laser beam welding method

Info

Publication number
JPH04157082A
JPH04157082A JP2276679A JP27667990A JPH04157082A JP H04157082 A JPH04157082 A JP H04157082A JP 2276679 A JP2276679 A JP 2276679A JP 27667990 A JP27667990 A JP 27667990A JP H04157082 A JPH04157082 A JP H04157082A
Authority
JP
Japan
Prior art keywords
laser beam
sheet
joining
filler metal
joined
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.)
Pending
Application number
JP2276679A
Other languages
Japanese (ja)
Inventor
Takashi Ishide
孝 石出
Haruki Shirata
白田　春樹
Masahiko Mega
雅彦 妻鹿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP2276679A priority Critical patent/JPH04157082A/en
Publication of JPH04157082A publication Critical patent/JPH04157082A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/305—Decorative or coloured joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1658—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning once, e.g. contour laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/168—Laser beams making use of an absorber or impact modifier placed at the interface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/002—Coloured

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Laser Beam Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To perform sound laser beam welding at high speed on thick-wall resins by using filler metal with high absorptivity of a laser beam which does not affect adversely joint performance of a joining part of the same material, etc., with high absorptivity for the joining part. CONSTITUTION:A lower material (sheet) 2 to be joined is set on a base plate and the filler metal (colored sheet) 3 which is colored material of the same quality as the upper and lower materials (sheets) 1 and 2 to be joined and has high absorptivity of the laser beam is placed thereon. A convergent laser beam 4 is projected and absorbed via a condenser lens 5 on a joining line of the upper material (sheet) 1 to be joined and heat generation and fusion are proceeded with the filler metal (colored sheet) 3 as a main point. Consequently, the filler metal (colored sheet) 3 of the upper and lower materials (sheets) 1 and 2 to be joined and the adjacent vicinity are molten partially and proceeded to joining via the cooling process.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はレーザー光を透過しやすい薄肉厚シート等のレ
ーザー溶接方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for laser welding thin sheets and the like that easily transmit laser light.

〔従来の技術〕[Conventional technology]

透明四弗化エチレンシート等の薄肉厚シート（約１．　
Ｏｗｍ　ｔ　）の接合は、従来、温風ヒーター、電熱ヒ
ーター等を熱源として接合（溶接）する方法が知られて
いるが、最近は作業効率等の面からレーザー光を熱源と
しての高速レーザー溶接方法が採用されつつある。Thin-walled sheets such as transparent tetrafluoroethylene sheets (approximately 1.
Conventionally, methods for joining (welding) using hot air heaters, electric heaters, etc. are known as a heat source, but recently, from the viewpoint of work efficiency, high-speed laser welding methods using laser light as a heat source have been used. is being adopted.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

透明四弗化エチレンシート等の薄肉厚（約３゜０鶴を以
下）シートのレーザー溶接では、従来、第６図縦断面図
に示すように、シート自体がレーザー光の透過性を有す
る故、上下接合材（シー）ｌ　　１，２の重ね部にレー
ザー光４を集光して照射すると、上下接合材（シー））
１．２より底Ｆｉ７の材質によっては、レーザー光４が
底板７に吸収しやすいために、底板７あるいは、下部接
合材（シート）２との間に発熱の主点が住じ、接合部６
のように下部接合材（シート）２のみが主に溶融する不
健全な接合となり、これらを改善する方法が要望されて
いる。Conventionally, in laser welding of thin-walled sheets (less than about 3°0) such as transparent tetrafluoroethylene sheets, as shown in the vertical cross-sectional view of Figure 6, the sheet itself is transparent to the laser beam. When the laser beam 4 is focused and irradiated on the overlapped part of 1 and 2, the upper and lower joining material (see)
1.2, depending on the material of the bottom Fi 7, the laser beam 4 is easily absorbed by the bottom plate 7, so the main point of heat generation resides between the bottom plate 7 or the lower bonding material (sheet) 2, and the joint part 6
As shown in the figure, only the lower bonding material (sheet) 2 mainly melts, resulting in an unhealthy bond, and a method to improve these problems is desired.

の高速かつ健全なレーザー溶接を可能とするレーザー溶
接方法を提供することを目的とする。The purpose of the present invention is to provide a laser welding method that enables high-speed and sound laser welding.

〔課題を解決するための手段〕[Means to solve the problem]

そのために本発明は、レーザー光に対する透過性を有す
る薄肉厚シート等のレーザー溶接において、接合部に吸
収率を高くした同一材質等の接合部の継手性能に影響を
与えないレーザー光高咬収溶加材を用いることを特徴と
する。To this end, the present invention provides high-bite laser beam welding that does not affect the joint performance of joints made of the same material with high absorption rate when laser welding thin-walled sheets etc. that are transparent to laser light. It is characterized by the use of filler material.

〔作用〕[Effect]

このようなレーザー溶接方法によれば、レーザー光の透
過性をもつ薄肉厚シート等の溶接は、上下接合材１．２
を接合するにあたり上下接合材１．２の間に同材質であ
って上下接合材ｌ。According to such a laser welding method, welding of thin and thick sheets etc. that are transparent to the laser beam can be performed using the upper and lower joining materials 1.2.
When joining the upper and lower joining materials 1 and 2, the upper and lower joining materials 1 and 2 are made of the same material.

２よりレーザー光４の吸収率が極めて高い黒色あるいは
、有色シートの溶加材３をはさみ込み、この位置に集光
レンズ５を介した集束レーザー光４を吸収させ発熱、溶
融させる。A black or colored filler material 3, which has an extremely high absorption rate for the laser beam 4, is sandwiched therebetween, and the focused laser beam 4 passing through the condensing lens 5 is absorbed at this position, causing heat generation and melting.

この発熱、熔融により、上部接合材１及び下部接合材２
の隣接部の吸収率が向上し、熔融され冷却の後、接合に
至る。接合はまず底板７にレーザー光４の吸収による若
干の発熱を生しさせなから溶加材（有色シート）３に発
熱を生ずる。Due to this heat generation and melting, the upper bonding material 1 and the lower bonding material 2
The absorption rate of the adjacent part increases, and after being melted and cooled, it leads to bonding. In joining, the bottom plate 7 first generates some heat due to absorption of the laser beam 4, and then the filler material (colored sheet) 3 generates heat.

溶加材（有色シート）３と底板７との下部接合材２がこ
れらにより加熱され吸収率を向上し、上層部から熔融に
至ると共に吸収率の高い溶加材（有色シート）３が熔融
し、次第に底板７及び下部接合材（シート）２にレーザ
ー光は透過しにくくなり下部への溶融は鈍化する。The lower bonding material 2 between the filler material (colored sheet) 3 and the bottom plate 7 is heated by these to improve the absorption rate, and as the upper layer melts, the filler material (colored sheet) 3 having a high absorption rate melts. The laser beam gradually becomes difficult to pass through the bottom plate 7 and the lower bonding material (sheet) 2, and the melting to the lower part slows down.

一方、上部接合材（シート）１は、溶加材（有色シート
）３の溶融に伴い、溶触部により透過率により透過率を
低下させ下層部から吸収熱を生し溶融する。これらは、
適切なレーザー照射速度を与えることにより、上下接合
材（シー））１．２の溶加材（有色シート）３に隣接す
る近傍を部分的に溶融し上下極めて均等な健全性に冨む
溶接接合部を得ることができる。On the other hand, as the filler material (colored sheet) 3 melts, the upper bonding material (sheet) 1 lowers its transmittance due to the transmittance at the melting part, generates absorbed heat from the lower layer part, and melts. these are,
By applying an appropriate laser irradiation speed, the area adjacent to the filler metal (colored sheet) 3 of the upper and lower joining materials (see) 1 and 2 is partially melted, resulting in a welded joint with extremely even integrity on the upper and lower sides. You can get a portion.

〔実施例〕〔Example〕

本発明の一実施例を図面について説明すると、第１図縦
断面図及び横断面図において、下部接合材（シート）２
を第２図部分拡大図に示すように、底板７にセントし、
その上に上下接合材（シート）１．２と同質の有色材で
レーザー光の吸収率の高い溶加材（有色シート）３をの
せる。To explain one embodiment of the present invention with reference to the drawings, in FIG.
as shown in the partially enlarged view of Figure 2, on the bottom plate 7,
A filler material (colored sheet) 3, which is a colored material of the same quality as the upper and lower bonding materials (sheets) 1.2 and has a high absorption rate of laser light, is placed thereon.

溶加材（有色シート）３は、接合幅を確保できる幅で、
上下接合材（シー））１．２と同一長さのものを接合線
上にのせ、その上に上部接合材（ソート）１をセットす
る。上部接合材（ソート）１の接合線上に集光レンズ５
を介した集束レーザー光４を照射、吸収させ、溶加材（
有色シート）３を主点として発熱、熔融に至らせる。The filler material (colored sheet) 3 has a width that can secure the bonding width,
Place a piece of the same length as the upper and lower bonding material (see) 1.2 on the bonding line, and set the upper bonding material (sort) 1 on top of it. A condenser lens 5 is placed on the bonding line of the upper bonding material (sort) 1.
The focus laser beam 4 is irradiated and absorbed through the filler metal (
Colored sheet) 3 is the main point to generate heat and melt.

そうすると、この溶融に起因して、上下接合材（シート
）１．２の溶加材（有色シート）３との隣接近傍は部分
的に溶融し、冷却過程をへて接合に至る。Then, due to this melting, the vicinity of the upper and lower joining materials (sheets) 1.2 adjacent to the filler material (colored sheet) 3 is partially melted, leading to joining through a cooling process.

これらを用いての溶接の実施！Ｓ様は、溶接状況により
多様であり、以下これについて説明すると、まず第３図
縦断面図及び横断面図は上下接合材１，２　（以下接合
部材という）が短尺物で平面的な接合方法を示し、底板
７に溶加材（有色シート）３をはさみ込んだ接合部材を
押え板８で押え込みながら溶接する。同図（Ｄ）は同図
（Ｃ）のＡ−Ａ’　断面を示し、４はレーザー光、５は
集光レンズ、９．１０は押え板８を平坦に押えるための
スペーサーである。Welding using these! Mr. S varies depending on the welding situation, and to explain this below, first of all, the vertical cross-sectional view and cross-sectional view in Figure 3 show that the upper and lower joining materials 1 and 2 (hereinafter referred to as joining members) are short pieces and a planar joining method. , and welding is carried out while holding the joining member in which the filler metal (colored sheet) 3 is sandwiched between the bottom plate 7 and the holding plate 8. Figure (D) shows a cross section taken along the line AA' in Figure (C), where 4 is a laser beam, 5 is a condensing lens, and 9.10 is a spacer for holding the presser plate 8 flat.

次に、第４図は、例えば容器等の内面あるいは、外面の
シール材としで溶接する場合を示し、底板７は容器の内
面壁あるいは、外面壁であり、これに上述同様に接合部
材をセットし、押えローラー１２．１３で押えながらロ
ーラーを回転１４．１５Ｌ、接合方向１１にレーザー光
４を移動させ溶接する。同図（Ｅ）は、同図（Ｆ）のＢ
−Ｂ’断面である。Next, FIG. 4 shows a case in which welding is performed, for example, as a sealing material on the inner or outer surface of a container, etc., and the bottom plate 7 is the inner or outer wall of the container, and the joining member is set thereon in the same manner as described above. Then, while pressing with the presser rollers 12 and 13, the rollers are rotated 14.15L and the laser beam 4 is moved in the welding direction 11 to perform welding. The same figure (E) is B of the same figure (F).
-B' cross section.

更に、第５図は、長尺物の接合部材（シート）を生産工
場等で接合する場合のインライン化の為のもので、上述
の底板７に代わって、回転式移動底板１９を採用し、こ
れに一方より移動２１　（接合材移動方向を示す、）シ
てくる接合部材を載せ、押えローラー１２．１３で押え
ながら回転１４．１５移動、溶接し他方へ送り出す、（
接合材移動方向２１） ここで、同図（Ｈ）は、同図（Ｇ）の側面図で、１６．
１７は回転移動底板１９の駆動機構を示し、１８は駆動
機構部の回転方向を、２０は回転式移動底板の移動方向
をそれぞれ示す。Furthermore, FIG. 5 is for in-line when joining members (sheets) of long objects are joined in a production factory, etc., and a rotary movable bottom plate 19 is adopted in place of the above-mentioned bottom plate 7. Place the joining member to be moved 21 (indicates the direction of movement of the joining material) on this from one side, rotate 14.15 while pressing it with a presser roller 12.13, weld it, and send it out to the other side (
Bonding material movement direction 21) Here, the same figure (H) is a side view of the same figure (G), and 16.
Reference numeral 17 indicates a drive mechanism for the rotary movable bottom plate 19, 18 indicates the rotation direction of the drive mechanism, and 20 indicates the moving direction of the rotary movable bottom plate.

（発明の効果〕 このようなレーザー溶接方法によれば、接合部材（シー
ト）自体がレーザー光の透過性を有していても、上部接
合材と下部接合材との間に同一材質でレーザー光の吸収
率の高い黒色あるいは、有色の溶加材をはさみ込み、溶
接することにより底板へのレーザー光の吸収を極度に低
下させ、下部接合材のみの溶融を阻止し、レーザー光の
吸収による発熱、溶融を溶加材部に主点とすることによ
り溶加材を中心としたト下接合材の隣接部の部分熔融を
可能とし、上下接合材・へ、の均等な健全性に冨む、溶
接接合部を得ることができる。(Effect of the invention) According to such a laser welding method, even if the joining member (sheet) itself is transparent to the laser beam, the upper joining material and the lower joining material are made of the same material and the laser beam is not transmitted. By sandwiching black or colored filler metal with high absorption rate and welding, the absorption of laser light into the bottom plate is extremely reduced, preventing melting of only the lower bonding material, and reducing heat generation due to absorption of laser light. By focusing the melting on the filler metal part, it is possible to partially melt the adjacent parts of the lower joint material centered on the filler metal, and the integrity of the upper and lower joint materials is improved. Welded joints can be obtained.

要するに本発明によれば、レーザー光に対する透過性を
有する薄肉厚シート等のレーザー溶接において、接合部
に吸収率を高くした同一材質等の接合部の継手性能に影
響を与えないレーザー光高吸収溶加材を用いることによ
り、レーザー光透過性を有する肉厚樹脂類の高速かつ健
全なレーザー溶接を可能とするレーザー溶接方法を得る
から、本発明は産業上極めて有益なものである。In short, according to the present invention, in the laser welding of thin-walled sheets etc. that are transparent to laser light, the laser beam high absorption welding method is applied which does not affect the joint performance of the joint parts made of the same material with high absorption rate. The present invention is extremely useful industrially because it provides a laser welding method that enables high-speed and sound laser welding of thick resins that transmit laser light by using a filler material.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明第１実施例を示す縦断面図及び横断面図
、第２図は第１図の接合部の部分拡大図、第３図は第２
実施例を示す同じく縦断面図及び横断面図、第４図は第
３実施例を示す縦断面図及び横断面図、第５図は第４実
施例を示す縦断面図及び横断面図。 第６図は従来のレーザー溶接方法を示す横断面図である
。 １・・・上部接合材（シート）、２・・・下部接合材（
シート）、３・・・溶加材（ｉｉｒ色シート）、４・・
・レーザー光、５・・・集光レンズ、６・・・接合部、
７・・・底板、８・・・押え板、９・・・スペーサー、
ＩＯ・・・スペーサー、１１・・・接合方向、１２・・
・押えローラー、１３・・・押えローラー、１４・・・
ローラー回転方向、１５・・・ローラー回転方向、１６
・・・駆動機構部、１７・・・駆動機構部、１８・・・
回転方向、１９・・・回転式移動底板、２０・・・回転
式移動底板の移動方向、２１・・・接合材移動方向、代
理人　弁理士　塚　本　正　文 第１図 第２図 （Ｃ）第３図　（巧 第４図　（Ｆ〕 （Ｅλ 第５図 第６図FIG. 1 is a vertical cross-sectional view and a cross-sectional view showing the first embodiment of the present invention, FIG. 2 is a partially enlarged view of the joint in FIG. 1, and FIG.
FIG. 4 is a longitudinal sectional view and a transverse sectional view showing the third embodiment, and FIG. 5 is a longitudinal sectional view and a transverse sectional view showing the fourth embodiment. FIG. 6 is a cross-sectional view showing a conventional laser welding method. 1... Upper bonding material (sheet), 2... Lower bonding material (
sheet), 3... filler metal (IIR color sheet), 4...
・Laser light, 5... Condensing lens, 6... Joint part,
7... Bottom plate, 8... Holding plate, 9... Spacer,
IO...Spacer, 11...Joining direction, 12...
・Press roller, 13...Press roller, 14...
Roller rotation direction, 15...Roller rotation direction, 16
... Drive mechanism section, 17... Drive mechanism section, 18...
Rotation direction, 19...Rotary movable bottom plate, 20...Movement direction of rotary movable bottom plate, 21...Movement direction of bonding material, Agent: Patent Attorney Masa Tsukamoto Figure 1 Figure 2 (C) Figure 3 (Takumi Figure 4 (F) (Eλ Figure 5 Figure 6)

Claims (1)

【特許請求の範囲】[Claims] レーザー光に対する透過性を有する薄肉厚シート等のレ
ーザー溶接において、接合部に吸収率を高くした同一材
質等の接合部の継手性能に影響を与えないレーザー光高
吸収溶加材を用いることを特徴とするレーザー溶接方法
。In laser welding of thin and thick sheets that are transparent to laser light, it is characterized by the use of a filler material with high absorption of laser light that does not affect the joint performance of the joint, such as the same material with a high absorption rate. Laser welding method.
JP2276679A 1990-10-16 1990-10-16 Laser beam welding method Pending JPH04157082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2276679A JPH04157082A (en) 1990-10-16 1990-10-16 Laser beam welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2276679A JPH04157082A (en) 1990-10-16 1990-10-16 Laser beam welding method

Publications (1)

Publication Number Publication Date
JPH04157082A true JPH04157082A (en) 1992-05-29

Family

ID=17572811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2276679A Pending JPH04157082A (en) 1990-10-16 1990-10-16 Laser beam welding method

Country Status (1)

Country Link
JP (1) JPH04157082A (en)

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