JP4935625B2 - レーザ溶着部の構造及びレーザ溶着方法 - Google Patents
レーザ溶着部の構造及びレーザ溶着方法 Download PDFInfo
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- JP4935625B2 JP4935625B2 JP2007280537A JP2007280537A JP4935625B2 JP 4935625 B2 JP4935625 B2 JP 4935625B2 JP 2007280537 A JP2007280537 A JP 2007280537A JP 2007280537 A JP2007280537 A JP 2007280537A JP 4935625 B2 JP4935625 B2 JP 4935625B2
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- 238000003466 welding Methods 0.000 title claims description 47
- 238000000034 method Methods 0.000 title claims description 12
- 238000005452 bending Methods 0.000 claims description 13
- 239000003921 oil Substances 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 238000002834 transmittance Methods 0.000 claims 1
- 229920003002 synthetic resin Polymers 0.000 description 12
- 239000000057 synthetic resin Substances 0.000 description 12
- 238000005304 joining Methods 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- 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
- 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
-
- 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
- B29C66/114—Single butt joints
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- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
- B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
-
- 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
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
-
- 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
- B29C66/343—Making tension-free or wrinkle-free 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/344—Stretching or tensioning the joint area during joining
-
- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
- B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
-
- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
-
- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
-
- 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
- B29C65/1696—Laser beams making use of masks
-
- 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
- B29C66/434—Joining substantially flat articles for forming corner connections, fork connections or cross connections
- B29C66/4344—Joining substantially flat articles for forming fork connections, e.g. for making Y-shaped pieces
- B29C66/43441—Joining substantially flat articles for forming fork connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces, H-shaped pieces
-
- 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
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/749—Motors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
請求項3の発明においては、前記撓曲部は、段差部であることを特徴とする。
請求項4の発明においては、前記撓曲部は、応力集中抑制構造を有することを特徴とする。
以下に、この発明の第1実施形態を、図1〜図3に基づいて説明する。
図1に示すように、この第1実施形態においては、エンジンのシリンダブロック(図示しない)上に固定されたシリンダヘッド11上に、合成樹脂製の第1の部材としてのシリンダヘッドカバー12が装着されている。シリンダヘッドカバー12の頂壁12aの内面には、複数(実施形態では2条)の突壁13が突出形成されている。突壁13の先端面13aには、板状をなす合成樹脂製の第2の部材としてのバッフルプレート14が溶着されている。このバッフルプレート14は、レーザ光の透過性を有する。そして、バッフルプレート14,突壁13及びシリンダヘッドカバー12の頂壁12aの間には、ブローバイガスから潤滑オイルを分離するためのオイルセパレート室15が形成されている。なお、このオイルセパレート室15内には、図示しないオイル分離のための構成を備えている。
さて、レーザ溶着時には、図2(a)に示すように、シリンダヘッドカバー12が上下を逆にした状態で治具21上に載置される。そして、シリンダヘッドカバー12内の突壁13の先端面13a上にバッフルプレート14の撓曲部23間の位置が配置される。その後、撓曲部23と対応する位置よりも両外側の位置において、加圧部材22によりバッフルプレート14がシリンダヘッドカバー12側に加圧される。このため、バッフルプレート14の下面が突壁13の先端面13aに圧接状態で接合される。
(1) レーザ溶着終了にともなうバッフルプレート14の復元に際して溶着部24に剥離方向への力が作用することがないため、溶着部24の両端縁に亀裂が生じるおそれを防止することができる。このため、高い溶着強度を得ることができるとともに、突壁13の両側における空間の間に圧力差が必要な場合、その圧力差を維持できる。
次に、この発明の第2実施形態を、前記第1実施形態と異なる部分を中心に説明する。
さて、この第2実施形態においては、図4に示すように、バッフルプレート14における突壁13の先端面13aと対応する接合位置とその両外側の加圧位置との間の部分において、先端面13aから離隔し、レーザ光の照射部より板厚が薄く形成された他の部分よりも撓みやすい段差部よりなる一対の撓曲部26が形成されている。この撓曲部26の内コーナ26aは円弧状に形成されている。そして、レーザ溶着に際してバッフルプレート14が加圧されたとき、バッフルプレート14が、突壁13の先端面13aの角部を起点とすることなく、それよりも外側の撓曲部26を起点にして撓曲変形される。
(第3実施形態)
次に、この発明の第3実施形態を、前記第1実施形態と異なる部分を中心に説明する。
従って、この第3実施形態においては、撓曲部26における応力集中をさらに避けることができる。
次に、この発明の第4実施形態を、前記第1実施形態と異なる部分を中心に説明する。
さて、この第4実施形態では、図6に示すように、ケースにおいて、第1の部材としての合成樹脂製の下部ケース27の外周縁に、突壁としての周壁28が形成されている。第2の部材としての上部ケース29の外周縁には、下部ケース27の周壁28に対応するフランジ状の板状部29aが形成されている。板状部29aにおける周壁28の先端面28aと対応する接合位置とその両外側の加圧位置との間において先端面28aから離隔した位置には、他の部分よりも撓みやすい溝状の凹部よりなる一対の撓曲部30が形成されている。そして、前記第1実施形態と同様な方法により、周壁28の先端面28aに対して板状部29aが溶着されて、ケースが密閉状態に保持されている。
なお、この実施形態は、次のように変更して具体化することも可能である。
・ 前記実施形態において、撓曲部を凹部または段差部とは異なった薄肉部等の他の形状にすること。例えば、バッフルプレート等の第2の部材に、その溶着部から所定距離離隔した位置から両側に向かって厚さが次第に薄くなる傾斜部を設けて、その傾斜部を撓曲部とすること。
Claims (6)
- 第1の部材に設けられた突壁の先端面に対して、板状をなすとともに、レーザ光透過性を有する第2の部材をレーザ溶着させたレーザ溶着部の構造において、
前記第2の部材における突壁の先端面対する接合位置から外側に離隔した位置には、他の部分よりも撓みやすい撓曲部を設けたことを特徴とするレーザ溶着部の構造。 - 前記撓曲部は、薄肉部であることを特徴とする請求項1に記載のレーザ溶着部の構造。
- 前記撓曲部は、段差部であることを特徴とする請求項1または2に記載のレーザ溶着部の構造。
- 前記撓曲部は、応力集中抑制構造を有することを特徴とする請求項1〜3のうちのいずれか一項に記載のレーザ溶着部の構造。
- 第1の部材がシリンダヘッドカバー、第2の部材がそのシリンダヘッドカバーの内側に固定されるバッフルプレートであって、それらの両部材の間にブローバイガスから潤滑オイルを分離するためのオイルセパレート室が形成されていることを特徴とする請求項1〜4のうちのいずれか一項に記載のレーザ溶着部の構造。
- 請求項1〜5のうちのいずれか1項に記載のレーザ溶着部の構造において、第1の部材に設けられた突壁の先端面に対して、第2の部材における撓曲部間の位置を接合した状態で、前記撓曲部よりも外側の位置において第2の部材を前記突壁に向かって加圧し、この状態で第2の部材を透過して突壁の先端面にレーザ光を照射することにより、突壁の先端面に第2の部材を溶着させることを特徴とするレーザ溶着方法。
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JP5996024B1 (ja) * | 2015-03-18 | 2016-09-21 | 大豊工業株式会社 | 合成樹脂溶着体及びその製造方法 |
JP6039728B2 (ja) * | 2015-04-07 | 2016-12-07 | 大豊工業株式会社 | 合成樹脂溶着体及びその製造方法 |
US20230054903A1 (en) * | 2020-04-27 | 2023-02-23 | Mitsubishi Electric Corporation | Joint structure of resin members, resin housing of electrical equipment, and laser welding method |
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JP2556836Y2 (ja) * | 1992-09-30 | 1997-12-08 | 株式会社テネックス | ロッカーカバー |
JPH11170371A (ja) * | 1997-12-17 | 1999-06-29 | Sakae Riken Kogyo Kk | 熱可塑性合成樹脂製部材のレーザ光による溶着方法 |
JP4193541B2 (ja) * | 2003-03-26 | 2008-12-10 | アイシン精機株式会社 | レーザ溶着方法 |
JP2005306310A (ja) * | 2004-04-26 | 2005-11-04 | Mitsuboshi Belting Ltd | 自動車用内装品の製造方法 |
JP4384071B2 (ja) * | 2005-02-28 | 2009-12-16 | トヨタ自動車株式会社 | 内燃機関のシリンダヘッドカバー |
JP2007210165A (ja) * | 2006-02-08 | 2007-08-23 | Denso Corp | レーザー光を用いた樹脂の溶着方法及び溶着装置 |
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