JPS60125645A - 合成樹脂製部品同士の接合方法 - Google Patents

合成樹脂製部品同士の接合方法

Info

Publication number
JPS60125645A
JPS60125645A JP58205889A JP20588983A JPS60125645A JP S60125645 A JPS60125645 A JP S60125645A JP 58205889 A JP58205889 A JP 58205889A JP 20588983 A JP20588983 A JP 20588983A JP S60125645 A JPS60125645 A JP S60125645A
Authority
JP
Japan
Prior art keywords
synthetic resin
joining
parts
frequency induction
resin
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.)
Granted
Application number
JP58205889A
Other languages
English (en)
Other versions
JPH043734B2 (ja
Inventor
Naoki Yoshimi
直喜 吉見
Hitoshi Ogasawara
仁 小笠原
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.)
NIPPON RADIATOR CO Ltd
Marelli Corp
Original Assignee
NIPPON RADIATOR CO Ltd
Nihon Radiator Co 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 NIPPON RADIATOR CO Ltd, Nihon Radiator Co Ltd filed Critical NIPPON RADIATOR CO Ltd
Priority to JP58205889A priority Critical patent/JPS60125645A/ja
Publication of JPS60125645A publication Critical patent/JPS60125645A/ja
Publication of JPH043734B2 publication Critical patent/JPH043734B2/ja
Granted 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
    • B29C66/10—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
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3644—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a ribbon, band or strip
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/4835—Heat curing adhesives
    • 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
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining 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
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92441—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time
    • B29C66/92443—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile
    • B29C66/92445—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile by steps
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 （技術分野） この発明は、例えば自動車用暖房機のヒータコア用の合
成樹脂製タンクとこのタンクに設けられる給排水用の通
水管とを液密に接合する場合に利用できる。
（背景技術） 合成樹脂製部品同士を液密に接合するための手段として
は、従来からねじとＯリングとを用いる方法、接着剤に
よる方法、或は加熱溶着による方法等が知られている。
このうち、加熱溶着による接合方法として、接合部に金
属を介在させ、この金属を高周波誘導加熱法により発熱
させて熱可塑性合成樹脂製部品の接合面を加熱溶着し、
この接合面同士を強く圧着し七合成樹脂製部品同士を液
密に接合する、高周波誘導加熱法による合成樹脂製部品
同士の接合方法が知られている。
このような接合方法としては、例えば米国特許第３４６
１０１４号明細書に記載された発明がある。この発明は
、同種材料製の合成樹脂製部品同士を接合する場合に、
接着面に磁性酸化鉄のような強磁性粉末を混入した接着
剤を塗布し、この強磁性粉末を高周波誘導加熱コイルに
よって発熱させることにより、上記接合すべき合成樹脂
製部品の接合面を溶融させ、接着剤の作用とあいまって
合成樹脂製部品同士を強力に接着するものである。とこ
ろが、本発明者の実験によると、このように強磁性粉末
を混入した接着剤を高周波誘導加熱法により発熱させよ
うとする場合、米国に置いて普及している２〜２７Ｍ）
Ｉｚの超高周波誘導加熱コイルでは十分に発熱させるこ
とはできても、我国に於いて普及しているｌＯＯ〜４５
０ＫＨｚの高周波誘導加熱コイルでは発熱が不十分とな
り、接合が行なえない。
又、特開昭４８−４９８２８号公報に記載されているよ
うに、合成樹脂製部品同士の接合面に金網を介在させ、
この金網を高周波誘導加熱法により発熱させて接合面の
合成樹脂を溶融させ、接合面同士を強く押圧して接合す
る方法がある。ところが、このような接合方法によると
、接合面積が比較的広い場合は良いが、合成樹脂製タン
クにパイプを接合する場合のように接合面積が狭くしか
も接合面の形状が環状等比較的複雑な場合、金網を所定
形状に形成したり、或は金網を接合面に正しく合せたり
する作業が面倒になる。更に、特開昭５３−５８５８２
号公報に記載されているように、接合部に鉄線等の加熱
用導体を介在させ、この加熱用導体を高周波誘導により
発熱させることにより、合成樹脂の接合面を溶融し接合
する方法では、ラジェータゆヒータコアのように、接合
部に繰り返し温水が供給され温度の昇降が激しいような
場合、合成樹脂と加熱用導体との熱膨張量の差に基いて
接合部に亀裂が生じ易く、水漏れ故障の原因となり易い
。
（発明の目的） 本発明は］二連のような不都合を解消し、国内で普及し
ている高周波誘導加熱コイルを使用して良好な接合を行
なうことができ、しかも接合部の温度の昇降が激しいよ
うな場合でも亀裂の発生による水漏れ故障が発生し難い
合成樹脂製部品同士の接合方法を提供することを目的と
している。
（発明の構成） 本発明の合成樹脂製部品同士の接合方法は、表面を研磨
し洗浄して耐熱水性ゴム変性熱硬化性樹脂接着剤を塗布
した金属製接合用部品を、接合すべき合成樹脂製部品の
接合面の間に挾持し、まず接合すべき部品同士を接合面
と接合用部品の表面とが密接する程度の圧力で軽く押圧
しつつ上記接合用部品の近くに設けた高周波誘導コイル
に通電し、この接合用部品を高周波誘導発熱させる。こ
の発熱により接合面の樹脂が溶融したならば接合すべき
部品同士を強く押圧し、高周波誘導コイルへの通電を停
止して上記溶融樹脂が冷却固化するまでそのまま保持す
る。これにより合成樹脂製部品同士が強固に接合される
ため、この後上記押圧を解除して接合された合成樹脂製
部品を取り出す。
（発明の実施例） 次に、図示の実施例を説明しつつ本発明を更に詳しく説
明する。
図示の実施例は、本発明の接合方法により、例えばナイ
ロンのような熱可塑性合成樹脂製のタンク１に同種合成
樹脂製の通液管２を接合する状態を示している。タンク
ｌの側面（又は上下面）に開口した通孔３の周縁部には
、上記通液管２に内嵌できる円筒部４が形成されており
、この円筒部４の周囲に位置するタンク側面に形成され
た環状の凹溝５内には、金属製で表面に耐熱水性ゴム変
性熱硬化性樹脂接着剤を塗布した環状の接合用部品６が
挿入されている。
接合用部品の主体となる金属材料は、高周波−誘導加熱
法により発熱する金属であれば良く、アルミニウム、銅
等も使用できるが、効率の面から鉄が最も好ましい。金
属材料の表面に上記樹脂接着剤を塗布するのに先立ち、
この金属材料の表面を研磨し洗浄するが、研磨するため
には、例えば粒度が１５０〜６００メンシュ程度のアル
ミナ粒をシロットピーニングの様に金属材料の表面に叩
き付けることにより容易に行なえる。又、洗浄手段とし
ては、粗化後の金属材料をトリクレン溶剤等の有機溶剤
中に浸漬し、超音波振動を加えることにより行なえば、
洗浄を効率的に行なうことができる。このように、金属
材料を研磨し洗浄することにより、金属材料表面の酸化
膜や油膜が除かれて１表面に樹脂接着剤を塗布した場合
に、この樹脂接着剤と金属材料表面とのなじみが良くな
り、結合強度が増す。金属材料の表面に塗布する耐熱水
性ゴム変性熱硬化性樹脂接着剤としては、例えばアクリ
ロニトリルゴム変性フェノール樹脂接着剤（ボスチック
φジャパン社製、商品名１７５５．２３００Ｓ等）が使
用できる。この接着剤は金属材料の表面に塗布後、未硬
化の状態で乾燥しておく。
このようにして金属材料表面を処理し、この金属材料表
面に耐熱水性ゴム変性熱硬化性樹脂接着剤を塗布した接
合用部品６は、図示のようにタンク側面の凹溝５内に挿
入し、この凹溝５の底面と円筒部４に外嵌した通液管２
の端面との間でこの接合用部品６を比較的軽い力で一次
加圧する。この−次加工時の圧力は０．５〜５Ｋｇ／Ｃ
ｍ’が適当であるが、この−次加圧によって接合用部品
６の表面と、凹溝５の底面及び通液管２の端面とが良好
に接触し、高周波誘導加熱により接合用部品６が発熱し
た場合に、この熱が上記凹溝５の底面と通液管２の端面
とに良好に伝達する。
次に、この−次加圧をした状態で、接合用部品６の近く
に設けた高周波誘導コイル７に通電し、この接合用部品
６に高周波誘導電流を惹起Ｓせることによりこの部品６
をジュール発熱させ、接合用部品６に接触している凹溝
５の底面と通液管２の端面との樹脂を溶融させる。高周
波誘導コイル７への通電時間は接合すべき部品の大きさ
等種々の条件により異なるが、例えば自動車用ヒータコ
アの合成樹脂製タンクに合成樹脂製通液管を接合する場
合で、４〜１０秒程度通電すれば足りる。
高周波誘導コイル７への通電により接合部の合成樹脂が
溶融したならば、タンクｌと通液管２とを互いに強い力
で押圧する二次加圧を行ない、高周波誘導コイル７への
通電停止後、溶融樹脂が冷却固化するまでそのままの状
態を保持する。保持時間は接合すべき部品の大きさ等種
々の条件により異なるが、上記した自動車用ヒータコア
の接合を行ない自然冷却した場合で３０〜６０秒程度あ
れば十分であり、冷風吹付等強制冷却手段を採用すれば
この保持時間を短縮することもできる。
二次加圧時の圧力は１８０〜２５０　Ｋｇ／ｃｍ’が適
当であるが、この二次加圧によってタンクｌと通液管２
どの溶融樹脂同士が混ざり合うとともに、接合用部品６
の表面の樹脂接着剤と、接合用部品の主体をなす金属材
料及び接合すべき部品の合成樹脂とが強く接着し、溶融
樹脂が冷却固化した後はタンク１と通液管２とが強固に
接合される。
接合作業時に最初から強い加圧を行なわずに比較的弱い
圧力による一次加圧と強い圧力による二次加圧とに分け
たのは次の理由による。即ち、最初から強い圧力により
タンクｌと通液管２とを押圧すると、接合用部品６の発
熱に伴って溶融した樹脂が凹溝５外に勢い良く押し出さ
れて接合面全体に溶融樹脂が行き亘らない場合が生じ、
接合部に水漏れが発生する頻度が高くなる。これに対し
て、本発明のように初めに弱い一次加圧をした状態で接
合用部品６を発熱させれば、この発熱により生じた溶融
樹脂は、接合面の全体に均等に行き亘り、その後強い二
次加圧をした際にも接合面の一部に溶融樹脂が存在しな
くならず、接合部からの水漏れを発生し難くなる。
このようにして合成樹脂製部品同士を接合した場合、金
属を主体とする接合用部品が接合部に内蔵されたままの
状態となる。この金属を主体とする接合用部品と合成樹
脂製部品（タンクｌ、通液管２）とは熱膨張率が異なる
が、金属と合成樹脂との間にはゴム弾性を有する樹脂接
着剤が存在す。
るため、接合部の温度が大きく変化した場合でも、熱膨
張量の差に起因する金属と合成樹脂との接合面間のずれ
はゴム弾性により吸収され、接合用部品と合成樹脂との
間に熱膨張量の差に伴う剥離が生じたり、接合部に亀裂
が発生したりすることはない。このため、本発明の方法
により得られた合成樹脂製部品同士の接合部は熱サイク
ルに対しても破壊され難い耐久性の勝れたものとなる。
次に、本発明の効果を確かめるために本発明者の行なっ
た実験について説明する。
実験は、接合用部品として単なる鉄製の環体を使用した
場合（比較例１）と、接合用部品として鉄製の環体に表
面を研磨し洗浄することなく耐熱水性ゴム変性熱硬化性
樹脂接着剤を塗布したものを使用した場合（比較例２）
と、接合用部品として鉄製の環体の表面を研磨し洗浄し
て耐熱水性ゴム変性熱硬化性樹脂接着剤を塗布したもの
を使用した場合（本発明品）とについて接合部の強度、
熱サイクルを加えた後の気密性について比較した。
接合強度について上記王者の比較を行なった所、いずれ
に於いても合成樹脂製部品同士をねじにより接合した従
来品に比べて２倍以上の強度（曲げ強さ）を有し、十分
であることが解った。
次に、熱サイクルを加えた後に於ける気密性の比較を行
なった所、比較例１については気密性が不十分であった
。又、比較例２の場合、比較例１に比べると気密性が向
上したが、更に繰り返し熱サイクルを加えることにより
一部気密不良の試験片が生じた。これに対し本発明品の
場合、いずれ１ の試験片も繰り返し加えられた熱サイクルによっても十
分な気密性を発揮した。
（発明の効果） 本発明の合成樹脂製部品同士の接合方法は以上に述べた
様に、合成樹脂製部品同士の接合を容易かつ強固に行な
うことができ、耐久性の勝れた合成樹脂製品を得ること
ができる。
【図面の簡単な説明】
図面は本発明の実施例を示す縦断面図である。 ｌ：タンク、２二通液管、３：通孔、４：円筒部、５：
凹溝、６：接合用部品、７：高周波誘導コイル。 特許出願人　日本ラヂヱーター株式会社代　理　人　小
　山　欽　造（ほか１名）２ 壬ゑ＃□丁□（白□） −Ｊ　″紙出ｆｆｆｊ　、　１−ｆユＷ（ｔ：ｌ　ヲセ
ノ昭和５８年１月１８日 特許庁長官　若　杉　和　夫　殿 １、事件の表示 昭和５８年特許願第２０５８８９号 ２、発明の名称　合成樹脂製部品同士の接合方法３、補
正をする者 本件との関係　特許出願人 （４７６）日本ラヂヱーター株式会社 ４、代理人〒１０４ 除し１代って「の表面にこの」と加入する。

Claims (1)

    【特許請求の範囲】
  1. 表面を研磨し洗浄して耐熱水性ゴム変性熱硬化性樹脂接
    着剤を塗布した金属製接合用部品を、接合すべき合成樹
    脂製部品の接合面の間に挾持してこの接合面と接合用部
    品表面とが密接する程度の圧力により一次加圧した状態
    で、上記接合用部品の近くに設けた高周波誘導コイルに
    通電することによりこの接合用部品をジュール発熱させ
    、接合用部品に接触した合成樹脂製部品の接合面の合成
    樹脂が溶融した状態で合成樹脂製部品同士を強い圧力で
    二次加圧し、高周波誘導コイルに通電停止後溶融樹脂が
    冷却固化してから上記二次加圧を解除する合成樹脂製部
    品同士の接合方法。
JP58205889A 1983-11-04 1983-11-04 合成樹脂製部品同士の接合方法 Granted JPS60125645A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58205889A JPS60125645A (ja) 1983-11-04 1983-11-04 合成樹脂製部品同士の接合方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58205889A JPS60125645A (ja) 1983-11-04 1983-11-04 合成樹脂製部品同士の接合方法

Publications (2)

Publication Number Publication Date
JPS60125645A true JPS60125645A (ja) 1985-07-04
JPH043734B2 JPH043734B2 (ja) 1992-01-24

Family

ID=16514405

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58205889A Granted JPS60125645A (ja) 1983-11-04 1983-11-04 合成樹脂製部品同士の接合方法

Country Status (1)

Country Link
JP (1) JPS60125645A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63203322A (ja) * 1987-02-19 1988-08-23 Kyowa Seiki Kk プラスチツク成形物溶着方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63203322A (ja) * 1987-02-19 1988-08-23 Kyowa Seiki Kk プラスチツク成形物溶着方法

Also Published As

Publication number Publication date
JPH043734B2 (ja) 1992-01-24

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