JP5590878B2 - 樹脂成形部材 - Google Patents
樹脂成形部材 Download PDFInfo
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- JP5590878B2 JP5590878B2 JP2009291596A JP2009291596A JP5590878B2 JP 5590878 B2 JP5590878 B2 JP 5590878B2 JP 2009291596 A JP2009291596 A JP 2009291596A JP 2009291596 A JP2009291596 A JP 2009291596A JP 5590878 B2 JP5590878 B2 JP 5590878B2
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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
- B29C66/70—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
-
- 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
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin 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
-
- 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
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot 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
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30221—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being point-like
-
- 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
- B29C66/545—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 one hollow-preform being placed inside the other
-
- 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
- B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
- B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
- B29C66/9513—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools characterised by specific vibration frequency values or ranges
-
- 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
- B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
- B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
- B29C66/9517—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools characterised by specific vibration amplitude values or ranges
-
- 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
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
- B29C65/0609—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding characterised by the movement of the parts to be joined
- B29C65/0618—Linear
-
- 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
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
-
- 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
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3055—Cars
- B29L2031/3058—Spoilers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
熱可塑性樹脂からなる第1部材と、
熱可塑性樹脂からなる第2部材と、
前記第1部材に複数形成され、振動溶着により前記第2部材との当接部分を溶融して該第2部材に固着される柱状の溶着突起とを有し、
相互に最も近接する3つの溶着突起は、各内角が55°〜65°の範囲にある三角形の頂点に前記第2部材に溶着した溶着面の重心が夫々位置する関係になるように離間配置されていることを特徴とする。
請求項1の発明によれば、相互に最も近接する3つの溶着突起を、各内角が55°〜65°の範囲にある三角形の頂点に溶着面の重心が夫々位置する関係になるように離間配置して、各溶着突起の離間距離が等しいか略等しくなるようにしたので、第2部材のヒケが目立ち難くなり、第2部材の表面品質を向上し得る。また、溶着突起の離間距離が等しいか略等しくなることで、溶着突起が第1部材にバランスよく配置され、第1部材および第2部材の溶着箇所に偏りが生ずるのを防止し得る。しかも、溶着突起の離間距離を等しくまたは略等しくすることで、同じ離間距離で溶着突起を格子状に配置した場合に比べ、第1部材の単位面積当たりに設置し得る溶着突起の数を多くすることができ、第1部材および第2部材の溶着強度を大きくすることができる。
請求項2の発明によれば、溶着突起の離間距離を限界近接距離以上とすることで、隣接する溶着突起の当接部分が溶融することで溶着面の外側に広がる溶融樹脂が重ならず、第2部材に深いヒケが生じるのを防止することができる。従って、第2部材に生じるヒケが目立ち難くなって、樹脂成形部材の見栄えをよくし得る。
請求項3の発明によれば、限界近接距離を4.0mmとすることで、溶着突起の離間距離が4.0以上となって第2部材に深いヒケが生じるのを防止し得る。
請求項4の発明によれば、溶着突起の溶着面の直径を所定の範囲内としたので、溶着突起に十分な強度が確保されて振動溶着時に溶着突起が折曲したり破断するのを抑制し得る。また、溶着面の直径を所定の範囲内にすることで、溶着面と第2部材との溶着力が向上し、第1部材および第2部材の溶着強度が不足することがない。
請求項5の発明によれば、溶着突起の根元部分の断面積を溶着面の面積より大きくしたので、溶着突起の強度を高めることができ、振動溶着時に溶着突起が折曲したり破断するのを防止できる。
次に、本発明の樹脂成形部材の効果を確認するべく、以下の比較実験を行なった。実施例で説明したように、隣接する3つの溶着突起を三角形状に配置して溶着突起の離間距離を等しくした場合(実験例1〜10)と、図8で説明したように、溶着突起を格子状に設けた場合(比較例1〜10)とにおいて、インナー部材およびアウター部材を振動溶着により固着し、得られたリアスポイラーの外観を比較した。また、インナー部材およびアウター部材の溶着強度の評価を併せて行なった。実験例1〜10および比較例1〜10における溶着突起の寸法および離間距離を以下に示す。なお、「離間距離l」、「高さh」、「直径D」とは、夫々、実施例で定義した通りである。インナー部材およびアウター部材としては、図6(a),(b)に示すように、ABS樹脂を矩形板状に形成したものを用いた。図6(a)に示すアウター部材の寸法は、90mm×150mm×3.0mmである。また、図6(b)に示すように、溶着突起は、2列一組としたものをインナー部材の表面に3組配置した。
押圧力:2698N
振動振幅:1.00mm
振動数:240Hz
その結果を以下に示す。なお、外観が「×」とは、アウター部材に生ずるヒケが不均一となって、アウター部材の表面品質が低い状態を示している。外観が「○」とは、アウター部材に生ずるヒケが目立ち難くなって、アウター部材の表面品質が「×」の場合に比べて高い状態を示している。外観が「◎」とは、アウター部材に深いヒケが生じることなく、アウター部材の表面品質が「○」よりも高く見栄えが最もよい状態を示している。また、「折曲」とは、振動溶着時に溶着突起が折曲または破断して、インナー部材およびアウター部材の溶着が不能となった場合を示し、強度不足とは、インナー部材およびアウター部材の溶着強度が所定の基準値(本実験では280.8Nとした)より小さく、溶着力が不十分であった場合を示している。
40 溶着突起,42 溶着面,44 溶融部(当接部分),48 根元部分
l 離間距離,lm 限界近接距離,D 直径,θ 角度(内角)
Claims (5)
- 熱可塑性樹脂からなる第1部材と、
熱可塑性樹脂からなる第2部材と、
前記第1部材に複数形成され、振動溶着により前記第2部材との当接部分を溶融して該第2部材に固着される柱状の溶着突起とを有し、
相互に最も近接する3つの溶着突起は、各内角が55°〜65°の範囲にある三角形の頂点に前記第2部材に溶着した溶着面の重心が夫々位置する関係になるように離間配置されている
ことを特徴とする樹脂成形部材。 - 前記溶着突起の離間距離は、振動溶着により前記当接部分が溶融することで前記溶着面の外側に広がる溶融樹脂が互いに重ならない限界近接距離以上に設定されている請求項1記載の樹脂成形部材。
- 前記限界近接距離は、4.0mmである請求項2記載の樹脂成形部材。
- 前記溶着突起は断面円形の円柱状に形成され、該溶着突起における前記溶着面の直径が1.5mm〜4.0mmとなっている請求項1〜3の何れか一項に記載の樹脂成形部材。
- 前記溶着突起における根元部分の断面積が、前記溶着面の面積より大きくなっている請求項1〜4の何れか一項に記載の樹脂成形部材。
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