JP4505945B2 - Rotational friction welding method and parts to be welded, container manufacturing method, container body and container cap - Google Patents
Rotational friction welding method and parts to be welded, container manufacturing method, container body and container cap Download PDFInfo
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- JP4505945B2 JP4505945B2 JP2000142632A JP2000142632A JP4505945B2 JP 4505945 B2 JP4505945 B2 JP 4505945B2 JP 2000142632 A JP2000142632 A JP 2000142632A JP 2000142632 A JP2000142632 A JP 2000142632A JP 4505945 B2 JP4505945 B2 JP 4505945B2
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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
- B29C65/06—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
- B29C65/0672—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
- 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
- B29C65/069—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 the welding tool cooperating with specially formed features of at least one of the parts to be joined, e.g. cooperating with holes or ribs of at least one of 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
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of 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
- 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
- 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
- B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
- B29C66/322—Providing cavities in the joined article to collect the burr
-
- 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
- B29C66/51—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
- B29C66/80—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Jars (AREA)
- Closures For Containers (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【０００１】
【発明の属する技術分野】
この発明は、回転摩擦溶接方法およびこの方法の実施に用いられる被溶接部品、ならびに容器の製造方法、容器の製造に用いられる容器本体および容器用キャップに関する。
【０００２】
【従来の技術】
たとえば、ペースト状コーキング材を充填する押出式容器として、熱可塑性プラスチック製円筒胴と、円筒胴の一端開口内にはめ入れられる短円筒状部、および短円筒状部の一端に一体に形成されかつ円筒胴の端面に密接する外向きフランジを有するとともに、円筒胴の一端開口を閉鎖する熱可塑性プラスチック製キャップとよりなるものが知られている。
【０００３】
このようなコーキング材充填用押出式容器は、従来、キャップの短円筒状部を円筒胴の一端開口内にはめ入れ、円筒胴の端面とキャップの外向きフランジとを軸線方向に加圧した状態で円筒胴とキャップとを相対回転させるという回転摩擦溶接方法により円筒胴とキャップとを接合することによって製造されていた。
【０００４】
【発明が解決しようとする課題】
しかしながら、従来の製造方法によれば、主に円筒胴の端面とキャップの外向きフランジとの間で発生する溶融かすが、円筒胴およびキャップの相対回転時に両者間に生じる隙間を通って内部に侵入し、ここで固化してバリとなる。ところで、製造された容器内に侵入し固化したバリの除去作業は極めて困難であるため、容器内にバリが残ることになる。そのため、容器内に充填されたコーキング材にバリが混入し、コーキング材の品質が低下するという問題があった。
【０００５】
この発明の目的は、上記問題を解決し、得られた容器の内部にバリが侵入することのない回転摩擦溶接方法およびこの方法の実施に用いられる被溶接部品、ならびに容器の製造方法、容器の製造に用いられる容器本体および容器用キャップを提供することにある。
【０００６】
【課題を解決するための手段と発明の効果】
請求項１の発明による回転摩擦溶接方法は、少なくとも内周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ先端が開口した円筒状部を有する第１の被溶接部品と、少なくとも外周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ第１被溶接部品の円筒状部内にはめ入れられる円筒状部、および円筒状部の外周面に形成されかつ少なくとも表面が所定厚さの熱可塑性プラスチックで覆われた環状段部を有する第２の被溶接部品とを用意すること、第１被溶接部品の円筒状部の内周面および第２被溶接部品の円筒状部の外周面のうちの少なくともいずれか一方に、複数の環状溝を全周にわたって形成すること、ならびに第２被溶接部品の円筒状部を第１被溶接部品の円筒状部内にはめ入れるとともに、第１被溶接部品の円筒状部の端面を第２被溶接部品の環状段部に軸線方向に押し付けた状態で２つの被溶接部品を相対回転させて接合することを特徴とするものである。
【０００７】
請求項１の発明の回転摩擦溶接方法によれば、２つの被溶接部品の相対回転時に第１被溶接部品の端面と第２被溶接部品の環状段部との間で発生する溶融かすは、環状溝内に捕捉されてここに滞留するので、得られた製品内部にバリが侵入することはなくなる。しかも、溶融状態のバリが環状溝内を埋めてここで固化するので、２つの被溶接部品の接合強度の向上に寄与する。
【０００８】
請求項２の発明による回転摩擦方法は、請求項１の発明において、第１被溶接部品が全長にわたって円筒状となされた円筒胴であり、第２被溶接部品が円筒胴の一端開口内にはめ入れられる短円筒状部を有するとともに円筒胴の一端開口を閉鎖するキャップであり、環状段部が第２被溶接部品に形成されたフランジであるものである。
【０００９】
請求項３の発明による回転摩擦溶接方法は、少なくとも内周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ先端が開口した円筒状部、および円筒状部の内周面に形成されかつ少なくとも表面が所定厚さの熱可塑性プラスチックで覆われた環状段部を有する第１の被溶接部品と、少なくとも外周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ第１被溶接部品の円筒状部内にはめ入れられる円筒状部を有する第２の被溶接部品とを用意すること、第１被溶接部品が全長にわたって円筒状となされた円筒胴であり、第２被溶接部品が円筒胴の一端開口内にはめ入れられる短円筒状部を有するとともに円筒胴の一端開口を閉鎖するキャップであり、環状段部が第１被溶接部品に形成されたフランジであること、第１被溶接部品の円筒状部の内周面および第２被溶接部品の円筒状部の外周面のうちの少なくともいずれか一方に、複数の環状溝を全周にわたって形成すること、ならびに第２被溶接部品の円筒状部を第１被溶接部品の円筒状部内にはめ入れるとともに、第２被溶接部品の円筒状部の端面を第１被溶接部品の環状段部に軸線方向に押し付けた状態で２つの被溶接部品を相対回転させて接合することを特徴とすることを特徴とするものである。
【００１０】
請求項３の発明の回転摩擦溶接方法によれば、２つの被溶接部品の相対回転時に第２被溶接部品の端面と第１被溶接部品の環状段部との間で発生する溶融かすは、環状溝内に捕捉されてここに滞留するので、得られた製品内部にバリが侵入することはなくなる。しかも、溶融状態のバリが環状溝内を埋めてここで固化するので、２つの被溶接部品の接合強度の向上に寄与する。
【００１１】
請求項４の発明による回転摩擦溶接方法は、請求項１、２または３の発明において、第１被溶接部品の円筒状部の内径が、第２被溶接部品の円筒状部の外径よりも小さくなされているものである。
【００１２】
請求項５の発明による容器の製造方法は、少なくとも内周面の所定厚さ部分が熱可塑性プラスチックで覆われた円筒状口部を有する容器本体と、少なくとも外周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ容器本体の円筒状口部内にはめ入れられる円筒状部、および円筒状部の外周面に形成されかつ少なくとも表面が所定厚さの熱可塑性プラスチックで覆われた環状段部を有するとともに、容器本体の円筒状口部を閉鎖する容器用キャップとを用意すること、容器本体の円筒状口部の内周面および容器用キャップの円筒状部の外周面の内少なくともいずれか一方に、複数の環状溝を全周にわたって形成しておくこと、ならびに容器本体の円筒状口部内に容器用キャップの円筒状部をはめ入れるとともに、容器本体の円筒状口部の端面を容器用キャップの環状段部に押し付けた状態で両者を相対回転させて回転摩擦溶接することを特徴とするものである。
【００１３】
請求項５の発明の容器の製造方法によれば、容器本体と容器用キャップとの相対回転時に容器本体の円筒状口部の端面と容器用キャップの環状段部との間で発生する溶融かすは、環状溝内に捕捉されてここに滞留するので、得られた容器内部にバリが侵入することはなくなる。したがって、容器内に充填される内容物へのバリの混入が防止され、その結果内容物の品質低下が防止される。しかも、溶融状態のバリが環状溝内を埋めてここで固化するので、容器本体と容器用キャップとの接合強度の向上に寄与する。
【００１４】
請求項６の発明による容器の製造方法は、少なくとも内周面の所定厚さ部分が熱可塑性プラスチックで覆われた円筒状口部、および円筒状口部の内周面に形成されかつ少なくとも表面が所定厚さの熱可塑性プラスチックで覆われた環状段部を有する容器本体と、少なくとも外周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ容器本体の円筒状口部内にはめ入れられる円筒状部を有するとともに、容器本体の円筒状口部を閉鎖する容器用キャップとを用意すること、容器本体の円筒状口部の内周面および容器用キャップの円筒状部の外周面の内少なくともいずれか一方に、複数の環状溝を全周にわたって形成しておくこと、ならびに容器本体の円筒状口部内に容器用キャップの円筒状部をはめ入れてその端面を容器本体の環状段部に押し付けた状態で両者を相対回転させて回転摩擦溶接することを特徴とするものである。
【００１５】
請求項６の発明による容器の製造方法によれば、容器本体と容器用キャップとの相対回転時に容器用キャップの円筒状部の端面と容器本体の環状段部との間で発生する溶融かすは、環状溝内に捕捉されてここに滞留するので、得られた容器内部にバリが侵入することはなくなる。したがって、容器内に充填される内容物へのバリの混入が防止され、その結果内容物の品質低下が防止される。しかも、溶融状態のバリが環状溝内を埋めてここで固化するので、容器本体と容器用キャップとの接合強度の向上に寄与する。
【００１６】
請求項７の発明による容器の製造方法は、請求項５または６の発明において、容器本体の円筒状口部の内径が、容器用キャップの円筒状部の外径よりも小さくなされているものである。
【００１７】
請求項８の発明による容器本体は、少なくとも内周面の所定厚さ部分が熱可塑性プラスチックで覆われた円筒状口部を有する容器本体と、少なくとも外周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ容器本体の円筒状口部内にはめ入れられる円筒状部、および円筒状部の外周面に形成されかつ少なくとも表面が所定厚さの熱可塑性プラスチックで覆われた環状段部を有するとともに、容器本体の円筒状口部を閉鎖する容器用キャップとを備えており、容器用キャップの円筒状部が容器本体の円筒状口部内にはめ入れられるとともに、円筒状口部の端面が環状段部に押し付けられた状態で両者が相対回転させられることにより回転摩擦溶接されている容器を製造するのに用いられる容器本体であって、円筒状口部の内周面に、複数の環状溝が全周にわたって形成されているものである。
【００１８】
請求項９の発明による容器本体は、少なくとも内周面の所定厚さ部分が熱可塑性プラスチックで覆われた円筒状口部、および円筒状口部の内周面に形成されかつ少なくとも表面が所定厚さの熱可塑性プラスチックで覆われた環状段部を有する容器本体と、少なくとも外周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ容器本体の円筒状口部内にはめ入れられる円筒状部を有するとともに、容器本体の円筒状口部を閉鎖する容器用キャップとを備えており、容器用キャップの円筒状部が容器本体の円筒状口部内にはめ入れられてその端面が環状段部に押し付けられた状態で両者が相対回転させられることにより回転摩擦溶接されている容器を製造するのに用いられる容器本体であって、円筒状口部の内周面に、複数の環状溝が全周にわたって形成されているものである。
【００１９】
請求項１０の発明による容器本体は、請求項８または９の発明において、環状段部がフランジからなるものである。
【００２０】
請求項１１の発明による容器用キャップは、少なくとも内周面の所定厚さ部分が熱可塑性プラスチックで覆われた円筒状口部を有する容器本体と、少なくとも外周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ容器本体の円筒状口部内にはめ入れられる円筒状部、および円筒状部の外周面に形成されかつ少なくとも表面が所定厚さの熱可塑性プラスチックで覆われた環状段部を有するとともに、容器本体の円筒状口部を閉鎖する容器用キャップとを備えており、容器用キャップの円筒状部が容器本体の円筒状口部内にはめ入れられるとともに、円筒状口部の端面が環状段部に押し付けられた状態で両者が相対回転させられることにより回転摩擦溶接されている容器を製造するのに用いられる容器用キャップであって、円筒状部の外周面に、複数の環状溝が全周にわたって形成されているものである。
【００２１】
請求項１２の発明による容器用キャップは、少なくとも内周面の所定厚さ部分が熱可塑性プラスチックで覆われた円筒状口部、および円筒状口部の内周面に形成されかつ少なくとも表面が所定厚さの熱可塑性プラスチックで覆われた環状段部を有する容器本体と、少なくとも外周面の所定厚さ部分が熱可塑性プラスチックで覆われかつ容器本体の円筒状口部内にはめ入れられる円筒状部を有するとともに、容器本体の円筒状口部を閉鎖する容器用キャップとを備えており、容器用キャップの円筒状部が容器本体の円筒状口部内にはめ入れられてその端面が環状段部に押し付けられた状態で両者が相対回転させられることにより回転摩擦溶接されている容器を製造するのに用いられる容器用キャップであって、円筒状部の外周面に、複数の環状溝が全周にわたって形成されているものである。
【００２２】
請求項１３の発明による容器用キャップは、請求項１１または１２の発明において、環状段部がフランジからなるものである。
【００２３】
【発明の実施形態】
以下、この発明の実施形態を、図面を参照して説明する。なお、以下の説明において、全図面を通じて同一物および同一部分には同一符号を付して重複する説明を省略する。
【００２４】
図１はこの発明の第１の実施形態の方法により製造されたコーキング材充填用押出式容器を示す。
【００２５】
図１において、押出式容器(1)は、熱可塑性プラスチック製円筒胴(2)と、円筒胴(2)の一端に固定され、かつ一端開口を閉鎖する熱可塑性プラスチック製キャップ(3)とからなる。キャップ(3)は、円筒胴(2)の一端開口内にはめ入れられる短円筒状部(4)と、短円筒状部(4)の一端に一体に形成されかつ円筒胴(2)の端面に密接する外向きフランジ(5)と、短円筒状部(4)の一端に一体に形成されかつ短円筒状部(4)の一端開口を閉鎖する円板状部(6)とよりなり、円板状部(6)により円筒胴(2)の開口が閉鎖される。円板状部(6)の中心部に充填物放出口(7)が一体に形成され、ここに充填物放出ノズル(8)がねじ止められている。
【００２６】
このような押出容器(1)は、その内部にペースト状コーキング材（図示略）を充填した後、円筒胴(2)の他端開口側に可動板(9)を、円筒胴(2)の軸線方向に摺動自在にはめ入れて用いられる。
【００２７】
図２〜図４は上述した押出式容器(1)を製造する方法を示しており、図２は円筒胴(2)とキャップ(3)とを組み合わせる前の状態を示し、図３は円筒胴(2)とキャップ(3)とを組み合わせた状態を示し、図４は円筒胴とキャップとを接合した状態を示す。なお、以下の説明において、図２〜図４の上下を上下というものとする。
【００２８】
図２において、円筒胴(2)は、高密度ポリエチレンを用いて押出成形法により一体成形されたものであり、容器用キャップ(3)は、高密度ポリエチレンを用いて射出成形法により一体成形されたものであって、キャップ(3)のメルトインデックスは円筒胴(2)のメルトインデックスよりも大きく、後述する回転摩擦接合の際に円筒胴(2)よりもキャップ(3)側の材料が流れ易くなっている。円筒胴(2)の内径は短円筒状部(4)の外径よりも若干小さくなっている。また、キャップ(3)の短円筒状部(4)の先端部には、外径が円筒胴(2)の内径よりも小さな薄肉部(4a)が一体に形成されている。薄肉部(4a)の外周面と短円筒状部(4)の外周面との間には、上方に向かって径方向外方に傾斜したテーパ面(4b)が形成されている。薄肉部(4a)およびテーパ面(4b)が、キャップ(3)の短円筒状部(4)を円筒胴(2)内にはめ入れる際にガイドの働きをする。また、キャップ(3)における短円筒状部(4)の上端面から外向きフランジ(5)の上面にかけては、周方向に間隔をおいて複数の係合用突起(12)が一体に形成されている。これらの係合用突起(12)は、キャップ(3)の短円筒状部(4)を円筒胴(2)の上端開口内に嵌め入れた後、両者を相対的に回転させるために用いられる。
【００２９】
キャップ(3)の短円筒状部(4)の外周面に複数、ここでは３つの環状溝(10)が、軸線方向（上下方向）に並んで全周にわたって形成されている。下側の２つの環状溝(10)は、その断面形状が正三角形状である。上端の１つの環状溝(10)の断面形状は、他の２つの環状溝(10)の断面形状を水平線により上下に２分割したような直角三角形状である。隣り合う環状溝(10)間の部分は、径方向外方に向かって尖っている。環状溝(10)の容積や、数や、ピッチなどは、回転摩擦溶接の際に発生する溶融かすにより全ての環状溝(10)が完全に埋められるようなものにすることが好ましいが、若干の隙間が存在するようなものであってもよい。たとえば、円筒胴(2)の内径が４０〜６０ｍｍ、肉厚が１〜２ｍｍの場合、環状溝(10)の開口部の幅を０．５〜１．５ｍｍ、深さを０．４〜１．３ｍｍ、ピッチを０．５〜１．５ｍｍとすることが好ましい。また、後述する円筒胴(2)の内側に流れ出す溶融かすの容積が、接合後の環状溝(10)の内容積の９０〜１００％であることが好ましい。
【００３０】
そして、図３に示すように、キャップ(3)の短円筒状部(4)を、円筒胴(2)の上端開口内に強制的にはめ入れ、外向きフランジ(5)の下面を円筒胴(2)の上端面に面接触させる。このとき、隣接する環状溝(10)間の部分はその先端が若干潰れるように変形する。また、下端の環状溝(10)よりも下方の部分もその先端が若干潰れる。これにより、後述する溶融かすが、環状溝(10)内に捕捉され易くなる。
【００３１】
ついで、円筒胴(2)の端面とキャップ(3)の外向きフランジ(5)とを軸線方向に加圧した状態で、円筒胴(2)とキャップ(3)とを相対回転させるという回転摩擦溶接方法により円筒胴(2)とキャップ(3)とを接合する。このとき、円筒胴(2)を下側から上側に向かって所定のストロークだけ上昇させる。これにより、主にキャップ(3)の外向きフランジ(5)の下面および円筒胴(2)の端面から溶融かすが発生して内方に流れるが、図４に示すように、この溶融かすは環状溝(10)に捕捉されてここで固化する。この固化物を(11)で示す。環状溝(10)内は固化物(11)で埋められる。なお、キャップ(3)の外向きフランジ(5)の下面および円筒胴(2)の端面から溶融かすが発生することにより、両者の接合面は径方向外方に向かって上方に傾斜した傾斜面となる。また、円筒胴(2)の上端部は若干径方向外方に膨らむ。最後に、係合用突起(12)と円筒胴(2)上端の膨らみ部(2a)を切削除去する。こうして、押出式容器(1)が製造される。
【００３２】
上述した製造方法において、円筒胴(2)とキャップ(3)とを相対回転させることにより発生する溶融かすは、環状溝(10)に捕捉されてここで固化するので、得られた押出式容器(1)内にバリが侵入することがなくなる。したがって、容器(1)内に充填される内容物へのバリの混入が防止され、その結果内容物の品質低下が防止される。しかも、溶融かすが環状溝(10)内を埋めてここで固化するので、固化物(11)が、円筒胴(2)とキャップ(3)との接合強度の向上に寄与する。
【００３３】
上記実施形態においては、キャップ(3)の短円筒状部(4)の外周面だけに環状溝(1)が形成されているが、これに加えて円筒胴(2)の内周面におけるキャップ(3)の短円筒状部(4)との接触部に、環状溝が全周にわたって形成されていてもよい。
【００３４】
図５はこの発明の第２の実施形態を示す。
【００３５】
この実施形態の場合、容器用キャップ(3)の短円筒状部(4)の外周面に環状溝が形成される代わりに、円筒胴(2)の内周面におけるキャップ(3)の短円筒状部(4)との接触部に複数、ここでは３つの環状溝(10)が全周にわたって形成されている。この実施形態におけるその他の構成は第１の実施形態と同様である。
【００３６】
なお、この実施形態においても、円筒胴(2)内周面の環状溝(10)に加えて、キャップ(3)の短円筒状部(4)の外周面にも環状溝が形成されていてもよい。
【００３７】
図６はこの発明の第３の実施形態を示す。
【００３８】
この場合、円筒胴(2)は、その径方向内側を構成する円筒状内側構成部材(21)と、同じく外側を構成する円筒状外側構成部材(22)とよりなる。内側構成部材(21)は第１の実施形態の円筒胴(2)を形成するのと同様な熱可塑性プラスチックで形成されており、所定の厚さを有している。外側構成部材(22)は、紙、金属または熱硬化性プラスチックや、複合材等の熱可塑性プラスチックと異なる材料で形成されている。
【００３９】
また、容器用キャップ(3)は、短円筒状体(23)と、短円筒状体(23)の上端開口内にはめ止められた円板(24)とよりなる。短円筒状体(23)は第１の実施形態の容器用キャップ(3)を形成するのと同様な熱可塑性プラスチックで形成されている。円板(24)は、紙、金属または熱硬化性プラスチックや、複合材等の熱可塑性プラスチックと異なる材料で形成されている。短円筒状体(23)の上端に外向きフランジ(5)が一体に形成され、短円筒状体(23)の上端面から外向きフランジ(5)の上面にかけて、係合用突起(12)が一体に形成されている。この実施形態におけるその他の構成は第１の実施形態と同様である。
【００４０】
なお、この実施形態において、短円筒状体(23)の環状溝(10)に代えて、あるいはこれに加えて円筒胴(2)の内側構成部材(21)の内周面に環状溝が形成されていてもよい。
【００４１】
図７はこの発明の第４の実施形態を示す。
【００４２】
この場合、容器用キャップ(3)に外向きフランジが形成される代わりに、円筒胴(2)の上端に内向きフランジ(25)が一体に形成されている。また、係合用突起(12)は、容器用キャップ(3)の円板状部(6)の上面における内向きフランジ(25)と干渉しない部分に一体に形成されている。この実施形態におけるその他の構成は第１の実施形態と同様である。
【００４３】
そして、キャップ(3)の短円筒状部(4)を、円筒胴(2)の上端開口内に下方から強制的にはめ入れ、内向きフランジ(25)の下面を容器用キャップ(3)の短円筒状部(5)の上端面に面接触させ、その他は第１の実施形態の場合と同様にして押出式容器(1)を製造する。
【００４４】
図８および図９はこの発明の第５の実施形態を示す。
【００４５】
図８はこの実施形態により製造された容器を示し、図９はその製造方法を示す。
【００４６】
図８において、容器(30)は、有底角筒状でかつ上端に円筒状口部(32)が一体に形成された容器本体(31)と、円筒状口部(32)を閉鎖する容器用キャップ(33)とよりなる。容器本体(31)は第１の実施形態の円筒胴(2)と同様な熱可塑性プラスチックにより形成され、容器用キャップ(33)は第１の実施形態の容器用キャップ(3)と同様な熱可塑性プラスチックにより形成されている。容器用キャップ(33)の円板状部(6)の外周縁部に全周にわたって環状の開口形成用切れ目溝(34)が形成されている。円板状部(6)上面における切れ目溝(34)に囲まれた部分に、プルタブ(35)が一体に形成されている。容器用キャップ(33)のその他の構成は第１の実施形態の容器用キャップ(3)と同様である。また、容器本体(31)の円筒状口部(32)の内径は、容器用キャップ(33)の短円筒状部(4)の外径よりも若干小さくなっている。
【００４７】
そして、図９に示すように、容器用キャップ(33)の短円筒状部(4)を、容器本体(31)の円筒状口部(32)内に強制的にはめ入れ、外向きフランジ(5)の下面を円筒状口部(32)の上端面に面接触させる。その後は、第１の実施形態の場合と同様にして容器を製造する。
【００４８】
なお、この実施形態において、短円筒状部(4)の環状溝(10)に代えて、あるいはこれに加えて円筒状口部(32)の内周面に環状溝が形成されていてもよい。
【図面の簡単な説明】
【図１】 この発明の第１の実施形態の方法で製造された押出式容器を示す中間を省略した一部切り欠き正面図である。
【図２】 第１の実施形態において、円筒胴とキャップとを組み合わせる前の状態を示す部分拡大断面図である。
【図３】 第１の実施形態において、円筒胴とキャップとを組み合わせた状態を示す部分拡大断面図である。
【図４】 第１の実施形態において、円筒胴とキャップとを接合した状態を示す部分拡大断面図である。
【図５】 この発明の第２の実施形態の方法を示す図２相当の図である。
【図６】 この発明の第３の実施形態の方法を示す図２相当の図である。
【図７】 この発明の第４の実施形態の方法を示す図２相当の図である。
【図８】 この発明の第５の実施形態の方法で製造された容器を示す斜視図である。
【図９】 第５の実施形態において、円筒胴とキャップとを組み合わせる前の状態を示す斜視図である。
【符号の説明】
(1)：押出式容器
(2)：円筒胴
(3)：キャップ
(4)：短円筒状部
(5)：外向きフランジ
(10)：環状溝
(21)：内側構成部材
(22)：外側構成部材
(23)：短円筒状体
(24)：円板
(25)：内向きフランジ
(30)：容器
(31)：容器本体
(32)：円筒状口部
(33)：容器用キャップ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary friction welding method, a welded part used for carrying out the method, a container manufacturing method, a container main body and a container cap used for container manufacturing.
[0002]
[Prior art]
For example, as an extrusion container filled with a paste-like caulking material, a thermoplastic cylinder, a short cylindrical part fitted into one end opening of the cylindrical cylinder, and one end of the short cylindrical part are integrally formed and 2. Description of the Related Art There is known a thermoplastic cap that has an outward flange in close contact with the end surface of a cylindrical body and closes one end opening of the cylindrical body.
[0003]
Such an extruded container for filling a caulking material is conventionally in a state in which the short cylindrical portion of the cap is fitted into one end opening of the cylindrical body, and the end surface of the cylindrical body and the outward flange of the cap are pressurized in the axial direction. The cylindrical body and the cap are manufactured by joining the cylindrical body and the cap by a rotational friction welding method in which the cylindrical body and the cap are relatively rotated.
[0004]
[Problems to be solved by the invention]
However, according to the conventional manufacturing method, molten debris mainly generated between the end surface of the cylindrical body and the outward flange of the cap is penetrated into the inside through a gap generated between the cylindrical cylinder and the cap during relative rotation. Then, it solidifies and becomes a burr. By the way, it is extremely difficult to remove the burrs that have entered and solidified into the manufactured container, so that burrs remain in the container. Therefore, there is a problem that burrs are mixed in the caulking material filled in the container, and the quality of the caulking material is deteriorated.
[0005]
The object of the present invention is to solve the above-mentioned problems, and to provide a rotational friction welding method in which burrs do not penetrate into the obtained container, and parts to be welded used in the implementation of the method, a container manufacturing method, a container An object of the present invention is to provide a container body and a container cap used for manufacturing.
[0006]
[Means for Solving the Problems and Effects of the Invention]
According to a first aspect of the present invention, there is provided a rotary friction welding method comprising: a first welded part having a cylindrical portion having at least a predetermined thickness portion of an inner peripheral surface covered with a thermoplastic and having an open end; A cylindrical part whose predetermined thickness is covered with a thermoplastic and fitted into the cylindrical part of the first welded part, and a thermoplastic having at least a predetermined thickness formed on the outer peripheral surface of the cylindrical part A second welded part having an annular step portion covered with an inner peripheral surface of the cylindrical part of the first welded part and an outer peripheral surface of the cylindrical part of the second welded part. A plurality of annular grooves are formed on at least one of the entire circumference, and the cylindrical part of the second welded part is inserted into the cylindrical part of the first welded part, and the cylinder of the first welded part Part It is characterized in that bonding the face second by relatively rotating the two welded parts pressed against axially annular step of the weld-in part.
[0007]
According to the rotary friction welding method of the invention of claim 1, the molten debris generated between the end surface of the first welded part and the annular stepped portion of the second welded part at the time of relative rotation of the two welded parts, Since it is trapped in the annular groove and stays there, no burrs enter the resulting product. And since the burr | flash of a molten state fills the inside of an annular groove and solidifies here, it contributes to the improvement of the joint strength of two to-be-welded components.
[0008]
According to a second aspect of the present invention, there is provided a rotational friction method according to the first aspect, wherein the first welded part is a cylindrical body having a cylindrical shape over the entire length, and the second welded part is fitted into one end opening of the cylindrical cylinder. The cap has a short cylindrical portion to be inserted and closes one end opening of the cylindrical body, and the annular step portion is a flange formed in the second welded part .
[0009]
According to a third aspect of the present invention , there is provided a rotary friction welding method in which at least a predetermined thickness portion of the inner peripheral surface is covered with a thermoplastic and the tip is open, and the inner peripheral surface of the cylindrical portion is formed at least. A first welded part having an annular step portion whose surface is covered with a thermoplastic material having a predetermined thickness, and a cylindrical shape of the first welded part, wherein at least a predetermined thickness portion of the outer peripheral surface is covered with the thermoplastic material. Preparing a second welded part having a cylindrical part to be fitted in the part, a first to-be-welded part is a cylindrical body having a cylindrical shape over the entire length, and the second to-be-welded part is one end of the cylindrical body a cap for closing one end opening of the cylindrical barrel and having a short cylindrical portion which is fitted into the opening, it is flange annular stepped portion is formed on the first welded part, the cylinder of the first welded part Forming a plurality of annular grooves over the entire circumference on at least one of the inner peripheral surface of the part and the outer peripheral surface of the cylindrical part of the second welded part, and the cylindrical part of the second welded part While fitting into the cylindrical part of the first welded part, the two welded parts are moved relative to each other with the end face of the cylindrical part of the second welded part pressed against the annular stepped part of the first welded part in the axial direction. It is characterized by being joined by rotating.
[0010]
According to the rotary friction welding method of the invention of
[0011]
Rotational friction welding method according to the invention of
[0012]
According to a fifth aspect of the present invention, there is provided a container manufacturing method comprising: a container main body having a cylindrical mouth portion in which at least a predetermined thickness portion of the inner peripheral surface is covered with thermoplastic; and at least a predetermined thickness portion of the outer peripheral surface being thermoplastic. A cylindrical portion that is covered with plastic and is fitted into the cylindrical mouth portion of the container body, and an annular step portion that is formed on the outer peripheral surface of the cylindrical portion and at least the surface is covered with a thermoplastic resin having a predetermined thickness. And a container cap for closing the cylindrical mouth portion of the container main body, and at least one of the inner peripheral surface of the cylindrical mouth portion of the container main body and the outer peripheral surface of the cylindrical portion of the container cap. A plurality of annular grooves are formed over the entire circumference, and the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container body, and the end of the cylindrical mouth portion of the container body is The is characterized in that the rotating friction welding by relatively rotating the two in a state pressed against the annular step portion of the container cap.
[0013]
According to the container manufacturing method of the fifth aspect of the present invention, molten debris generated between the end surface of the cylindrical mouth portion of the container body and the annular step portion of the container cap at the time of relative rotation between the container body and the container cap. Is trapped in the annular groove and stays there, so that no burrs enter the obtained container. Therefore, the entry of burrs into the contents filled in the container is prevented, and as a result, the quality of the contents is prevented from deteriorating. Moreover, since the molten burr fills the inside of the annular groove and solidifies here, it contributes to an improvement in the bonding strength between the container body and the container cap.
[0014]
According to a sixth aspect of the present invention, there is provided a container manufacturing method comprising: a cylindrical mouth portion in which at least a predetermined thickness portion of the inner peripheral surface is covered with a thermoplastic plastic; and an inner peripheral surface of the cylindrical mouth portion, and at least a surface thereof. A container main body having an annular step portion covered with a thermoplastic resin having a predetermined thickness, and a cylindrical portion at least a predetermined thickness portion of the outer peripheral surface of which is covered with a thermoplastic plastic and fitted into a cylindrical mouth portion of the container main body. A container cap for closing the cylindrical mouth portion of the container body, and at least one of the inner peripheral surface of the cylindrical mouth portion of the container body and the outer peripheral surface of the cylindrical portion of the container cap On the other hand, a plurality of annular grooves are formed over the entire circumference, and the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container body, and the end surface thereof is pushed onto the annular step portion of the container body. Is characterized in that the relatively rotating both in attaching state to rotational friction welding.
[0015]
According to the container manufacturing method of the sixth aspect of the invention, the molten debris generated between the end surface of the cylindrical portion of the container cap and the annular stepped portion of the container main body at the time of relative rotation between the container main body and the container cap. Since it is trapped in the annular groove and stays there, no burrs enter the obtained container. Therefore, the entry of burrs into the contents filled in the container is prevented, and as a result, the quality of the contents is prevented from deteriorating. Moreover, since the molten burr fills the inside of the annular groove and solidifies here, it contributes to an improvement in the bonding strength between the container body and the container cap.
[0016]
According to a seventh aspect of the present invention, there is provided a container manufacturing method according to the fifth or sixth aspect, wherein the inner diameter of the cylindrical mouth portion of the container body is smaller than the outer diameter of the cylindrical portion of the container cap. is there.
[0017]
A container main body according to an eighth aspect of the present invention includes a container main body having a cylindrical mouth portion in which at least a predetermined thickness portion of the inner peripheral surface is covered with thermoplastic, and at least a predetermined thickness portion of the outer peripheral surface is made of thermoplastic plastic. A cylindrical portion that is covered and fitted into the cylindrical mouth portion of the container body, and an annular step portion that is formed on the outer peripheral surface of the cylindrical portion and at least the surface is covered with a predetermined thickness of thermoplastic, A container cap for closing the cylindrical mouth portion of the container body, the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container body, and the end surface of the cylindrical mouth portion is an annular stepped portion. both in pressed against the state is a container main body used to produce the container is rotated friction welding by being rotated relative to the inner peripheral surface of the cylindrical mouth portion, a plurality of Shaped groove is being formed over the entire circumference.
[0018]
The container body according to the invention of
[0019]
The container body according to the invention of
[0020]
The container cap according to the invention of claim 11 has a container body having a cylindrical mouth portion in which at least a predetermined thickness portion of the inner peripheral surface is covered with a thermoplastic, and at least a predetermined thickness portion of the outer peripheral surface. A cylindrical portion that is covered with a cylindrical mouth portion of the container body, and an annular step portion that is formed on the outer peripheral surface of the cylindrical portion and is covered with a thermoplastic resin having a predetermined thickness. A container cap for closing the cylindrical mouth portion of the container body, the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container body, and the end surface of the cylindrical mouth portion is an annular step. both in a state of being pressed against the part is a container cap used to produce the container is rotated friction welding by being rotated relative to, the outer periphery of the cylindrical portion The one in which a plurality of annular grooves are formed over the entire circumference.
[0021]
A container cap according to a twelfth aspect of the present invention is formed in a cylindrical mouth portion in which at least a predetermined thickness portion of the inner peripheral surface is covered with a thermoplastic, and an inner peripheral surface of the cylindrical mouth portion, and at least the surface is predetermined. A container main body having an annular step portion covered with a thickness of thermoplastic, and a cylindrical portion at least a predetermined thickness portion of the outer peripheral surface of which is covered with the thermoplastic plastic and is fitted into the cylindrical mouth of the container main body. And a container cap for closing the cylindrical mouth portion of the container body, the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container body, and its end surface is pressed against the annular stepped portion. both in was state a container cap used to produce the container is rotated friction welding by being rotated relative to the outer peripheral surface of the cylindrical portion, a plurality of annular There are those formed over the entire circumference.
[0022]
According to a thirteenth aspect of the present invention, in the container cap according to the eleventh or twelfth aspect, the annular step portion is formed of a flange.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same components and the same parts are denoted by the same reference symbols throughout the drawings, and redundant descriptions are omitted.
[0024]
FIG. 1 shows an extrusion container for filling a caulking material manufactured by the method of the first embodiment of the present invention.
[0025]
In FIG. 1, an extrusion container (1) is composed of a thermoplastic cylinder (2) and a thermoplastic cap (3) fixed to one end of the cylinder (2) and closing one end opening. Become. The cap (3) is formed integrally with one end of the short cylindrical portion (4) and the short cylindrical portion (4) fitted into the opening of the cylindrical barrel (2), and the end surface of the cylindrical barrel (2). And an outward flange (5) that is in close contact with a disk-shaped part (6) that is integrally formed at one end of the short cylindrical part (4) and closes one end opening of the short cylindrical part (4), The opening of the cylindrical body (2) is closed by the disc-shaped part (6). A filler discharge port (7) is integrally formed at the center of the disc-shaped portion (6), and the filler discharge nozzle (8) is screwed thereto.
[0026]
Such an extrusion container (1) is filled with a paste-like caulking material (not shown), and a movable plate (9) is placed on the other end opening side of the cylindrical cylinder (2). It is used by being slidable in the axial direction.
[0027]
2 to 4 show a method of manufacturing the above-described extrusion type container (1), FIG. 2 shows a state before the cylindrical body (2) and the cap (3) are combined, and FIG. 3 shows the cylindrical body. FIG. 4 shows a state in which (2) and the cap (3) are combined, and FIG. 4 shows a state in which the cylindrical body and the cap are joined. In the following description, the top and bottom of FIGS.
[0028]
In FIG. 2, the cylindrical body (2) is integrally formed by extrusion molding using high density polyethylene, and the container cap (3) is integrally molded by injection molding using high density polyethylene. The melt index of the cap (3) is larger than the melt index of the cylindrical cylinder (2), and the material on the cap (3) side flows from the cylindrical cylinder (2) during the rotational friction welding described later. It is easy. The inner diameter of the cylindrical body (2) is slightly smaller than the outer diameter of the short cylindrical part (4). A thin-walled portion (4a) whose outer diameter is smaller than the inner diameter of the cylindrical body (2) is integrally formed at the tip of the short cylindrical portion (4) of the cap (3). Between the outer peripheral surface of the thin-walled portion (4a) and the outer peripheral surface of the short cylindrical portion (4), a tapered surface (4b) inclined radially outwardly upward is formed. The thin portion (4a) and the tapered surface (4b) serve as a guide when the short cylindrical portion (4) of the cap (3) is fitted into the cylindrical body (2). In addition, a plurality of engaging projections (12) are integrally formed at intervals in the circumferential direction from the upper end surface of the short cylindrical portion (4) in the cap (3) to the upper surface of the outward flange (5). Yes. These engaging projections (12) are used to relatively rotate both the short cylindrical portion (4) of the cap (3) after fitting into the upper end opening of the cylindrical body (2).
[0029]
A plurality, here, three annular grooves (10) are formed on the outer peripheral surface of the short cylindrical portion (4) of the cap (3) along the axial direction (vertical direction) over the entire circumference. The two lower annular grooves (10) have a regular triangular cross section. The cross-sectional shape of one annular groove (10) at the upper end is a right triangle shape obtained by dividing the cross-sectional shape of the other two annular grooves (10) into two vertically by a horizontal line. A portion between adjacent annular grooves (10) is pointed outward in the radial direction. The volume, number, pitch, etc. of the annular groove (10) are preferably such that all the annular groove (10) is completely filled with molten debris generated during rotary friction welding, Such a gap may exist. For example, when the inner diameter of the cylindrical body (2) is 40 to 60 mm and the wall thickness is 1 to 2 mm, the width of the opening of the annular groove (10) is 0.5 to 1.5 mm and the depth is 0.4 to 1. .3 mm and the pitch is preferably 0.5 to 1.5 mm. Moreover, it is preferable that the volume of the molten debris flowing out to the inside of the cylindrical body (2) described later is 90 to 100% of the inner volume of the annular groove (10) after joining.
[0030]
Then, as shown in FIG. 3, the short cylindrical portion (4) of the cap (3) is forcibly inserted into the upper end opening of the cylindrical body (2), and the lower surface of the outward flange (5) is connected to the cylindrical body. Surface contact with the upper end surface of (2). At this time, the portion between the adjacent annular grooves (10) is deformed so that the tip thereof is slightly crushed. Further, the tip of the lower portion of the annular groove (10) at the lower end is slightly crushed. As a result, molten debris described later is easily trapped in the annular groove (10).
[0031]
Next, rotational friction in which the cylindrical body (2) and the cap (3) are rotated relative to each other while the end face of the cylindrical body (2) and the outward flange (5) of the cap (3) are pressurized in the axial direction. The cylindrical body (2) and the cap (3) are joined by a welding method. At this time, the cylindrical body (2) is raised by a predetermined stroke from the lower side toward the upper side. As a result, melted debris is generated from the lower surface of the outward flange (5) of the cap (3) and the end surface of the cylindrical body (2) and flows inward. As shown in FIG. It is trapped in the groove (10) and solidifies here. This solidified product is indicated by (11). The inside of the annular groove (10) is filled with the solidified material (11). In addition, due to the occurrence of molten debris from the lower surface of the outward flange (5) of the cap (3) and the end surface of the cylindrical body (2), the joint surface between the two is an inclined surface inclined upward in the radial direction outward. Become. Further, the upper end portion of the cylindrical body (2) swells slightly outward in the radial direction. Finally, the engagement protrusion (12) and the bulging portion (2a) at the upper end of the cylindrical body (2) are removed by cutting. In this way, the extrusion container (1) is manufactured.
[0032]
In the manufacturing method described above, the molten debris generated by relative rotation of the cylindrical body (2) and the cap (3) is trapped in the annular groove (10) and solidifies there, so that the obtained extrusion type container (1) No burrs will enter. Therefore, the entry of burrs into the contents filled in the container (1) is prevented, and as a result, the quality of the contents is prevented from deteriorating. Moreover, since the molten waste fills the annular groove (10) and solidifies here, the solidified product (11) contributes to an improvement in the bonding strength between the cylindrical body (2) and the cap (3).
[0033]
In the above embodiment, the annular groove (1) is formed only on the outer peripheral surface of the short cylindrical portion (4) of the cap (3), but in addition to this, the cap on the inner peripheral surface of the cylindrical body (2) An annular groove may be formed over the entire circumference in the contact portion with the short cylindrical portion (4) of (3).
[0034]
FIG. 5 shows a second embodiment of the present invention.
[0035]
In the case of this embodiment, instead of forming an annular groove on the outer peripheral surface of the short cylindrical portion (4) of the container cap (3), the short cylinder of the cap (3) on the inner peripheral surface of the cylindrical body (2) A plurality of, here three, annular grooves (10) are formed over the entire circumference at the contact portion with the shape portion (4). Other configurations in this embodiment are the same as those in the first embodiment.
[0036]
In this embodiment, in addition to the annular groove (10) on the inner peripheral surface of the cylindrical body (2), an annular groove is also formed on the outer peripheral surface of the short cylindrical portion (4) of the cap (3). Also good.
[0037]
FIG. 6 shows a third embodiment of the present invention.
[0038]
In this case, the cylindrical body (2) is composed of a cylindrical inner constituent member (21) constituting the radially inner side thereof and a cylindrical outer constituent member (22) also constituting the outer side. The inner component member (21) is formed of the same thermoplastic as that forming the cylindrical body (2) of the first embodiment, and has a predetermined thickness. The outer component member (22) is made of a material different from thermoplastics such as paper, metal, thermosetting plastic, or composite material.
[0039]
Further, the container cap (3) includes a short cylindrical body (23) and a disc (24) that is fixed in the upper end opening of the short cylindrical body (23). The short cylindrical body (23) is formed of the same thermoplastic as that for forming the container cap (3) of the first embodiment. The disc (24) is made of a material different from thermoplastics such as paper, metal, thermosetting plastic, or composite material. An outward flange (5) is integrally formed at the upper end of the short cylindrical body (23), and an engagement protrusion (12) is formed from the upper end surface of the short cylindrical body (23) to the upper surface of the outward flange (5). It is integrally formed. Other configurations in this embodiment are the same as those in the first embodiment.
[0040]
In this embodiment, instead of or in addition to the annular groove (10) of the short cylindrical body (23), an annular groove is formed on the inner peripheral surface of the inner structural member (21) of the cylindrical body (2). May be.
[0041]
FIG. 7 shows a fourth embodiment of the present invention.
[0042]
In this case, instead of forming an outward flange on the container cap (3), an inward flange (25) is integrally formed at the upper end of the cylindrical body (2). Further, the engaging protrusion (12) is integrally formed on a portion of the upper surface of the disk-like portion (6) of the container cap (3) that does not interfere with the inward flange (25). Other configurations in this embodiment are the same as those in the first embodiment.
[0043]
Then, the short cylindrical portion (4) of the cap (3) is forcibly fitted into the upper end opening of the cylindrical body (2) from below, and the lower surface of the inward flange (25) is placed on the container cap (3). The extrusion container (1) is manufactured in the same manner as in the first embodiment except that the upper end surface of the short cylindrical portion (5) is brought into surface contact.
[0044]
8 and 9 show a fifth embodiment of the present invention.
[0045]
FIG. 8 shows a container manufactured according to this embodiment, and FIG. 9 shows the manufacturing method.
[0046]
In FIG. 8, a container (30) has a bottomed rectangular tube shape and a container body (31) integrally formed with a cylindrical mouth part (32) at the upper end, and a container for closing the cylindrical mouth part (32). And a cap (33). The container main body (31) is made of the same thermoplastic as the cylindrical body (2) of the first embodiment, and the container cap (33) has the same heat as the container cap (3) of the first embodiment. It is made of plastic. An annular opening forming cut groove (34) is formed over the entire circumference on the outer peripheral edge of the disc-like portion (6) of the container cap (33). A pull tab (35) is integrally formed in a portion surrounded by the cut groove (34) on the upper surface of the disk-like portion (6). Other configurations of the container cap (33) are the same as those of the container cap (3) of the first embodiment. The inner diameter of the cylindrical mouth portion (32) of the container body (31) is slightly smaller than the outer diameter of the short cylindrical portion (4) of the container cap (33).
[0047]
Then, as shown in FIG. 9, the short cylindrical part (4) of the container cap (33) is forcibly inserted into the cylindrical mouth part (32) of the container main body (31), and the outward flange ( The lower surface of 5) is brought into surface contact with the upper end surface of the cylindrical mouth portion (32). Thereafter, the container is manufactured in the same manner as in the first embodiment.
[0048]
In this embodiment, instead of or in addition to the annular groove (10) of the short cylindrical portion (4), an annular groove may be formed on the inner peripheral surface of the cylindrical mouth portion (32). .
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a partially cutaway front view of an extrusion type container manufactured by a method according to a first embodiment of the present invention, with a middle portion omitted.
FIG. 2 is a partially enlarged cross-sectional view showing a state before a cylindrical body and a cap are combined in the first embodiment.
FIG. 3 is a partially enlarged cross-sectional view showing a state in which a cylindrical body and a cap are combined in the first embodiment.
FIG. 4 is a partially enlarged cross-sectional view showing a state in which a cylindrical body and a cap are joined in the first embodiment.
FIG. 5 is a view corresponding to FIG. 2 and showing the method of the second embodiment of the present invention.
FIG. 6 is a view corresponding to FIG. 2 and showing a method according to a third embodiment of the present invention.
FIG. 7 is a view corresponding to FIG. 2 and showing a method according to a fourth embodiment of the present invention.
FIG. 8 is a perspective view showing a container manufactured by the method according to the fifth embodiment of the present invention.
FIG. 9 is a perspective view showing a state before a cylindrical body and a cap are combined in the fifth embodiment.
[Explanation of symbols]
(1): Extruded container
(2): Cylindrical body
(3): Cap
(4): Short cylindrical part
(5): outward flange
(10): Annular groove
(21): Inside component
(22): Outside component
(23): Short cylindrical body
(24): Disc
(25): Inward flange
(30): Container
(31): Container body
(32): Cylindrical mouth
(33): Cap for container
Claims (13)
第１被溶接部品の円筒状部の内周面および第２被溶接部品の円筒状部の外周面のうちの少なくともいずれか一方に、複数の環状溝を全周にわたって形成すること、
ならびに第２被溶接部品の円筒状部を第１被溶接部品の円筒状部内にはめ入れるとともに、第１被溶接部品の円筒状部の端面を第２被溶接部品の環状段部に軸線方向に押し付けた状態で２つの被溶接部品を相対回転させて接合することを特徴とする回転摩擦溶接方法。A first welded part having a cylindrical portion at least having a predetermined thickness on the inner peripheral surface covered with a thermoplastic and having an open end; and at least a predetermined thickness on the outer peripheral surface being covered with the thermoplastic; A second cylindrical portion that is fitted into the cylindrical portion of the first welded part, and an annular step portion that is formed on the outer peripheral surface of the cylindrical portion and that is covered at least on the surface with a thermoplastic resin having a predetermined thickness. Preparing the parts to be welded,
Forming a plurality of annular grooves over the entire circumference in at least one of the inner peripheral surface of the cylindrical part of the first welded part and the outer peripheral surface of the cylindrical part of the second welded part;
In addition, the cylindrical part of the second welded part is fitted into the cylindrical part of the first welded part, and the end surface of the cylindrical part of the first welded part is axially connected to the annular step part of the second welded part. A rotary friction welding method, wherein two welding parts are relatively rotated and joined in a pressed state.
第１被溶接部品が全長にわたって円筒状となされた円筒胴であり、第２被溶接部品が円筒胴の一端開口内にはめ入れられる短円筒状部を有するとともに円筒胴の一端開口を閉鎖するキャップであり、環状段部が第１被溶接部品に形成されたフランジであること、
第１被溶接部品の円筒状部の内周面および第２被溶接部品の円筒状部の外周面のうちの少なくともいずれか一方に、複数の環状溝を全周にわたって形成すること、
ならびに第２被溶接部品の円筒状部を第１被溶接部品の円筒状部内にはめ入れるとともに、第２被溶接部品の円筒状部の端面を第１被溶接部品の環状段部に軸線方向に押し付けた状態で２つの被溶接部品を相対回転させて接合することを特徴とする回転摩擦溶接方法。 At least a predetermined thickness portion of the inner peripheral surface is covered with a thermoplastic and the tip is open, and an inner peripheral surface of the cylindrical portion is formed, and at least the surface is covered with a predetermined thickness of thermoplastic. A first welded part having an annular step, and a second part having a cylindrical part in which at least a predetermined thickness portion of the outer peripheral surface is covered with a thermoplastic and fitted into the cylindrical part of the first welded part. Preparing the parts to be welded,
The first welded part is a cylindrical body having a cylindrical shape over its entire length, and the second welded part has a short cylindrical part fitted into one end opening of the cylindrical body and closes the one end opening of the cylindrical body The annular step is a flange formed on the first welded part,
Forming a plurality of annular grooves over the entire circumference in at least one of the inner peripheral surface of the cylindrical part of the first welded part and the outer peripheral surface of the cylindrical part of the second welded part;
In addition, the cylindrical part of the second welded part is fitted into the cylindrical part of the first welded part, and the end surface of the cylindrical part of the second welded part is axially connected to the annular step part of the first welded part. A rotary friction welding method, wherein two welding parts are relatively rotated and joined in a pressed state .
容器本体の円筒状口部の内周面および容器用キャップの円筒状部の外周面の内少なくともいずれか一方に、複数の環状溝を全周にわたって形成しておくこと、
ならびに容器本体の円筒状口部内に容器用キャップの円筒状部をはめ入れるとともに、容器本体の円筒状口部の端面を容器用キャップの環状段部に押し付けた状態で両者を相対回転させて回転摩擦溶接することを特徴とする容器の製造方法。A container body having a cylindrical mouth portion, at least a predetermined thickness portion of the inner peripheral surface is covered with a thermoplastic, and at least a predetermined thickness portion of the outer peripheral surface is covered with a thermoplastic material, and is inside the cylindrical mouth portion of the container body A cylindrical portion to be fitted, and an annular step portion formed on the outer peripheral surface of the cylindrical portion and having at least a surface covered with a thermoplastic resin having a predetermined thickness, and closing the cylindrical mouth portion of the container body Preparing a container cap,
Forming a plurality of annular grooves over the entire circumference in at least one of the inner peripheral surface of the cylindrical mouth portion of the container body and the outer peripheral surface of the cylindrical portion of the container cap;
And a cylindrical mouth portion of the container body with fitted into the cylindrical portion of the container cap, and the two end faces of the cylindrical mouth portion of the container body in a state pressed against the annular step portion of the container cap rotated relative rotation A method for producing a container, characterized by friction welding .
容器本体の円筒状口部の内周面および容器用キャップの円筒状部の外周面の内少なくともいずれか一方に、複数の環状溝を全周にわたって形成しておくこと、
ならびに容器本体の円筒状口部内に容器用キャップの円筒状部をはめ入れてその端面を容器本体の環状段部に押し付けた状態で両者を相対回転させて回転摩擦溶接することを特徴とする容器の製造方法。A cylindrical mouth portion in which at least a predetermined thickness portion of the inner peripheral surface is covered with thermoplastic, and an annular shape formed on the inner peripheral surface of the cylindrical mouth portion and at least the surface is covered with thermoplastic resin of a predetermined thickness A container body having a stepped portion, a cylindrical portion at least having a predetermined thickness on the outer peripheral surface covered with a thermoplastic and fitted into the cylindrical mouth portion of the container body, and the cylindrical mouth portion of the container body Providing a container cap to be closed;
Forming a plurality of annular grooves over the entire circumference in at least one of the inner peripheral surface of the cylindrical mouth portion of the container body and the outer peripheral surface of the cylindrical portion of the container cap;
In addition, the container is characterized in that the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container body, and the end surface of the container cap is pressed against the annular stepped portion of the container body, and the two are rotated relative to each other for rotational friction welding. Manufacturing method.
円筒状口部の内周面に、複数の環状溝が全周にわたって形成されている容器本体。A container body having a cylindrical mouth portion, at least a predetermined thickness portion of the inner peripheral surface is covered with a thermoplastic, and at least a predetermined thickness portion of the outer peripheral surface is covered with a thermoplastic material, and is inside the cylindrical mouth portion of the container body A cylindrical portion to be fitted, and an annular step portion formed on the outer peripheral surface of the cylindrical portion and having at least a surface covered with a thermoplastic resin having a predetermined thickness, and closing the cylindrical mouth portion of the container body A container cap, and the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container body, and the two end surfaces rotate relative to each other while the end surface of the cylindrical mouth portion is pressed against the annular stepped portion. A container body used to produce a container that is rotationally friction welded by
A container body in which a plurality of annular grooves are formed over the entire circumference on the inner peripheral surface of the cylindrical mouth portion.
円筒状口部の内周面に、複数の環状溝が全周にわたって形成されている容器本体。A cylindrical mouth portion in which at least a predetermined thickness portion of the inner peripheral surface is covered with thermoplastic, and an annular shape formed on the inner peripheral surface of the cylindrical mouth portion and at least the surface is covered with thermoplastic resin of a predetermined thickness A container body having a stepped portion, a cylindrical portion at least having a predetermined thickness on the outer peripheral surface covered with a thermoplastic and fitted into the cylindrical mouth portion of the container body, and the cylindrical mouth portion of the container body A container cap to be closed, and the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container main body and the end surface is pressed against the annular stepped portion, and the two are rotated relative to each other. A container body used to produce a container which is rotationally friction welded by
A container body in which a plurality of annular grooves are formed over the entire circumference on the inner peripheral surface of the cylindrical mouth portion.
円筒状部の外周面に、複数の環状溝が全周にわたって形成されている容器用キャップ。A container body having a cylindrical mouth portion, at least a predetermined thickness portion of the inner peripheral surface is covered with a thermoplastic, and at least a predetermined thickness portion of the outer peripheral surface is covered with a thermoplastic material, and is inside the cylindrical mouth portion of the container body A cylindrical portion to be fitted, and an annular step portion formed on the outer peripheral surface of the cylindrical portion and having at least a surface covered with a thermoplastic resin having a predetermined thickness, and closing the cylindrical mouth portion of the container body A container cap, and the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container body, and the two end surfaces rotate relative to each other while the end surface of the cylindrical mouth portion is pressed against the annular stepped portion. A container cap used to produce a container that is rotationally friction welded by
A container cap in which a plurality of annular grooves are formed on the outer peripheral surface of the cylindrical portion over the entire circumference.
円筒状部の外周面に、複数の環状溝が全周にわたって形成されている容器用キャップ。A cylindrical mouth portion in which at least a predetermined thickness portion of the inner peripheral surface is covered with thermoplastic, and an annular shape formed on the inner peripheral surface of the cylindrical mouth portion and at least the surface is covered with thermoplastic resin of a predetermined thickness A container body having a stepped portion, a cylindrical portion at least having a predetermined thickness on the outer peripheral surface covered with a thermoplastic and fitted into the cylindrical mouth portion of the container body, and the cylindrical mouth portion of the container body A container cap to be closed, and the cylindrical portion of the container cap is fitted into the cylindrical mouth portion of the container main body and the end surface is pressed against the annular stepped portion, and the two are rotated relative to each other. A container cap used to produce a container that is rotationally friction welded by
A container cap in which a plurality of annular grooves are formed on the outer peripheral surface of the cylindrical portion over the entire circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000142632A JP4505945B2 (en) | 2000-05-16 | 2000-05-16 | Rotational friction welding method and parts to be welded, container manufacturing method, container body and container cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000142632A JP4505945B2 (en) | 2000-05-16 | 2000-05-16 | Rotational friction welding method and parts to be welded, container manufacturing method, container body and container cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001322172A JP2001322172A (en) | 2001-11-20 |
| JP4505945B2 true JP4505945B2 (en) | 2010-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000142632A Expired - Fee Related JP4505945B2 (en) | 2000-05-16 | 2000-05-16 | Rotational friction welding method and parts to be welded, container manufacturing method, container body and container cap |
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| JP (1) | JP4505945B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4982429B2 (en) * | 2008-05-23 | 2012-07-25 | 日立オートモティブシステムズ株式会社 | Disc brake |
| DE102009039492A1 (en) | 2009-08-31 | 2011-03-03 | Volkswagen Ag | Closure section for container in vehicle i.e. motor vehicle, has flange connected with lateral surface of section by outside end, where flange includes centering aid and welding rib at internal end and joining area, respectively |
| JP6548926B2 (en) * | 2015-03-24 | 2019-07-24 | タキロンシーアイ株式会社 | Method of closing an opening formed in a structure using a closure cap |
| DE102018117370A1 (en) * | 2018-07-18 | 2020-01-23 | Ejot Gmbh & Co. Kg | Connecting element and method for introducing a connecting element |
| US11383519B2 (en) * | 2019-03-27 | 2022-07-12 | Canon Kabushiki Kaisha | Liquid storage bottle and method of manufacturing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6252057A (en) * | 1985-04-29 | 1987-03-06 | シーエムビー フードキャン ピーエルシー | Vessel with cover and manufacture thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57196652U (en) * | 1981-06-05 | 1982-12-13 | ||
| JPS596683U (en) * | 1982-07-05 | 1984-01-17 | ヤコ−通信工業株式会社 | Connection structure with synthetic resin pipe |
| JPS61192A (en) * | 1984-05-30 | 1986-01-06 | 株式会社イノアックコーポレーション | Method of sealing fill opening of plastic vessel |
| JPS62248623A (en) * | 1986-04-21 | 1987-10-29 | Molten Corp | Joining method for thermoplastic pipes having diameters different from each other |
| US4997500A (en) * | 1989-08-28 | 1991-03-05 | At&T Bell Laboratories | Method for joining thermoplastic parts |
| JP3091609B2 (en) * | 1993-09-02 | 2000-09-25 | 押尾産業株式会社 | Container manufacturing method |
| JP3403050B2 (en) * | 1997-05-26 | 2003-05-06 | 小島プレス工業株式会社 | Resin reservoir tank and method of manufacturing the same |
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2000
- 2000-05-16 JP JP2000142632A patent/JP4505945B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6252057A (en) * | 1985-04-29 | 1987-03-06 | シーエムビー フードキャン ピーエルシー | Vessel with cover and manufacture thereof |
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| Publication number | Publication date |
|---|---|
| JP2001322172A (en) | 2001-11-20 |
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