JP3876337B2 - Float manufacturing apparatus and float manufacturing method in vaporizer - Google Patents

Float manufacturing apparatus and float manufacturing method in vaporizer Download PDF

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JP3876337B2
JP3876337B2 JP2002000441A JP2002000441A JP3876337B2 JP 3876337 B2 JP3876337 B2 JP 3876337B2 JP 2002000441 A JP2002000441 A JP 2002000441A JP 2002000441 A JP2002000441 A JP 2002000441A JP 3876337 B2 JP3876337 B2 JP 3876337B2
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jig
float member
outer peripheral
float
rib
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JP2003200500A (en
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明 赤羽根
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Keihin Corp
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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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C66/1142—Single butt to 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
    • B29C66/50—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
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove

Description

【０００１】
【産業上の利用分野】
本発明は、合成樹脂材料によって形成され、中空体をなすフロートであって、該フロートが素材の状態において有底カップ状を成して２個用意され、それらが熱溶着によって固着されるフロートに関し、かかるフロートは、内燃機関に供給される混合気の量及び濃度を調整制御する気化器の浮室内に一定燃料液面を形成する定液面制御装置に用いられる。
【０００２】
【従来の技術】
気化器に用いられるフロートＦは図１２に示される。
１は合成樹脂材料によって形成され、図１２において左方に向かって開口端部１Ａが形成される有底カップ状をなす第１フロート部材である。
２は合成樹脂材料によって形成され、図１２において右方に向かって開口端部２Ａが形成される有底カップ状をなす第２フロート部材であり、その外周壁２Ｂには開口方向に略直交する鍔状の波立ち防止リブ２Ｃが全周の側方に向かって突出して形成される。
かかる第２フロート部材２の波立ち防止リブ２Ｃは、フロートＦが気化器の浮子室内に配置された際、浮子室内に形成される燃料液面の波立ち防止、あるいはフロートＦの剛性を上げる際、等において形成される。
【０００３】
そして、かかるフロートＦは以下によって形成される。これは図１３に示される。
５０は第１フロート部材１を挿入配置する第１治具であり、第１フロート部材１の外周形状に相当する外周ガイド溝５０Ａが左端面５０Ｂより右方に向かって凹設され、第１フロート部材１はこの外周ガイド溝５０Ａ内に挿入配置されるもので、このとき開口端部１Ａは第１治具５０の左端面５０Ｂより左方に突出する。
５１は第２フロート部材２を挿入配置する第２治具であり、波立ち防止リブ２Ｃの外周形状に相当する外周ガイド溝５１Ａが右端面５１Ｂより左方に向かって凹設され、第２フロート部材２はこの外周ガイド溝５１Ａ内に挿入配置されるもので、このとき開口端部２Ａは第２治具５１の右端面５１Ｂより右方に向かって突出する。
そして、前記治具に挿入配置された状態にある第１フロート部材１の開口端部１Ａと第２フロート部材２の開口端部２Ａとが図示せぬ熱板によって溶融され、次いで溶融状態にある両フロート部材１，２の開口端部１Ａ，２Ａとが当接されるとともに冷却固化され、これによって図１２，図１４に示される中空状をなすフロートＦが形成される。
【０００４】
【発明が解決しようとする課題】
かかる従来のフロートの製造装置によると、波立ち防止リブ２Ｃを備える第２フロート部材２は第２治具５１の右端面５１Ｂから水平方向に移動して第２治具５１内へ挿入配置されるもので、外周ガイド溝５１Ａの溝形状は波立ち防止リブ２Ｃの外形状に合わせて凹設される。
そして、前記第２治具を用いることによると、第１フロート部材１の開口端部１Ａと第２フロート部材２の開口端部２Ａとの溶着時において、溶着ズレが発生する恐れがある。
これは、第２フロート部材２の開口端部２Ａ近傍の外周壁２Ｂａの部分と外周ガイド溝５１Ａとの間に間隙Ｓが形成され、前記外周壁２Ｂａの外周部分を外周ガイド溝５１Ａによって強制的に支持できないことに起因するものである。
そして、かかる両開口端部１Ａ，２Ａとの間に溶着ズレが発生することは、フロートＦの耐圧性の低下、接合強度の低下、更には溶着部のバリの発生、等につながり、特に気化器のフロートとして用いるのに適さないものである。
すなわち、フロートＦの耐圧性、接合強度、の低下はフロートＦの破損につながり、燃料液面の制御性が劣化する恐れがあり、又バリが剥離した際には、バリが浮子室内の燃料に混入して燃料通路内に進入し、混合気の制御性が劣化することにつながる。
尚、かかる両開口端部１Ａ，２Ａの溶着状態を全てのフロートに渡って検査し、良品のみを選別することは可能であるが検査時間の増加はフロートの製造コストを大きく上昇させて好ましいものでない。
【０００５】
本発明は、前記不具合に鑑み成されたもので、その目的とするところは、耐圧性、接合強度が優れ、且つバリの発生の少ない合成樹脂製フロートを製造するに好適なフロートの製造装置を提供すること。及びそれを達成するに好適なフロートの製造方法を提供すること。にある。
【０００６】
【課題を達成する為の手段】
本発明になる気化器におけるフロートの製造装置は前記目的達成の為に、有底カップ状をなし合成樹脂材料によって形成される第１フロート部材１と、
有底カップ状をなすとともにその外周壁２Ｂには、カップの開口方向Ａに略直交する鍔状の波立ち防止リブ２Ｃを有し、合成樹脂材料によって形成される第２フロート部材２と、
を備え、
前記第１フロート部材が第１治具に挿入配置され、第２フロート部材２が第２治具に挿入配置され、第１フロート部材１の開口端部１Ａと第２フロート部材２の開口端部２Ａとを熱溶着する気化器におけるフロートの製造装置において、
第２フロート部材２を挿入配置する第２治具３は、開口端部２Ａの開口方向Ａに直交する方向Ｂにあって、第２治具３の上側３Ａから下方に向けて、第２フロート部材２の外周壁２Ｂａ，２Ｂｂ，２Ｂｃ，２Ｂｄを挿入配置する外周ガイド溝３Ｃと、第２フロート部材２の波立ち防止リブ２Ｃａ，２Ｃｂ，２Ｃｃを挿入配置するリブ溝３Ｄとが穿設されるとともに前記外周ガイド溝３Ｃは、第２治具３の右端面３Ｅに向けて開口して穿設され、
更に第２治具３の右端面３Ｅには、開口端部２Ａの開口方向Ａにあって、第２フロート部材２の上外周壁２Ｂｅの開口端部２Ａの近傍２Ｂｅ１を支持する第１支持部４Ａと、
第２フロート部材２の上側の波立ち防止リブ２Ｃｄの開口側面２Ｃｄ１を支持する第２支持部４Ｂを有するセット治具４を備え、
第２フロート部材２が第２冶具３の上側から方向Ｂに沿って第２冶具３に挿入配置され、
第２フロート部材２の外周壁２Ｂａ，２Ｂｂ，２Ｂｃ，２Ｂｄを第２治具３の外周ガイド溝３Ｃにて支持するとともに上外周壁２Ｂｅの開口端部２Ａの近傍２Ｂｅ１をセット治具４の第１支持部４Ａにて支持し、第２フロート部材２の波立ち防止リブ２Ｃａ，２Ｃｂ，２Ｃｃを第２治具３のリブ溝３Ｄにて支持するとともに上側波立ち防止リブ２Ｃｄの開口側面２Ｃｄ１をセット治具３の第２支持部４Ｂにて支持し、
かかる第２フロート部材２の開口端部２Ａの近傍の外周壁２Ｂｂ，２Ｂｃ，２Ｂｄ，２Ｂｅがセット治具４を含む第２治具３による支持状態において、第２フロート部材２の開口端部２Ａと、第１治具５０によって支持される第１フロート部材１の開口端部１Ａとを熱溶着することを特徴とする。
【０００７】
又、本発明になる気化器のフロートの製造方法は、前記目的達成の為に、第１治具５０と第２治具３とがそれぞれ対向した状態で横方向に離間した状態にあって、
第１治具５０の外周ガイド溝５０Ａ内に第１フロート部材１を挿入配置し、
第２治具３の第１冶具５０と対向する方向に直交する上方より、第２フロート部材２の外周壁２Ｂａ，２Ｂｂ，２Ｂｃ，２Ｂｄを外周ガイド溝３Ｃ内に挿入配置するとともに波立ち防止リブ２Ｃａ，２Ｃｂ，２Ｃｃをリブ溝３Ｄ内に挿入配置する第１の工程と；
第２治具３の第１冶具５０と対向する右端面３Ｅよりセット治具４を第２治具３内に向けて挿入し、第１支持部４Ａにて第２フロート部材２の上外周壁２Ｂｅの開口端部２Ａの近傍を当接支持するとともに第２支持部４Ｂにて第２フロート部材２の上側の波立ち防止リブ２Ｃｄの開口側面２Ｃｄ１を当接支持する第２の工程と、
第１治具５０、第２治具３を、両治具５０，３間に配置される熱板Ｈに向けて近接し、第１フロート部材１の開口端部１Ａと第２フロート部材２の開口端部２Ａを溶融する第３の工程と；
第１治具５０、第２治具３を熱板Ｈより離すとともに熱板Ｈを両治具間より除く第４の工程と；
第１治具５０と第２治具３とを近接し、溶融状態にある第１フロート部材１の開口端部１Ａと第２フロート部材２の開口端部２Ａとを固着する第５の工程と；
第１治具５０と第２治具３とを離間するとともにセット治具４を第２治具３より取り出す第６の工程と；
第１フロート部材１が固着状態にある第２フロート部材２を、第１冶具５０と対向する方向に直交する上方に向けて移動し、第２フロート部材２を第２治具３より取り出す第７の工程と；
よりなることを特徴とする。
【０００８】
【作用】
本発明になる気化器におけるフロート製造装置及びその製造方法によると、第２フロート部材の開口端部の近傍の外周壁は、第２治具の外周ガイド溝とセット治具の第１支持部によって当接支持され、また第２フロート部材の波立ち防止リブは、第２治具のリブ溝とセット治具の第２支持部にて当接支持されるので、少なくとも第２フロート部材の開口端部の近傍の外周壁に隙間なく正確に支持することができ、これによって第１フロート部材の開口端部と第２フロート部材の開口端部とをズレることなく正確に溶着できる。
【０００９】
【実施例】
以下、本発明について詳細に説明する。
フロートＦは図１２、図１４に示されるものと同一であり、第１治具５０もまた図１３に示されるものと同一であるので同一符号を使用する。
又、説明の中において、上、下、左、右は説明を容易にする為に用いたもので、これによって何等の限定を受けるものでない。
セット治具を含む第２治具について図１、図２、図３により説明する。
図１は縦断面図、図２は図１の右側面図、図３は図２の上部平面図、であり、図中フロートＦは一点鎖線で示される。
３は第２フロート部材２を挿入配置する第２治具であって以下よりなる。
第２フロート部材２の開口端部２Ａの開口方向Ａ（図１において右方への水平方向）に直交する方向Ｂ（図１において上下方向）には、第２治具３の上側３Ａから下方に向けて第２フロート部材２の外周壁２Ｂを挿入配置する外周ガイド溝３Ｃが穿設される。
図１には、第２フロート部材２の底外周壁２Ｂａをガイドする底外周ガイド溝３Ｃａと、
下外周壁２Ｂｂをガイドする下外周ガイド溝３Ｃｂが示され、又、図３には第２フロート部材２の一外周壁２Ｂｃをガイドする一外周ガイド溝３Ｃｃと、第２フロート部材２の他外周壁２Ｂｄをガイドする他外周ガイド溝３Ｃｄが示される。
【００１０】
又、第２治具３の上側３Ａから下方に向けて第２フロート部材２の波立ち防止リブ２Ｃを挿入配置するリブ溝３Ｄが穿設される。
図１には、第２フロート部材２の下外周壁２Ｂｂに設けられる下側波立ち防止リブ２Ｃａをガイドする下リブ溝３Ｄａと、一外周壁２Ｂｃに設けられる一側波立ち防止リブ２Ｃｂをガイドする一リブ溝３Ｄｂが示される。
又、図３には一側波立ち防止リブ２Ｃｂをガイドする一リブ溝３Ｄｂと、他外周壁２Ｂｄに設けられる他側波立ち防止リブ２Ｃｃをガイドする他リブ溝３Ｄｃが示される。
【００１１】
いいかえると、底外周ガイド溝３Ｃａ、一外周ガイド溝３Ｃｃ、他外周ガイド溝３Ｃｄ及び一リブ溝３Ｄｂ、他リブ溝３Ｄｃは第２治具３の上側３Ａに開口し、下外周ガイド溝３Ｃｂ、下リブ溝３Ｄａは上側３Ａに臨んで開口する。
又、第２治具３の右端面３Ｅには一外周ガイド溝３Ｃｃと他外周ガイド溝３Ｃｄと下外周ガイド溝３Ｃｂが開口する。
【００１２】
又、第２治具３の右端面３Ｅに臨んで、第２フロート部材２の開口端部２Ａの開口方向Ａに沿って第２治具３内に挿入配置されるセット治具４が配置される。
このセット治具４は例えば矩形状をなし、第２フロート部材２の上外周壁２Ｂｅで且つ開口端部２Ａの近傍の上外周壁２Ｂｅ１を支持する第１支持部４Ａと、上側波立ち防止リブ２Ｃｄであって且つ開口端部２Ａ側の開口側面２Ｃｄ１を支持する第２支持部４Ｂとを備える。
かかるセット治具４は第２治具３の右端面３Ｅから図１において左方へ挿入され、左方への移動停止は例えばセット治具４の左端面を底外周ガイド溝３Ｃａに当接させることによって行なうことができる。
又、セット治具４を第２治具３内において安定配置させるには、ボール４Ｄをスプリング４Ｅによってセット治具４に弾性的に押圧することによって行なうことができる。
尚、セット治具４を第２治具３の右端面３Ｅから第２治具３内へ挿入する為に、セット治具４の外形状に相当するガイド孔３Ｆを右端面３Ｅから第２治具３内に穿設される。
【００１３】
次に前述した第１治具５０及び第２治具３を用いてのフロートＦの製造について説明する。
第１工程は第１フロート部材１と第２フロート部材２の治具への配置工程である。
このとき第１治具５０と第２治具３とは離れた状態にあり、第１治具５０の左端面５０Ｂより外周ガイド溝５０Ａ内第１フロート部材１が挿入配置される。
又、第２治具３の上側３Ａより外周ガイド溝３Ｃ内に向けて第２フロート部材２の外周壁２Ｂが挿入配置されるとともにリブ溝３Ｄに向けて波立ち防止リブ２Ｃが挿入配置される。
以上によると、第１フロート部材１は第１治具の外周ガイド溝５０Ａ内に挿入配置され、開口端部１Ａは左端面５０Ｂよりわずかに左右方へ突出して配置される。
又、第２フロート部材２の下外周壁２Ｂｂは下外周ガイド溝３Ｃｂに当接され、底外周壁２Ｂａは底外周ガイド溝３Ｃａに当接され、一外周壁２Ｂｃは一外周ガイド溝３Ｃｃに当接され、底外周壁２Ｂａは底外周ガイド溝３Ｃａに当接され、他外周壁２Ｂｄは他外周ガイド溝３Ｃｄに当接して配置される。
一方、下側波立ち防止リブ２Ｃａは下リブ溝３Ｄａに当接され、一側波立ち防止リブ２Ｃｂは一リブ溝３Ｄｂに当接され、他側波立ち防止リブ２Ｃｃは他リブ溝３Ｄｃに当接して配置される。
【００１４】
第２工程において、第２治具３の右端面３Ｅからガイド孔３Ｆ内にセット治具４が挿入配置されるもので、図５がセット治具４の挿入初期状態を示し、図６がセット治具４の挿入完了状態を示すものである。
第２工程によると、第２フロート部材２の開口端部２Ａの近傍の上外周壁２Ｂｅ１はセット治具４の第１支持部４Ａによって当接され、上側波立ち防止リブ２Ｃｄの開口端部２Ａ側の開口側面２Ｃｄ１はセット治具４の第２支持部４Ｂによって当接配置される。
尚、かかる状態においてセット治具４はスプリング４Ｅによって押圧されるボール４Ｄによって適正な押圧力をもって第２治具３に配置される。
かかる第２の工程によると、第２フロート部材２の上外周壁２Ｂｅ、下外周壁２Ｂｂ、底外周壁２Ｂａ、一外周壁２Ｂｃ、他外周壁２Ｂｄ、の少なくもと開口端部２Ａの近傍の外周壁２Ｂは第２治具の外周ガイド溝３Ｃｂ、３Ｃａ，３Ｃｃ，３Ｃｄ及びセット治具４の第１支持部４Ａによって当接支持される。
又、第２フロート部材２の下側波立ち防止リブ２Ｃａ、一側波立ち防止リブ２Ｃｂ、他側 波立ち防止リブ２Ｃｃは第２治具３のリブ溝３Ｄａ、３Ｄｂ、３Ｄｃに当接支持され上側波立ち防止リブ２Ｃｄの開口側面２Ｃｄ１がセット治具４の第２支持部４Ｂによって当接支持される。
尚、この第２の工程状態において第２フロート部材２の開口端部２Ａは第２治具３の右端面３Ｅよりわずかに右方へ突出して配置される。
【００１５】
第３の工程はフロート部材の溶融工程であり、図６、図７に示される。
第１治具５０に挿入配置された第１フロート部材１と、第２治具３及びセット治具４によって支持された第２フロート部材２とは離れた状態に配置され、各フロート部材１及び２の開口端部１Ａ，２Ａの間に電気的に加熱された熱板Ｈが配置され、この状態において、前記各開口端部１Ａ，２Ａが熱板Ｈに当接され、これによって各開口端部１Ａ，２Ａが溶融される。
【００１６】
次に前記熱板Ｈに当接状態にある第１治具５０及び第２治具３がそれぞれ外側方へ移動されて熱板Ｈより離され、熱板Ｈが両開口端部１Ａ，２Ａより除かれた状態が第４の工程であり、次いで第５の工程である両フロート部材１，２の固着が行なわれる。
第５の工程は図８に示されるもので、第１治具５０及び第２治具３が再び近接されることによって両フロート部材１，２の溶融状態にある開口端部１Ａ，２Ａが当接し、開口端部１Ａ，２Ａが冷却によって固化することによって開口端部１Ａ，２Ａが溶着される。
かかる第５の工程によって第１フロート部材１と第２フロート部材２が接合されて中空状のフロートが形成される。
【００１７】
第６の工程はセット治具４の取り出し工程であり、まず第１治具５０と第２治具３とが引離なされる。
これは図９に示されるもので、このとき第１フロート部材１が溶着された第２フロート部材２はセット治具４によって依然として第２治具３内に存在する。
次いでセット治具４が第２治具３より右側方Ａへ引き抜かれるもので、これによると、第１フロート部材１及び第２フロート部材２とよりなるフロートＦの上方向への移動が自由状態となる。これは図１０に示される。
【００１８】
第７の工程は、治具からのフロートの取り出し工程であり、フロートＦは第２治具３の外周ガイド溝３Ｃ及びリブ溝３Ｄ内を上方に向かって引きぬかれる。
これは図１１に示されるものであり、これによって第１フロート部材１と第２フロート部材２とが溶着されて形成される中空状のフロートＦが取り出される。
【００１９】
以上よりなるフロートの製造装置及びその製造方法によると、特に外周壁２Ｂに鍔状の波立ち防止リブ２Ｃを備える第２フロート部材２において、第２フロート部材２の開口端部２Ａの近傍の外周壁が、第２治具３の下外周ガイド溝３Ｃｂ、一外周ガイド溝３Ｃｃ、他外周ガイド溝３Ｃｄ及びセット治具４の第１支持部４Ａによって当接支持されるので、第１フロート１の開口端部１Ａとの溶着時において溶着ズレの発生を完全に抑止でき、各開口端部１Ａ，２Ａを正確に溶着することができたものであり、これによって溶着強度、耐圧性の優れたフロートを提供でき、更にはこの溶着部における溶着バリの発生を抑止できたものである。
又、本発明の製造装置によると、従来用いられる第２治具に単にセット治具を付加すればよいので容易に実施できるものである。
【００２０】
【発明の効果】
以上の如く、本発明になる気化器のフロートにおける製造装置として、第２フロート部材を挿入配置する第２治具は、開口端部の開口方向Ａに直交する方向Ｂにあって、第２治具の上側から下方に向けて、第２フロート部材の外周壁を挿入配置する外周ガイド溝と、第２フロート部材の波立ち防止リブを挿入配置するリブ溝とが穿設されるとともに前記外周ガイド溝は、第２治具の右端面に向けて開口して穿設され、
更に第２治具の右端面には、開口端部の開口方向にあって、第２フロートの上外周壁の開口端部の近傍を支持する第１支持部と、
第２フロートの上リブの開口側面を支持する第２支持部を有するセット治具を備え、
第２フロート部材の外周壁を第２治具の外周ガイド溝にて支持するとともに上外周壁の開口端部の近傍をセット治具の第１支持部にて支持し、第２フロート部材のリブを第２治具のリブ溝にて支持するとともに上リブの開口側面をセット治具の第２支持部にて支持し、
かかる第２フロート部材の開口端部の近傍の外周壁がセット治具を含む第２治具による支持状態において、第２フロート部材の開口端部と、第１治具によって支持される第１フロート部材の開口端部とを熱溶着したこと。
及びその製造方法として、第１治具と第２治具とが離間した状態にあって、
第１治具の外周ガイド溝内に第１フロート部材を挿入配置し、
第２治具の上方より、第２フロート部材の外周壁を外周ガイド溝内に挿入配置するとともに波立ち防止リブをリブ溝内に挿入配置する第１の工程と；
第２治具の右端面よりセット治具を第２治具内に向けて挿入し、第１支持部にて第２フロート部材の上外周壁の開口端部の近傍を当接支持するとともに第２支持部にて第２フロート部材の上側波立ち防止リブの開口側面を当接支持する第２の工程と、
第１治具、第２治具を、両治具間に配置される熱板に向けて近接し、第１フロート部材の開口端部と第２フロート部材の開口端部を溶融する第３の工程と；
第１治具、第２治具を熱板より離すとともに熱板を両治具間より除く第４の工程と；
第１治具と第２治具とを近接し、溶融状態にある第１フロート部材の開口端部と第２フロート部材の開口端部とを固着する第５の工程と；
第１治具と第２治具とを離間するとともにセット治具を第２治具より取り出す第６の工程と；
第１フロート部材が固着状態にある第２フロート部材を、上方に向けて移動し、第２フロート部材を第２治具より取り出す第７の工程と；
によって行なったことにより、溶着強度及び耐圧性の優れた合成樹脂製のフロートを提供できるとともに溶着バリの発生の少ない安価な前記フロートを提供できたものである。
【図面の簡単な説明】
【図１】 本発明になる気化器におけるフロートの製造装置における第２治具及びセット治具の装着状態を示す縦断面図。
【図２】 図１の右側面図。
【図３】 図１の上部平面図。
【図４】 第１治具へ第１フロート部材を、第２治具に第２フロート部材を挿入する初期状態を示す縦断面図。
【図５】 第１治具へ第１フロート部材が挿入配置され、第２治具へ第２フロート部材が挿入配置され、更にセット治具の挿入初期状態を示す縦断面図。
【図６】 図５の状態にあって、第１治具と第２治具との間に熱板が配置された状態を示す縦断面図。
【図７】 第１フロート部材と第２フロート部材とが熱板に当接された状態を示す縦断面図。
【図８】 第１フロート部材の開口端部と第２フロート部材の開口端部とが当接されて溶着された状態を示す縦断面図。
【図９】 第１フロート部材と第２フロート部材の溶着が完了し、第１治具が第２治具より引離なされた状態を示す縦断面図。
【図１０】 図６の状態においてセット治具が第２治具より取り出された状態を示す縦断面図。
【図１１】 フロートを第２治具より取り出した状態を示す縦断面図。
【図１２】 フロートの斜視図。
【図１３】 従来のフロートの製造装置。
【図１４】 フロートの縦断面図。
【符号の説明】
１ 第１フロート部材
１Ａ 開口端部
２ 第２フロート部材
２Ａ 開口端部
２Ｂ 外周壁
２Ｃ 波立ち防止リブ
３ 第２治具
３Ａ 上側
３Ｃ 外周ガイド溝
３Ｄ リブ溝
４ セット治具
４Ａ 第１支持部
４Ｂ 第２支持部[0001]
[Industrial application fields]
The present invention relates to a float that is formed of a synthetic resin material and forms a hollow body, and two floats are prepared in the form of a bottomed cup in the state of the material, and they are fixed by thermal welding. Such a float is used in a constant liquid level control device that forms a constant fuel level in the float chamber of a carburetor that adjusts and controls the amount and concentration of the air-fuel mixture supplied to the internal combustion engine.
[0002]
[Prior art]
The float F used in the vaporizer is shown in FIG.
Reference numeral 1 denotes a first float member that is formed of a synthetic resin material and has a bottomed cup shape in which an opening end 1A is formed toward the left in FIG.
Reference numeral 2 denotes a second float member having a bottomed cup shape which is formed of a synthetic resin material and has an opening end 2A formed in the right direction in FIG. 12, and the outer peripheral wall 2B is substantially orthogonal to the opening direction. A hook-shaped wave preventing rib 2C is formed so as to protrude toward the side of the entire circumference.
The ripple prevention rib 2C of the second float member 2 is used to prevent the ripple of the fuel liquid level formed in the float chamber when the float F is disposed in the float chamber of the vaporizer, or to increase the rigidity of the float F. Formed in.
[0003]
And this float F is formed by the following. This is shown in FIG.
Reference numeral 50 denotes a first jig for inserting and arranging the first float member 1, and an outer peripheral guide groove 50A corresponding to the outer peripheral shape of the first float member 1 is recessed from the left end face 50B toward the right side. The member 1 is inserted and disposed in the outer peripheral guide groove 50 </ b> A. At this time, the opening end 1 </ b> A protrudes leftward from the left end surface 50 </ b> B of the first jig 50.
Reference numeral 51 denotes a second jig for inserting and arranging the second float member 2, and an outer peripheral guide groove 51A corresponding to the outer peripheral shape of the anti-ripple rib 2C is recessed leftward from the right end surface 51B. 2 is inserted and disposed in the outer peripheral guide groove 51 </ b> A. At this time, the opening end 2 </ b> A protrudes rightward from the right end surface 51 </ b> B of the second jig 51.
Then, the opening end 1A of the first float member 1 and the opening end 2A of the second float member 2 that are inserted and arranged in the jig are melted by a hot plate (not shown) and then in a molten state. The open end portions 1A and 2A of both the float members 1 and 2 are brought into contact with each other and cooled and solidified, whereby a hollow F shown in FIGS. 12 and 14 is formed.
[0004]
[Problems to be solved by the invention]
According to such a conventional float manufacturing apparatus, the second float member 2 provided with the anti-ripple rib 2C moves horizontally from the right end surface 51B of the second jig 51 and is inserted into the second jig 51. Thus, the groove shape of the outer peripheral guide groove 51A is recessed according to the outer shape of the anti-ripple rib 2C.
Then, when the second jig is used, there is a risk that welding displacement occurs when the opening end 1A of the first float member 1 and the opening end 2A of the second float member 2 are welded.
This is because a gap S is formed between the portion of the outer peripheral wall 2Ba near the opening end 2A of the second float member 2 and the outer peripheral guide groove 51A, and the outer peripheral portion of the outer peripheral wall 2Ba is forced by the outer peripheral guide groove 51A. This is due to the fact that it cannot be supported.
Further, the occurrence of welding deviation between both opening end portions 1A and 2A leads to a decrease in pressure resistance of the float F, a decrease in bonding strength, and further generation of burrs in the welding portion, and particularly vaporization. It is not suitable for use as a container float.
That is, a decrease in the pressure resistance and bonding strength of the float F leads to breakage of the float F, which may deteriorate the controllability of the fuel liquid level. When the burrs are peeled off, the burrs become fuel in the float chamber. It enters the fuel passage and leads to deterioration of the controllability of the air-fuel mixture.
It is possible to inspect the welded state of both open end portions 1A and 2A over all the floats and select only good products, but an increase in inspection time is preferable because it greatly increases the manufacturing cost of the floats. Not.
[0005]
The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to provide a float manufacturing apparatus suitable for manufacturing a synthetic resin float that has excellent pressure resistance, bonding strength, and little burrs. To provide. And a method for producing a float suitable for achieving the same. It is in.
[0006]
[Means for achieving the object]
In order to achieve the above object, the float manufacturing apparatus in the vaporizer according to the present invention has a bottomed cup shape and is formed of a synthetic resin material.
A second float member 2 having a cup shape with a bottom and a rib-shaped anti-ripening rib 2C substantially orthogonal to the opening direction A of the cup on the outer peripheral wall 2B, and formed of a synthetic resin material;
With
Said first float member is inserted in the first jig, the second float member 2 is inserted in the second jig, the first float member 1 of the opening end portion 1A and the open end of the second float member 2 In the float manufacturing apparatus in the vaporizer for heat welding 2A,
The second jig 3 for inserting and arranging the second float member 2 is in a direction B orthogonal to the opening direction A of the opening end 2A, and the second float 3 is directed downward from the upper side 3A of the second jig 3. An outer peripheral guide groove 3C for inserting and arranging the outer peripheral walls 2Ba, 2Bb, 2Bc and 2Bd of the member 2 and a rib groove 3D for inserting and arranging the anti- ripple ribs 2Ca, 2Cb and 2Cc of the second float member 2 are formed. The outer peripheral guide groove 3C is opened and drilled toward the right end surface 3E of the second jig 3.
Further, on the right end surface 3E of the second jig 3, a first support portion is provided in the opening direction A of the opening end portion 2A and supports the vicinity 2Be1 of the upper end wall 2Be of the second float member 2 near the opening end portion 2A. 4A,
A set jig 4 having a second support portion 4B for supporting the opening side surface 2Cd1 of the upper wobbling prevention rib 2Cd of the second float member 2;
The second float member 2 is inserted and arranged in the second jig 3 along the direction B from the upper side of the second jig 3,
The outer peripheral walls 2Ba, 2Bb, 2Bc, 2Bd of the second float member 2 are supported by the outer peripheral guide groove 3C of the second jig 3, and the vicinity 2Be1 of the upper outer peripheral wall 2Be near the opening end 2A is 1 is supported by the support portion 4A, and the wave preventing ribs 2Ca, 2Cb, 2Cc of the second float member 2 are supported by the rib groove 3D of the second jig 3, and the opening side surface 2Cd1 of the upper wave preventing rib 2Cd is set. Supported by the second support part 4B of the tool 3,
When the outer peripheral walls 2Bb, 2Bc, 2Bd, 2Be near the opening end 2A of the second float member 2 are supported by the second jig 3 including the setting jig 4, the opening end 2A of the second float member 2 is provided. And the opening end 1A of the first float member 1 supported by the first jig 50 are heat-welded.
[0007]
Further, the method for manufacturing a float of a vaporizer according to the present invention is in a state where the first jig 50 and the second jig 3 are separated from each other in the lateral direction in order to achieve the above-described object,
The first float member 1 is inserted and arranged in the outer peripheral guide groove 50A of the first jig 50,
From above perpendicular to a direction opposite to the first jig 50 of the second jig 3, the second float member 2 of the outer peripheral wall 2Ba, 2Bb, 2Bc, preventing rib 2Ca waving is inserted arranged on the outer peripheral guide groove 3C to 2Bd , 2Cb, 2Cc are inserted and arranged in the rib groove 3D;
The set jig 4 is inserted into the second jig 3 from the right end surface 3E facing the first jig 50 of the second jig 3, and the upper outer peripheral wall of the second float member 2 is formed by the first support portion 4A. a second step of the opening side 2Cd1 of preventing ribs 2Cd at the second support portion 4B ruffling of the second upper side of the float member 2 abuts support with the vicinity of the open end 2A of 2Be contact support,
The 1st jig | tool 50 and the 2nd jig | tool 3 are adjoined toward the hot platen H arrange | positioned between both jig | tool 50,3, 1A of opening ends of the 1st float member 1, and the 2nd float member 2 of A third step of melting the open end 2A;
A fourth step of separating the first jig 50 and the second jig 3 from the hot plate H and removing the hot plate H from between the two jigs;
A fifth step of bringing the first jig 50 and the second jig 3 close to each other, and fixing the opening end 1A of the first float member 1 in the molten state and the opening end 2A of the second float member 2; ;
A sixth step of separating the first jig 50 and the second jig 3 and taking out the set jig 4 from the second jig 3;
The second float member 2 in which the first float member 1 is fixed is moved upward in the direction perpendicular to the direction facing the first jig 50, and the second float member 2 is taken out from the second jig 3. And the process of;
It is characterized by comprising.
[0008]
[Action]
According to the float manufacturing apparatus and method for manufacturing a vaporizer according to the present invention, the outer peripheral wall in the vicinity of the opening end of the second float member is formed by the outer peripheral guide groove of the second jig and the first support of the set jig. The wobbling prevention rib of the second float member is abutted and supported by the rib groove of the second jig and the second support portion of the set jig, so that at least the opening end of the second float member Can be accurately supported without any gap on the outer peripheral wall, so that the opening end of the first float member and the opening end of the second float member can be accurately welded without shifting.
[0009]
【Example】
Hereinafter, the present invention will be described in detail.
The float F is the same as that shown in FIGS. 12 and 14 , and the first jig 50 is also the same as that shown in FIG .
In the description, upper, lower, left, and right are used for ease of explanation, and are not subject to any limitation.
The second jig including the setting jig will be described with reference to FIGS.
1 is a longitudinal sectional view, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a top plan view of FIG. 2, and the float F is indicated by an alternate long and short dash line.
3 is the 2nd jig | tool which inserts and arranges the 2nd float member 2, and consists of the following.
In the direction B (vertical direction in FIG. 1) perpendicular to the opening direction A (horizontal direction to the right in FIG. 1) of the opening end 2A of the second float member 2, the upper side 3A of the second jig 3 is downward. An outer peripheral guide groove 3C for inserting and arranging the outer peripheral wall 2B of the second float member 2 is formed toward the end.
In FIG. 1, a bottom outer peripheral guide groove 3Ca that guides the bottom outer peripheral wall 2Ba of the second float member 2,
A lower outer peripheral guide groove 3Cb for guiding the lower outer peripheral wall 2Bb is shown. In FIG. 3, one outer peripheral guide groove 3Cc for guiding one outer peripheral wall 2Bc of the second float member 2 and the other outer periphery of the second float member 2 are shown. Another outer peripheral guide groove 3Cd for guiding the wall 2Bd is shown.
[0010]
Further, a rib groove 3D for inserting and arranging the anti-ripple rib 2C of the second float member 2 is drilled downward from the upper side 3A of the second jig 3.
FIG. 1 shows a lower rib groove 3Da that guides the lower side wobbling prevention rib 2Ca provided on the lower outer peripheral wall 2Bb of the second float member 2 and one side wobbling prevention rib 2Cb provided on the one outer peripheral wall 2Bc. A rib groove 3Db is shown.
Also, other rib grooves 3Dc for guiding the one rib groove 3Db for guiding one side waving prevention rib 2Cb, other side waving prevention rib 2Cc provided another outer peripheral wall 2Bd is shown in FIG.
[0011]
In other words, the bottom outer guide groove 3Ca, the one outer guide groove 3Cc, the other outer guide groove 3Cd, the one rib groove 3Db, and the other rib groove 3Dc open to the upper side 3A of the second jig 3, and the lower outer guide groove 3Cb, rib grooves 3D a is opened to face the upper side 3A.
Further, the right end surface 3E of the second jig three to the outer peripheral guide groove 3Cc and other outer peripheral guide groove 3Cd and lower outer peripheral guide groove 3C b is opened.
[0012]
Further, a set jig 4 that is inserted and arranged in the second jig 3 is arranged along the opening direction A of the opening end 2A of the second float member 2 so as to face the right end surface 3E of the second jig 3. The
The setting jig 4 has, for example, a rectangular shape, and includes a first support portion 4A that supports the upper outer peripheral wall 2Be1 of the second float member 2 on the upper outer peripheral wall 2Be and in the vicinity of the opening end 2A, and the upper wobbling prevention rib 2Cd. And a second support portion 4B that supports the opening side surface 2Cd1 on the opening end 2A side.
The setting jig 4 is inserted to the left in FIG. 1 from the right end surface 3E of the second jig 3, and the movement to the left is stopped, for example, by bringing the left end surface of the setting jig 4 into contact with the bottom outer peripheral guide groove 3Ca. Can be done.
Further, the stable placement of the set jig 4 in the second jig 3 can be performed by elastically pressing the ball 4D against the set jig 4 by a spring 4E.
In order to insert the setting jig 4 from the right end surface 3E of the second jig 3 into the second jig 3, a guide hole 3F corresponding to the outer shape of the setting jig 4 is provided from the right end surface 3E to the second jig. Drilled into the tool 3.
[0013]
Next, the manufacture of the float F using the first jig 50 and the second jig 3 described above will be described.
The first step is a step of arranging the first float member 1 and the second float member 2 on the jig.
At this time, the first jig 50 and the second jig 3 are separated from each other, and the first float member 1 in the outer circumferential guide groove 50A is inserted and arranged from the left end surface 50B of the first jig 50.
In addition, the outer peripheral wall 2B of the second float member 2 is inserted and arranged from the upper side 3A of the second jig 3 into the outer peripheral guide groove 3C, and the ripple preventing rib 2C is inserted and arranged toward the rib groove 3D.
According to the above, the first float member 1 is inserted and disposed in an angular guide groove 50A of the first jig, the open end portion 1A is arranged so as to protrude into the slightly left rightward from the left end surface 50B.
The lower outer peripheral wall 2Bb of the second float member 2 is in contact with the lower outer peripheral guide groove 3Cb, the bottom outer peripheral wall 2Ba is in contact with the bottom outer peripheral guide groove 3Ca, and the one outer peripheral wall 2Bc is in contact with the one outer peripheral guide groove 3Cc. The bottom outer peripheral wall 2Ba is in contact with the bottom outer peripheral guide groove 3Ca, and the other outer peripheral wall 2Bd is in contact with the other outer peripheral guide groove 3Cd.
On the other hand, the lower side ripple prevention rib 2Ca is in contact with the lower rib groove 3Da, the one side ripple prevention rib 2Cb is in contact with the one rib groove 3Db, and the other side ripple prevention rib 2Cc is in contact with the other rib groove 3Dc. Is done.
[0014]
In the second step, the setting jig 4 is inserted into the guide hole 3F from the right end surface 3E of the second jig 3, FIG. 5 shows the initial insertion state of the setting jig 4, and FIG. The insertion completion state of the jig 4 is shown.
According to the second step, the upper outer peripheral wall 2Be1 in the vicinity of the opening end 2A of the second float member 2 is brought into contact with the first support portion 4A of the setting jig 4, and the opening end 2A side of the upper wobbling prevention rib 2Cd The opening side surface 2 </ b> Cd <b> 1 is abutted and disposed by the second support portion 4 </ b> B of the setting jig 4.
In this state, the setting jig 4 is disposed on the second jig 3 with an appropriate pressing force by the ball 4D pressed by the spring 4E.
According to the second step, the upper outer peripheral wall 2Be, the lower outer peripheral wall 2Bb, the bottom outer peripheral wall 2Ba, the one outer peripheral wall 2Bc, and the other outer peripheral wall 2Bd of the second float member 2 are at least near the opening end 2A. The outer peripheral wall 2B is abutted and supported by the outer peripheral guide grooves 3Cb, 3Ca, 3Cc, 3Cd of the second jig and the first support portion 4A of the set jig 4.
Also, the second float member 2 of the lower waving prevention rib 2Ca, one side waving prevention rib 2Cb, the other side waving prevention ribs 2Cc is waving upper abuts support rib grooves 3Da second jig 3, 3Db, the 3Dc prevention The opening side surface 2Cd1 of the rib 2Cd is abutted and supported by the second support portion 4B of the setting jig 4.
In this second process state, the opening end 2A of the second float member 2 is disposed so as to slightly protrude rightward from the right end surface 3E of the second jig 3.
[0015]
The third step is a float member melting step and is shown in FIGS.
The first float member 1 inserted and arranged in the first jig 50 and the second float member 2 supported by the second jig 3 and the set jig 4 are arranged apart from each other. An electrically heated hot plate H is disposed between the two open end portions 1A and 2A. In this state, the open end portions 1A and 2A are brought into contact with the hot plate H. Portions 1A and 2A are melted.
[0016]
Next, the first jig 50 and the second jig 3 that are in contact with the hot plate H are respectively moved outward and separated from the hot plate H, and the hot plate H is opened from both opening end portions 1A and 2A. The removed state is the fourth step, and then the float members 1 and 2 are fixed, which is the fifth step.
The fifth step is shown in FIG. 8, and when the first jig 50 and the second jig 3 are brought close again, the open end portions 1A and 2A in the molten state of both float members 1 and 2 are applied. The opening end portions 1A and 2A are welded by being solidified by cooling.
By the fifth step, the first float member 1 and the second float member 2 are joined to form a hollow float.
[0017]
The sixth step is a step of taking out the setting jig 4. First, the first jig 50 and the second jig 3 are separated.
This is shown in FIG. 9. At this time, the second float member 2 to which the first float member 1 is welded is still present in the second jig 3 by the setting jig 4.
Next, the set jig 4 is pulled out to the right side A from the second jig 3, and according to this, the upward movement of the float F composed of the first float member 1 and the second float member 2 is in a free state. It becomes. This is shown in FIG.
[0018]
The seventh step is a step of taking out the float from the jig, and the float F is pulled upward in the outer peripheral guide groove 3C and the rib groove 3D of the second jig 3.
This is shown in FIG. 11, whereby a hollow float F formed by welding the first float member 1 and the second float member 2 is taken out.
[0019]
According to the float manufacturing apparatus and the manufacturing method therefor described above, the outer peripheral wall in the vicinity of the opening end 2A of the second float member 2 particularly in the second float member 2 provided with the hook-shaped undulation preventing rib 2C on the outer peripheral wall 2B. Is abutted and supported by the lower outer guide groove 3Cb, the first outer guide groove 3Cc, the other outer guide groove 3Cd, and the first support portion 4A of the set jig 4, so that the opening of the first float 1 is The occurrence of welding misalignment at the time of welding with the end portion 1A can be completely suppressed, and the opening end portions 1A and 2A can be accurately welded, thereby providing a float with excellent welding strength and pressure resistance. Further, it is possible to suppress the occurrence of welding burrs at the welding portion.
Further, according to the manufacturing apparatus of the present invention, it is possible to easily carry out since a setting jig is simply added to the conventionally used second jig.
[0020]
【The invention's effect】
As described above, as a manufacturing apparatus for a float of a vaporizer according to the present invention, the second jig for inserting and arranging the second float member is in the direction B orthogonal to the opening direction A of the opening end, An outer peripheral guide groove for inserting and arranging the outer peripheral wall of the second float member and a rib groove for inserting and arranging an anti-ripple rib of the second float member are formed from the upper side to the lower side of the tool, and the outer peripheral guide groove Is opened and opened toward the right end surface of the second jig,
Furthermore, on the right end surface of the second jig, there is a first support portion that is in the opening direction of the opening end portion and supports the vicinity of the opening end portion of the upper outer peripheral wall of the second float,
A setting jig having a second support portion for supporting the opening side surface of the upper rib of the second float;
The outer peripheral wall of the second float member is supported by the outer peripheral guide groove of the second jig, the vicinity of the opening end of the upper outer peripheral wall is supported by the first support portion of the setting jig, and the rib of the second float member Is supported by the rib groove of the second jig and the opening side surface of the upper rib is supported by the second support portion of the setting jig,
When the outer peripheral wall in the vicinity of the opening end of the second float member is supported by the second jig including the setting jig, the opening end of the second float member and the first float supported by the first jig The opening end of the member was heat welded.
And as a manufacturing method thereof, the first jig and the second jig are in a separated state,
The first float member is inserted and arranged in the outer peripheral guide groove of the first jig,
A first step of inserting and arranging the outer peripheral wall of the second float member in the outer peripheral guide groove and inserting and arranging the anti-ripple rib in the rib groove from above the second jig;
The set jig is inserted into the second jig from the right end surface of the second jig, and the first support portion abuts and supports the vicinity of the opening end portion of the upper outer peripheral wall of the second float member. A second step of abutting and supporting the opening side surface of the upper wobbling prevention rib of the second float member at the two support portions;
A first jig and a second jig are brought close to a heat plate disposed between the two jigs, and a third float member and an open end portion of the second float member are melted. Process and;
A fourth step of separating the first jig and the second jig from the hot plate and removing the hot plate from between the two jigs;
A fifth step of bringing the first jig and the second jig close to each other and fixing the opening end of the first float member and the opening end of the second float member in a molten state;
A sixth step of separating the first jig and the second jig and taking out the set jig from the second jig;
A seventh step in which the second float member in which the first float member is fixed is moved upward and the second float member is taken out from the second jig;
By doing so, it is possible to provide a float made of a synthetic resin excellent in welding strength and pressure resistance, and at the same time, it is possible to provide an inexpensive float with less occurrence of welding burrs.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a mounting state of a second jig and a setting jig in a float manufacturing apparatus in a vaporizer according to the present invention.
FIG. 2 is a right side view of FIG.
FIG. 3 is a top plan view of FIG. 1;
FIG. 4 is a longitudinal sectional view showing an initial state in which a first float member is inserted into a first jig and a second float member is inserted into a second jig.
FIG. 5 is a vertical cross-sectional view showing an initial insertion state of a setting jig in which a first float member is inserted and arranged in a first jig, a second float member is inserted and arranged in a second jig.
6 is a longitudinal sectional view showing a state in which a hot plate is arranged between the first jig and the second jig in the state of FIG.
FIG. 7 is a longitudinal sectional view showing a state in which a first float member and a second float member are in contact with a hot plate.
FIG. 8 is a longitudinal sectional view showing a state in which the opening end of the first float member and the opening end of the second float member are in contact with each other and welded.
FIG. 9 is a longitudinal sectional view showing a state in which welding of the first float member and the second float member is completed and the first jig is separated from the second jig.
10 is a longitudinal sectional view showing a state where the setting jig is taken out from the second jig in the state shown in FIG. 6;
FIG. 11 is a longitudinal sectional view showing a state where a float is taken out from a second jig.
FIG. 12 is a perspective view of a float.
FIG. 13 shows a conventional float manufacturing apparatus.
FIG. 14 is a longitudinal sectional view of a float.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st float member 1A Open end 2 Second float member 2A Open end 2B Outer peripheral wall 2C Ripple prevention rib 3 Second jig 3A Upper 3C Outer guide groove 3D Rib groove 4 Set jig 4A First support 4B First 2 support parts

Claims (2)

有底カップ状をなし合成樹脂材料によって形成される第１フロート部材１と、
有底カップ状をなすとともにその外周壁２Ｂには、カップの開口方向Ａに略直交する鍔状の波立ち防止リブ２Ｃを有し、合成樹脂材料によって形成される第２フロート部材２と、
を備え、
前記第１フロート部材が第１治具に挿入配置され、第２フロート部材２が第２治具に挿入配置され、第１フロート部材１の開口端部１Ａと第２フロート部材２の開口端部２Ａとを熱溶着する気化器におけるフロートの製造装置において、
第２フロート部材２を挿入配置する第２治具３は、開口端部２Ａの開口方向Ａに直交する方向Ｂにあって、第２治具３の上側３Ａから下方に向けて、第２フロート部材２の外周壁２Ｂａ，２Ｂｂ，２Ｂｃ，２Ｂｄを挿入配置する外周ガイド溝３Ｃと、第２フロート部材２の波立ち防止リブ２Ｃａ，２Ｃｂ，２Ｃｃを挿入配置するリブ溝３Ｄとが穿設されるとともに前記外周ガイド溝３Ｃは、第２治具３の右端面３Ｅに向けて開口して穿設され、
更に第２治具３の右端面３Ｅには、開口端部２Ａの開口方向Ａにあって、第２フロート部材２の上外周壁２Ｂｅの開口端部２Ａの近傍２Ｂｅ１を支持する第１支持部４Ａと、
第２フロート部材２の上側の波立ち防止リブ２Ｃｄの開口側面２Ｃｄ１を支持する第２支持部４Ｂを有するセット治具４を備え、
第２フロート部材２が第２冶具３の上側から方向Ｂに沿って第２冶具３に挿入配置され、
第２フロート部材２の外周壁２Ｂａ，２Ｂｂ，２Ｂｃ，２Ｂｄを第２治具３の外周ガイド溝３Ｃにて支持するとともに上外周壁２Ｂｅの開口端部２Ａの近傍２Ｂｅ１をセット治具４の第１支持部４Ａにて支持し、第２フロート部材２の波立ち防止リブ２Ｃａ，２Ｃｂ，２Ｃｃを第２治具３のリブ溝３Ｄにて支持するとともに上側波立ち防止リブ２Ｃｄの開口側面２Ｃｄ１をセット治具３の第２支持部４Ｂにて支持し、
かかる第２フロート部材２の開口端部２Ａの近傍の外周壁２Ｂｂ，２Ｂｃ，２Ｂｄ，２Ｂｅがセット治具４を含む第２治具３による支持状態において、第２フロート部材２の開口端部２Ａと、第１治具５０によって支持される第１フロート部材１の開口端部１Ａとを熱溶着することを特徴とする気化器におけるフロートの製造装置。A first float member 1 having a bottomed cup shape and formed of a synthetic resin material;
A second float member 2 having a cup shape with a bottom and a rib-shaped anti-ripening rib 2C substantially orthogonal to the opening direction A of the cup on the outer peripheral wall 2B, and formed of a synthetic resin material;
With
Said first float member is inserted in the first jig, the second float member 2 is inserted in the second jig, the first float member 1 of the opening end portion 1A and the open end of the second float member 2 In the float manufacturing apparatus in the vaporizer for heat welding 2A,
The second jig 3 for inserting and arranging the second float member 2 is in the direction B orthogonal to the opening direction A of the opening end 2A, and the second float 3 is directed downward from the upper side 3A of the second jig 3. An outer peripheral guide groove 3C for inserting and arranging the outer peripheral walls 2Ba, 2Bb, 2Bc and 2Bd of the member 2 and a rib groove 3D for inserting and arranging the anti- ripple ribs 2Ca, 2Cb and 2Cc of the second float member 2 are formed. The outer peripheral guide groove 3C is opened and drilled toward the right end surface 3E of the second jig 3.
Further, on the right end surface 3E of the second jig 3, a first support portion is provided in the opening direction A of the opening end portion 2A and supports the vicinity 2Be1 of the upper end wall 2Be of the second float member 2 near the opening end portion 2A. 4A,
A set jig 4 having a second support portion 4B for supporting the opening side surface 2Cd1 of the upper wobbling prevention rib 2Cd of the second float member 2;
The second float member 2 is inserted and arranged in the second jig 3 along the direction B from the upper side of the second jig 3,
The outer peripheral walls 2Ba, 2Bb, 2Bc, 2Bd of the second float member 2 are supported by the outer peripheral guide groove 3C of the second jig 3, and the vicinity 2Be1 of the upper outer peripheral wall 2Be near the opening end 2A is 1 is supported by the support portion 4A, and the wave preventing ribs 2Ca, 2Cb, 2Cc of the second float member 2 are supported by the rib groove 3D of the second jig 3, and the opening side surface 2Cd1 of the upper wave preventing rib 2Cd is set. Supported by the second support part 4B of the tool 3,
When the outer peripheral walls 2Bb, 2Bc, 2Bd, 2Be near the opening end 2A of the second float member 2 are supported by the second jig 3 including the setting jig 4, the opening end 2A of the second float member 2 is provided. And an opening end 1A of the first float member 1 supported by the first jig 50 are heat-welded. 第１治具５０と第２治具３とがそれぞれ対向した状態で横方向に離間した状態にあって、
第１治具５０の外周ガイド溝５０Ａ内に第１フロート部材１を挿入配置し、
第２治具３の第１冶具５０と対向する方向に直交する上方より、第２フロート部材２の外周壁２Ｂａ，２Ｂｂ，２Ｂｃ，２Ｂｄを外周ガイド溝３Ｃ内に挿入配置するとともに波立ち防止リブ２Ｃａ，２Ｃｂ，２Ｃｃをリブ溝３Ｄ内に挿入配置する第１の工程と；
第２治具３の第１冶具５０と対向する右端面３Ｅよりセット治具４を第２治具３内に向けて挿入し、第１支持部４Ａにて第２フロート部材２の上外周壁２Ｂｅの開口端部２Ａの近傍を当接支持するとともに第２支持部４Ｂにて第２フロート部材２の上側の波立ち防止リブ２Ｃｄの開口側面２Ｃｄ１を当接支持する第２の工程と、
第１治具５０、第２治具３を、両治具５０，３間に配置される熱板Ｈに向けて近接し、第１フロート部材１の開口端部１Ａと第２フロート部材２の開口端部２Ａを溶融する第３の工程と；
第１治具５０、第２治具３を熱板Ｈより離すとともに熱板Ｈを両治具間より除く第４の工程と；
第１治具５０と第２治具３とを近接し、溶融状態にある第１フロート部材１の開口端部１Ａと第２フロート部材２の開口端部２Ａとを固着する第５の工程と；
第１治具５０と第２治具３とを離間するとともにセット治具４を第２治具３より取り出す第６の工程と；
第１フロート部材１が固着状態にある第２フロート部材２を、第１冶具５０と対向する方 向に直交する上方に向けて移動し、第２フロート部材２を第２治具３より取り出す第７の工程と；
よりなる気化器におけるフロートの製造方法。In the state where the first jig 50 and the second jig 3 are opposed to each other in a state of facing each other,
The first float member 1 is inserted and arranged in the outer peripheral guide groove 50A of the first jig 50,
From above perpendicular to a direction opposite to the first jig 50 of the second jig 3, the second float member 2 of the outer peripheral wall 2Ba, 2Bb, 2Bc, preventing rib 2Ca waving is inserted arranged on the outer peripheral guide groove 3C to 2Bd , 2Cb, 2Cc are inserted and arranged in the rib groove 3D;
The set jig 4 is inserted into the second jig 3 from the right end surface 3E facing the first jig 50 of the second jig 3, and the upper outer peripheral wall of the second float member 2 is formed by the first support portion 4A. a second step of the opening side 2Cd1 of preventing ribs 2Cd at the second support portion 4B ruffling of the second upper side of the float member 2 abuts support with the vicinity of the open end 2A of 2Be contact support,
The 1st jig | tool 50 and the 2nd jig | tool 3 are adjoined toward the hot platen H arrange | positioned between both jig | tool 50,3, 1A of opening ends of the 1st float member 1, and the 2nd float member 2 of A third step of melting the open end 2A;
A fourth step of separating the first jig 50 and the second jig 3 from the hot plate H and removing the hot plate H from between the two jigs;
A fifth step of bringing the first jig 50 and the second jig 3 close to each other, and fixing the opening end 1A of the first float member 1 in the molten state and the opening end 2A of the second float member 2; ;
A sixth step of separating the first jig 50 and the second jig 3 and taking out the set jig 4 from the second jig 3;
The second float member 2 first float member 1 is in the fixed state, upward perpendicular in the direction opposite to the first jig 50 to move to take out the second float member 2 from the second jig 3 a 7 steps;
A method for producing a float in a vaporizer.
JP2002000441A 2002-01-07 2002-01-07 Float manufacturing apparatus and float manufacturing method in vaporizer Expired - Fee Related JP3876337B2 (en)

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JP2002000441A JP3876337B2 (en) 2002-01-07 2002-01-07 Float manufacturing apparatus and float manufacturing method in vaporizer
BRPI0202752-6A BR0202752B1 (en) 2002-01-07 2002-07-03 carburetor float manufacturing apparatus and method for float manufacture.

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Application Number Priority Date Filing Date Title
JP2002000441A JP3876337B2 (en) 2002-01-07 2002-01-07 Float manufacturing apparatus and float manufacturing method in vaporizer

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JP2003200500A JP2003200500A (en) 2003-07-15
JP3876337B2 true JP3876337B2 (en) 2007-01-31

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Publication number Priority date Publication date Assignee Title
JP6340263B2 (en) * 2014-06-24 2018-06-06 ダイキョーニシカワ株式会社 Oil strainer
KR102083370B1 (en) * 2018-08-20 2020-03-02 한기벽 Heat welding apparatus for joining upper and lower cap of float, and float manufacturing method using the same

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BR0202752A (en) 2004-05-11
BR0202752B1 (en) 2011-02-08

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