JP4699736B2 - Method for winding plate members - Google Patents

Method for winding plate members Download PDF

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JP4699736B2
JP4699736B2 JP2004298054A JP2004298054A JP4699736B2 JP 4699736 B2 JP4699736 B2 JP 4699736B2 JP 2004298054 A JP2004298054 A JP 2004298054A JP 2004298054 A JP2004298054 A JP 2004298054A JP 4699736 B2 JP4699736 B2 JP 4699736B2
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plate member
punch
caulking
winding
die
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JP2006110566A (en
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静雄 木村
史朗 神山
健作 藤田
仁 福田
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Honda Motor Co Ltd
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Description

本発明は、板部材の巻締め方法に関するものである。   The present invention relates to a method for winding a plate member.

従来、自動車などの燃料タンクのように、アッパケース、ロアインナケース、ロアケースの３枚の板部品を巻締めにより締結する場合には、各々の板部品の端面を外部に露出させずにかしめ結合する技術が用いられている（例えば、特許文献１参照。）。
特開２００４−２０２５１９公報（第５頁、第７頁、図２、図７） Conventionally, when three plate parts of an upper case, a lower inner case, and a lower case are fastened together by tightening like a fuel tank of an automobile or the like, the end faces of the respective plate parts are joined without being exposed to the outside. (For example, refer to Patent Document 1).
JP-A-2004-202519 (5th page, 7th page, FIG. 2, FIG. 7)

特許文献１を次図に基づいて説明する。
図６は従来の技術の基本構成を説明する図であり、板部材の巻締めによる締結構造１００は、第１板部材１０１、第２板部材１０２及び第３板部材１０３のそれぞれに巻締めのための第１かしめ部１０４、第２かしめ部１０５及び第３かしめ部１０６を備え、第１かしめ部１０４、第２かしめ部１０５、第３かしめ部１０６の端面１０７、１０８、１０９を内側に包込むように巻締めしたものである。
なお、１１０はタンク部、１１１はシール剤である。 Patent document 1 is demonstrated based on the following figure.
FIG. 6 is a diagram for explaining the basic configuration of the prior art. In the fastening structure 100 by winding the plate member, each of the first plate member 101, the second plate member 102, and the third plate member 103 is wound. A first caulking portion 104, a second caulking portion 105, and a third caulking portion 106 for enclosing the end surfaces 107, 108, and 109 of the first caulking portion 104, the second caulking portion 105, and the third caulking portion 106. It is tightened so that
In addition, 110 is a tank part and 111 is a sealing agent.

図７は従来の技術の板部材の巻締め方法のフロー図である。なお、ＳＴ×××はステップ番号を示す。
ＳＴ１０１：準備工程として、一端に第１かしめ部１０４（符号は図６参照。以下同じ。）を備えた第１板部材１０１を用意し、一端に第２かしめ部１０５を備えた第２板部材１０２を用意し、一端に第３かしめ部１０６を備えた第３板部材１０３を用意する。
ＳＴ１０２：第１板部材１０１の第１かしめ部１０４をＬ字曲げする。 FIG. 7 is a flowchart of a conventional plate member winding method. STxxx indicates a step number.
ST101: As a preparatory step, a first plate member 101 having a first caulking portion 104 (see FIG. 6 for the same reference sign) at one end is prepared, and a second plate member having a second caulking portion 105 at one end. 102 is prepared, and a third plate member 103 having a third caulking portion 106 at one end is prepared.
ST102: The first caulking portion 104 of the first plate member 101 is bent in an L shape.

ＳＴ１０３：第１かしめ部１０４の根本部と先端部とで形成する凹部コーナーに、第２板部材１０２の第２かしめ部１０５を位置決めする。
ＳＴ１０４：第２かしめ部１０５に第１かしめ部１０４の先端部を巻締めし、かしめ結合する。
ＳＴ１０５：第１板部材１０１の巻締めした先端部を内側にして、根本部及び第２かしめ部１０５の略中央から略垂直に曲げることで、第１板部材１０１の先端部、根本部及び第２かしめ部１０５で構成する垂直部を形成する。 ST103: The second caulking portion 105 of the second plate member 102 is positioned at the concave corner formed by the root portion and the tip portion of the first caulking portion 104.
ST104: The front end portion of the first caulking portion 104 is wound around the second caulking portion 105 and caulked and joined.
ST105: The first plate member 101 is bent at a substantially vertical center from the center of the root portion and the second caulking portion 105 with the front end portion of the first plate member 101 tightened inward, so that the tip portion, the root portion, and the first portion of the first plate member 101 are bent. A vertical portion constituted by two caulking portions 105 is formed.

ＳＴ１０６：続いて、この垂直部の垂直凹部コーナーに第３板部材１０３の第３かしめ部１０６を位置決めする。
ＳＴ１０７：第３板部材１０３の第３かしめ部１０６に、第１板部材１０１の先端部、根本部及び第２かしめ部１０５で構成する垂直部を巻締め、かしめ結合する。 ST106: Subsequently, the third caulking portion 106 of the third plate member 103 is positioned at the vertical recess corner of the vertical portion.
ST107: The vertical portion formed by the tip portion, the root portion, and the second caulking portion 105 of the first plate member 101 is wound and joined to the third caulking portion 106 of the third plate member 103.

しかし、特許文献１の板部材の巻締めによる締結工程では、ＳＴ１０２、ＳＴ１０４、ＳＴ１０５、ＳＴ１０７で金型が４つ必要となり、また、工程も７工程と比較的多く、加工費が高価となる。   However, in the fastening process by winding the plate member of Patent Document 1, four molds are required in ST102, ST104, ST105, and ST107, and the process is relatively as many as 7 processes, resulting in high processing costs.

加工費を低減することを目的に巻締め工数を短縮化した技術には次に示すものがある。
図８は従来の別の基本原理を説明する図である。
（ａ）において、直角凹部１２１を有するダイ１２２と、直角凹部１２１に侵入するパンチ１２３とを準備する。
また、第１板部材１２４は先端を、先端下部１２５ａ及び先端上部１２５ｂでく字状を呈するように予め曲げたものを準備する。第２板部材１２６は先端１２７を直角に立ち上げたものを準備し、第３板部材１２８は先端１２９を水平に延ばしたものを準備する。 There are the following technologies that shorten the winding man-hours for the purpose of reducing processing costs.
FIG. 8 is a diagram for explaining another conventional basic principle.
In (a), a die 122 having a right-angle recess 121 and a punch 123 that enters the right-angle recess 121 are prepared.
The first plate member 124 is prepared by bending the tip in advance so that the tip lower portion 125a and the tip upper portion 125b have a square shape. The second plate member 126 is prepared by raising the tip 127 at a right angle, and the third plate member 128 is prepared by extending the tip 129 horizontally.

（ｂ）において、第１〜第３板部材１２４、１２６、１２８を重ねる。そして、これらをダイ１２２に押し込むと、直角凹部１２１の作用で第１板部材１２４の先端下部１２５ａは、第２板部材１２６の先端１２７に揃い、第１板部材１２４の先端上部１２５ｂは、第２板部材１２６の先端１２７に深く被さる。   In (b), the first to third plate members 124, 126, and 128 are stacked. When these are pushed into the die 122, the lower end 125a of the first plate member 124 is aligned with the front end 127 of the second plate member 126 by the action of the right-angle recess 121, and the upper end 125b of the first plate member 124 is It covers the tip 127 of the two-plate member 126 deeply.

（ｃ）において、パンチ１２３を矢印Ａのごとく下げると、第１板部材１２４の先端上部１２５ｂが曲がって、第２板部材１２６は先端１２７の図面左面に重なる。パンチ１２３を矢印Ｂのごとく上げ、第１〜第３板部材１２４、１２６、１２８をダイ１２２から外した後、矢印Ｃのごとく先端１２５ｂ、１２７などを曲げることで、巻締めが完了する。   In (c), when the punch 123 is lowered as indicated by an arrow A, the upper end portion 125b of the first plate member 124 is bent, and the second plate member 126 overlaps the left surface of the front end 127 in the drawing. After the punch 123 is lifted as indicated by arrow B and the first to third plate members 124, 126, 128 are removed from the die 122, the ends 125b, 127, etc. are bent as indicated by arrow C, whereby the winding is completed.

図６、７で示した特許文献１の技術より、工程数を短縮することができ、加工費を低減することができる。しかし、このような図８の技術には、別の欠点があることが分かった。この欠点を次図で説明する。   From the technique of Patent Document 1 shown in FIGS. 6 and 7, the number of steps can be shortened, and the processing cost can be reduced. However, it has been found that the technique of FIG. 8 has another drawback. This drawback is illustrated in the following figure.

図９は図８の欠点を説明する図である。
（ａ）で、第１板部材１２４の先端下部１２５ａの下コーナー部１３０は、曲げ加工の後に広がり気味になる。一方、燃料タンクは容器であって、第１板部材１２４と第２板部材１２６との間に抑え治具を入れることはできない。抑え治具を入れることができないことと、下コーナー部１３０が広がって鈍角（９０°超）になることと、からダイ１２２と第１板部材１２４との間に隙間ｔ１が発生すると共に、下コーナー部１３０とダイ１２２との間に隙間ｔ２が発生する。 FIG. 9 is a diagram for explaining the drawbacks of FIG.
In (a), the lower corner portion 130 of the lower end 125a of the first plate member 124 spreads out after bending. On the other hand, the fuel tank is a container, and a holding jig cannot be inserted between the first plate member 124 and the second plate member 126. A gap t1 is generated between the die 122 and the first plate member 124 from the fact that the holding jig cannot be inserted, the lower corner portion 130 widens and becomes an obtuse angle (greater than 90 °), and the lower A gap t <b> 2 is generated between the corner portion 130 and the die 122.

（ａ）のままで、加工を続けると、加工完了姿は（ｂ）の様になる。
（ｃ）は（ｂ）のＣ部拡大図であり、第１板部材１２４の上コーナー部１３１は、タンク外から見ると窪んで見え外観性が悪化する。上コーナー部１３１が所定の位置よりずれたこと及び第１板部材１２４の先端下部１２５ａがくの字に曲がったままであること、により、先端上部１２５ｂが図左へ移動し、巻き代が不十分になり、所望の巻締め性能が得られない。 If processing is continued with (a), the processing completed will be as shown in (b).
(C) is the C section enlarged view of (b), and when the upper corner part 131 of the 1st board member 124 is seen from the outside of a tank, it will be depressed and an external appearance property will deteriorate. When the upper corner portion 131 is displaced from a predetermined position and the lower end portion 125a of the first plate member 124 is still bent in a dogleg shape, the upper end portion 125b moves to the left in the figure, and the winding margin is insufficient. Thus, the desired winding performance cannot be obtained.

このように、巻締め工数を短縮する場合には、形状不良や巻締め不良が発生しやすい。これらの点を解決する必要がある。   As described above, when the winding man-hour is shortened, shape defects and winding defects are likely to occur. These points need to be resolved.

本発明は、形状不良や巻締め不良の発生を防止しつつ巻締め工数を低減することのできる技術を提供することを課題とする。   This invention makes it a subject to provide the technique which can reduce a winding man-hour, preventing generation | occurrence | production of a shape defect and winding failure.

請求項１に係る発明は、第１板部材（１２）の端部の第１かしめ部（１５）に、第２板部材（１３）の端部の第２かしめ部（１６）を重ね、第１〜第２かしめ部（１５、１６）を包み込むように巻締めする板部材の巻締め方法において、
円弧状の形状を持ち、往復移動する巻パンチ（３２）と、この巻パンチ（３２）の移動方向に直交する直交面（３４）に対して傾斜させた傾斜面（３５）を有する斜面ダイ（３１）とを準備するステップと、
前記傾斜面（３５）に載る第１傾斜部（４１）と、この第１傾斜部（４１）の先端から前記巻パンチ（３２）の移動方向に平行に延びるとともに前記第１傾斜部（４１）とで鋭角をなす第１直線部（４２）とを前記第１板部材（１２）の第１かしめ部（１５）に設けておくと共に、前記第１直線部（４２）に平行に延びる第２直線部（４４）を前記第２板部材（１３）の前記第２かしめ部（１６）の先端に設けておくステップと、
前記第１かしめ部（１５）の前記第１傾斜部（４１）を、前記斜面ダイ（３１）の前記傾斜面（３５）に位置決めすると共に、前記第２かしめ部（１６）の前記第２直線部（４４）を前記第１直線部（４２）に対して平行に位置決めするステップと、
前記巻パンチ（３２）を移動させ、前記第１直線部（４２）を円弧状に曲げ成形するステップと、
前記傾斜面（３５）に対向する下面部（４７）を有し往復移動する斜面パンチ（４６）を、前記巻パンチ（３２）に変えて準備するステップと、
前記斜面パンチ（４６）を下降させ、前記下面部（４７）で前記第１かしめ部（１５）の前記第１直線部（４２）を押付けることで、前記第１直線部（４２）と共に前記第２かしめ部（１６）の前記第２直線部（４４）を巻き込みながら曲げ成形するステップと、
前記第１傾斜部（４１）の一部が上面部（５３）に置かれる平面ダイ（５２）と、この平面ダイ（５２）の上面部（５３）に対して平行な面を有し往復移動する平面パンチ（５４）とを準備するステップと、
前記平面パンチ（５４）を前記平面ダイ（５２）に相対的に近づくように移動させ、前記第１直線部（４２）を前記第１傾斜部（４１）に対してさらに鋭角に曲げ、前記第１かしめ部（１５）の端面（２１）及び前記第２かしめ部（１６）の端面（２２）を包込むように巻締めするステップと、を備えることを特徴とする。 According to the first aspect of the present invention, the second caulking portion (16) at the end of the second plate member (13) is overlapped with the first caulking portion (15) at the end of the first plate member (12), In the winding method of the plate member that is wound so as to wrap the first caulking part (15, 16),
A slope die having an arcuate shape and a reciprocating winding punch (32) and an inclined surface (35) inclined with respect to an orthogonal surface (34) perpendicular to the moving direction of the winding punch (32) ( 31) and
First inclined portions resting before Symbol inclined surface (35) and (41), said first inclined portion extends in parallel to the moving direction of the take-punch from the distal end of the first inclined portion (41) (32) (41 And the first straight portion (42) forming an acute angle with the first crimping portion (15) of the first plate member (12) and extending in parallel with the first straight portion (42). Providing two straight portions (44) at the tip of the second caulking portion (16) of the second plate member (13);
The first inclined portion (41) of the first caulking portion (15) is positioned on the inclined surface (35) of the inclined die (31) and the second straight line of the second caulking portion (16). Positioning the part (44) parallel to the first straight part (42) ;
Moving the winding punch (32) and bending the first straight portion (42) into an arc;
A slope punch (46) having a lower surface portion (47) facing the inclined surface (35) and reciprocatingly prepared, replacing the wound punch (32);
The slope punch (46) is lowered, and the first straight part (42) of the first caulking part (15) is pressed by the lower surface part (47), thereby the first straight part (42) and the first straight part (42). Bending the second linear portion (44) of the second caulking portion (16) while winding it;
A planar die (52) in which a part of the first inclined portion (41) is placed on the upper surface portion (53), and a reciprocating movement having a plane parallel to the upper surface portion (53) of the planar die (52). Preparing a planar punch (54) to perform;
The move so as to approach relatively to the plane of the front Kitaira surface die punch (54) (52), further bending at an acute angle said first linear portion (42) to said first inclined portion (41), Winding the end surface (21) of the first caulking portion (15) and the end surface (22) of the second caulking portion (16) .

請求項２に係る発明は、斜面ダイ（３１）の傾斜面（３５）は、直交面に対して１５°〜４５°の範囲で傾斜させたことを特徴とする。 The invention according to claim 2 is characterized in that the inclined surface (35 ) of the inclined die (31) is inclined in a range of 15 ° to 45 ° with respect to the orthogonal surface.

請求項１に係る発明によれば、パンチの際に、第１傾斜部がダイの傾斜面を滑り落ちる方向の分力が第１板部材に作用する。
第１板部材でタンクの底板を構成し、分力がタンク外へ向くように設定すれば、第１かしめ部がタンク内へ移動することはない。したがって、仮にタンクであれば、外観性が良好になり、巻き代を充分に確保することができる。
この結果、請求項１によれば、形状不良や巻締め不良の発生を防止しつつ巻締め工数を低減することのできる技術を提供することができる。 According to the first aspect of the present invention, the component force in the direction in which the first inclined portion slides down the inclined surface of the die acts on the first plate member during punching.
If the bottom plate of the tank is constituted by the first plate member and set so that the component force is directed to the outside of the tank, the first caulking portion will not move into the tank. Therefore, if it is a tank, an external appearance property will become favorable and winding margin can fully be ensured.
As a result, according to the first aspect, it is possible to provide a technique capable of reducing the number of winding man-hours while preventing the occurrence of shape defects and winding defects.

請求項２に係る発明では、傾斜面は、直交面に対して１５°〜４５°の範囲で傾斜させた。
１５°未満であれば、分力が小さくなり、第１かしめ部がタンク内へ移動する可能性が生じる。また、４５°を超えると、後工程でかしめ部を直交面に平行に直すときに、加工が難しくなる。
したがって、傾斜面は、直交面に対して１５°〜４５°の範囲で傾斜させることが望ましい。 In the invention which concerns on Claim 2, the inclined surface was made to incline in the range of 15 degrees-45 degrees with respect to the orthogonal plane.
If it is less than 15 °, the component force becomes small, and the first caulking portion may move into the tank. On the other hand, when the angle exceeds 45 °, the processing becomes difficult when the caulking portion is made parallel to the orthogonal plane in a subsequent process.
Therefore, it is desirable to incline the inclined surface in the range of 15 ° to 45 ° with respect to the orthogonal surface.

本発明を実施するための最良の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。
図１は本発明に係る板部材の巻締めによる締結構造の正面断面図であり、板部材の巻締めによる締結構造１０の巻締め部１１は、第１板部材１２、第２板部材１３及び第３板部材１４の各々に巻締めのための第１かしめ部１５、第２かしめ部１６及び第３かしめ部１７を備え、これらの第１かしめ部１５、第２かしめ部１６及び第３かしめ部１７同士を締結してなるものであり、第１かしめ部１５、第２かしめ部１６及び第３かしめ部１７の端面２１、２２、２３を内側に包込むように巻締めしたものである。
なお、２４はタンク部、２５は溶着部である。 The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a front sectional view of a fastening structure by fastening a plate member according to the present invention, and a fastening part 11 of the fastening structure 10 by fastening a plate member includes a first plate member 12, a second plate member 13, and Each of the third plate members 14 includes a first caulking portion 15, a second caulking portion 16, and a third caulking portion 17 for winding, and these first caulking portion 15, second caulking portion 16 and third caulking portion 17. The parts 17 are fastened together, and the end faces 21, 22 and 23 of the first caulking part 15, the second caulking part 16 and the third caulking part 17 are wound so as to be wrapped inside.
In addition, 24 is a tank part and 25 is a welding part.

第１かしめ部１５、第２かしめ部１６及び第３かしめ部１７の端面２１、２２、２３を内側に包込むように巻締めすることで、第１板部材１２、第２板部材１３及び第３板部材１４の各々の端面２１、２２、２３に発生する錆を防止することができる。   By winding the end surfaces 21, 22, 23 of the first caulking portion 15, the second caulking portion 16, and the third caulking portion 17 so as to be wrapped inside, the first plate member 12, the second plate member 13, and the second Rust generated on each end face 21, 22, 23 of the three-plate member 14 can be prevented.

また、板部材の巻締めによる締結構造１０は、第２板部材１３に第３板部材１４を当接させたものであり、第２板部材１３に第３板部材１４を当接させることで、第３板部材１４が抜け落ちることを防止できる。   The fastening structure 10 by tightening the plate member is a structure in which the third plate member 14 is brought into contact with the second plate member 13, and the third plate member 14 is brought into contact with the second plate member 13. The third plate member 14 can be prevented from falling off.

板部材の巻締めによる締結構造（例えば図示しない燃料タンク）１０は、第１板部材１２に塗装鋼板を使用することで、第２板部材１３及び第３板部材１４の巻締め部１１を塗装鋼板の表面で覆うことができる。
また、第３板部材１４にも塗装鋼板を使用することで、巻締め部１１を含め例えば図示しない燃料タンクの表面全体を塗装鋼板の表面で覆うことができ、図示しない燃料タンクの外観の向上及び耐食性の向上を図ることができる。 A fastening structure (for example, a fuel tank (not shown)) 10 by winding plate members uses a coated steel plate for the first plate member 12 to coat the winding portions 11 of the second plate member 13 and the third plate member 14. It can be covered with the surface of a steel plate.
Further, by using a coated steel plate for the third plate member 14 as well, for example, the entire surface of the fuel tank (not shown) including the tightening portion 11 can be covered with the surface of the coated steel plate, and the appearance of the fuel tank (not shown) is improved. In addition, the corrosion resistance can be improved.

図２は本発明に係る板部材の巻締めに用いる巻パンチと斜面ダイの位置関係を説明する図であり、
巻締めを実施するためには、固定する斜面ダイ３１は、往復移動する巻パンチ３２の移動線３３に直交する直交面３４に対して角度θだけ傾斜させた傾斜面３５を有することが必要である。
なお、３６は円弧部である。
さらに、傾斜面３５は、直交面３４に対して角度θ、すなわち、１５°〜４５°の範囲で傾斜させた。１５°未満であれば、分力が小さくなり、第１かしめ部がタンク内へ移動する可能性が生じる。また、４５°を超えると、後工程でかしめ部を直交面に平行に直すときに、加工が難しくなる。 FIG. 2 is a diagram for explaining the positional relationship between a winding punch used for winding a plate member according to the present invention and a slope die,
In order to perform winding, the inclined die 31 to be fixed needs to have an inclined surface 35 inclined by an angle θ with respect to an orthogonal surface 34 orthogonal to the movement line 33 of the winding punch 32 that reciprocates. is there.
Reference numeral 36 denotes an arc portion.
Further, the inclined surface 35 is inclined with respect to the orthogonal surface 34 at an angle θ, that is, in a range of 15 ° to 45 °. If it is less than 15 °, the component force becomes small, and the first caulking portion may move into the tank. On the other hand, when the angle exceeds 45 °, the processing becomes difficult when the caulking portion is made parallel to the orthogonal plane in a subsequent process.

図３は第１板部材の第１曲げ工程を示す作用図である。
（ａ）で、位置決めした３枚の板部材４０の第１かしめ部１５の第１傾斜部４１を斜面ダイ３１の傾斜面３５に位置決めし、巻パンチ３２を矢印Ｄの如く下降させると、第１かしめ部１５の第１直線部４２が矢印Ｅの如く巻パンチ３２の円弧部３６に沿って曲がろうとする。 FIG. 3 is an operation diagram showing a first bending process of the first plate member.
In (a), when the first inclined portion 41 of the first caulking portion 15 of the three plate members 40 positioned is positioned on the inclined surface 35 of the inclined die 31, and the winding punch 32 is lowered as shown by the arrow D, The first straight portion 42 of the first caulking portion 15 tends to bend along the arc portion 36 of the winding punch 32 as indicated by an arrow E.

（ｂ）で、第１かしめ部１５の第１直線部４２が、巻パンチ３２の円弧部３６に沿って円弧曲げ部４３を形成し、第２かしめ部１６の第２直線部４４を覆う。   In (b), the first straight part 42 of the first caulking part 15 forms an arc bending part 43 along the arc part 36 of the winding punch 32 and covers the second straight part 44 of the second caulking part 16.

第１かしめ部１５の第１直線部４２を巻パンチ３２で円弧状に曲げる第１曲げ工程では、巻パンチ３２を下降させると、巻パンチ３２の円弧部３６に沿って第１かしめ部１５の第１直線部４２が曲がり円弧曲げ部４３を形成し、この円弧曲げ部４３が容易に第２かしめ部１６の第２直線部４４を覆うことができる。   In the first bending step of bending the first straight portion 42 of the first caulking portion 15 into the arc shape by the winding punch 32, when the winding punch 32 is lowered, the first caulking portion 15 is moved along the arc portion 36 of the winding punch 32. The first straight part 42 forms a curved arc bending part 43, and the arc bending part 43 can easily cover the second straight part 44 of the second caulking part 16.

また、この工程で、第１板部材１２の第１かしめ部１５の図面左側へのずれを防止するためには、斜面ダイ３１の代りに、第１直線部４２の図面左側に図示しない固定治具などを備えてもよい。   Further, in this step, in order to prevent the first caulking portion 15 of the first plate member 12 from shifting to the left side in the drawing, a fixed jig (not shown) on the left side of the first linear portion 42 in the drawing, instead of the inclined die 31. Tools and the like may be provided.

図４は第１板部材及び第２板部材の第２曲げ工程を示す作用図である。
（ａ）で、第１曲げした板部材４５を斜面ダイ３１にセットし、巻パンチ３２（図示せず。）を斜面パンチ４６に変えて、この斜面パンチ４６を矢印Ｆの如く下げることで、円弧曲げ部４３が矢印Ｇの如く押し潰される。 FIG. 4 is an operation diagram showing a second bending process of the first plate member and the second plate member.
In (a), the first bent plate member 45 is set on the slope die 31 , the winding punch 32 (not shown) is changed to the slope punch 46, and the slope punch 46 is lowered as shown by an arrow F. The arc bending portion 43 is crushed as shown by an arrow G.

（ｂ）で、斜面パンチ４６の下面部４７で第１かしめ部１５の第１直線部４２を押付けると、この第１直線部４２が密着状の曲げ部４８を形成し、この密着状の曲げ部４８が第２かしめ部１６の第２直線部４４を巻き込み、さらに第３かしめ部１７の第３直線部４９に接触し、第２曲げした板部材５０となる。   In (b), when the first straight portion 42 of the first caulking portion 15 is pressed by the lower surface portion 47 of the slope punch 46, the first straight portion 42 forms a tightly bent portion 48, and this tightly shaped The bent portion 48 entrains the second straight portion 44 of the second caulking portion 16 and further contacts the third straight portion 49 of the third caulking portion 17 to form the second bent plate member 50.

図示しない巻パンチ３２を斜面パンチ４６に変え、この斜面パンチ４６を下降させるだけで、第１かしめ部１５の第１直線部４２は、第２かしめ部１６の第２直線部４４に密着しながら第２かしめ部１６の第２直線部４４を巻き込み、第３かしめ部１７の第３直線部４９に密着して曲がることができる。   The first straight portion 42 of the first caulking portion 15 is in close contact with the second straight portion 44 of the second caulking portion 16 simply by changing the unillustrated winding punch 32 into the inclined punch 46 and lowering the inclined punch 46. The second straight portion 44 of the second caulking portion 16 can be wound and bend in close contact with the third straight portion 49 of the third caulking portion 17.

図５は第１板部材、第２板部材、第３板部材のかしめ工程を示す作用図である。
（ａ）で、第２曲げした板部材５０における第１かしめ部１５の第１傾斜部４１の一部５１を、平面ダイ５２の上面部５３に置き、平面パンチ５４を矢印Ｈの如く下降させることで、密着状の曲げ部４８が矢印Ｊの如く下がり、第１傾斜部４１が矢印Ｋの如く平面ダイ５２の上面部５３に密着する。 FIG. 5 is an operation diagram showing a caulking process of the first plate member, the second plate member, and the third plate member.
In (a), a part 51 of the first inclined portion 41 of the first caulking portion 15 in the second bent plate member 50 is placed on the upper surface portion 53 of the planar die 52, and the planar punch 54 is lowered as indicated by an arrow H. As a result, the tightly bent portion 48 is lowered as indicated by an arrow J, and the first inclined portion 41 is brought into close contact with the upper surface portion 53 of the planar die 52 as indicated by an arrow K.

（ｂ）で、板部材の巻締めによる締結構造１０は平面ダイ５２と平面パンチ５４で押えることにより、巻締め部１１を形成する。   In (b), the fastening structure 10 by winding the plate member is pressed by the flat die 52 and the flat punch 54 to form the winding portion 11.

この密着状態に第２曲げした第１板部材１２、第２板部材１３、第３板部材１４を平面ダイ５２に置き、平面パンチ５４を下降させることにより、巻締め部１１が斜め密着状態から水平密着状態になり、かしめ結合される。   The first plate member 12, the second plate member 13, and the third plate member 14 that are second bent in this close contact state are placed on the flat die 52 and the flat punch 54 is lowered, so that the winding portion 11 is brought into the oblique close contact state. It becomes a horizontal contact state and is caulked and joined.

以上、図３〜図５により、２回の曲げで、板部材の巻締めによる締結構造部を斜め密着状態にし、その後、平面ダイ５２と平面パンチ５４で水平状態にかしめ結合したので、３回金型を交換するだけで工程数の少ない締結方法とすることができる。   3 to 5, the fastening structure portion formed by winding the plate member is brought into an oblique contact state by bending twice, and thereafter, the flat die 52 and the flat punch 54 are caulked and joined in a horizontal state. A fastening method with a small number of steps can be achieved by simply exchanging the mold.

また、パンチの際に、第１傾斜部４１がダイの傾斜面を滑り落ちる方向の分力が第１板部材１２に作用する。第１板部材１２でタンクの底板を構成するとすれば、分力により、第１かしめ部１５はタンク内へ移動することはない。したがって、仮にタンクであれば、外観性が良好になり、巻き代を充分に確保することができる。
この結果、形状不良や巻締め不良の発生を防止しつつ巻締め工数を低減することのできる技術を提供することができる。 Further, during punching, a component force in a direction in which the first inclined portion 41 slides down the inclined surface of the die acts on the first plate member 12. If the first plate member 12 constitutes the bottom plate of the tank, the first caulking portion 15 does not move into the tank due to the component force. Therefore, if it is a tank, an external appearance property will become favorable and winding margin can fully be ensured.
As a result, it is possible to provide a technique capable of reducing the number of winding man-hours while preventing the occurrence of shape defects and winding defects.

尚、本発明の板部材の巻締め方法は、実施の形態では四輪車の燃料タンクに適用したが、三輪車や一般の車両に適用することは差し支えない。
また、板部材の巻締め方法を、燃料タンク以外に適用することは差し支えない。 Although the plate member winding method of the present invention is applied to a fuel tank of a four-wheeled vehicle in the embodiment, it may be applied to a tricycle or a general vehicle.
Further, the method of tightening the plate member may be applied to other than the fuel tank.

本発明の板部材の巻締め方法は、燃料タンクに好適である。   The plate member winding method of the present invention is suitable for a fuel tank.

本発明に係る板部材の巻締めによる締結構造の正面断面図である。It is front sectional drawing of the fastening structure by the winding of the board member which concerns on this invention. 本発明に係る板部材の巻締めに用いる巻パンチと斜面ダイの位置関係を説明する図である。It is a figure explaining the positional relationship of the winding punch used for winding of the plate member which concerns on this invention, and a slope die. 第１板部材の第１曲げ工程を示す作用図である。It is an effect | action figure which shows the 1st bending process of a 1st board member. 第１板部材及び第２板部材の第２曲げ工程を示す作用図である。It is an effect | action figure which shows the 2nd bending process of a 1st board member and a 2nd board member. 第１板部材、第２板部材、第３板部材のかしめ工程を示す作用図である。It is an effect | action figure which shows the caulking process of a 1st board member, a 2nd board member, and a 3rd board member. 従来の技術の基本構成を説明する図である。It is a figure explaining the basic composition of the conventional technology. 従来の技術の板部材の巻締め方法のフロー図である。It is a flowchart of the winding method of the plate member of the prior art. 従来の別の基本原理を説明する図である。It is a figure explaining another conventional basic principle. 図８の欠点を説明する図である。It is a figure explaining the fault of FIG.

符号の説明Explanation of symbols

１０…板部材の巻締めによる締結構造 、１１…巻締め部 、１２…第１板部材 、１３…第２板部材 、１５…第１かしめ部 、１６…第２かしめ部 、３１…斜面ダイ 、３２…巻パンチ 、３３…移動線 、３４…直交面 、３５…傾斜面 、４０…位置決めした３枚の板部材 、４５…第１曲げした板部材 、４６…斜面パンチ 、５０…第２曲げした板部材 、５２…平面ダイ 、５４…平面パンチ。   DESCRIPTION OF SYMBOLS 10 ... Fastening structure by winding of a plate member, 11 ... Winding part, 12 ... 1st plate member, 13 ... 2nd plate member, 15 ... 1st crimping part, 16 ... 2nd crimping part, 31 ... Slope die, 32 ... winding punch, 33 ... movement line, 34 ... orthogonal surface, 35 ... inclined surface, 40 ... three plate members positioned, 45 ... first bent plate member, 46 ... slope punch, 50 ... second bent Plate member 52: Plane die 54: Plane punch

Claims (2)

第１板部材の端部の第１かしめ部に、第２板部材の端部の第２かしめ部を重ね、第１〜第２かしめ部を包み込むように巻締めする板部材の巻締め方法において、
円弧状の形状を持ち、往復移動する巻パンチと、この巻パンチの移動方向に直交する直交面に対して傾斜させた傾斜面を有する斜面ダイとを準備するステップと、
前記傾斜面に載る第１傾斜部と、この第１傾斜部の先端から前記巻パンチの移動方向に平行に延びるとともに前記第１傾斜部とで鋭角をなす第１直線部とを前記第１板部材の第１かしめ部に設けておくと共に、前記第１直線部に平行に延びる第２直線部を前記第２板部材の前記第２かしめ部の先端に設けておくステップと、
前記第１かしめ部の前記第１傾斜部を、前記斜面ダイの前記傾斜面に位置決めすると共に、前記第２かしめ部の前記第２直線部を前記第１直線部に対して平行に位置決めするステップと、
前記巻パンチを移動させ、前記第１直線部を円弧状に曲げ成形するステップと、
前記傾斜面に対向する下面部を有し往復移動する斜面パンチを、前記巻パンチに変えて準備するステップと、
前記斜面パンチを下降させ、前記下面部で前記第１かしめ部の前記第１直線部を押付けることで、前記第１直線部と共に前記第２かしめ部の前記第２直線部を巻き込みながら曲げ成形するステップと、
前記第１傾斜部の一部が上面部に置かれる平面ダイと、この平面ダイの上面部に対して平行な面を有し往復移動する平面パンチとを準備するステップと、
前記平面パンチを前記平面ダイに相対的に近づくように移動させ、前記第１直線部を前記第１傾斜部に対してさらに鋭角に曲げ、前記第１かしめ部の端面及び前記第２かしめ部の端面を包込むように巻締めするステップと、
を備えることを特徴とする板部材の巻締め方法。 In the winding method of the plate member, the second caulking portion of the end portion of the second plate member is overlapped with the first caulking portion of the end portion of the first plate member, and the first and second caulking portions are wrapped so as to be wrapped. ,
Preparing a winding punch having an arc shape and reciprocating, and a sloped die having an inclined surface inclined with respect to an orthogonal surface orthogonal to the moving direction of the winding punch;
A first inclined portion resting before Symbol inclined surface, the first and the first straight portion forming an acute angle between the first inclined portion extends in parallel from the distal end of the first inclined portion in the moving direction of the take-punch Providing at the first caulking portion of the plate member, and providing a second straight portion extending parallel to the first straight portion at the tip of the second caulking portion of the second plate member;
Positioning the first inclined portion of the first caulking portion on the inclined surface of the inclined die and positioning the second straight portion of the second caulking portion in parallel with the first straight portion. When,
Moving the winding punch and bending the first straight portion into an arc;
Preparing a sloped punch having a lower surface facing the inclined surface and reciprocating, instead of the wound punch;
The slope punch is lowered, and the first straight portion of the first caulking portion is pressed by the lower surface portion, thereby bending the second straight portion of the second caulking portion together with the first straight portion. And steps to
Preparing a planar die in which a part of the first inclined part is placed on the upper surface part, and a planar punch having a plane parallel to the upper surface part of the planar die and reciprocating;
The planar punch is moved so as to be relatively close to the planar die, the first straight portion is bent at an acute angle with respect to the first inclined portion, and the end surface of the first caulking portion and the second caulking portion are A step of tightening to wrap the end face ;
A method of winding a plate member, comprising: 前記斜面ダイの前記傾斜面は、前記直交面に対して１５°〜４５°の範囲で傾斜させたことを特徴とする請求項１記載の板部材の巻締め方法。 Wherein the inclined surface of the inclined surface die tightening method of claim 1, wherein the plate member, characterized in that is inclined in the range of 15 ° to 45 ° relative to the orthogonal plane.
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