JP3454656B2 - Method of manufacturing metal end plate and method of manufacturing fuel tank using the same - Google Patents
Method of manufacturing metal end plate and method of manufacturing fuel tank using the sameInfo
- Publication number
- JP3454656B2 JP3454656B2 JP01673497A JP1673497A JP3454656B2 JP 3454656 B2 JP3454656 B2 JP 3454656B2 JP 01673497 A JP01673497 A JP 01673497A JP 1673497 A JP1673497 A JP 1673497A JP 3454656 B2 JP3454656 B2 JP 3454656B2
- Authority
- JP
- Japan
- Prior art keywords
- end plate
- plate
- tank body
- metal
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属板から鏡板を
製造する方法と、この鏡板を用いて燃料タンクを製造す
る方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an end plate from a metal plate and a method for manufacturing a fuel tank using the end plate.
【０００２】[0002]
【従来の技術】従来、トラック等の車両に搭載される直
方体状の燃料タンクとして、角筒状に形成された鋼板製
のタンク本体の端部に鋼板製の鏡板を突合せ、この状態
で上記突合せ部を溶接することにより製造された燃料タ
ンクが知られている。この燃料タンクの鏡板は比較的深
い角形箱状に形成されるため、深絞り加工により成形さ
れる。2. Description of the Related Art Conventionally, as a rectangular parallelepiped fuel tank to be mounted on a vehicle such as a truck, a steel plate end plate is butted to an end portion of a steel plate tank body formed in a rectangular tube shape, and in this state, the above butted Fuel tanks manufactured by welding parts are known. Since the end plate of this fuel tank is formed in a relatively deep rectangular box shape, it is formed by deep drawing.
【０００３】[0003]
【発明が解決しようとする課題】近年、燃費の向上等を
目的とする車両の軽量化を図るため、燃料タンクをアル
ミニウム板又はアルミニウム合金板により製造する方法
が試みられている。しかし、鋼板の伸び率は約３０％で
あるのに対し、アルミニウム板等の伸び率は約２０％と
小さいため、アルミニウム板等から深絞り加工により角
形箱状の鏡板を成形すると、平板素材の打抜き寸法を十
分に調整しても、平板素材の四隅の材料余り部により圧
縮残留応力が鏡板の側壁コーナ部の周縁に発生し、次工
程の溶接時の熱により変形する恐れがあった。この結
果、燃料タンクの精度が低下し、燃料タンクの品質確保
が難しい問題点があった。本発明の目的は、深絞り加工
により鏡板に発生する圧縮残留応力を低減できる、金属
製鏡板の製造方法を提供することにある。本発明の別の
目的は、溶接後の燃料タンクの歪みを低減できる、金属
製鏡板を用いた燃料タンクの製造方法を提供することに
ある。In recent years, a method of manufacturing a fuel tank with an aluminum plate or an aluminum alloy plate has been attempted in order to reduce the weight of a vehicle for the purpose of improving fuel efficiency. However, the elongation rate of a steel plate is about 30%, whereas the elongation rate of an aluminum plate or the like is small at about 20%. Therefore, when a rectangular box-shaped end plate is formed from an aluminum plate or the like by deep drawing, Even if the punching dimension is adjusted sufficiently, the residual material at the four corners of the flat plate material may cause compressive residual stress at the peripheral edge of the side wall corner of the end plate, which may deform due to heat during welding in the next step. As a result, the accuracy of the fuel tank deteriorates, and it is difficult to ensure the quality of the fuel tank. An object of the present invention is to provide a method of manufacturing a metal end plate that can reduce the compressive residual stress generated in the end plate by deep drawing. Another object of the present invention is to provide a method of manufacturing a fuel tank using a metal end plate, which can reduce distortion of the fuel tank after welding.
【０００４】[0004]
【課題を解決するための手段】請求項１に係る発明は、
図１に示すように、金属板から所定の形状の平板素材２
１を打抜く工程と、角形凹部２３ａを有しかつ角形凹部
２３ａの口元コーナ部に案内突起２３ｂが形成されたダ
イス２３の上面に角形凹部２３ａを覆うように平板素材
２１を載せる工程と、角形凹部２３ａに遊挿可能な角柱
状に形成されかつ案内突起２３ｂに対向する角柱コーナ
部に沿って逃げ溝２４ａが形成されたポンチ２４を角形
凹部２３ａに押込んで平板素材２１を深絞り加工するこ
とにより角形箱状の鏡板１４を成形する工程とを含む金
属製鏡板の製造方法である。その特徴ある構成は、平板
素材２１の深絞り加工時に平板素材２１の四隅の材料余
り部２１ｂが案内突起２３ｂにより案内され、折畳まれ
ながら逃げ溝２４ａ内に進入して余肉部１４ｃを形成す
ることを特徴とする。この請求項１に係る金属製鏡板の
製造方法では、打抜かれた平板素材２１を深絞り加工す
ると、平板素材２１の四隅の材料余り部２１ｂが鏡板１
４の内側に逃げて余肉部１４ｃとなるので、鏡板１４に
発生する圧縮残留応力を低減できる。The invention according to claim 1 is
As shown in FIG. 1, a flat plate material 2 of a predetermined shape is formed from a metal plate.
Punching 1 and placing the flat plate material 21 on the upper surface of the die 23 having the square recess 23a and the guide projection 23b formed at the corner of the square recess 23a so as to cover the square recess 23a; To deep-draw the flat plate material 21 by pushing the punch 24, which is formed into a prismatic shape that can be loosely inserted into the recessed portion 23a and has a relief groove 24a formed along a prismatic corner portion facing the guide projection 23b, into the prismatic recessed portion 23a. And a step of forming the rectangular box-shaped end plate 14 according to the present invention. The characteristic configuration is that when the plate material 21 is deep-drawn, the material surplus portions 21b at the four corners of the plate material 21 are guided by the guide protrusions 23b and, while being folded, enter the escape groove 24a to form the excess thickness portion 14c. It is characterized by doing. In the method for manufacturing a metal end plate according to the first aspect of the present invention, when the punched flat plate material 21 is deep-drawn, the material surplus portions 21b at the four corners of the flat plate material 21 become the end plate 1
Since it escapes to the inner side of 4 and becomes the excess thickness portion 14c, the compressive residual stress generated in the end plate 14 can be reduced.
【０００５】請求項２に係る発明は、図５〜図８に示す
ように、角筒状に形成された金属製のタンク本体１３の
端部に金属製のバッフルプレート１６をその一部が突出
するように挿入する工程と、請求項１記載の鏡板１４を
バッフルプレート１６の突出部に嵌入して鏡板１４をタ
ンク本体１３の端部に突合せる工程と、タンク本体１３
と鏡板１４との突合せ部をバッフルプレート１６ととも
に溶接する工程と、タンク本体１３に溶接された鏡板１
４の側壁コーナ部１４ｄの折畳まれた余肉部１４ｃを互
いに溶接する工程とを含む金属製鏡板を用いた燃料タン
クの製造方法である。この請求項２に係る金属製鏡板を
用いた燃料タンクの製造方法では、タンク本体１３と鏡
板１４との突合せ部をバッフルプレート１６ともに溶接
するときに、この溶接長さが長く比較的長い溶接時間を
必要とするため、鏡板１４に熱伸びが生じるけれども、
この熱伸びが鏡板１４の側壁コーナ部１４ｄの余肉部１
４ｃにて吸収される。According to the second aspect of the present invention, as shown in FIGS. 5 to 8, a metal baffle plate 16 is partially projected from the end of the metal tank body 13 formed in a rectangular tube shape. And the step of inserting the end plate 14 according to claim 1 into the protruding portion of the baffle plate 16 to bring the end plate 14 into contact with the end portion of the tank body 13.
Of welding the abutting portion of the baffle plate 16 with the end plate 1 and the end plate 1 welded to the tank body 13
4 is a method of manufacturing a fuel tank using a metal end plate, which includes a step of welding the folded extra thickness portions 14c of the side wall corner portions 14d to each other. In the method for manufacturing a fuel tank using the metal end plate according to the second aspect of the present invention, when the abutting portion between the tank body 13 and the end plate 14 is welded together with the baffle plate 16, the welding length is long and the welding time is relatively long. Therefore, although heat expansion occurs in the end plate 14,
This thermal expansion is caused by the excess thickness portion 1 of the side wall corner portion 14d of the end plate 14.
It is absorbed at 4c.
【０００６】請求項３に係る発明は、図５〜図８に示す
ように、請求項１記載の鏡板１４に金属製のバッフルプ
レート１６をその一部が突出するように挿入する工程
と、角筒状に形成された金属製のタンク本体１３の端部
にバッフルプレート１６の突出部を挿入して鏡板１４を
タンク本体１３の端部に突合せる工程と、タンク本体１
３と鏡板１４との突合せ部をバッフルプレート１６とと
もに溶接する工程と、タンク本体１３に溶接された鏡板
１４の側壁コーナ部１４ｄの折畳まれた余肉部１４ｃを
互いに溶接する工程とを含む金属製鏡板を用いた燃料タ
ンクの製造方法である。この請求項３に係る金属製鏡板
を用いた燃料タンクの製造方法では、上記請求項２に係
る燃料タンクの製造方法と同様に、溶接による熱伸びが
鏡板１４の側壁コーナ部１４ｄの余肉部１４ｃにて吸収
される。The invention according to claim 3 is, as shown in FIGS. 5 to 8, a step of inserting a metal baffle plate 16 into the end plate 14 according to claim 1 so that a part thereof is projected, A step of inserting the protruding portion of the baffle plate 16 into the end portion of the tubular metal tank body 13 to bring the end plate 14 into contact with the end portion of the tank body 13;
3 including a step of welding a butt portion of the end plate 3 and the end plate 14 together with the baffle plate 16 and a step of welding the folded excess thickness portion 14c of the side wall corner portion 14d of the end plate 14 welded to the tank body 13 to each other. This is a method for manufacturing a fuel tank using a mirror plate. In the method of manufacturing the fuel tank using the metal end plate according to the third aspect of the present invention, as in the case of the method of manufacturing the fuel tank according to the second aspect, the thermal expansion due to welding causes the excess thickness of the side wall corner portion 14d of the end plate 14 to increase. It is absorbed at 14c.
【０００７】請求項４に係る発明は、請求項２又は３に
係る発明であって、更に図６及び図７に示すように、タ
ンク本体１３と鏡板１４との突合せ部をバッフルプレー
ト１６とともに溶接するときに、先ず第１辺３１を溶接
し、次いで第１辺３２に対向する第３辺３３を溶接し、
次に第２辺３２又は第４辺３４を溶接し、更に第２辺３
２又は第４辺３４に対向する第４辺３４又は第２辺３２
を溶接することを特徴とする。この請求項４に係る金属
製鏡板を用いた燃料タンクの製造方法では、タンク本体
１３と鏡板１４との突合せ部のうち互いに対向する２つ
の辺３１，３３を溶接した後に、他の互いに対向する２
つの辺３２，３４を溶接することになるので、燃料タン
ク１１の変形を更に低減できる。The invention according to claim 4 is the invention according to claim 2 or 3, further, as shown in FIGS. 6 and 7, the abutting portion between the tank body 13 and the end plate 14 is welded together with the baffle plate 16. When welding, the first side 31 is first welded, and then the third side 33 facing the first side 32 is welded,
Next, the second side 32 or the fourth side 34 is welded, and the second side 3
4th side 34 or 2nd side 32 which opposes 2 or 4th side 34
Is welded. In the method of manufacturing a fuel tank using the metal end plate according to the present invention, the two sides 31 and 33 of the abutting portion of the tank body 13 and the end plate 14 that face each other are welded, and then the other sides face each other. Two
Since the three sides 32 and 34 are welded, the deformation of the fuel tank 11 can be further reduced.
【０００８】[0008]
【発明の実施の形態】次に本発明の実施の形態を図面に
基づいて詳しく説明する。図１〜図９に示すように、本
発明の燃料タンク１１は直方体状に形成され、一対の取
付バンド１２，１２によりトラック１０のシャシフレー
ム１０ａに取付けられる。この燃料タンク１１は角筒状
に形成されたタンク本体１３と、タンク本体１３の両端
にそれぞれ突合せて溶着されタンク本体１３の両端を閉
塞する角形箱状の一対の鏡板１４，１４と、タンク本体
１３及び鏡板１４，１４の突合せ部に位置するようにタ
ンク本体１３及び鏡板１４，１４内にそれぞれ挿入され
た一対のバッフルプレート１６，１６とを備える（図４
〜図６及び図９）。タンク本体１３、鏡板１４及びバッ
フルプレート１６はこの実施の形態ではアルミニウム板
又はアルミニウム合金板により形成される。BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 9, the fuel tank 11 of the present invention is formed in a rectangular parallelepiped shape and is attached to the chassis frame 10a of the truck 10 by a pair of attachment bands 12 and 12. The fuel tank 11 includes a tank main body 13 formed in a rectangular tube shape, a pair of prismatic box-shaped end plates 14 and 14 that are welded to both ends of the tank main body 13 in abutting manner to close both ends of the tank main body 13, and the tank main body. 13 and a pair of baffle plates 16 and 16 respectively inserted in the tank body 13 and the end plates 14 and 14 so as to be positioned at the abutting portions of the end plates 13 and 14 and 14 (FIG. 4).
(FIGS. 6 and 9). The tank body 13, the end plate 14, and the baffle plate 16 are formed of an aluminum plate or an aluminum alloy plate in this embodiment.
【０００９】鏡板１４は矩形の底壁１４ａ（図１
（ｃ）、図４〜図６）と、この底壁１４ａの各辺からそ
れぞれ立上がり比較的高さの高い４つの側壁１４ｂ（図
１（ｃ）、図３〜図６及び図８）と、各側壁１４ｂ間の
側壁コーナ部１４ｄから内側に突設された４つの余肉部
１４ｃ（図１（ｃ）、図３、図４及び図６〜図８）とを
有する。底壁１４ａ表面には底壁１４ａを補強するため
の略Ｘ字状の補強凹部１４ｅが形成される（図５）。ま
た各余肉部１４ｃの一端は鏡板１４の開口端から側壁コ
ーナ部１４ｄに沿って所定の距離だけ鏡板１４内に入っ
た箇所に位置し、他端は底壁１４ａ近傍に達する（図１
（ｃ）、図４及び図６）。これらの余肉部は２つに折畳
まれた状態で一端から他端に向うに従って次第に突出長
が短くなるようにそれぞれ突設される（図１（ｃ）、図
３、図４及び図６〜図８）。鏡板１４の開口端から余肉
部１４ｃの一端までの間にはバッフルプレート１６が挿
入可能に構成される（図６）。The end plate 14 has a rectangular bottom wall 14a (see FIG. 1).
(C), FIG. 4 to FIG. 6), and four side walls 14b (FIG. 1 (c), FIG. 3 to FIG. 6 and FIG. 8) rising from each side of the bottom wall 14a and having a relatively high height. It has four extra thickness portions 14c (FIG. 1 (c), FIG. 3, FIG. 4, and FIG. 6 to FIG. 8) protruding inward from the side wall corner portions 14d between the side walls 14b. A substantially X-shaped reinforcing recess 14e for reinforcing the bottom wall 14a is formed on the surface of the bottom wall 14a (FIG. 5). Further, one end of each extra thickness portion 14c is located at a position that enters the end plate 14 by a predetermined distance from the opening end of the end plate 14 along the side wall corner 14d, and the other end reaches the vicinity of the bottom wall 14a (FIG. 1).
(C), FIGS. 4 and 6). These extra portions are provided so as to project in such a manner that the protruding length becomes gradually shorter from one end to the other end in a state of being folded in two (FIG. 1 (c), FIG. 3, FIG. 4, and FIG. 6). ~ Fig. 8). A baffle plate 16 can be inserted between the open end of the end plate 14 and one end of the extra thickness portion 14c (FIG. 6).
【００１０】更にバッフルプレート１６は鏡板１４の底
壁１４ａより僅かに小さい矩形の仕切部１６ａと、この
仕切部１６ａの各辺からそれぞれ立上がり比較的高さの
低い４つのフランジ部１６ｂとを有する（図５〜図７及
び図９）。一対のバッフルプレート１６，１６をタンク
本体１３及び鏡板１４，１４内に挿入することにより、
タンク本体１３及び鏡板１４，１４内が３つの小室１１
ａに区画される（図９）。また仕切部１６ａには鉛直方
向に延びる複数の長孔１６ｃ（図５及び図７）がそれぞ
れ形成され、これらの長孔１６ｃにより上記３つの小室
１１ａが連通される。バッフルプレート１６はトラック
１０の急発進、急制動又は急旋回等による燃料タンク１
１内の燃料の流動を抑制するために設けられる。Further, the baffle plate 16 has a rectangular partition 16a which is slightly smaller than the bottom wall 14a of the end plate 14 and four flanges 16b which respectively rise from the respective sides of the partition 16a and which are relatively low in height ( 5 to 7 and 9). By inserting the pair of baffle plates 16 and 16 into the tank body 13 and the end plates 14 and 14,
Three small chambers 11 inside the tank body 13 and end plates 14 and 14
It is divided into a (FIG. 9). Further, a plurality of elongated holes 16c (FIGS. 5 and 7) extending in the vertical direction are respectively formed in the partition portion 16a, and these three small chambers 11a communicate with each other by these elongated holes 16c. The baffle plate 16 is used for the fuel tank 1 when the truck 10 suddenly starts, suddenly brakes, or suddenly turns.
It is provided in order to suppress the flow of the fuel in 1.
【００１１】このように構成された鏡板の製造方法を図
１〜図４に基づいて説明する。先ず所定の厚さのアルミ
ニウム板又はアルミニウム合金板から図示しないプレス
抜き型にて所定の形状の平板素材２１を打抜く（図１
（ａ））。この打抜かれた平板素材２１は長方形の板の
四隅を切り落した形状に形成され、各四隅にはそれぞれ
深さの浅い切欠き部２１ａを有する材料余り部２１ｂが
形成される。これらの切欠き部２１ａは、後述する深絞
り加工後の余肉部１４ｃの一端が鏡板１４の開口端から
側壁コーナ部１４ｄに沿って所定の距離だけ鏡板１４内
に入った箇所に位置させるために形成される（図１
（ｃ）及び図４）。A method of manufacturing the end plate thus constructed will be described with reference to FIGS. First, a flat plate material 21 having a predetermined shape is punched from an aluminum plate or an aluminum alloy plate having a predetermined thickness with a press punching die (not shown) (see FIG. 1).
(A)). The punched flat plate material 21 is formed in a shape in which four corners of a rectangular plate are cut off, and each of the four corners is formed with a material remainder portion 21b having a shallow notch portion 21a. These cutouts 21a are located at a position where one end of a deep-drawing portion 14c after deep drawing, which will be described later, enters the end plate 14 by a predetermined distance from the opening end of the end plate 14 along the side wall corner 14d. Formed in (Fig. 1
(C) and FIG. 4).
【００１２】次に上記平板素材２１をダイス２３とポン
チ２４を備えた深絞り型２２により深絞り加工する（図
１（ｂ）、図１（ｃ）、図２及び図３）。ダイス２３は
鏡板１４の底壁１４ａに相応する形状に形成されかつ鏡
板１４の側壁１４ｂの高さより深い角形凹部２３ａを有
する。この角形凹部２３ａの４つの口元コーナ部には案
内突起２３ｂがそれぞれ形成される。またポンチ２４は
上記角形凹部２３ａに平板素材２１のほぼ板厚分だけギ
ャップを設けて遊挿可能な角柱状に形成され、かつ上記
案内突起２３ｂに対向する角柱コーナ部に沿って逃げ溝
２４ｂがそれぞれ形成される。Next, the flat plate material 21 is deep-drawn by a deep-drawing die 22 having a die 23 and a punch 24 (FIGS. 1 (b), 1 (c), 2 and 3). The die 23 is formed in a shape corresponding to the bottom wall 14a of the mirror plate 14 and has a rectangular recess 23a deeper than the height of the side wall 14b of the mirror plate 14. Guide protrusions 23b are formed at the four corners of the square recess 23a. Further, the punch 24 is formed into a prismatic shape which can be loosely inserted by providing a gap in the prismatic recess 23a by substantially the plate thickness of the flat plate material 21, and the escape groove 24b is formed along the prismatic corner portion facing the guide projection 23b. Formed respectively.
【００１３】上記平板素材２１を深絞り型２２のダイス
２３の上面に角形凹部２３ａを覆うように載せ（図１
（ｂ））、この状態でポンチ２４を角形凹部２３ａに所
定の圧力で押込むと（図１（ｃ））、平板素材２１は角
形箱状の鏡板１４に成形される（図１（ｃ）及び図
４）。このとき平板素材２１の四隅の材料余り部２１ｂ
が角形凹部２３ａの案内突起２３ｂにより案内され、２
つに折畳まれながらポンチ２４の逃げ溝２４ａ内に進入
して余肉部１４ｃが形成される（図３）。このように材
料余り部２１ｂを余肉部１４ｃとして鏡板１４の内側に
逃したので、鏡板１４に発生する圧縮残留応力を低減で
きる。The flat plate material 21 is placed on the upper surface of the die 23 of the deep drawing die 22 so as to cover the rectangular recess 23a (see FIG. 1).
(B)) In this state, when the punch 24 is pushed into the rectangular recess 23a with a predetermined pressure (FIG. 1 (c)), the flat plate material 21 is formed into the rectangular box-shaped end plate 14 (FIG. 1 (c)). And FIG. 4). At this time, the material remainders 21b at the four corners of the flat plate material 21
Is guided by the guide protrusion 23b of the rectangular recess 23a,
While being folded into one, it enters into the escape groove 24a of the punch 24 to form a surplus portion 14c (FIG. 3). In this way, since the material surplus portion 21b is made to escape to the inside of the end plate 14 as the surplus portion 14c, the compressive residual stress generated in the end plate 14 can be reduced.
【００１４】このように製造された鏡板を用いた燃料タ
ンクの製造方法を図５〜図８に基づいて説明する。予め
タンク本体１３をアルミニウム板又はアルミニウム合金
板等を角筒状に折曲げてシーム溶接することにより、或
は引抜き加工にて形成された角パイプを所定の長さに切
断することにより成形する（図５）。またバッフルプレ
ート１６をアルミニウム板又はアルミニウム合金板を所
定の形状に打抜いた後、通常の絞り型（図示せず）にて
絞り加工することにより成形する。バッフルプレート１
６を通常の絞り型にて絞り加工しても、フランジ部１６
ｂの高さが比較的低いので、バッフルプレート１６に発
生する圧縮残留応力は小さく、溶接により熱が加わって
も殆ど変形しない。A method of manufacturing a fuel tank using the thus manufactured end plate will be described with reference to FIGS. The tank body 13 is previously formed by bending an aluminum plate or an aluminum alloy plate into a rectangular tube shape and seam welding, or by cutting a square pipe formed by drawing into a predetermined length ( Figure 5). Further, the baffle plate 16 is formed by punching an aluminum plate or an aluminum alloy plate into a predetermined shape and then drawing it with a normal drawing die (not shown). Baffle plate 1
Even if 6 is drawn with a normal drawing die, the flange 16
Since the height of b is relatively low, the compressive residual stress generated in the baffle plate 16 is small and hardly deforms even when heat is applied by welding.
【００１５】先ずタンク本体１３の両端に一対のバッフ
ルプレート１６，１６をそれぞれ挿入する。このときバ
ッフルプレート１６，１６の一部がタンク本体１３の両
端からそれぞれ突出するように挿入し、この状態で溶接
等により一時的に固定する。次いで一対の鏡板１４，１
４を一対のバッフルプレート１６，１６の突出部に嵌入
してタンク本体１３の両端に突合せる（図６）。次に固
定治具２６によりタンク本体１３と鏡板１４とを突合わ
せた状態で固定し、ガスシールドアーク溶接機２７（イ
ナートガスアーク溶接機）にて上記突合せ部をバッフル
プレート１６とともに溶接する。First, a pair of baffle plates 16 and 16 are inserted into both ends of the tank body 13. At this time, parts of the baffle plates 16 and 16 are inserted so as to project from both ends of the tank body 13, and in this state, they are temporarily fixed by welding or the like. Next, a pair of end plates 14, 1
4 is fitted into the protruding portions of the pair of baffle plates 16 and 16 and abutted on both ends of the tank body 13 (FIG. 6). Next, the tank main body 13 and the end plate 14 are fixed to each other by the fixing jig 26, and the gas shield arc welder 27 (inert gas arc welder) welds the butted portion together with the baffle plate 16.
【００１６】この溶接機２７は図６及び図８に詳しく示
すように、先端が上記突合せ部又は鏡板１４の側壁コー
ナ部１４ｄに対向しローラ（図示せず）により順次送り
出される細径の裸ワイヤ２７ａと、このワイヤ２７ａに
嵌入されワイヤ２７ａに給電するチップ２７ｂと、ワイ
ヤ２７ａ及びチップ２７ｂを覆う大径のノズル２７ｃと
を備える。ノズル２７ｃからはアルゴンガス・ヘリウム
ガス・炭酸ガス等の不活性ガス・中性ガス等が噴射さ
れ、このガスにより裸ワイヤ２７ａのアークと溶接部２
７ｄとが大気から遮断される。この結果、溶接部２７ｄ
に酸化物・窒化物が生成しないので、溶接部２７ｄの材
質は劣化せず、また溶融金属の還元性を高めることがで
きる。またガスシールドアーク溶接機２７のうち、溶接
部２７ｄの材質（アルミニウム又はアルミニウム合金）
とほぼ同種の裸ワイヤ２７ａを用いるミグ溶接機により
溶接することが好ましい。As shown in detail in FIGS. 6 and 8, the welding machine 27 has a thin wire bare wire whose tip faces the abutting portion or the side wall corner portion 14d of the end plate 14 and is sequentially fed by a roller (not shown). 27a, a tip 27b fitted into the wire 27a to feed the wire 27a, and a large-diameter nozzle 27c that covers the wire 27a and the tip 27b. Inert gas such as argon gas, helium gas, carbon dioxide gas, and neutral gas are jetted from the nozzle 27c, and the arc of the bare wire 27a and the weld 2
7d is cut off from the atmosphere. As a result, the welded portion 27d
Since no oxides or nitrides are generated, the material of the welded portion 27d does not deteriorate, and the reducing property of the molten metal can be improved. Further, in the gas shield arc welder 27, the material of the welded portion 27d (aluminum or aluminum alloy)
It is preferable to weld with a MIG welding machine using a bare wire 27a of almost the same type as.
【００１７】タンク本体１３と鏡板１４との突合せ部を
バッフルプレート１６ともに溶接するとき、この溶接長
さが長く比較的長い溶接時間を必要とするため、鏡板１
４に熱伸びが生じる。しかし、この熱伸びは鏡板１４の
側壁コーナ部１４ｄの余肉部１４ｃにて吸収され、その
後、鏡板１４の側壁コーナ部１４ｄの折畳まれた余肉部
１４ｃをガスシールドアーク溶接機２７にて互いに溶接
する。この結果、燃料タンク１１の歪みを低減できる。
またタンク本体１３と鏡板１４との突合せ部の溶接は図
７に詳しく示すように、−−−の順に行う。即
ち第１辺３１を溶接した後に、第１辺３１に対向する第
３辺３３を溶接し、次に第２辺３２を溶接し、更に第２
辺３２に対向する第４辺３４を溶接する。このような順
序で溶接すると、タンク本体１３と鏡板１４との角形リ
ング状の突合せ部のうち互いに対向する２つの辺３１，
３３を溶接した後に、他の互いに対向する２つの辺３
２，３４を溶接することになるので、燃料タンク１１の
変形を更に低減できる。When the abutting portion of the tank body 13 and the end plate 14 is welded together with the baffle plate 16, the welding length is long and a relatively long welding time is required.
Thermal expansion occurs in No. 4. However, this thermal expansion is absorbed by the excess thickness portion 14c of the side wall corner portion 14d of the mirror plate 14, and then the folded excess thickness portion 14c of the side wall corner portion 14d of the mirror plate 14 is processed by the gas shield arc welding machine 27. Weld each other. As a result, the distortion of the fuel tank 11 can be reduced.
Further, the welding of the abutting portion between the tank body 13 and the end plate 14 is performed in the order of ---, as shown in detail in FIG. That is, after welding the first side 31, the third side 33 facing the first side 31 is welded, then the second side 32 is welded, and then the second side 32 is welded.
The fourth side 34 facing the side 32 is welded. When welding is performed in this order, two sides 31 of the square ring-shaped butt portion of the tank body 13 and the end plate 14 that face each other,
After welding 33, the other two opposite sides 3
Since the welding of the fuel tanks 2 and 34 is performed, the deformation of the fuel tank 11 can be further reduced.
【００１８】なお、この実施の形態では、タンク本体の
両端に一対のバッフルプレートをそれぞれ挿入した後
に、一対の鏡板を一対のバッフルプレートの突出部に嵌
入して、一対の鏡板をタンク本体の両端に突合せたが、
一対の鏡板に一対のバッフルプレートを挿入し、タンク
本体の両端に一対のバッフルプレートの突出部を挿入し
て一対の鏡板をタンク本体の端部に突合せてもよい。ま
た、この実施の形態では、タンク本体と鏡板との突合せ
部を溶接するときに、先ず第１辺を溶接した後に、第１
辺に対向する第３辺を溶接し、次に第２辺を溶接し、更
に第２辺に対向する第４辺を溶接したが、先ず第１辺を
溶接した後に、第１辺に対向する第３辺を溶接し、次に
第４辺を溶接し、更に第４辺に対向する第２辺を溶接し
てもよい。更に、この実施の形態では、タンク本体、鏡
板及びバッフルプレートをアルミニウム板又はアルミニ
ウム合金板により形成したが、ステンレス鋼板又はその
他の鋼板等により形成してもよい。In this embodiment, after the pair of baffle plates are inserted into both ends of the tank body, the pair of end plates are fitted into the protrusions of the pair of baffle plates to attach the pair of end plates to both ends of the tank body. But,
The pair of baffle plates may be inserted into the pair of end plates, the protrusions of the pair of baffle plates may be inserted into both ends of the tank main body, and the pair of end plates may be abutted against the end of the tank main body. In addition, in this embodiment, when welding the abutting portion of the tank body and the end plate, first the first side is welded, and then the first side is welded.
The third side opposite the side was welded, then the second side was welded, and the fourth side opposite the second side was welded, but first the first side was welded and then the first side was opposed. The third side may be welded, then the fourth side may be welded, and the second side opposite to the fourth side may be welded. Further, in this embodiment, the tank body, the mirror plate and the baffle plate are formed of an aluminum plate or an aluminum alloy plate, but they may be formed of a stainless steel plate or another steel plate.
【００１９】[0019]
【発明の効果】以上述べたように、本発明によれば、金
属板から所定の形状の平板素材を打抜き、角形凹部の口
元コーナ部に案内突起が形成されたダイスの上面に角形
凹部を覆うように平板素材を載せ、角柱コーナ部に沿っ
て逃げ溝が形成された角柱状のポンチを角形凹部に押込
んで平板素材を深絞り加工することにより角形箱状の鏡
板を成形したので、打抜かれた平板素材を深絞り加工す
るときに、平板素材の四隅の材料余り部がダイスの角形
凹部の案内突起により案内され、折畳まれながらポンチ
の逃げ溝内に進入して余肉部が形成される。この結果、
材料余り部が余肉部として鏡板の内側に逃げることにな
るので、鏡板に発生する圧縮残留応力を低減できる。As described above, according to the present invention, a flat plate material having a predetermined shape is punched out from a metal plate, and the rectangular recess is covered on the upper surface of a die having guide projections formed at the corner corners of the rectangular recess. The flat plate material is placed as shown in the figure, and a rectangular box-shaped end plate is formed by pushing a rectangular column-shaped punch with relief grooves formed along the rectangular column corner into the rectangular recess and deep-drawing the flat plate material. When deep-drawing a flat plate material, the material remainders at the four corners of the flat plate material are guided by the guide projections of the rectangular recesses of the die, and while folding, enter the relief groove of the punch to form a surplus part. It As a result,
Since the excess material portion escapes to the inside of the end plate as a surplus portion, the compressive residual stress generated in the end plate can be reduced.
【００２０】また金属製のタンク本体の端部に金属製の
バッフルプレートをその一部が突出するように挿入し、
上記鏡板をバッフルプレートの突出部に嵌入して鏡板を
タンク本体の端部に突合せ、タンク本体と鏡板との突合
せ部をバッフルプレートとともに溶接し、更に鏡板の側
壁コーナ部の折畳まれた余肉部を互いに溶接したので、
タンク本体と鏡板との突合せ部をバッフルプレートとも
に溶接するときに、この溶接長さ及び溶接時間が比較的
長く鏡板に熱伸びが生じても、この熱伸びが鏡板の側壁
コーナ部の余肉部にて吸収される。この結果、上記熱伸
びが吸収された後に鏡板の側壁コーナ部の余肉部が溶接
されるので、燃料タンクの歪みを低減できる。Further, a metal baffle plate is inserted into an end portion of the metal tank main body so that a part thereof projects,
The end plate is inserted into the protruding portion of the baffle plate, the end plate of the tank body is abutted against the end portion of the tank body, the abutting portion between the tank body and the end plate is welded together with the baffle plate, and the side wall corner portion of the end plate has a folded extra thickness. Since the parts were welded together,
When the tank body and the end plate are welded together at the baffle plate together with the baffle plate, even if the welding length and welding time are relatively long and thermal expansion occurs in the end plate, this thermal expansion causes excess thickness at the side wall corners of the end plate. Is absorbed in. As a result, the excess thickness of the side wall corners of the end plate is welded after the thermal expansion is absorbed, so that distortion of the fuel tank can be reduced.
【００２１】また上記鏡板に金属製のバッフルプレート
をその一部が突出するように挿入し、金属製のタンク本
体の端部にバッフルプレートの突出部を挿入して鏡板を
タンク本体の端部に突合せ、タンク本体と鏡板との突合
せ部をバッフルプレートとともに溶接し、更に鏡板の側
壁コーナ部の折畳まれた余肉部を互いに溶接しても、上
記と同様の効果が得られる。更にタンク本体と鏡板との
突合せ部をバッフルプレートとともに溶接するときに、
第１辺、第１辺に対向する第３辺、第２辺又は第４辺、
第２辺又は第４辺に対向する第４辺又は第２辺の順に溶
接すれば、上記突合せ部のうち互いに対向する２つの辺
を溶接した後に、他の互いに対向する２つの辺を溶接す
ることになるので、燃料タンクの変形を更に低減でき
る。Further, a metal baffle plate is inserted into the end plate so that a part thereof projects, and a protruding portion of the baffle plate is inserted into an end portion of the metal tank main body so that the end plate of the tank main body ends. The same effect as above can be obtained by butt-joining, welding the abutting portion of the tank body and the end plate together with the baffle plate, and further welding the folded extra thickness parts of the side wall corners of the end plate to each other. Furthermore, when welding the abutting part of the tank body and the end plate with the baffle plate,
A first side, a third side facing the first side, a second side or a fourth side,
If the fourth side or the second side facing the second side or the fourth side is welded in this order, the two sides facing each other of the butt portion are welded, and then the other two sides facing each other are welded. Therefore, the deformation of the fuel tank can be further reduced.
【図１】本発明一実施形態の金属製鏡板の製造方法を示
す工程図。FIG. 1 is a process drawing showing a method for manufacturing a metal end plate according to an embodiment of the present invention.
【図２】図１のＡ−Ａ線断面図。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図１のＢ−Ｂ線断面図。FIG. 3 is a sectional view taken along line BB of FIG.
【図４】深絞り加工された鏡板の斜視図。FIG. 4 is a perspective view of a deep-drawn end plate.
【図５】その鏡板をタンク本体の端部に突合わせる前の
状態を示す、鏡板、バッフルプレート及びタンク本体の
分解斜視図。FIG. 5 is an exploded perspective view of the end plate, the baffle plate, and the tank body before showing the end plate of the end plate of the tank body.
【図６】鏡板をタンク本体にバッフルプレートとともに
溶接している状態を示す図７のＣ−Ｃ線断面図。6 is a cross-sectional view taken along line CC of FIG. 7 showing a state where the end plate is welded to the tank body together with the baffle plate.
【図７】鏡板をタンク本体にバッフルプレートともに溶
接する順序を示す燃料タンクの側面図。FIG. 7 is a side view of the fuel tank showing the order of welding the end plate and the baffle plate to the tank body.
【図８】鏡板の側壁コーナ部の折畳まれた余肉部を互い
に溶接している状態を示す図６のＤ−Ｄ線断面図。FIG. 8 is a cross-sectional view taken along line DD of FIG. 6, showing a state where the folded extra thickness portions of the side wall corner portions of the end plate are welded to each other.
【図９】その燃料タンクを搭載した車両の側面図。FIG. 9 is a side view of a vehicle equipped with the fuel tank.
１１ 燃料タンク １３ タンク本体 １４ 鏡板 １４ｃ 余肉部 １４ｄ 側壁コーナ部 １６ バッフルプレート ２１ 平板素材 ２１ｂ 材料余り部 ２３ ダイス ２３ａ 角形凹部 ２３ｂ 案内突起 ２４ ポンチ ２４ａ 逃げ溝 ３１ 第１辺 ３２ 第２辺 ３３ 第３辺 ３４ 第４辺 11 Fuel tank 13 Tank body 14 End plate 14c surplus part 14d Side wall corner 16 baffle plate 21 flat plate material 21b Material remainder part 23 dice 23a Square recess 23b Guide protrusion 24 punch 24a escape groove 31 First side 32 Second side 33 Third side 34 Fourth Side
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２１Ｄ 53/88 Ｂ２１Ｄ 53/88 Ｄ Ｂ６５Ｄ 6/00 Ｂ６５Ｄ 6/00 Ｆ０２Ｍ 37/00 ３０１ Ｆ０２Ｍ 37/00 ３０１Ｊ // Ｂ６０Ｋ 15/03 Ｂ６０Ｋ 15/02 Ａ (58)調査した分野(Int.Cl.7，ＤＢ名) B21D 22/26 B21D 24/00 B21D 51/18 B21D 51/26 B21D 53/88 B65D 6/00 F02M 37/00 301 B60K 15/03 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI B21D 53/88 B21D 53/88 D B65D 6/00 B65D 6/00 F02M 37/00 301 F02M 37/00 301J // B60K 15 / 03 B60K 15/02 A (58) Fields surveyed (Int.Cl. 7 , DB name) B21D 22/26 B21D 24/00 B21D 51/18 B21D 51/26 B21D 53/88 B65D 6/00 F02M 37/00 301 B60K 15/03
Claims (4)
打抜く工程と、 角形凹部(23a)を有しかつ前記角形凹部(23a)の口元コー
ナ部に案内突起(23b)が形成されたダイス(23)の上面に
前記角形凹部(23a)を覆うように前記平板素材(21)を載
せる工程と、 前記角形凹部(23a)に遊挿可能な角柱状に形成されかつ
前記案内突起(23b)に対向する角柱コーナ部に沿って逃
げ溝(24a)が形成されたポンチ(24)を前記角形凹部(23a)
に押込んで前記平板素材(21)を深絞り加工することによ
り角形箱状の鏡板(14)を成形する工程とを含む金属製鏡
板の製造方法であって、 前記平板素材(21)の深絞り加工時に前記平板素材(21)の
四隅の材料余り部(21b)が前記案内突起(23a)により案内
され、折畳まれながら前記逃げ溝(24a)内に進入して余
肉部(14c)を形成することを特徴とする金属製鏡板の製
造方法。1. A step of punching a flat plate material (21) of a predetermined shape from a metal plate, and a step of forming a rectangular projection (23a) and forming a guide projection (23b) at the corner of the square recess (23a). A step of placing the flat plate material (21) on the upper surface of the die (23) formed so as to cover the rectangular recess (23a), and a guide protrusion formed in a prismatic shape that can be loosely inserted into the rectangular recess (23a). The punch (24) having the escape groove (24a) formed along the prismatic corner facing the (23b) is formed into the rectangular recess (23a).
A method of manufacturing a metal end plate including a step of forming a rectangular box-shaped end plate (14) by deep-drawing the flat plate material (21) by pushing into During processing, the material surplus portions (21b) at the four corners of the flat plate material (21) are guided by the guide protrusions (23a), and while being folded, enter the escape groove (24a) to remove the excess thickness portion (14c). A method for manufacturing a metal end plate, which is characterized by forming the end plate.
(13)の端部に金属製のバッフルプレート(16)をその一部
が突出するように挿入する工程と、 請求項１記載の鏡板(14)を前記バッフルプレート(16)の
突出部に嵌入して前記鏡板(14)を前記タンク本体(13)の
端部に突合せる工程と、 前記タンク本体(13)と前記鏡板(14)との突合せ部を前記
バッフルプレート(16)とともに溶接する工程と、 前記タンク本体(13)に溶接された前記鏡板(14)の側壁コ
ーナ部(14d)の折畳まれた余肉部(14c)を互いに溶接する
工程とを含む金属製鏡板を用いた燃料タンクの製造方
法。2. A tank body made of metal and formed in a rectangular tube shape.
A step of inserting a metal baffle plate (16) into an end portion of the (13) so that a part thereof projects, and an end plate (14) according to claim 1 is fitted into the projecting portion of the baffle plate (16). And then abutting the end plate of the tank plate (14) with the end of the tank body (13), and welding the abutting part of the tank body (13) and the end plate (14) together with the baffle plate (16). And a step of welding the folded margin portion (14c) of the side wall corner portion (14d) of the end plate (14) welded to the tank body (13) to each other, the fuel using the metal end plate Tank manufacturing method.
フルプレート(16)をその一部が突出するように挿入する
工程と、 角筒状に形成された金属製のタンク本体(13)の端部に前
記バッフルプレート(16)の突出部を挿入して前記鏡板(1
4)を前記タンク本体(13)の端部に突合せる工程と、 前記タンク本体(13)と前記鏡板(14)との突合せ部を前記
バッフルプレート(16)とともに溶接する工程と、 前記タンク本体(13)に溶接された前記鏡板(14)の側壁コ
ーナ部(14d)の折畳まれた余肉部(14c)を互いに溶接する
工程とを含む金属製鏡板を用いた燃料タンクの製造方
法。3. A step of inserting a metal baffle plate (16) into the end plate (14) according to claim 1 so that a part of the baffle plate (16) protrudes, and a metal tank main body formed in a rectangular tube shape ( Insert the protrusion of the baffle plate (16) into the end of (13) to insert the end plate (1
4) butting the end portion of the tank body (13), welding the butting portion of the tank body (13) and the end plate (14) together with the baffle plate (16), the tank body A method of manufacturing a fuel tank using a metal end plate, which comprises a step of welding the folded margin portions (14c) of the side wall corners (14d) of the end plate (14) welded to (13) to each other.
をバッフルプレート(16)とともに溶接するときに、先ず
第１辺(31)を溶接し、次いで前記第１辺(31)に対向する
第３辺(33)を溶接し、次に第２辺(32)又は第４辺(34)を
溶接し、更に前記第２辺(32)又は前記第４辺(34)に対向
する第４辺(34)又は第２辺(32)を溶接する請求項２又は
３記載の金属製鏡板を用いた燃料タンクの製造方法。4. When welding the abutting portion of the tank body (13) and the end plate (14) together with the baffle plate (16), first the first side (31) is welded, and then the first side (31). Weld the third side (33) facing the second side, then weld the second side (32) or the fourth side (34), and further face the second side (32) or the fourth side (34). The method for producing a fuel tank using a metal end plate according to claim 2 or 3, wherein the fourth side (34) or the second side (32) is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01673497A JP3454656B2 (en) | 1997-01-30 | 1997-01-30 | Method of manufacturing metal end plate and method of manufacturing fuel tank using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01673497A JP3454656B2 (en) | 1997-01-30 | 1997-01-30 | Method of manufacturing metal end plate and method of manufacturing fuel tank using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10216849A JPH10216849A (en) | 1998-08-18 |
| JP3454656B2 true JP3454656B2 (en) | 2003-10-06 |
Family
ID=11924507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01673497A Expired - Fee Related JP3454656B2 (en) | 1997-01-30 | 1997-01-30 | Method of manufacturing metal end plate and method of manufacturing fuel tank using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3454656B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4801891B2 (en) * | 2004-08-26 | 2011-10-26 | 宝栄工業株式会社 | Fuel tank |
| US7658300B2 (en) | 2006-05-09 | 2010-02-09 | Columbiana Boiler Company, Llc | Container for transporting and storing hazardous substances and method for making the container |
| JP5568877B2 (en) * | 2008-03-31 | 2014-08-13 | Ｊｆｅスチール株式会社 | Branch member forming method and branch member |
| JP5862371B2 (en) * | 2012-02-29 | 2016-02-16 | 日本電産サンキョーシーエムアイ株式会社 | Arc spot welding method |
| CN103639260A (en) * | 2013-11-13 | 2014-03-19 | 吴静 | One-time-shaping automatic box-making machine |
| JP2016168619A (en) * | 2015-03-13 | 2016-09-23 | 株式会社神戸製鋼所 | Bottomed cylindrical component and manufacturing method for the same |
| CN107552639B (en) * | 2017-09-30 | 2023-07-14 | 浙江大学华南工业技术研究院 | Basin courage forming die of basin |
| CN111167954B (en) * | 2020-01-08 | 2020-12-22 | 惠州市惠阳区昇阳五金制品有限公司 | Hardware tank making mold |
-
1997
- 1997-01-30 JP JP01673497A patent/JP3454656B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10216849A (en) | 1998-08-18 |
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