JP2003263990A - Grating body for battery electrode plate and manufacturing device thereof - Google Patents
Grating body for battery electrode plate and manufacturing device thereofInfo
- Publication number
- JP2003263990A JP2003263990A JP2002065639A JP2002065639A JP2003263990A JP 2003263990 A JP2003263990 A JP 2003263990A JP 2002065639 A JP2002065639 A JP 2002065639A JP 2002065639 A JP2002065639 A JP 2002065639A JP 2003263990 A JP2003263990 A JP 2003263990A
- Authority
- JP
- Japan
- Prior art keywords
- valley
- peripheral side
- disc
- disk
- mountain
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、ロータリ式エキス
パンダによって製造される電池極板用格子体及びその製
造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery electrode plate grid body manufactured by a rotary expander and a manufacturing apparatus therefor.
【0002】[0002]
【従来の技術】鉛蓄電池の極板は、鉛又は鉛合金からな
る格子体のマス目に活物質を充填したものである。この
格子体は、鉛又は鉛合金の鋳造等によって直接格子状に
作製する他に、鉛又は鉛合金からなる鉛シートにエキス
パンダによってマス目を形成して作製する場合がある。
そして、このエキスパンダには、ダイスカッタの上下動
作によって鉛シートに両端部から順に各マス目を形成す
るレシプロ方式と、円板カッタの回転によって鉛シート
に千鳥状のスリットを形成し、この鉛シートを両側から
引き広げることによりスリットをマス目に展開するロー
タリ方式とがある。2. Description of the Related Art An electrode plate of a lead-acid battery is a grid of grids made of lead or a lead alloy filled with an active material. This grid body may be directly manufactured in a grid shape by casting lead or a lead alloy, or may be manufactured by forming a square on a lead sheet made of lead or a lead alloy by an expander.
In this expander, the reciprocating method in which each square is formed on the lead sheet sequentially from both ends by the vertical movement of the die cutter, and the staggered slits are formed on the lead sheet by the rotation of the disc cutter. There is a rotary method in which the slits are spread out on both sides by expanding from both sides.
【0003】上記ロータリ方式のエキスパンダ(ロータ
リ式エキスパンダ)で用いる円板カッタ1は、図8に示
すように、金属製の円板の周縁部に、周方向の長さが比
較的長い山部1aと比較的短い谷部1bとをこの周方向
に沿って交互に全周にわたって多数形成したものであ
る。各山部1aには、円板カッタ1の軸心を中心とする
所定半径の基準円周面からさらに外周方向に向けて山形
に突出した周側面が形成されている。なお、図8の楕円
形内の拡大図では、この基準円周面を平面に展開して示
している。各谷部1bは、この所定半径の基準円周面か
らなる周側面が形成されている。また、これらの各谷部
1bには、山部1aを介して隣り合う両側の谷部1bで
表裏が逆になる円板面の周縁部に、当該谷部1bの周側
面に開口する凹溝1cが形成されている。即ち、円板カ
ッタ1の表裏双方の円板面には、それぞれ1つおきの谷
部1bに凹溝1cが形成されていて、一方の円板面に凹
溝1cが形成された谷部1bと他方の円板面に凹溝1c
が形成された谷部1bとが円周上に交互に並んで配置さ
れるようになっている。これらの凹溝1cは、谷部1b
の周長とほぼ同じ幅を有すると共に、円板カッタ1の板
厚のほぼ半分の深さを有する円板カッタ1の円板面に半
径方向に沿って形成された溝であり、一端はこの谷部1
bの周側面に開口すると共に、他端は円板カッタ1の軸
心側に向けてある程度の長さにわたって形成されてい
る。As shown in FIG. 8, a disc cutter 1 used in the above rotary type expander (rotary type expander) has a mountain having a relatively long circumferential length at the peripheral portion of a metal disc. A large number of portions 1a and relatively short valleys 1b are formed alternately along the circumferential direction over the entire circumference. Each mountain portion 1a is formed with a peripheral side surface projecting in a mountain shape further toward the outer peripheral direction from a reference peripheral surface having a predetermined radius centered on the axis of the disc cutter 1. In the enlarged view of the elliptical shape of FIG. 8, the reference circumferential surface is shown as a flat surface. Each valley portion 1b has a peripheral side surface formed of a reference circumferential surface having a predetermined radius. In addition, in each of these valleys 1b, a concave groove that is open to the peripheral side surface of the valley 1b is formed in the peripheral edge of the disk surface where the front and back are reversed in the valleys 1b on both sides that are adjacent via the peak 1a. 1c is formed. That is, on both the front and back disc surfaces of the disc cutter 1, concave grooves 1c are formed in every other valley portion 1b, and one trough portion 1b in which the concave grooves 1c are formed. And concave groove 1c on the other disc surface
The troughs 1b formed with are formed alternately on the circumference. These concave grooves 1c are formed in the valley portion 1b.
Is a groove formed along the radial direction on the disk surface of the disk cutter 1 having a width substantially equal to the circumference of the disk cutter 1 and having a depth of about half the plate thickness of the disk cutter 1, one end of which is Tanibe 1
The opening is formed on the peripheral side surface of b and the other end is formed over a certain length toward the axial center side of the disc cutter 1.
【0004】上記円板カッタ1は、多数枚をそれぞれこ
の円板カッタ1の厚さとほぼ同じ間隔ずつ離して共通の
回転軸上に並べて固定することにより円板カッタロール
2を形成する。そして、図9に示すように、こような円
板カッタロール2を2本上下に配置して、これらの間に
鉛シート3を通すことにより千鳥状のスリット3aを多
数形成する。この際、図10に示すように、下方の円板
カッタロール2の各円板カッタ1の間に、上方の円板カ
ッタロール2の各円板カッタ1がほとんど隙間なく挟ま
り込むように、これらの円板カッタ1を上下で軸方向に
半ピッチだけずらして配置している。また、上下の円板
カッタロール2,2は、図10(a)(c)に示すよう
に、これら上下の円板カッタ1の谷部1b同士がわずか
に重なり合うような軸間距離となるような高さ位置に配
置されている。さらに、上下の円板カッタロール2,2
の各円板カッタ1は、図10(a)に示すように、下方
の円板カッタ1における一方の側(図では右側)の円板
面に凹溝1cが形成された谷部1bが上端に達したとき
に、上方の円板カッタ1における他方の側(図では左
側)の円板面に凹溝1cが形成された谷部1bが下端に
達するように回転方向の位相も調整される。従って、図
10(b)に示すように、下方の円板カッタ1の山部1
aが上端に達したときには、上方の円板カッタ1も山部
1aが下端に達するようになり、図10(c)に示すよ
うに、下方の円板カッタ1における他方の側(図では左
側)の円板面に凹溝1cが形成された谷部1bが上端に
達したときに、上方の円板カッタ1における一方の側
(図では右側)の円板面に凹溝1cが形成された谷部1
bが下端に達するようになる。The disc cutter 1 forms a disc cutter roll 2 by arranging and fixing a plurality of disc cutters 1 on a common rotary shaft at intervals of substantially the same thickness as the disc cutter 1. Then, as shown in FIG. 9, two such disc cutter rolls 2 are arranged one above the other and a lead sheet 3 is passed between them to form a large number of staggered slits 3a. At this time, as shown in FIG. 10, the disc cutters 1 of the upper disc cutter roll 2 are sandwiched between the disc discs 1 of the lower disc cutter roll 2 with almost no gap therebetween. The disc cutters 1 are arranged vertically offset by a half pitch in the axial direction. Further, the upper and lower disc cutter rolls 2 and 2 have an axial distance such that the valley portions 1b of the upper and lower disc cutters 1 are slightly overlapped with each other, as shown in FIGS. It is located at a different height. In addition, the upper and lower disc cutter rolls 2, 2
As shown in Fig. 10 (a), each disc cutter 1 of Fig. 10 has a trough 1b having a groove 1c formed on the disc surface on one side (right side in the figure) of the lower disc cutter 1 at the upper end. When it reaches, the phase in the rotational direction is also adjusted so that the valley portion 1b in which the concave groove 1c is formed on the disc surface on the other side (left side in the drawing) of the upper disc cutter 1 reaches the lower end. . Therefore, as shown in FIG. 10B, the mountain portion 1 of the lower disk cutter 1 is
When “a” reaches the upper end, the mountain portion 1a of the upper disc cutter 1 also reaches the lower end, and as shown in FIG. 10C, the other side of the lower disc cutter 1 (left side in the figure). ) When the valley portion 1b having the concave groove 1c formed on the disk surface reaches the upper end, the concave groove 1c is formed on the disk surface on one side (right side in the figure) of the upper disk cutter 1. Tanibe 1
b reaches the lower end.
【0005】上記構成の円板カッタロール2の間に鉛シ
ート3を通すと、図10(b)及び図11に示すよう
に、上下の各円板カッタ1の山部1aが交互に重なり合
うことにより鉛シート3が切断されてスリット3aが形
成される。ただし、図10では、スリット3aの番号は
付記せず、鉛シート3の幅方向に隣り合うスリット3
a,3aの間に形成される鉛シート3の細長いシート片
からなる桟3bの番号のみを示している。このように形
成された各桟3bは、上下の円板カッタ1の山部1aに
よって隣接するもの同士が上下に押されて、鉛シート3
の幅方向に交互にシート面から上下方向に山形に突出す
る。また、上下の円板カッタ1の谷部1bでは、図10
(a)(c)に示すように、凹溝1c同士が背中合わせ
になった隣接部分では、これら上下の谷部1bの周側面
がわずかに重なり合うことにより鉛シート3が切断され
てスリット3aが連続的に形成されるが、凹溝1c同士
が向かい合わせになった隣接部分では、これらの凹溝1
cによって上下の谷部1bの周側面が重なり合わずに鉛
シート3が切断を免れるので、スリット3aが鉛シート
3の進行方向に途切れて結節部3cが形成されることに
なる。即ち、図11の左下に示す2箇所の結節部3c,
3cは、凹溝1c同士が背中合わせになった上下の谷部
1bによってこれらの結節部3c,3cの間が切断され
るが、図11の右上に示す結節部3cは、凹溝1c同士
が向かい合わせになった上下の谷部1bによりスリット
3aが途絶えて、上下に山形に突出した桟3b,3bを
それぞれ繋げた状態となる。従って、鉛シート3に形成
されるスリット3aは、山部1aに押された山形の桟3
bの2山分のものが、結節部3cで途中途切れながら進
行方向に連続的に形成される。また、鉛シート3上で幅
方向に隣接するスリット3aは、この結節部3cとなる
位置が半ピッチずれて形成される。そして、これによ
り、図9の円内に平面図で示すようにスリット3aは千
鳥状となる。When the lead sheet 3 is passed between the disc cutter rolls 2 having the above-described construction, the mountain portions 1a of the upper and lower disc cutters 1 are alternately overlapped as shown in FIGS. 10 (b) and 11. Thus, the lead sheet 3 is cut to form the slit 3a. However, in FIG. 10, the numbers of the slits 3a are not added, and the slits 3a adjacent to each other in the width direction of the lead sheet 3 are illustrated.
Only the number of the crosspiece 3b formed of the elongated sheet piece of the lead sheet 3 formed between a and 3a is shown. As for the crosspieces 3b formed in this way, adjacent ones are pushed up and down by the mountain portions 1a of the upper and lower disc cutters 1 and the lead sheet 3
Alternately in the width direction of the to project in a mountain shape in the vertical direction from the seat surface. In addition, in the valley portion 1b of the upper and lower disc cutters 1, as shown in FIG.
As shown in (a) and (c), the lead sheet 3 is cut and the slit 3a is continuous at the adjacent portions where the concave grooves 1c are back to back because the peripheral side surfaces of the upper and lower valleys 1b slightly overlap each other. However, in the adjacent portion where the concave grooves 1c face each other, these concave grooves 1c are formed.
Since the peripheral side surfaces of the upper and lower valley portions 1b do not overlap with each other due to c, the lead sheet 3 is prevented from being cut, so that the slit 3a is interrupted in the traveling direction of the lead sheet 3 to form the knot portion 3c. That is, the two knots 3c shown in the lower left of FIG.
3c is cut between the knots 3c and 3c by the upper and lower valleys 1b in which the grooves 1c are back to back, but the knot 3c shown in the upper right of FIG. The slits 3a are interrupted by the combined upper and lower valleys 1b, and the cross-shaped projecting bars 3b and 3b are connected to each other. Therefore, the slit 3a formed in the lead sheet 3 is formed by the mountain-shaped bar 3 pushed by the mountain portion 1a.
Two peaks b are continuously formed in the traveling direction while being interrupted at the knot portion 3c. Further, the slits 3a adjacent to each other in the width direction on the lead sheet 3 are formed so that the positions serving as the knots 3c are displaced by a half pitch. As a result, the slits 3a have a zigzag shape as shown in a plan view in the circle of FIG.
【0006】上記スリット形成工程によって多数のスリ
ット3aが形成された鉛シート3は、ロータリ式エキス
パンダの後工程である展開工程において幅方向の両側に
引き広げられることにより、これらのスリット3aがマ
ス目状に展開されて、格子状の格子体が形成される。即
ち、図12に示すように、鉛シート3の幅方向にスリッ
ト3aを介して隣接していた結節部3cがこの幅方向に
引き離されるので、各結節部3cに繋がる4本ずつの山
形の桟3bが斜め方向に引き伸ばされて直線状となり、
4箇所の結節部3cとこれらを繋ぐ斜め方向の4本の桟
3bによって平行四辺形状のマス目が形成されることに
なる。The lead sheet 3 having a large number of slits 3a formed in the slit forming step is expanded to both sides in the width direction in a developing step which is a post-step of the rotary expander, so that these slits 3a are mass-produced. It is expanded in the shape of an eye to form a lattice-shaped lattice body. That is, as shown in FIG. 12, since the knot portions 3c that are adjacent to each other in the width direction of the lead sheet 3 via the slits 3a are separated in this width direction, four chevron-shaped bars connected to each knot portion 3c are formed. 3b is stretched diagonally to form a straight line,
A parallelogram-shaped square is formed by the four knot portions 3c and the four diagonally connecting bars 3b that connect them.
【0007】[0007]
【発明が解決しようとする課題】ところが、上記桟3b
は、円板カッタ1の山部1aに押されて頂部3dが最も
急な曲率で屈曲した山形に塑性変形しているので、展開
工程で斜め方向に引き伸ばされて直線状となった場合に
も、この山形の頂部3dは屈曲した塑性変形が残り完全
な直線状に伸ばすことができない。このため、桟3bが
展開工程で引き伸ばされると、このときの引っ張り応力
が頂部3dの屈曲した塑性変形部分の両側に集中し易か
った。However, the crosspiece 3b is not provided.
Is pressed by the ridges 1a of the disk cutter 1 and the top 3d is plastically deformed into a mountain shape bent with the steepest curvature. However, the mountain-shaped top portion 3d cannot be stretched in a completely straight line due to the remaining plastic deformation. Therefore, when the crosspiece 3b is stretched in the expansion step, the tensile stress at this time is easily concentrated on both sides of the bent plastically deformed portion of the top portion 3d.
【0008】しかも、これらの桟3bは、展開工程で斜
め方向に引き伸ばされて直線状になるだけでなく、実際
には、図12の矢印D,Eに示すように、両端部で互い
に逆方向のねじりが加えられて展開されることになる。
即ち、図10(a)(c)に示すように、各結節部3c
は、上下の円板カッタ1の谷部1bに鉛シート3の幅方
向の両側をそれぞれ上下逆方向に押されるので、この幅
方向の一方と他方ではシート厚分程度の高低差が生じ、
桟3bが引き出される位置にも高低差がある。また、図
12に示すように、1本の桟3bの片側の端に繋がる結
節部3cでは、幅方向の一方が高く他方が低くなるのに
対して、同じ桟3bの別の側の端に繋がる結節部3cで
は、幅方向の一方が低く他方が高くなる。従って、この
ような鉛シート3を幅方向に引き広げると、各結節部3
cは、高低差のある桟3bによって幅方向の両側に引っ
張られることにより、図12の右上と左下に示す結節部
3c,3cは、矢印Fに示す方向にねじりが加えられる
のに対して、図12の左上と右下に示す結節部3c,3
cは、逆方向の矢印Gに示す方向にねじりが加えられる
ことになる。そして、図12の右上と左上の結節部3
c,3cの間の桟3bであれば、両端部を矢印Dの方向
と矢印Eの方向に逆方向にねじられながら展開されるこ
とになる。このため、各桟3bは、両端部を逆方向にね
じられながら引き伸ばされるので、このねじり応力も頂
部3dの屈曲した塑性変形部分の両側に集中し易くな
る。Moreover, these crosspieces 3b are not only stretched in a slanting direction in the expansion step to be straight, but in fact, as shown by arrows D and E in FIG. It will be expanded with the twist of.
That is, as shown in FIGS. 10A and 10C, each knot 3c
Is pressed by the troughs 1b of the upper and lower disc cutters 1 in the opposite vertical directions on both sides in the width direction of the lead sheet 3, so that a height difference of about one sheet thickness occurs in one of the width directions and the other,
There is also a height difference in the position where the crosspiece 3b is pulled out. Further, as shown in FIG. 12, in the knot portion 3c connected to one end of one bar 3b, one side in the width direction is high and the other is low, while the same side end of the bar 3b is connected to the other side. In the connected knot portion 3c, one is lower in the width direction and the other is higher in the width direction. Therefore, when such a lead sheet 3 is expanded in the width direction, each knot 3
c is pulled to both sides in the width direction by the crosspiece 3b having a height difference, so that the knots 3c and 3c shown in the upper right and lower left of FIG. 12 are twisted in the direction shown by the arrow F, while Nodes 3c, 3 shown in the upper left and lower right of FIG.
C is to be twisted in the direction indicated by the arrow G in the opposite direction. Then, the nodule 3 on the upper right and the upper left of FIG.
In the case of the crosspiece 3b between c and 3c, both ends are unfolded while being twisted in opposite directions in the directions of arrow D and E. For this reason, since each of the bars 3b is stretched while being twisted in opposite directions at both ends, this torsional stress is also easily concentrated on both sides of the bent plastically deformed portion of the top portion 3d.
【0009】従って、従来のロータリ式エキスパンダで
製造された格子体は、各桟3bにおける頂部3dの屈曲
が残った塑性変形部分の両側に、展開工程での引っ張り
応力とねじり応力が集中してくびれが生じることがあ
り、この部分にクラックが発生することが多くなるとい
う問題があった。特に、鉛シート3のシート厚が1.0
mmを超えるような厚いものの場合や円板カッタ1の山
部1aの突出量が大きいものを用いる場合には、桟3b
の頂部3dの近傍にクラックが発生することが多くな
る。そして、このような格子体を極板に用いて電池を製
造すると、クラック部分で局部腐食が生じたり、最悪の
場合には桟3bが断線し、これらが原因となって電池寿
命が早く尽きるようになる。Therefore, in the lattice body manufactured by the conventional rotary expander, the tensile stress and the torsion stress in the expanding process are concentrated on both sides of the plastically deformed portion of the top 3d of each bar 3b where the bending remains. There is a problem that necking may occur and cracks often occur at this portion. Especially, the thickness of the lead sheet 3 is 1.0
In the case of a thick one that exceeds mm, or when a protruding amount of the mountain portion 1a of the disc cutter 1 is large, the crosspiece 3b is used.
The cracks often occur in the vicinity of the top portion 3d. When a battery is manufactured by using such a grid body as an electrode plate, local corrosion may occur at the cracked portion, or in the worst case, the crosspiece 3b may be broken, which may cause the battery life to end quickly. become.
【0010】本発明は、かかる事情に対処するためにな
されたものであり、円板カッタの山部の周側面に傾斜面
を形成して桟を予めねじった状態で山形に形成すること
により、この桟にクラックが発生し難い電池極板用格子
体を提供すると共にその製造装置を提供することを目的
としている。The present invention has been made in order to cope with such a situation, and by forming an inclined surface on the peripheral side surface of the mountain portion of the disk cutter to form the bar in a pre-twisted state into a mountain shape, It is an object of the present invention to provide a grid plate for a battery electrode plate in which cracks are unlikely to occur in the crosspiece and a manufacturing apparatus thereof.
【0011】[0011]
【課題を解決するための手段】請求項1の発明は、円板
の周縁部に、この円板の軸心を中心とする所定半径の基
準円周面からさらに外周方向に向けて山形に突出した周
側面が形成された山部と、この基準円周面にほぼ沿った
面からなる周側面が形成された谷部とが、円周方向に交
互に全周にわたって形成されると共に、各谷部ごとに、
山部を介して隣り合う両側の谷部で表裏逆となる片方の
円板面の周縁部に、当該谷部の周側面に開口する凹溝が
形成された円板カッタを、間隔を開けて同軸上に複数枚
並べて円板カッタロールとし、この円板カッタロ−ルを
2本以上対向させて配置した間に金属シートを通すこと
により、この金属シートに千鳥状のスリットを多数形成
するロータリ式エキスパンダを用いた電池極板用格子体
の製造装置において、これらの円板カッタにおける各谷
部の両側に形成された山部の頂部から当該谷部に至る間
の周側面に、それぞれ当該谷部における凹溝を形成した
側の円板面に近いほど軸心側に近づく傾斜面が形成され
たことを特徴とする。According to a first aspect of the present invention, at the peripheral portion of a disc, a mountain-shaped projection is formed from a reference circumferential surface having a predetermined radius centered on the axis of the disc toward the outer peripheral direction. The ridges formed with the circumferential side surfaces and the valleys formed with the circumferential side surfaces that are formed along the reference circumferential surface are alternately formed in the circumferential direction over the entire circumference, and each valley is formed. In each section,
At the peripheral edge of one disc surface that is upside down in the valleys on both sides that are adjacent to each other via the ridges, place a disc cutter in which a groove is formed that opens to the peripheral side surface of the valley. A rotary type in which a plurality of staggered slits are formed in the metal sheet by passing a metal sheet between two or more disk cutter rolls arranged facing each other to form a disk cutter roll. In an apparatus for manufacturing a battery electrode plate grid using an expander, the valleys are respectively formed on the peripheral side surfaces from the tops of the peaks formed on both sides of each valley in these disk cutters to the valleys. It is characterized in that an inclined surface is formed which is closer to the axial center side as it is closer to the disc surface on the side where the groove is formed in the portion.
【0012】請求項1の発明によれば、円板カッタの山
部の周側面に傾斜面が形成されているので、この山部に
押されて金属シートにスリットが形成されるときに、隣
接するスリットとの間で構成される細長い桟が傾斜面に
沿って予めねじった状態で山形となる。しかも、この桟
は、凹溝側に傾斜したものとなるため、結節部が展開時
に桟に引っ張られてねじれる方向とは逆方向となるの
で、この展開時に桟の頂部の近傍にねじり応力が集中す
るのを軽減できるようになる。According to the invention of claim 1, since the inclined surface is formed on the peripheral side surface of the mountain portion of the disk cutter, when the metal sheet is pressed by the mountain portion to form the slit, the adjacent portions are adjacent to each other. The elongated crosspiece formed between the slit and the slit forms a mountain shape in a pre-twisted state along the inclined surface. Moreover, since this crosspiece is inclined toward the concave groove side, the knot is opposite to the direction in which it is pulled and twisted by the crosspiece during deployment, so torsional stress concentrates near the top of the crosspiece during this deployment. It will be possible to reduce.
【0013】なお、円板面に近いほど軸心側に近づく傾
斜面とは、当該傾斜面の接面が当該円板面側ほど円板カ
ッタの軸心側に傾斜していることを意味し、当該傾斜面
の一部に接面が軸心に平行となる部分があっても良い
が、接面が外周側に傾斜する部分があってはならないこ
とを意味する。An inclined surface that is closer to the axial center as it is closer to the disc surface means that the contact surface of the inclined surface is inclined toward the axial center of the disc cutter as the disc surface is closer. A part of the inclined surface may have a portion where the contact surface is parallel to the axial center, but it means that the contact surface must not have a portion where the contact surface is inclined toward the outer peripheral side.
【0014】上記傾斜面は、谷部から山部の頂部に至る
円板カッタの半径方向の高さの3分の1以上だけ当該谷
部より高い山部の周側面の位置から当該谷部にかけて形
成されたものであることが好ましい。従来は桟の頂部の
近傍にねじり応力が集中していたので、円板カッタの山
部の傾斜面はできるだけ頂部付近にまで形成されている
ことが好ましい。従って、この傾斜面を山部の3分の1
以上の高さから谷部に至るまで形成することにより、桟
に予め形成するねじりが確実に効果を奏するようにする
ことができる。The inclined surface extends from the position of the peripheral side surface of the mountain portion higher than the valley portion to the valley portion by one third or more of the radial height of the disc cutter from the valley portion to the top of the mountain portion. It is preferably formed. Conventionally, since the torsional stress is concentrated near the top of the crosspiece, it is preferable that the inclined surface of the mountain portion of the disk cutter is formed as close to the top as possible. Therefore, make this inclined surface one third of the mountain
By forming from the above height to the valley portion, it is possible to ensure that the twist formed in advance on the crosspiece has an effect.
【0015】また、上記傾斜面の傾斜角度は、基準円周
面に対して40°以下であることが好ましい。このよう
に、傾斜面の傾斜角度を40°以下とすれば、この傾斜
面と円板面との間のエッジの角度を60°以上にするこ
とができるので、金属シートが確実に切断できるように
なる。The inclination angle of the inclined surface is preferably 40 ° or less with respect to the reference circumferential surface. Thus, if the inclination angle of the inclined surface is 40 ° or less, the angle of the edge between the inclined surface and the disc surface can be 60 ° or more, so that the metal sheet can be surely cut. become.
【0016】請求項2の電池極板用格子体は、請求項1
に記載の製造装置で製造されたことを特徴とする。A battery electrode plate grid according to a second aspect is the first aspect.
It is manufactured by the manufacturing apparatus described in 1.
【0017】請求項2の発明によれば、展開時に桟の頂
部へのねじり応力の集中が軽減されるので、クラックや
断線が発生し難い電池極板用格子体となる。According to the second aspect of the present invention, the concentration of torsional stress on the top of the crosspiece is reduced at the time of deployment, so that a grid for a battery electrode plate in which cracks and disconnections hardly occur.
【0018】[0018]
【発明の実施の形態】以下、本発明の実施形態について
図面を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【0019】図1〜図7は本発明の一実施形態を示すも
のであって、図1は円板カッタの全体とこの円板カッタ
の周縁部を拡大して示す正面図、図2は円板カッタの谷
部を挟んで向かい合う山部の周側面に形成された傾斜面
を示す部分拡大斜視図、図3は上下の円板カッタロール
の各円板カッタの山部に形成された傾斜面に押されて鉛
シートの桟にねじりが加えられる様子を示すロータリ式
エキスパンダのスリット形成工程の部分拡大縦断面側面
図、図4はスリット形成工程によって形成された結節部
とこれに繋がる4本の桟を示す鉛シートの部分拡大斜視
図、図5は円板カッタの谷部を挟んで向かい合う山部の
周側面に形成された傾斜面の他の第1の構成例を示す部
分拡大斜視図、図6は円板カッタの谷部を挟んで向かい
合う山部の周側面に形成された傾斜面の他の第2の構成
例を示す部分拡大斜視図、図7は円板カッタの谷部を挟
んで向かい合う山部の周側面に形成された傾斜面の他の
第3の構成例を示す部分拡大斜視図である。なお、図8
〜図12に示した従来例と同様の機能を有する構成部材
には同じ番号を付記する。1 to 7 show an embodiment of the present invention. FIG. 1 is an enlarged front view showing the entire disc cutter and the peripheral portion of the disc cutter, and FIG. 2 is a circle. FIG. 3 is a partially enlarged perspective view showing an inclined surface formed on the peripheral side surfaces of a mountain portion facing each other across the valley portion of the plate cutter. FIG. 3 is an inclined surface formed on the mountain portion of each disc cutter of the upper and lower disc cutter rolls. Fig. 4 is a partial enlarged vertical cross-sectional side view of the slit forming process of the rotary expander showing how the lead sheet bars are twisted by being pressed by, and Fig. 4 shows the nodules formed by the slit forming process and the four connecting parts. 5 is a partially enlarged perspective view of the lead sheet showing the crosspiece of FIG. 5, and FIG. 5 is a partially enlarged perspective view showing another first configuration example of the inclined surfaces formed on the peripheral side surfaces of the mountain portions facing each other across the valley portion of the disc cutter. Fig. 6 shows the peripheral side faces of the ridges that face each other across the valley of the disc cutter. FIG. 7 is a partially enlarged perspective view showing another second configuration example of the formed inclined surface, and FIG. 7 shows another third inclined surface formed on the peripheral side surfaces of the mountain portions facing each other across the valley portion of the disc cutter. It is a partially expanded perspective view which shows a structural example. Note that FIG.
The same numbers are added to the components having the same functions as those of the conventional example shown in FIG.
【0020】本実施形態は、従来例と同様に、鉛蓄電池
の極板に用いる格子体を製造するためのロータリ式エキ
スパンダについて説明する。このロータリ式エキスパン
ダは、図9に示したように、上下の円板カッタロール
2,2の間に鉛シート3を通すことにより、この鉛シー
ト3に千鳥状の多数のスリット3aを形成する。そし
て、これらのスリット3aにおける鉛シート3の幅方向
の間が桟3bとなり、進行方向の間が結節部3cとな
る。In this embodiment, similarly to the conventional example, a rotary expander for manufacturing a grid body used for an electrode plate of a lead storage battery will be described. As shown in FIG. 9, this rotary expander forms a large number of staggered slits 3a in the lead sheet 3 by passing the lead sheet 3 between the upper and lower disc cutter rolls 2 and 2. . Then, the space between the lead sheets 3 in the slits 3a becomes the crosspiece 3b, and the space between the advancing directions becomes the knot portion 3c.
【0021】上記円板カッタロール2,2は、従来例と
同様に、それぞれ多数枚ずつの円板カッタ1を隙間をあ
けて並べて配置したものである。ただし、各円板カッタ
1の構成は、従来とは異なる。各円板カッタ1は、図1
に示すように、金属製の円板の周縁部に、周方向の長さ
が比較的長い山部1aと比較的短い谷部1bとをこの周
方向に沿って交互に全周にわたって多数形成したもので
ある。各谷部1bには、従来例と同様に、円板カッタ1
の軸心を中心とする所定半径の基準円周面からなる周側
面が形成されていて、山部1aを介して隣り合う両側の
谷部1bで表裏が逆になる円板面の周縁部に、当該谷部
1bの周側面に開口する凹溝1cが形成されている。な
お、この図1でも、楕円形内の拡大図では、基準円周面
を平面に展開して示している。The disk cutter rolls 2 and 2 each have a large number of disk cutters 1 arranged side by side with a gap therebetween, as in the conventional example. However, the configuration of each disc cutter 1 is different from the conventional one. Each disc cutter 1 is shown in FIG.
As shown in FIG. 4, a large number of peaks 1a having relatively long circumferential lengths and valleys 1b having relatively short circumferential lengths are alternately formed along the circumferential direction on the peripheral edge of the metal disk along the circumferential direction. It is a thing. As in the conventional example, the disc cutter 1 is provided in each valley 1b.
A peripheral side surface is formed of a reference circular surface having a predetermined radius centered on the axis center of, and is formed on the peripheral edge portion of the disc surface where the front and back sides are reversed in the valley portions 1b on both sides adjacent to each other with the mountain portion 1a. A recessed groove 1c is formed on the peripheral side surface of the valley 1b. In FIG. 1 as well, in the enlarged view of the ellipse, the reference circumferential surface is shown as a flat surface.
【0022】上記円板カッタ1の各山部1aには、基準
円周面からさらに外周方向に向けて山形に突出した周側
面が形成されている。この山部1aの周側面は、図1の
楕円形内の拡大図に示すように、回転方向の前方から後
方に向けて(矢印の逆方向)、谷部1bの周側面である
基準円周面から外周側に向けて斜めにほぼ直線状に立ち
上がり、山形の頂部1dで湾曲して、内周側に向けて斜
めにほぼ直線状に立ち下がることにより再び基準円周面
に至るような山形に形成されている。また、この山部1
aの周側面の立ち上がり部と立ち下がり部は、山形の頂
部1dを中心に回転方向の前後に均等ではなく、実際に
はこの頂部1dが回転方向の前方側に寄っていて、この
回転方向の前方側の立ち上がり部の方が後方側の立ち下
がり部よりも急峻な周側面となっている。なお、このよ
うに各山部1aの頂部1dが回転方向の前方側に寄った
構成は従来も同じである。Each mountain portion 1a of the disc cutter 1 is formed with a peripheral side surface projecting in a mountain shape from the reference peripheral surface toward the outer peripheral direction. As shown in the enlarged view in the ellipse of FIG. 1, the peripheral side surface of the mountain portion 1a is a reference circumference that is the peripheral side surface of the valley portion 1b from the front to the rear of the rotation direction (the direction opposite to the arrow). From the surface to the outer peripheral side, it rises in a substantially straight line, bends at the mountain-shaped top 1d, and descends in a substantially straight line toward the inner peripheral side to reach the reference circumferential surface again. Is formed in. Also, this Yamabe 1
The rising and falling parts of the peripheral side surface of a are not even in the front and rear in the rotation direction around the mountain-shaped top 1d, and actually, the top 1d is closer to the front side in the rotation direction, and The rising portion on the front side has a steeper peripheral side surface than the falling portion on the rear side. The configuration in which the top portion 1d of each mountain portion 1a is closer to the front side in the rotation direction is the same as in the past.
【0023】上記各山部1aの周側面の立ち上がり部と
立ち下がり部には、それぞれ傾斜面1e,1eが形成さ
れている。傾斜面1eは、図2に示すように、各山部1
aの周側面の立ち上がり部と立ち下がり部の途中からそ
れぞれ谷部1bに至るまでの間に形成された面であり、
凹溝1cの場合と同様に、各谷部1bごとに交互に逆の
方向に傾斜した面として形成されている。即ち、各谷部
1bごとに、この谷部1bの両側に隣接する回転方向前
方側の山部1aの周側面の立ち下がり部と、回転方向後
方側の山部1aの周側面の立ち上がり部(当該谷部1b
を挟んで向かい合う立ち下がり部と立ち上がり部)に、
この谷部1bに開口する凹溝1cを形成した側の円板面
(図2では右下方を向く面)に近いほど円板カッタ1の
回転軸の中心に近づくように傾斜している。従って、1
箇所の山部1aの周側面においては、その立ち上がり部
に形成された傾斜面1eと立ち下がり部に形成された傾
斜面1eとで傾斜する方向が逆になる。Inclined surfaces 1e and 1e are formed on the rising and falling portions of the peripheral side surface of each of the ridges 1a, respectively. As shown in FIG. 2, the inclined surface 1e is formed on each mountain portion 1
a surface formed between the rising and falling portions of the peripheral side surface of a to the valley portion 1b,
Similar to the case of the concave groove 1c, each valley portion 1b is formed as a surface alternately inclined in the opposite direction. That is, for each trough 1b, the trailing edge of the peripheral side surface of the crest 1a on the front side in the rotational direction adjacent to both sides of the trough 1b and the rising edge of the peripheral side surface of the crest 1a on the rear side in the rotational direction ( The valley 1b
(The falling part and the rising part that face each other with the
The closer to the disc surface (the surface facing the lower right in FIG. 2) on the side where the concave groove 1c opening to the valley portion 1b is formed, the more it is inclined to approach the center of the rotation axis of the disc cutter 1. Therefore, 1
On the peripheral side surface of the mountain portion 1a at the location, the inclined surface 1e formed at the rising portion and the inclined surface 1e formed at the falling portion are inclined in opposite directions.
【0024】本実施形態の場合、上記傾斜面1eは、図
2に示す点A,B,Cを頂点とする三角形で囲まれた平
面によって構成されている。この際、点Aは、図2の右
上側に示した山部1aの周側面の立ち下がり部における
図2の右下方を向く円板面側の縁の中間部、即ち谷部1
bの周側面となる基準円周面から山部1aの頂部1dま
での距離(高さ)をHとすると、この基準円周面の所定
半径よりもH/2だけ大きい半径の円周面と山部1aの
周側面との接線が当該円板面と交差する点となる。ま
た、点Bは、当該山部1aの周側面の立ち下がり部にお
ける図2の左上方を向く円板面側の縁が当該谷部1bの
周側面と接する点となる。さらに、点Cは、図2の右下
方を向く円板面の周縁上であって、当該山部1aの本来
の周側面の立ち下がり部と、当該谷部1bの本来の周側
面とが接する点Oよりも基準円周面に沿って当該山部1
a側に寄った点となる。そして、この点Cが山部1a側
に寄ることにより、この山部1aの周側面の立ち下がり
部に対して傾斜面1eが傾斜することになる。In the case of this embodiment, the inclined surface 1e is constituted by a plane surrounded by a triangle having points A, B and C as vertices shown in FIG. At this time, the point A is the middle part of the edge of the disc surface facing the lower right of FIG. 2 in the falling part of the peripheral side surface of the mountain portion 1a shown on the upper right side of FIG.
Assuming that the distance (height) from the reference circumferential surface that is the circumferential side surface of b to the top 1d of the mountain portion 1a is H, a circumferential surface having a radius larger than the predetermined radius of the reference circumferential surface by H / 2 is obtained. The tangent to the peripheral side surface of the mountain portion 1a is the point where the disc surface intersects. Further, the point B is a point where the edge on the disc surface side facing the upper left of FIG. 2 in the falling portion of the peripheral side surface of the mountain portion 1a contacts the peripheral side surface of the valley portion 1b. Further, the point C is on the peripheral edge of the disk surface facing the lower right in FIG. 2, and the falling portion of the original peripheral side surface of the peak 1a and the original peripheral side surface of the valley 1b are in contact with each other. The mountain portion 1 along the reference circumferential surface rather than the point O
The point is closer to the side a. Then, when this point C approaches the mountain portion 1a side, the inclined surface 1e is inclined with respect to the falling portion of the peripheral side surface of the mountain portion 1a.
【0025】上記では、図2に示した谷部1bの右上側
に形成された傾斜面1eについて説明したが、右下側に
形成された傾斜面1eも同様の三角形で囲まれた平面に
よって構成され、それぞれの山部1aの周側面に対して
同じ方向に傾斜した面となる。また、谷部1bとは山部
1aを介して隣り合う図2では図示しない別の谷部1b
では、逆方向に傾斜した傾斜面1e,1eが形成される
ことになる。Although the inclined surface 1e formed on the upper right side of the valley portion 1b shown in FIG. 2 has been described above, the inclined surface 1e formed on the lower right side is also composed of a plane surrounded by a similar triangle. Thus, the surfaces are inclined in the same direction with respect to the peripheral side surface of each mountain portion 1a. Further, another valley portion 1b which is not shown in FIG. 2 and which is adjacent to the valley portion 1b via the mountain portion 1a is provided.
Then, the inclined surfaces 1e, 1e inclined in the opposite direction are formed.
【0026】上記傾斜面1eを形成した円板カッタ1を
用いた円板カッタロール2,2の間に鉛シート3と通す
と、各円板カッタ1の山部1aによってスリット3aを
形成される際に、図3に示すように、この山部1aの傾
斜面1eによって上下に押されることにより、桟3bが
ねじられながら山形に変形されることになり、断面形状
も矩形ではなく平行四辺形状となる。つまり、各桟3b
は、山部1aにおける傾斜面1eに押された部分、即ち
図4に示すように、結節部3cと繋がる端部(図4にド
ットを付して示した部分)が最初からねじれて形成され
る。しかも、図4の矢印Rで示したこの桟3bの端部の
ねじれ方向は、当該端部が繋がる結節部3cが展開の際
にねじれる方向、即ち図12でも説明した矢印F方向と
は逆になる。そして、この矢印Rと矢印Fのねじれ方向
が逆になる関係は、図4に示した上側の2本の桟3bに
おいても同様である。また、展開時に図12に示した矢
印G方向にねじれる結節部3cでは、ここに繋がる各桟
3bの端部がこの矢印Gとは逆方向にねじれて形成され
る。When the lead sheet 3 is passed between the disc cutter rolls 2 and 2 using the disc cutter 1 having the inclined surface 1e, the slits 3a are formed by the peak portions 1a of each disc cutter 1. At this time, as shown in FIG. 3, by being pushed up and down by the inclined surface 1e of the mountain portion 1a, the crosspiece 3b is twisted and deformed into a mountain shape, and the cross-sectional shape is not a rectangular shape but a parallelogram shape. Becomes That is, each bar 3b
Is formed by twisting a portion of the mountain portion 1a pressed by the inclined surface 1e, that is, an end portion (a portion shown by a dot in FIG. 4) connected to the knot portion 3c from the beginning. It Moreover, the twisting direction of the end portion of the crosspiece 3b shown by the arrow R in FIG. 4 is opposite to the direction in which the knot portion 3c connected to the end portion is twisted at the time of deployment, that is, the arrow F direction described in FIG. Become. The relationship in which the twist directions of the arrow R and the arrow F are opposite to each other is the same in the two upper crosspieces 3b shown in FIG. Further, at the knotted portion 3c which is twisted in the direction of arrow G shown in FIG. 12 at the time of unfolding, the ends of the bars 3b connected thereto are formed by being twisted in the direction opposite to the arrow G.
【0027】上記構成により、本実施形態のロータリ式
エキスパンダは、鉛シート3にスリット3aを形成する
際に、円板カッタ1の各山部1aの周側面に形成した傾
斜面1eにより、各桟3bの両端部を予めねじった状態
で山形に変形させる。しかも、これら各桟3bの両端部
のねじりは、鉛シート3の展開時に結節部3cがねじれ
る方向とは逆となる。従って、実際に展開工程で鉛シー
ト3を展開したときに結節部3cがねじれても、この結
節部3cに繋がる桟3bの端部は予め加えられたねじれ
が戻る方向のねじり応力を受けることになる。このた
め、各桟3bは、両端部に加わるねじり応力の影響を軽
減し、このねじり応力が桟3bの頂部3dの近傍に集中
するのを防ぐことができるようになる。With the above-described structure, the rotary expander of the present embodiment is configured such that when the slit 3a is formed in the lead sheet 3, the inclined surface 1e formed on the peripheral side surface of each mountain portion 1a of the disc cutter 1 causes Both ends of the crosspiece 3b are pre-twisted and deformed into a chevron shape. Moreover, the twisting of both ends of each of the crosspieces 3b is opposite to the twisting direction of the knot portion 3c when the lead sheet 3 is unfolded. Therefore, even if the knot portion 3c is twisted when the lead sheet 3 is actually unfolded in the unfolding step, the end of the crosspiece 3b connected to this knot portion 3c is subjected to a torsional stress in the direction in which the twist applied in advance returns. Become. Therefore, each bar 3b can reduce the influence of the torsional stress applied to both ends thereof and prevent the torsional stress from being concentrated near the top 3d of the bar 3b.
【0028】なお、上記実施形態では、図2に示したよ
うに、傾斜面1eの点Cを点Oよりも基準円周面に沿っ
て山部1a側に寄せた場合を示したが、図5に示すよう
に、この点Cを凹溝1cの縁、即ち円板カッタ1の半径
方向に沿って軸心側に寄せることもできる。図2の場合
には、谷部1bの周側面が三角形BOCの領域分だけ広
がることになるが、図5のようにすれば、傾斜面1eが
自然に谷部1bの周側面や凹溝1cと繋がるようにな
り、桟3bの端部に加わるねじりを滑らかにすることが
できる。ただし、この図5の場合には、谷部1bの周側
面を、凹溝1cが形成されていない円板面側の縁では基
準円周面に一致するが凹溝1cが形成された円板面側に
よるほど半径が小さくなるようなテーパ面とすることに
より、傾斜面1eの辺BCに沿わせるようにしている。In the above embodiment, as shown in FIG. 2, the point C of the inclined surface 1e is closer to the mountain portion 1a side than the point O along the reference circumferential surface. As shown in FIG. 5, this point C can also be brought closer to the axial center side along the edge of the concave groove 1c, that is, along the radial direction of the disc cutter 1. In the case of FIG. 2, the peripheral side surface of the valley portion 1b is widened by the area of the triangle BOC. However, if it is configured as shown in FIG. 5, the inclined surface 1e naturally becomes the peripheral side surface of the valley portion 1b and the concave groove 1c. And the twist applied to the end of the crosspiece 3b can be smoothed. However, in the case of FIG. 5, the peripheral side surface of the valley portion 1b is a disc on which the concave groove 1c is formed although the peripheral edge of the disc surface where the concave groove 1c is not formed coincides with the reference circumferential surface. By forming the taper surface such that the radius becomes smaller toward the surface side, the taper surface is arranged along the side BC of the inclined surface 1e.
【0029】また、上記図5の傾斜面1eの点Bを、図
6に示すように、基準円周面に沿って凹溝1cの開口部
の縁まで移動させることもできる。この場合、傾斜面1
eは、最大幅の部分でも山部1aの周側面の幅の半分程
度しかなくなるが、桟3bの幅の全体ではなく半分程度
が予めねじれているだけでも、ねじり応力を軽減するこ
とはできる。Further, as shown in FIG. 6, the point B of the inclined surface 1e of FIG. 5 can be moved to the edge of the opening of the groove 1c along the reference circumferential surface. In this case, the inclined surface 1
Although the maximum width e is only about half of the width of the peripheral side surface of the mountain portion 1a, the torsion stress can be reduced by only twisting about half the width of the crosspiece 3b in advance.
【0030】さらに、鉛シート3に結節部3cを形成す
るための凹溝1cは、対向する円板カッタ1の凹溝1c
との間の間隙によって鉛シート3にスリット3aを形成
しないようにするためのものなので、必ずしも矩形の溝
である必要はない。従って、例えば図7に示すように、
谷部1bの周側面を面取り状にした凹溝1cとし、両側
の傾斜面1eの端辺を繋げるような面によって構成する
こともできる。Further, the concave groove 1c for forming the knot portion 3c on the lead sheet 3 is the concave groove 1c of the disc cutter 1 facing each other.
Since it is intended to prevent the slit 3a from being formed in the lead sheet 3 due to the gap between the lead sheet 3 and the lead sheet 3, it need not be a rectangular groove. Therefore, for example, as shown in FIG.
It is also possible to form a chamfered concave groove 1c on the peripheral side surface of the valley portion 1b and to form a surface that connects the end sides of the inclined surfaces 1e on both sides.
【0031】ただし、円板カッタ1の山部1aの周側面
は、互い違いに対向するもの同士が鉛シート3を挟んで
押し合うことにより、この鉛シート3にスリット3aを
形成するためのものであるため、この山部1aの周側面
と円板カッタ1の両円板面との間のエッジの角度は双方
ともできるだけ鋭角に近いことが望ましく、通常は共に
90°の角度としている。しかし、山部1aの周側面に
傾斜面1eが形成されると、この傾斜面1eと円板面と
の間のエッジの角度は鈍角にならざるを得ず、この角度
が大きくなりすぎると、鉛シート3を確実に切断できず
スリット3aが形成されなくなる。このため、傾斜面1
eの傾斜角度はあまり大きくしすぎないようにする必要
があり、基準円周面に対する傾斜角度を40°以下とす
ることにより、円板面との間のエッジの角度が60°以
上となるようにして、鉛シート3に確実にスリット3a
が形成されるようにすることが好ましい。However, the peripheral side surfaces of the ridges 1a of the disc cutter 1 are for forming slits 3a in the lead sheet 3 by alternately pushing the lead sheet 3 with the lead sheet 3 sandwiched therebetween. Therefore, it is desirable that the angles of the edges between the peripheral side surface of the mountain portion 1a and both disc surfaces of the disc cutter 1 are both as close to an acute angle as possible, and usually both are 90 °. However, when the inclined surface 1e is formed on the peripheral side surface of the mountain portion 1a, the angle of the edge between the inclined surface 1e and the disc surface must be an obtuse angle, and if this angle becomes too large, The lead sheet 3 cannot be cut reliably and the slit 3a is not formed. Therefore, the inclined surface 1
It is necessary to make the inclination angle of e not too large. By setting the inclination angle with respect to the reference circumferential surface to 40 ° or less, the angle of the edge with the disc surface becomes 60 ° or more. And make sure that the lead sheet 3 has the slit 3a.
Are preferably formed.
【0032】また、桟3bの頂部3dの近傍にねじり応
力が集中するのを避けるためには、できるだけ山部1a
の頂部1dに近い位置から傾斜面1eを形成することが
好ましい。このため、傾斜面1eは、最も頂部1dに近
い点Aを少なくともこの頂部1dの高さHの3分の1以
上の高さの位置に設定することが望ましく、上記実施形
態でも、この点Aを頂部1dの高さHの半分程度の位置
にしている。そして、もちろん傾斜面1eは、もっと頂
部1dに近い位置から形成することもできる。ただし、
傾斜面1eが山部1aの頂部1dの極めて近傍まで形成
されると、鉛シート3に最初にスリット3aの切り込み
を入れる際にこの傾斜面1eが当接することになるの
で、円板面との間のエッジの角度が鈍角となり、切り込
みの開始が円滑に行われなくなるおそれが生じる。Further, in order to avoid the concentration of the torsional stress near the top portion 3d of the crosspiece 3b, the mountain portion 1a is as much as possible.
It is preferable to form the inclined surface 1e from a position close to the top portion 1d. For this reason, it is desirable to set the point A closest to the apex 1d on the inclined surface 1e at a position of at least one third of the height H of the apex 1d. Is located at about half the height H of the top 1d. And, of course, the inclined surface 1e can be formed from a position closer to the top portion 1d. However,
When the inclined surface 1e is formed very close to the top portion 1d of the mountain portion 1a, the inclined surface 1e comes into contact with the lead sheet 3 when the slit 3a is first cut. The angle between the edges becomes an obtuse angle, and there is a risk that the start of cutting will not be performed smoothly.
【0033】また、上記実施形態では、傾斜面1eを平
面で形成する場合を示したが、隣接する谷部1bの凹溝
1cを形成した側の円板面に近いほど円板カッタ1の軸
心側に近づくような面であれば必ずしも平面である必要
はなく、曲面や複数の平面によって形成されていてもよ
い。さらに、この傾斜面1eは、3つの頂点に囲まれた
三角形である必要もない。Further, in the above embodiment, the case where the inclined surface 1e is formed as a flat surface is shown, but the axis of the disc cutter 1 becomes closer to the disc surface on the side where the concave groove 1c of the adjacent valley portion 1b is formed. The surface does not necessarily have to be a flat surface as long as it is close to the inner side, and may be a curved surface or a plurality of flat surfaces. Furthermore, this inclined surface 1e does not need to be a triangle surrounded by three vertices.
【0034】また、上記実施形態では、上下2本の円板
カッタロール2,2の間に鉛シート3を通すロータリ式
エキスパンダについて示したが、これらの円板カッタロ
ール2の配置は任意であり、3本以上の円板カッタロー
ル2を対向させて配置した間に鉛シート3を通すような
ロータリ式エキスパンダにも同様に実施可能である。In the above embodiment, the rotary expander in which the lead sheet 3 is passed between the upper and lower disc cutter rolls 2 and 2 has been described, but the disc cutter rolls 2 may be arranged arbitrarily. Therefore, the present invention can be similarly applied to a rotary expander in which the lead sheet 3 is passed through while the three or more disk cutter rolls 2 are arranged so as to face each other.
【0035】また、上記実施形態では、鉛シート3を加
工して鉛蓄電池の極板に用いる格子体を製造する場合に
ついて説明したが、極板の集電基材に同様の格子体を用
いるものであれば、鉛蓄電池に限らず任意の電池にも実
施可能であり、この電池の種類に応じた適宜な材質の金
属シートを用いて格子体を製造することができる。In the above embodiment, the case where the lead sheet 3 is processed to manufacture the grid body used for the electrode plate of the lead storage battery has been described. However, the same grid body is used for the current collecting base material of the electrode plate. As long as it is a lead storage battery, it can be applied to any battery, and the grid can be manufactured using a metal sheet of an appropriate material according to the type of the battery.
【0036】[0036]
【実施例】上記実施形態で説明した円板カッタ1と従来
例で示した円板カッタ1を用いてそれぞれ鉛シート3か
ら実施例の格子体と従来例の格子体を作製し、展開後の
桟3bの頂部3d近傍を詳細に観察することによりクラ
ックの発生率を調べた。また、これら実施例と従来例の
格子体に活物質を充填し、熟成及び乾燥を行って正極板
として自動車用の鉛蓄電池(JIS形式55D23形)
に組み込み、所定比重、所定量の希硫酸を注入し化成を
行うことにより電池を完成して、JIS過充電試験を行
うことにより、その寿命性能を試験すると共に、この試
験後の桟3bの断線率を調べた。なお、この鉛蓄電池
は、いずれの場合も、負極板として従来からのものを用
い、これらの極板間に微孔性のポリエチレンを主体とし
たセパレータを介在させた。EXAMPLE Using the disc cutter 1 described in the above embodiment and the disc cutter 1 shown in the conventional example, the grid body of the example and the grid body of the conventional example were produced from the lead sheet 3, respectively, and after development. The incidence of cracks was examined by observing the vicinity of the top 3d of the crosspiece 3b in detail. Further, a lead storage battery for automobiles (JIS type 55D23 type) is used as a positive electrode plate by filling an active material in the grids of these examples and the conventional example, aging and drying.
The battery is completed by injecting into it a prescribed specific gravity and a prescribed amount of dilute sulfuric acid to carry out chemical conversion, and a JIS overcharge test is conducted to test its life performance and to disconnect the crosspiece 3b after this test. I checked the rate. In each of the lead-acid batteries, a conventional negative electrode plate was used in each case, and a microporous polyethylene-based separator was interposed between these electrode plates.
【0037】ここで、実施例の円板カッタ1の山部1a
の傾斜面1eは、図2に示すような三角形状の平面とし
た。また、谷部1bの周側面となる基準円周面から傾斜
面1eの最も頂部1dに近い傾斜開始位置(点A)まで
の高さを、この頂部1dの高さHに対して20%のもの
と50%(H/2)のものと70%のものを作製した。
この傾斜面1eの基準円周面に対する傾斜角度は、原則
として30°としたが、傾斜面1eの傾斜開始位置を7
0%としたものについては、10°〜50°の範囲で複
数のものを作製した。Here, the mountain portion 1a of the disc cutter 1 of the embodiment.
The inclined surface 1e is a triangular flat surface as shown in FIG. Further, the height from the reference circumferential surface, which is the peripheral side surface of the valley 1b, to the inclination start position (point A) closest to the top 1d of the inclined surface 1e is 20% of the height H of the top 1d. 50% (H / 2) and 70% were prepared.
The inclination angle of the inclined surface 1e with respect to the reference circumferential surface is 30 ° in principle, but the inclination start position of the inclined surface 1e is 7 degrees.
About 0%, a plurality of materials were produced in the range of 10 ° to 50 °.
【0038】上記実施例と従来例の比較結果を表1に示
す。ここで、表1の最後に示した傾斜面1eの傾斜角度
を50°としたものについては、格子体が作製できなか
ったために、検査や試験を行うことができなかった。こ
れは、傾斜面1eと円板カッタ1の円板面との間のエッ
ジの角度が鈍角になりすぎて鉛シート3を切断できず、
スリット3aが形成されなかったためである。また、こ
れにより傾斜面1eの傾斜角度は、40°以下とするこ
とが好ましいことが分かった。Table 1 shows the results of comparison between the above-mentioned example and the conventional example. Here, with respect to the inclined surface 1e having the inclination angle of 50 ° shown at the end of Table 1, the lattice body could not be manufactured, so that the inspection and the test could not be performed. This is because the angle of the edge between the inclined surface 1e and the disk surface of the disk cutter 1 is too obtuse to cut the lead sheet 3,
This is because the slit 3a was not formed. It was also found from this that the inclination angle of the inclined surface 1e is preferably 40 ° or less.
【表1】 [Table 1]
【0039】上記比較の結果、頂部3d近傍のクラック
発生率は、いずれの実施例も従来例の40%より低く、
クラックの発生を抑制する効果があることが確認でき
た。また、寿命性能と試験後の桟3bの破断率も、この
クラックの発生率の低下に伴って全ての実施例が従来例
より長寿命であり破断率の低いものとなっていた。ただ
し、傾斜面1eの傾斜開始位置を20%としたものにつ
いては、従来例との差が比較的小さかったので、この傾
斜開始位置は、少なくとも山部1aの頂部1dの高さH
の3分の1(約33%)以上の位置とすることが好まし
いことも分かった。As a result of the above comparison, the crack occurrence rate in the vicinity of the top portion 3d is lower than 40% of the conventional example in all Examples,
It was confirmed that it has an effect of suppressing the generation of cracks. As for the life performance and the breakage rate of the crosspiece 3b after the test, all the examples had a longer life and a lower breakage rate than the conventional example due to the decrease in the crack generation rate. However, when the inclination start position of the inclined surface 1e is set to 20%, the difference from the conventional example is relatively small, and therefore the inclination start position is at least the height H of the top portion 1d of the mountain portion 1a.
It has also been found that it is preferable to set the position to one third or more (about 33%).
【0040】[0040]
【発明の効果】以上の説明から明らかなように、本発明
の電池極板用格子体及びその製造装置によれば、円板カ
ッタの山部の周側面に形成された傾斜面により、金属シ
ートの桟がねじれた状態で山形に押されるので、この金
属シートの展開時に発生する逆方向のねじり応力が桟の
頂部の近傍に集中するのを軽減することができるように
なる。従って、格子体の桟の腐食や破断を防止すること
ができるので、電池不良の発生を抑制すると共に電池寿
命を長くすることができるようになる。As is apparent from the above description, according to the battery electrode plate grid and the apparatus for manufacturing the same of the present invention, the metal sheet is formed by the inclined surface formed on the peripheral side surface of the mountain portion of the disk cutter. Since the crosspiece is pushed into a mountain shape in a twisted state, it is possible to reduce the concentration of the reverse torsional stress generated at the time of developing the metal sheet near the top of the crosspiece. Therefore, it is possible to prevent corrosion and breakage of the crosspieces of the grid body, so that it is possible to suppress the occurrence of battery defects and extend the battery life.
【図1】本発明の一実施形態を示すものであって、円板
カッタの全体とこの円板カッタの周縁部を拡大して示す
正面図である。FIG. 1 shows an embodiment of the present invention and is an enlarged front view showing an entire disc cutter and a peripheral portion of the disc cutter.
【図2】本発明の一実施形態を示すものであって、円板
カッタの谷部を挟んで向かい合う山部の周側面に形成さ
れた傾斜面を示す部分拡大斜視図である。FIG. 2 shows an embodiment of the present invention, and is a partially enlarged perspective view showing inclined surfaces formed on the peripheral side surfaces of the mountain portions facing each other across the valley portion of the disc cutter.
【図3】本発明の一実施形態を示すものであって、上下
の円板カッタロールの各円板カッタの山部に形成された
傾斜面に押されて鉛シートの桟にねじりが加えられる様
子を示すロータリ式エキスパンダのスリット形成工程の
部分拡大縦断面側面図である。FIG. 3 is a view showing an embodiment of the present invention, in which a lead sheet is twisted by being pushed by an inclined surface formed in a mountain portion of each disc cutter of upper and lower disc cutter rolls. It is a partial expanded longitudinal section side view of a slit formation process of a rotary expander which shows a mode.
【図4】本発明の一実施形態を示すものであって、スリ
ット形成工程によって形成された結節部とこれに繋がる
4本の桟を示す鉛シートの部分拡大斜視図である。FIG. 4 is a partial enlarged perspective view of a lead sheet showing a knotted portion formed by a slit forming step and four bars connected to the knotted portion according to an embodiment of the present invention.
【図5】本発明の一実施形態を示すものであって、円板
カッタの谷部を挟んで向かい合う山部の周側面に形成さ
れた傾斜面の他の第1の構成例を示す部分拡大斜視図で
ある。FIG. 5 shows an embodiment of the present invention, and is a partially enlarged view showing another first configuration example of the inclined surfaces formed on the peripheral side surfaces of the mountain portions facing each other across the valley portion of the disc cutter. It is a perspective view.
【図6】本発明の一実施形態を示すものであって、円板
カッタの谷部を挟んで向かい合う山部の周側面に形成さ
れた傾斜面の他の第2の構成例を示す部分拡大斜視図で
ある。FIG. 6 is a view showing an embodiment of the present invention, and is a partially enlarged view showing another second configuration example of the inclined surfaces formed on the peripheral side surfaces of the mountain portions facing each other with the valley portion of the disc cutter interposed therebetween. It is a perspective view.
【図7】本発明の一実施形態を示すものであって、円板
カッタの谷部を挟んで向かい合う山部の周側面に形成さ
れた傾斜面の他の第3の構成例を示す部分拡大斜視図で
ある。FIG. 7 shows an embodiment of the present invention, and is a partially enlarged view showing another third configuration example of the inclined surfaces formed on the peripheral side surfaces of the mountain portions facing each other with the valley portion of the disc cutter interposed therebetween. It is a perspective view.
【図8】従来例を示すものであって、円板カッタの全体
とこの円板カッタの周縁部を拡大して示す正面図であ
る。FIG. 8 is a front view showing a conventional example and enlarging an entire disc cutter and a peripheral portion of the disc cutter.
【図9】従来例を示すものであって、上下の円板カッタ
ロールの各円板カッタによって鉛シートにスリットが形
成される様子を示すロータリ式エキスパンダのスリット
形成工程の正面図である。FIG. 9 is a front view of a slit forming process of a rotary expander, showing a conventional example, showing how slits are formed in a lead sheet by the respective disc cutters of upper and lower disc cutter rolls.
【図10】従来例を示すものであって、上下の円板カッ
タロールの各円板カッタによって鉛シートにスリットが
形成される様子を示すロータリ式エキスパンダのスリッ
ト形成工程の部分拡大縦断面側面図である。FIG. 10 is a side view of a partially enlarged vertical cross section of a slit forming process of a rotary expander, showing a conventional example, in which a slit is formed in a lead sheet by each disc cutter of upper and lower disc cutter rolls. It is a figure.
【図11】従来例を示すものであって、スリット形成工
程によって形成された結節部とこれに繋がる桟を示す鉛
シートの部分拡大斜視図である。FIG. 11 is a partial enlarged perspective view of a lead sheet showing a knotted portion formed by a slit forming step and a crosspiece connected to the knotted portion, showing a conventional example.
【図12】従来例を示すものであって、スリット形成工
程によってスリットを形成された鉛シートを展開工程で
展開し格子体としたときの部分拡大斜視図である。FIG. 12 shows a conventional example, and is a partially enlarged perspective view when a lead sheet having slits formed in the slit forming step is expanded in a expanding step to form a grid.
1 円板カッタ 1a 山部 1b 谷部 1c 凹溝 1d 頂部 1e 傾斜面 2 円板カッタロール 3 鉛シート 3a スリット 3b 桟 3c 結節部 3d 頂部 1 disk cutter 1a Yamabe 1b Tanibe 1c groove 1d top 1e inclined surface 2 Disc cutter roll 3 Lead sheet 3a slit 3b crosspiece 3c nodule 3d top
Claims (2)
とする所定半径の基準円周面からさらに外周方向に向け
て山形に突出した周側面が形成された山部と、この基準
円周面にほぼ沿った面からなる周側面が形成された谷部
とが、円周方向に交互に全周にわたって形成されると共
に、各谷部ごとに、山部を介して隣り合う両側の谷部で
表裏逆となる片方の円板面の周縁部に、当該谷部の周側
面に開口する凹溝が形成された円板カッタを、間隔を開
けて同軸上に複数枚並べて円板カッタロールとし、この
円板カッタロ−ルを2本以上対向させて配置した間に金
属シートを通すことにより、この金属シートに千鳥状の
スリットを多数形成するロータリ式エキスパンダを用い
た電池極板用格子体の製造装置において、これらの円板
カッタにおける各谷部の両側に形成された山部の頂部か
ら当該谷部に至る間の周側面に、それぞれ当該谷部にお
ける凹溝を形成した側の円板面に近いほど軸心側に近づ
く傾斜面が形成されたことを特徴とする電池極板用格子
体の製造装置。1. A ridge portion having a peripheral side surface formed in a peripheral edge portion of the disk, the peripheral side surface projecting in a mountain shape further toward the outer peripheral direction from a reference circumferential surface having a predetermined radius centered on the axis of the disk, The valley portion, which has a circumferential side surface made up of a surface substantially along the reference circumferential surface, is formed alternately over the entire circumference in the circumferential direction, and each valley portion is adjacent to the valley portion through the peak portion. At the peripheral edge of one disk surface that is the opposite side in the valley on both sides, a plurality of disk cutters with concave grooves that open to the peripheral side surface of the valley are arranged coaxially at intervals. A plate electrode using a rotary expander, which is a plate cutter roll, and a plurality of staggered slits are formed in the metal sheet by passing a metal sheet between two or more disk cutter rolls arranged facing each other. In the plate grid manufacturing device, each valley in these disk cutters On the peripheral side surface between the top of the mountain portion formed on both sides of the portion and the valley portion, an inclined surface is formed that is closer to the axial center side as it is closer to the disc surface on the side where the groove is formed in the valley portion. An apparatus for manufacturing a grid for a battery electrode plate.
ことを特徴とする電池極板用格子体。2. A grid plate for a battery electrode plate, which is manufactured by the manufacturing apparatus according to claim 1.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002065639A JP2003263990A (en) | 2002-03-11 | 2002-03-11 | Grating body for battery electrode plate and manufacturing device thereof |
US10/177,972 US20030082455A1 (en) | 2001-06-22 | 2002-06-20 | Grid for a battery plate, method of producing the same, and battery using the same |
CA2391043A CA2391043C (en) | 2001-06-22 | 2002-06-20 | Grid for a battery plate, method of producing the same, and battery using the same |
DE2002127802 DE10227802A1 (en) | 2001-06-22 | 2002-06-21 | Grid for battery plate has wires with coupled nodes and are bent in predetermined oblique direction via drawn-out portion which is drawn out from node in longitudinal direction |
CN2010105208120A CN102005576B (en) | 2001-06-22 | 2002-06-21 | Grid for battery plate and method of producing the same |
CNB021418039A CN100388536C (en) | 2001-06-22 | 2002-06-21 | Grid-plate of battery plate and manufacture method and battery using the grid-plate |
CN2008100912308A CN101257114B (en) | 2001-06-22 | 2002-06-21 | Grid for a battery plate, method of producing the same, and battery using the same |
CN2010105207787A CN102005575B (en) | 2001-06-22 | 2002-06-21 | Method of producing grid for a battery plate and battery using the same |
US12/011,372 US7814628B2 (en) | 2001-06-22 | 2008-01-25 | Grid for a battery plate, method of producing the same, and battery using the same |
US12/893,812 US8256074B2 (en) | 2001-06-22 | 2010-09-29 | Grid for battery plate, method of producing the same, and battery using the same |
US12/893,836 US8256075B2 (en) | 2001-06-22 | 2010-09-29 | Grid for a battery plate, method of producing the same, and battery using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002065639A JP2003263990A (en) | 2002-03-11 | 2002-03-11 | Grating body for battery electrode plate and manufacturing device thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003263990A true JP2003263990A (en) | 2003-09-19 |
Family
ID=29197855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002065639A Pending JP2003263990A (en) | 2001-06-22 | 2002-03-11 | Grating body for battery electrode plate and manufacturing device thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2003263990A (en) |
-
2002
- 2002-03-11 JP JP2002065639A patent/JP2003263990A/en active Pending
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