JPS5828714B2 - Battery gasket manufacturing method - Google Patents
Battery gasket manufacturing methodInfo
- Publication number
- JPS5828714B2 JPS5828714B2 JP14001276A JP14001276A JPS5828714B2 JP S5828714 B2 JPS5828714 B2 JP S5828714B2 JP 14001276 A JP14001276 A JP 14001276A JP 14001276 A JP14001276 A JP 14001276A JP S5828714 B2 JPS5828714 B2 JP S5828714B2
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- gate
- recess
- mold
- battery
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- HTQOEHYNHFXMJJ-UHFFFAOYSA-N oxosilver zinc Chemical compound [Zn].[Ag]=O HTQOEHYNHFXMJJ-UHFFFAOYSA-N 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y02E60/12—
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Description
【発明の詳細な説明】
本発明は、電池のガスケット製造法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a battery gasket.
従来、ガスケットを合成樹脂で成形する際、その離型時
に金型の樹脂注入口（ゲート）と対応した成形体である
ガスケットの一部に樹脂突起（ゲートバリ）が突出し、
このゲートバリにより電池組立時の作業性低下、封口部
における耐漏液性低下、及びセパレータ等の破損による
電池性能の劣化を招くという問題があった。Conventionally, when gaskets are molded from synthetic resin, resin protrusions (gate burrs) protrude from a part of the molded gasket that corresponds to the resin injection port (gate) of the mold when the mold is released.
This gate burr causes problems such as reduced workability during battery assembly, reduced leakage resistance at the sealing portion, and deterioration of battery performance due to damage to separators and the like.
本発明はガスケット成形時に生じるゲートバリを、金型
のゲートを中央部に有した凸部に対応してガスケットの
一部に設けられる凹部の内底面に残存させることで前記
従来の問題点を解決したものである。The present invention solves the above-mentioned conventional problems by allowing the gate burr generated during gasket molding to remain on the inner bottom surface of a recess provided in a part of the gasket corresponding to the convex part having the gate in the center of the mold. It is something.
即ち、本発明はガスケットの周面又は底面の一部と対応
する金型の一部に凸部を設けるとともに、この凸部の中
央部にゲートを形成して、このゲートよシ溶融した樹脂
を注入して凸部に対応した部分に凹部を有し、かつその
凹部内底面にゲートバリを残存させてゲートバリのガス
ケット周面あるいは底面外への突出を解消することを特
徴としたものである。That is, in the present invention, a convex portion is provided in a part of the mold corresponding to a part of the circumferential surface or bottom surface of the gasket, and a gate is formed in the center of the convex portion, and the molten resin is poured through the gate. The gasket is characterized in that it has a recessed portion in a portion corresponding to the projected portion by injection, and that the gate burr remains on the inner bottom surface of the recessed portion to eliminate protrusion of the gate burr to the outside of the gasket peripheral surface or bottom surface.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
第１図は本発明の実施例によるガスケットを用いた酸化
銀−亜鉛電池の要部断面図であり、１は有底筒状の金属
ケースで陽極端子を兼ねており、内部に、酸化銀とりん
状黒鉛とを混合し加圧成形した陽極合剤２を配置してい
る。FIG. 1 is a sectional view of the main parts of a silver oxide-zinc battery using a gasket according to an embodiment of the present invention. 1 is a bottomed cylindrical metal case that also serves as an anode terminal, and inside it is a silver oxide-zinc battery. An anode mixture 2 mixed with phosphorescent graphite and press-molded is arranged.
３は合剤２上面に載置したレーザ加工等により多孔性化
された合成樹脂フィルム、例えばポリエチレン、４フツ
化エチレンなどようなるセパレータ、４は電解液含浸材
で、コツトン、ポリアミド等の不織布よシなる。3 is a separator made of a synthetic resin film made porous by laser processing etc. placed on the top surface of the mixture 2, such as polyethylene or tetrafluoroethylene; 4 is an electrolyte-impregnated material made of nonwoven fabric such as cotton or polyamide. Yes.
５は未化亜鉛粉末より陰極、６はケース１の開口部を閉
塞する封目板で陰極端子を兼ねている。Reference numeral 5 is a cathode made of unconsolidated zinc powder, and 6 is a sealing plate that closes the opening of the case 1 and also serves as a cathode terminal.
７は本発明の特徴とする断面路り字状に成形された合成
樹脂製ガスケットである。Reference numeral 7 denotes a synthetic resin gasket having a cross-section shaped like a curved line, which is a feature of the present invention.
このガスケット７は第２図に示す如く断面路り字状の外
周面あるいは外底面に部分的に凹部イを設け、との凹部
イの内底面にゲート口を設け、ここから溶融した合成樹
脂を注入して断面路り字状のガスケットを成形するもの
である。As shown in Fig. 2, this gasket 7 has a concave portion A partially formed on the outer peripheral surface or outer bottom surface of the cross-sectional shape, and a gate opening is provided on the inner bottom surface of the concave portion A, from which the molten synthetic resin is poured. It is injected to form a gasket with a curved cross section.
このガスケット成形に際してゲート口をいかに改良して
も金型からの離型時に高さ０．２ ｍｍ、外径０．３〜
０．５關の円錐状突起からなるゲートパリ八が生ずるこ
とは避けられない。No matter how much the gate opening is improved during gasket molding, the height will be 0.2 mm and the outer diameter will be 0.3 mm or more when released from the mold.
It is inevitable that a gate gap consisting of a 0.5 inch conical protrusion will occur.
従って、凹部イを深さ０．２５’７１！Ｉｌ１ロ径ＬＯ
ｍｍとすれば仮にパリ八を生じても、とのパリ八は凹部
内に収まって外方へ突出することはない。Therefore, the depth of the recess A is 0.25'71! Il1 diameter LO
If it is mm, even if a gap occurs, the gap will fit within the recess and will not protrude outward.
第４図はガスケット７を成形する具体的方法を示し、成
形金型は上型８と下型９とからなり、ガスケットの底面
の一部に対応した上型８には凹部イを形成するための凸
部イ′が設けられていて、その中央部（凹部イの内底面
中央部）にゲート口を設け、ここから溶融した合成樹脂
１０を金型間の成形空間に加圧状態で注入し、ガスケッ
トが成形される。FIG. 4 shows a specific method for molding the gasket 7. The molding die consists of an upper mold 8 and a lower mold 9, and a recess A is formed in the upper mold 8 corresponding to a part of the bottom surface of the gasket. A convex part A' is provided, and a gate opening is provided in the center of the convex part A' (the center part of the inner bottom surface of the concave part A'), through which the molten synthetic resin 10 is injected under pressure into the molding space between the molds. , a gasket is formed.
このように凹部イの内底面をゲート口としてガスケット
７を成形すれば、第３図に示すこれ１でのガスケットの
ように内外の周面あるいは外底面に直接ゲートを設けて
成形したもののように金型離型時にパリ八が外方へ突出
して平坦あるいは平滑を要する周面あるいは底面の特性
を損なうことはない。If the gasket 7 is molded using the inner bottom surface of the recess A as the gate opening, it will be molded with a gate directly provided on the inner and outer peripheral surfaces or the outer bottom surface, like the gasket 1 shown in FIG. When the mold is released, the particles do not protrude outward and impair the characteristics of the peripheral surface or bottom surface, which must be flat or smooth.
ゲートパリ八が周面又は底面より突出した場合、例えば
内周面にパリが生じた際には封口板との嵌合作業が損な
われる、外周面にパリが生じた場合にはケースとの嵌合
作業が損なわれる。If the gate edge protrudes from the circumference or bottom surface, for example, if a gap occurs on the inner circumferential surface, the fitting operation with the sealing plate will be impaired, and if a gap occurs on the outer circumferential surface, the fitting operation with the case will be impaired. karma is damaged.
外底面にパリが生じた場合は含液材あるいはセパレータ
周縁を破損させるという欠点があり、これを避けるため
、成形後ガスケットのパリを研摩あるいは切断等により
取り除いていたが、この作業に熟練を要するとともに手
数がかかりガスケットのコストを上昇させる問題があっ
た。If burrs form on the outer bottom surface, there is a disadvantage that the liquid-containing material or the periphery of the separator may be damaged. To avoid this, the burrs on the gasket were removed by polishing or cutting after molding, but this process requires skill. In addition, there was a problem in that it was time-consuming and increased the cost of the gasket.
しかし、前述の本発明の方法にＩよるガスケットではゲ
ートパリが凹部内に位置して周面あるいは底面外に突出
することはないため、成形後、後処理を要することなく
電池の組立に用いることができる。However, in the gasket made by the method I of the present invention described above, the gate pad is located within the recess and does not protrude outside the peripheral surface or bottom surface, so it can be used for battery assembly without requiring post-processing after molding. can.
尚、凹部の形成個所は周面又は底面の限られた一部であ
ってガスケット外面積全体に占める割合は極めて少ない
ものであるが、成形完了後の若干軟化状態にある金型か
らの離型時に加えられる弓張り力で偏肉した凹部を中心
として引裂かれないようにするためには、ガスケット周
面又は底面の肉厚をｔｌ、凹部イの深さをｔ２とした時
、ｔ１ｔ２＞０．３＋＋ｍを満足することが必要である
。Note that the recess is formed in a limited portion of the circumferential surface or the bottom surface and accounts for an extremely small proportion of the entire outer area of the gasket, but it is difficult to form the recess when the mold is released from the slightly softened mold after molding is completed. In order to prevent the gasket from being torn at the uneven thickness of the concave part due to the bow tension applied when the thickness is tl and the depth of the concave part A is t2, t1t2>0. It is necessary to satisfy 3++m.
すなわち凹部イの深さとその周囲の周面又は底面の肉厚
との間に寸法的に大きな差がない場合、離型時に極度に
偏肉した間部分より引裂かれることがあるが、凹部とそ
の周囲の肉厚差を０．３醋以上としておけば、これを解
決できる。In other words, if there is no large dimensional difference between the depth of the recess A and the wall thickness of the surrounding circumferential surface or bottom surface, the part between the recess and the wall with extremely uneven thickness may be torn during demolding. This problem can be solved by setting the difference in wall thickness at the periphery to 0.3 or more.
次に本発明によるガスケットの効果を確認するため、Ｊ
ＩＳ規格によるゞＧ１２”の電池を、第２図に示す本発
明によるガスケットの外周面の凹部内にゲートを設けた
ものＡ、同じく外底面の凹部内にゲートを設けたものＢ
と、従来のガスケット外周面にゲートを設けたものＣお
よび外底面にゲートを設けたものＤとにつき各々１００
個組立て、温度３５〜４５℃、相対湿度８０〜９０％の
雰囲気中で保存した際の漏液発生個数ならびに３力月保
存後における電池Ｂ、Ｄの５個につき６０８の負荷をつ
ないで規定電圧値まで放電させた際の放電持続時間を以
下に示す。Next, in order to confirm the effect of the gasket according to the present invention, J.
A G12" battery according to the IS standard is provided with a gate in the recess on the outer circumferential surface of the gasket according to the present invention as shown in FIG. 2, and B is also provided with a gate in the recess on the outer bottom surface.
and 100 each for conventional gaskets C with a gate provided on the outer peripheral surface and D with a gate provided on the outer bottom surface.
The number of leaking cells when assembled individually and stored in an atmosphere with a temperature of 35 to 45 degrees Celsius and a relative humidity of 80 to 90%, and the specified voltage when connecting a load of 608 for 5 batteries B and D after 3 months of storage. The discharge duration when discharged to this value is shown below.
なおガスケットはポリアミド製で外径１０．８０ｍｍ、
高さ２．５ ｖｔｍ、周面の肉厚０．７０間、底面肉厚
０．６０ｍｍ、凹部形状が口径１．０醋、深さ０．２５
ｍｍとした。The gasket is made of polyamide and has an outer diameter of 10.80 mm.
Height: 2.5 vtm, circumferential wall thickness: 0.70 mm, bottom wall thickness: 0.60 mm, concave shape: diameter 1.0 mm, depth: 0.25 mm
mm.
この結果からも本発明によるガスケットを用いた電池は
、耐漏液性に優れ、かつ放電性能も優れていることが明
らかである。It is clear from these results that the battery using the gasket of the present invention has excellent leakage resistance and discharge performance.
第１図は本発明の実施例におけるガスケットを用いた電
池の要部断面図、第２図は同ガスケットの拡大部分断面
図、第３図は従来のガスケットを示す拡大部分断面図、
第４図は本発明の実施例におけるガスケットの製造過程
における金型を示す図である。
７・・・・・・ガスケット、イ・・・・・・凹部、口・
・・・・・ゲート、ハ・・・・・・ケ−）パリ。FIG. 1 is a sectional view of a main part of a battery using a gasket according to an embodiment of the present invention, FIG. 2 is an enlarged partial sectional view of the same gasket, and FIG. 3 is an enlarged partial sectional view of a conventional gasket.
FIG. 4 is a diagram showing a mold in the process of manufacturing a gasket in an embodiment of the present invention. 7... Gasket, A... Recess, mouth.
...Gate, Ha...K) Paris.
Claims (1)
応する金型の一部に凸部を設けるとともに、この凸部の
中央部に樹脂注入口を形成し、この樹脂注入口より溶融
した樹脂を注入して前記凸部に対応した部分に凹部を有
する断面路り字状ガスケットに成形することを特徴とす
る電池のガスケット製造法。 ２ 金型の凸部により形成される凹部な有したガスケッ
トの周面又は底面の厚さを１１、前記凹部の深さをｔ２
とした際１１−１２≧０．３ ｍｍとした特許請求の範
囲第１項記載の電池のガスケット製造法。[Claims] 1. A convex portion is provided in a part of the mold corresponding to a part of the circumferential surface or bottom surface of the gasket to be obtained, and a resin injection port is formed in the center of the convex portion. A method for manufacturing a gasket for a battery, comprising injecting molten resin from a resin injection port to form a gasket having a cross-section having a concave portion corresponding to the convex portion. 2 The thickness of the circumferential surface or bottom surface of the gasket having a recess formed by the convex part of the mold is 11, and the depth of the recess is t2.
The method for manufacturing a battery gasket according to claim 1, wherein 11-12≧0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14001276A JPS5828714B2 (en) | 1976-11-19 | 1976-11-19 | Battery gasket manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14001276A JPS5828714B2 (en) | 1976-11-19 | 1976-11-19 | Battery gasket manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5364731A JPS5364731A (en) | 1978-06-09 |
| JPS5828714B2 true JPS5828714B2 (en) | 1983-06-17 |
Family
ID=15258871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14001276A Expired JPS5828714B2 (en) | 1976-11-19 | 1976-11-19 | Battery gasket manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828714B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3502555A1 (en) | 2017-12-21 | 2019-06-26 | Stanley Electric Co., Ltd. | Light source unit for vehicle headlight and vehicle headlight |
| WO2024185394A1 (en) * | 2023-03-08 | 2024-09-12 | パナソニックエナジー株式会社 | Gasket, cylindrical battery, and cylindrical battery manufacturing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH027856A (en) * | 1988-12-23 | 1990-01-11 | Daido Steel Co Ltd | Manufacturing device for rotor of rotary electric machine |
-
1976
- 1976-11-19 JP JP14001276A patent/JPS5828714B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3502555A1 (en) | 2017-12-21 | 2019-06-26 | Stanley Electric Co., Ltd. | Light source unit for vehicle headlight and vehicle headlight |
| WO2024185394A1 (en) * | 2023-03-08 | 2024-09-12 | パナソニックエナジー株式会社 | Gasket, cylindrical battery, and cylindrical battery manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5364731A (en) | 1978-06-09 |
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