JPS6230066B2 - - Google Patents
Info
- Publication number
- JPS6230066B2 JPS6230066B2 JP1025082A JP1025082A JPS6230066B2 JP S6230066 B2 JPS6230066 B2 JP S6230066B2 JP 1025082 A JP1025082 A JP 1025082A JP 1025082 A JP1025082 A JP 1025082A JP S6230066 B2 JPS6230066 B2 JP S6230066B2
- Authority
- JP
- Japan
- Prior art keywords
- chain
- mold
- casting
- partial
- parts
- 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
- 238000005266 casting Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 3
- 229910001296 Malleable iron Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
- B22D25/023—Casting chains or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【発明の詳細な説明】
この発明は主としてマンホールの鉄蓋と鉄枠と
の間に配設される鎖の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a method of manufacturing a chain disposed between a manhole iron cover and an iron frame.
従来、マンホール鉄蓋と鉄枠との連結の為に配
設されている鎖はSBC材で形成されていた。しか
しマンホール鉄蓋が配設される下水道管内には
H2，Ｓ，CH4等のガスが発生し、短期間のうちに
腐蝕が進んでしまい、マンホール鉄蓋の耐用年数
よりはるかに速く使用できなくなつてしまう欠点
が存在した。そこで下水道管内に配設されても耐
食性に優れた鎖として球状黒鉛鋳鉄又は可鍜鋳鉄
にて鋳造された鎖が実願昭56−50752号或いは実
願昭56−89528号に提案されている。これらの鎖
は形の異なる閉鎖部と開鎖部とを鋳造にて別個に
製作し、閉鎖部と開鎖部とを交互に組み合わせ、
開鎖部の空隙部分付近を加熱したところで力を加
え空隙部分を閉じることにより、鎖を形成するも
のであるが、閉鎖部と開鎖部との連結工程の作業
能率がはなはだ悪く、製品価格も高価になる欠点
が存在した。 Conventionally, the chains installed to connect the manhole iron cover and the iron frame were made of SBC material. However, inside the sewer pipe where the manhole cover is installed,
Gases such as H 2 , S, and CH 4 are generated, corrosion progresses in a short period of time, and the iron manhole cover becomes unusable much faster than its service life. Therefore, a chain cast from spheroidal graphite cast iron or stainless steel cast iron has been proposed in Utility Model Application No. 56-50752 or Utility Model Application No. 56-89528 as a chain that has excellent corrosion resistance even when installed in a sewer pipe. These chains have closed parts and open chain parts of different shapes made separately by casting, and the closed parts and open chain parts are combined alternately.
Chains are formed by heating the area around the gap in the open chain and then applying force to close the gap, but the process of connecting the closed and open chain is extremely inefficient and the product is expensive. There was a drawback.
本発明は従来の欠点を解決するもので、生産性
の高い鋳造による鎖の製造方法を提供することを
目的とするものである。 The present invention solves the drawbacks of the prior art and aims to provide a highly productive method for manufacturing chains by casting.
以下、本発明の実施例を図面に従つて説明す
る。第１図は直線状の連結部の両側に円状の閉鎖
部を有する同形状の構成部材を複数個連結してな
る鎖を示し、この鎖の構成部材の１を第１の鎖部
１とし、他の１を第２の鎖部１５として、これら
第１の鎖部１と第２の鎖部１５とを交互に連鎖さ
せて鎖を構成するものとする。そこで、まず最初
に、通常の方法にて第１の鎖部１を鋳造する。す
なわち鋳型に球状黒鉛鋳鉄或は可鍜鋳鉄等の鋳鉄
を鋳込んで第２図のような第１の鎖部１を鋳造す
る。この第１の鎖部１は直線状の連結部２の両側
にそれぞれ円形状の閉鎖部３，３が形成されてい
る。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a chain formed by connecting a plurality of structural members of the same shape, each having circular closing parts on both sides of a linear connecting part, and one of the structural members of this chain is referred to as the first chain part 1. , the other 1 is a second chain part 15, and these first chain parts 1 and second chain parts 15 are alternately linked to form a chain. Therefore, first, the first chain part 1 is cast by a normal method. That is, the first chain portion 1 as shown in FIG. 2 is cast by pouring cast iron such as spheroidal graphite cast iron or malleable cast iron into a mold. This first chain portion 1 has circular closing portions 3, 3 formed on both sides of a linear connecting portion 2, respectively.
そして、次に第３図ａ，ｂのように、でき上が
つた第１の鎖部１の閉鎖部３，３の内側に形成さ
れた閉鎖内部４，４のうち一方に鋳物砂の型材５
を充填すると共に、これに貫通穴６をあけて、後
に明らかにするように、第２の鎖部１５を鋳造す
るためのこの部分鋳型７では第３図ｂに図示のよ
うに、貫通穴６の長さは閉鎖部３を形成する素材
の断面径（厚み）と同一にされるものである。 Next, as shown in FIGS. 3a and 3b, a molding sand molding material 5 is attached to one of the closed interiors 4, 4 formed inside the closed parts 3, 3 of the completed first chain part 1.
As shown in FIG. 3b, in this partial mold 7 for casting the second chain portion 15, a through hole 6 is formed. The length of is made the same as the cross-sectional diameter (thickness) of the material forming the closure part 3.
次に、第４図及び第５図のように、第１の鎖部
１の鋳型の形状とほぼ同形状で、両側に閉鎖部３
を形成する素材の断面径（厚み）より短い長さ
の、言い換えれば貫通穴６より短い長さの環状空
洞８の切断部９，１０を設けた第２の鎖部１５を
鋳造するための要部鋳型１１を製作し、さらに第
６図のように、要部鋳型１１の両側に前記部分鋳
型７，７を埋込んで、要部鋳型１１の切断部９，
１０に部分鋳型７，７の貫通穴６，６を配設する
ことにより、第２の鎖部１５の鋳型１２を製作す
る。すなわち、部分鋳型７，７の型材５，５を要
部鋳型１１の両側部に位置せして垂直に埋込む
と、部分鋳型７，７の環状空洞８切断部９，１０
と部分鋳型７，７の閉鎖部３，３との寸法関係は
前述のようなものであるので、環状空洞８の切断
部９，１０は、部分鋳型７，７の閉鎖部３，３が
埋込まれる過程で閉鎖部３，３に崩されて消滅
し、この切断部９，１０の位置に部分鋳型７，７
の貫通穴６，６が代わつて位置することになる。
したがつて要部鋳型１１の両側の一部が欠けた環
状空洞８，８は、その欠けた一部が貫通穴６，６
で接続されて完全な環状になる。 Next, as shown in FIG. 4 and FIG.
The key points for casting the second chain part 15 are provided with cut parts 9 and 10 of the annular cavity 8 having a length shorter than the cross-sectional diameter (thickness) of the material forming the through hole 6, in other words, a length shorter than the through hole 6. A mold for the main part 11 is manufactured, and as shown in FIG.
The mold 12 of the second chain portion 15 is manufactured by arranging the through holes 6, 6 of the partial molds 7, 7 in the mold 10. That is, when the mold materials 5, 5 of the partial molds 7, 7 are positioned on both sides of the main mold 11 and embedded vertically, the annular cavity 8 cut portions 9, 10 of the partial molds 7, 7 are formed.
Since the dimensional relationship between the closing portions 3, 3 of the partial molds 7, 7 is as described above, the cut portions 9, 10 of the annular cavity 8 are cut out when the closing portions 3, 3 of the partial molds 7, 7 are filled. In the process of being inserted, it is destroyed by the closing parts 3, 3 and disappears, and partial molds 7, 7 are formed at the positions of the cut parts 9, 10.
The through holes 6, 6 will be located in their place.
Therefore, the annular cavities 8, 8 with parts missing on both sides of the main mold 11 are formed into through holes 6, 6.
are connected to form a complete ring.
しかる後に、鋳型１２に球状黒鉛鋳鉄或いは可
鍜鋳鉄等の鋳鉄を鋳込んで第２の鎖部１５を鋳造
すれば、第１図のように、第２の鎖部１５の両側
にそれぞれ第１の鎖部１，１が連結された鎖が製
造されることになる。なお、以上の如く１回に３
個の鎖構成部材を連結し、この作業を何回かくり
返すことによつて所定の長さの鎖を製造してもよ
いし、また前記の方法で一回に複数個の第２の鎖
部１５を鋳造するようにすれば所定の長さの鎖を
一度に製造することができる。この場合には、第
２の鎖部１５を鋳造するための鋳型の間に配設さ
れる第１の鎖部１はその両方の閉鎖部３，３にそ
れぞれ部分鋳型７を設けなければならない。 After that, if cast iron such as spheroidal graphite cast iron or malleable cast iron is cast into the mold 12 and the second chain part 15 is cast, as shown in FIG. A chain in which the chain portions 1, 1 of the chain parts 1, 1 are connected will be produced. In addition, as mentioned above, 3 at a time
A chain of a predetermined length may be manufactured by connecting two chain constituent members and repeating this operation several times, or a plurality of second chains may be manufactured at one time by the method described above. By casting the section 15, a chain of a predetermined length can be manufactured at once. In this case, the first chain part 1, which is arranged between the molds for casting the second chain part 15, must be provided with a partial mold 7 in each of its two closing parts 3,3.
なお、鎖の形状としては第７図のような全体が
輪状のものもある。この場合にも最初の実施例と
全く同じ方法で実施することができる。すなわ
ち、第８図のように第１の鎖部２１の閉鎖内部２
３に型材２５を充填し、これに貫通穴２６をあけ
て、第２の鎖部３５の部分鋳型２７を製作する。
そして、第９図のように、この部分鋳型２７をそ
れぞれ環状空洞２８の切断部２９，３０を設けた
第２の鎖部３５の要部鋳型３１に埋込んで切断部
２９，３０に前記部分鋳型２７の貫通穴２６を配
設した第２の鎖部３５の鋳型３２で第２の鎖部３
５を鋳造すると同時に鎖を製造するものである。 In addition, the shape of the chain may be entirely ring-shaped as shown in FIG. In this case as well, it can be carried out in exactly the same manner as in the first embodiment. That is, as shown in FIG.
3 is filled with a mold material 25, and a through hole 26 is made in it to produce a partial mold 27 of the second chain portion 35.
Then, as shown in FIG. 9, this partial mold 27 is embedded in the main part mold 31 of the second chain part 35 provided with the cutting parts 29 and 30 of the annular cavity 28, and the said parts are inserted into the cutting parts 29 and 30. The second chain part 3 is formed by the mold 32 of the second chain part 35 in which the through hole 26 of the mold 27 is arranged.
The chain is manufactured at the same time as the chain is cast.
なお、第１の鎖部２１と第２の鎖部３５とを連
続して製造する場合には、第８図の貫通穴２６を
左右にあけた部分鋳型２７を要部鋳型３１と３１
の間に配設しなければならない。 In addition, when manufacturing the first chain part 21 and the second chain part 35 continuously, the partial mold 27 with the through holes 26 on the left and right sides of FIG. 8 is used as the main part mold 31 and 31.
must be placed between.
以上のように、本発明の鎖の製造方法は、鎖構
成部材の鋳造と同時にそれに相隣れる鎖構成部材
との連結ができるので、鎖構成部材の連結に要す
る工程を省略することができ、鋳造による鎖の製
造における生産性が上がり、且つ製品価格も安価
にすることが可能になつた。 As described above, in the chain manufacturing method of the present invention, it is possible to connect adjacent chain members at the same time as casting a chain member, so that the steps required for connecting chain members can be omitted. Productivity in manufacturing chains by casting has increased, and it has become possible to reduce product prices.
第１図乃至第６図は本発明の一の実施例を説明
するためのもので、第１図は鎖の正面図、第２図
は第１の鎖部の平面図、第３図ａは第２の鎖部の
部分鋳型の平面図、第３図ｂは第３図ａのａ―ａ
線断面図、第４図は第２の鎖部の要部鋳型の平面
図、第５図は第４図のＡ―Ａ線断面図、第６図は
第２の鎖部の鋳型の説明図、また第７図乃至第９
図は本発明の他の実施例を説明するためのもの
で、第７図は鎖の正面図、第８図は第２の鎖部の
部分鋳型、第９図は第２の鎖部の鋳型の説明図で
ある。
１，２１…第１の鎖部、４，２３…閉鎖内部、
６，２６…貫通穴、７，２７…部分鋳型、８，２
８…環状空洞、９，１０，２９，３０…切断部、
１１，３１…要部鋳型、１２，３２…第２の鎖部
の鋳型、１５，３５…第２の鎖部。
Figures 1 to 6 are for explaining one embodiment of the present invention, Figure 1 is a front view of the chain, Figure 2 is a plan view of the first chain part, and Figure 3a is a A plan view of the partial mold of the second strand, Figure 3b is a-a of Figure 3a.
Line sectional view, Figure 4 is a plan view of the main part mold of the second chain part, Figure 5 is a cross-sectional view taken along line AA in Figure 4, and Figure 6 is an explanatory diagram of the mold of the second chain part. , and Figures 7 to 9
The figures are for explaining other embodiments of the present invention; FIG. 7 is a front view of the strand, FIG. 8 is a partial template of the second strand, and FIG. 9 is a template of the second strand. FIG. 1, 21...first chain part, 4,23...closed interior,
6, 26... Through hole, 7, 27... Partial mold, 8, 2
8... Annular cavity, 9, 10, 29, 30... Cutting part,
11, 31... Main part template, 12, 32... Second chain part template, 15, 35... Second chain part.
Claims (1)
部の閉鎖内部に型材を充填するとともに貫通穴を
あけて第２の鎖部を鋳造するための部分鋳型を製
作する工程と、両側に環状空洞の切断部を設けた
第２の鎖部を鋳造するための要部鋳型を製作し、
この要部鋳型の両側に前記部分鋳型を埋込んで要
部鋳型の環状空洞の切断部に部分鋳型の貫通穴を
配設し環状空洞を形成することにより第２の鎖部
の鋳型を製作する工程と、この第２の鎖部の鋳型
に湯を鋳込んで両側がそれぞれ第１の鎖部と連結
される第２の鎖部を鋳造する工程と、からなるこ
とを特徴とする鎖の製造方法。1. A step of casting a first chain portion; a step of filling the closed interior of the first chain portion with a mold material and making a through hole to produce a partial mold for casting a second chain portion; A main part mold for casting the second chain part having an annular hollow cutting part on both sides is manufactured,
A mold for the second chain part is manufactured by embedding the partial molds on both sides of this main part mold and forming a ring cavity by arranging a through hole in the partial mold at the cut part of the annular cavity of the main part mold. and a step of casting hot water into a mold for the second chain part to cast a second chain part whose both sides are respectively connected to the first chain part. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1025082A JPS58128265A (en) | 1982-01-27 | 1982-01-27 | Production of chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1025082A JPS58128265A (en) | 1982-01-27 | 1982-01-27 | Production of chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58128265A JPS58128265A (en) | 1983-07-30 |
| JPS6230066B2 true JPS6230066B2 (en) | 1987-06-30 |
Family
ID=11745058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1025082A Granted JPS58128265A (en) | 1982-01-27 | 1982-01-27 | Production of chain |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58128265A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301348A (en) * | 1994-05-06 | 1995-11-14 | Kitz Corp | Angle-shaped ball valve |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6121381U (en) * | 1984-07-13 | 1986-02-07 | セイコ−産業株式会社 | Display shelf for building exterior wall |
| JPS61143728U (en) * | 1985-02-22 | 1986-09-05 | ||
| JPS61143729U (en) * | 1985-02-22 | 1986-09-05 |
-
1982
- 1982-01-27 JP JP1025082A patent/JPS58128265A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301348A (en) * | 1994-05-06 | 1995-11-14 | Kitz Corp | Angle-shaped ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58128265A (en) | 1983-07-30 |
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