JPH0452825B2 - - Google Patents
Info
- Publication number
- JPH0452825B2 JPH0452825B2 JP60073690A JP7369085A JPH0452825B2 JP H0452825 B2 JPH0452825 B2 JP H0452825B2 JP 60073690 A JP60073690 A JP 60073690A JP 7369085 A JP7369085 A JP 7369085A JP H0452825 B2 JPH0452825 B2 JP H0452825B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- diameter
- pipe
- small
- diameter pipe
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Road Signs Or Road Markings (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は道路標識や街路灯等の支柱として使用
される段付きポールの製造方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of manufacturing a stepped pole used as a support for road signs, street lights, etc.
（従来の技術）
従来、この種の段付きポールは第４図の如く、
金属製小径管６の下端部にリング６１が外挿され
て溶接され、小径管６の下端部が金属製大径管５
の上端部に挿入され、大径管５の上端縁が小径管
６の外面に溶接されていた。(Prior art) Conventionally, this type of stepped pole is as shown in Fig. 4.
A ring 61 is externally inserted and welded to the lower end of the small diameter metal pipe 6, and the lower end of the small diameter pipe 6 is connected to the large diameter metal pipe 5.
The upper end edge of the large diameter tube 5 was welded to the outer surface of the small diameter tube 6.
（発明が解決しようとする問題点）
しかしながら、かかる従来の段付きポールは、
溶接部が多く製造に手間がかかると共に、大径管
５と小径管６の中心軸がずれやすく均一な品質の
ポールが得がたい問題点があつた。又、単に大径
管５の真直ぐな上端縁が小径管６の外面に溶接さ
れているので、溶接部の外観が悪い問題点があつ
た。(Problems to be solved by the invention) However, such conventional stepped poles
There are many welded parts and it takes time and effort to manufacture, and the central axes of the large diameter tube 5 and the small diameter tube 6 tend to shift, making it difficult to obtain a pole of uniform quality. Further, since the straight upper edge of the large diameter tube 5 is simply welded to the outer surface of the small diameter tube 6, there is a problem that the welded portion looks bad.
（問題点を解決するための手段）
本発明はかかる従来の問題点に鑑み鋭意研究の
結果、上述の問題点を解決した段付きポールの製
造方法を完成したものである。(Means for Solving the Problems) The present invention has been made as a result of intensive research in view of the problems of the prior art, and has completed a method for manufacturing a stepped pole that solves the above-mentioned problems.
すなわち、本発明段付きポールの製造方法は、
金属製大径管の一端部に金属製小径管の一端部を
挿入し、大径管内の小径管端縁を第１の金型によ
り拡開して大径管内面に当接させると同時に、第
１の金型と中心軸を合致させた第２の金型により
大径管の端縁を絞り加工した後、大径管の端縁を
小径管外面に溶接することを骨子としたものであ
る。 That is, the method for manufacturing the stepped pole of the present invention is as follows:
Inserting one end of a small-diameter metal pipe into one end of a large-diameter metal pipe, expanding the edge of the small-diameter pipe inside the large-diameter pipe using a first mold and bringing it into contact with the inner surface of the large-diameter pipe, The main idea is to draw the edge of the large-diameter tube using a second die whose center axis matches that of the first die, and then weld the edge of the large-diameter tube to the outer surface of the small-diameter tube. be.
（実施例）
以下、図面を参照しながら本発明について説明
する。(Example) The present invention will be described below with reference to the drawings.
第１図は本発明製造方法により製造された段付
きポールの要部を示す断面図、第２図は同段付き
ポールの一実施例を示す一部切欠正面図である。 FIG. 1 is a sectional view showing a main part of a stepped pole manufactured by the manufacturing method of the present invention, and FIG. 2 is a partially cutaway front view showing an embodiment of the stepped pole.
第１図、第２図において、１は金属製大径管で
あつて、段付きポールの下部ポールを形成するも
のである。大径管１は通常断面円形となされてい
るが、断面だ円形、多角形等の他の形成となされ
ていてもよい。又、大径管１の上端縁１１は絞り
加工されて後述の小径管２の外面に溶接一体化さ
れている。 In FIGS. 1 and 2, reference numeral 1 denotes a large-diameter metal tube that forms the lower pole of the stepped pole. Although the large diameter tube 1 usually has a circular cross section, it may have other shapes such as an oval cross section or a polygonal cross section. Further, the upper end edge 11 of the large diameter tube 1 is drawn and integrated with the outer surface of the small diameter tube 2, which will be described later, by welding.
小径管２は金属製となされ、段付きポールの上
部ポールを形成するものである。該小径管２は大
径管１と同様な断面形状を有し、その外径が大径
管１の内径よりもやや小さくなされている。又、
小径管２は下端部が大径管１の上端部に挿入され
ると共に、下端縁２１が外方に拡開されて大径管
１の内面に当接され、小径管２が大径管１に対し
てがたつかないようになされている。さらに、小
径管２は大径管１と中心軸が合致されて大径管１
に挿入一体化されている。 The small diameter tube 2 is made of metal and forms the upper pole of the stepped pole. The small diameter tube 2 has the same cross-sectional shape as the large diameter tube 1, and its outer diameter is slightly smaller than the inner diameter of the large diameter tube 1. or,
The lower end of the small diameter pipe 2 is inserted into the upper end of the large diameter pipe 1, and the lower end edge 21 is expanded outward and comes into contact with the inner surface of the large diameter pipe 1. It is designed so that it does not rattle against the surface. Furthermore, the center axis of the small diameter pipe 2 and the large diameter pipe 1 are aligned, so that the small diameter pipe 2 and the large diameter pipe 1 are aligned.
It is integrated into the insert.
第３図は本発明段付きポールの製造方法を示す
説明図である。 FIG. 3 is an explanatory diagram showing a method of manufacturing the stepped pole of the present invention.
第３図において、１及び２はそれぞれ上述と同
様の金属製大径管、金属製小径管、３は第１の金
型、４は第２の金型である。 In FIG. 3, 1 and 2 are a metal large-diameter tube and a metal small-diameter tube similar to those described above, 3 is a first mold, and 4 is a second mold.
第１の金型３は大径管１の内径よりやや小径の
雄型となされ、小径管２の端縁２１を拡開すべく
テーパー部３１が設けられている。該金型３は所
定長さの支持部３２を介して金型基部３３に連結
一体化されている。金型基部３３は大径管１の外
径よりも大径となされ、プレス機（図示せず）に
一体化されている。 The first mold 3 is a male mold having a slightly smaller diameter than the inner diameter of the large diameter tube 1, and is provided with a tapered portion 31 to widen the end edge 21 of the small diameter tube 2. The mold 3 is integrally connected to a mold base 33 via a support portion 32 having a predetermined length. The mold base 33 has a diameter larger than the outer diameter of the large diameter tube 1, and is integrated into a press machine (not shown).
第２の金型４は小径管２に外挿しうる内径を有
する雌型となされ、大径管１の端縁１１′を絞り
加工すべくテーパー部４１が設けられている。該
金型４は所定長さの支持部４２を介して金型基部
４３に連結一体化されると共に、第１の金型３と
中心軸が合致するように配置されている。金型基
部４３は小径管２の外径よりも大径となされ、プ
レス機（図示せず）に一体化されている。 The second mold 4 is a female mold having an inner diameter that can be fitted onto the small diameter tube 2, and is provided with a tapered portion 41 for drawing the end edge 11' of the large diameter tube 1. The mold 4 is integrally connected to a mold base 43 via a support portion 42 having a predetermined length, and is arranged so that its central axis coincides with that of the first mold 3. The mold base 43 has a larger diameter than the outer diameter of the small diameter tube 2, and is integrated into a press (not shown).
上述の第１の金型３と第２の金型４は互に対向
するように配置され、両方の金型３，４がプレス
機（図示せず）により対向する方向に摺動するよ
うになされていてもよいし、金型３，４の一方が
固定されて他方のみが上述と同様に摺動するよう
になされていてもよい。 The first mold 3 and the second mold 4 described above are arranged to face each other, and both molds 3 and 4 are slid in opposite directions by a press machine (not shown). Alternatively, one of the molds 3 and 4 may be fixed and only the other may slide in the same manner as described above.
しかして段付きポールを製造するには、大径管
１の一端部に小径管２の一端部を挿入し、大径管
１内の小径管２端部に第１の金型３を当接すると
共に金型基部３３を大径管１他端部に当接するよ
うにし、第２の金型４を小径管２に外挿状態とし
て大径管１端部に当接すると共に金型基部４３を
小径管２他端部に当接するようになす。次いで、
両金型基部３３，４３をプレス機（図示せず）の
作用により第３図の矢印方向に圧縮し、第１の金
型３のテーパー部３１により小径管２の端縁２
１′を拡開して大径管１内面に当接させる。同時
に第２の金型４のテーパー部４１により大径管１
の端縁１１′を絞り加工する。次いで、プレス成
形後大径管１の端縁１１′を小径管２外面に溶接
すればよい。 In order to manufacture the stepped pole, one end of the small diameter pipe 2 is inserted into one end of the large diameter pipe 1, and the first mold 3 is brought into contact with the end of the small diameter pipe 2 inside the large diameter pipe 1. At the same time, the mold base 33 is brought into contact with the other end of the large diameter pipe 1, and the second mold 4 is inserted into the small diameter pipe 2 and brought into contact with the end of the large diameter pipe 1, and the mold base 43 is brought into contact with the other end of the large diameter pipe 1. It is brought into contact with the other end of the tube 2. Then,
Both mold bases 33 and 43 are compressed in the direction of the arrow in FIG. 3 by the action of a press machine (not shown), and the end edge 2 of the small diameter pipe 2 is
1' is expanded and brought into contact with the inner surface of the large diameter pipe 1. At the same time, the large diameter pipe 1 is
The end edge 11' is drawn. Next, after press forming, the end edge 11' of the large diameter tube 1 may be welded to the outer surface of the small diameter tube 2.
又、本発明製造方法は金型基部３３，４３を第
３図の矢印方向に圧縮して第１の金型３及び第２
の金型４によりプレス成形するものであつて、プ
レス成形に際して第３図の状態となるように大径
管１、小径管２及び第１の金型３、第２の金型４
を順次所定位置に配置すればよい。この配置方法
としては金型３，４を大径管１，小径管２に内
挿、外挿するように摺動させたり、大径管１、小
径管２を金型３，４に外挿、内挿すると共に金型
３，４を摺動させたり適宜方法が採用されればよ
い。 Further, the manufacturing method of the present invention compresses the mold bases 33 and 43 in the direction of the arrow in FIG.
The large-diameter tube 1, the small-diameter tube 2, the first die 3, and the second die 4 are press-formed using a die 4 of the type shown in FIG.
may be sequentially arranged at predetermined positions. This arrangement method involves sliding the molds 3 and 4 into and out of the large-diameter pipe 1 and small-diameter pipe 2, or inserting the large-diameter pipe 1 and small-diameter pipe 2 into the molds 3 and 4. , an appropriate method such as interpolation and sliding of the molds 3 and 4 may be adopted.
（発明の効果）
以上詳述した如く、本発明は第１の金型により
小径管の端縁を拡開して大径管内面に当接させる
と同時に、第１の金型と中心軸を合致させた第２
の金型により大径管の端縁を絞り加工するので、
大径管と小径管の中心軸を容易に合わせることが
できると共に、従来の如く小径管にリングを溶接
する必要がなく溶接部分を少なくでき、製造に手
間がかからない。(Effects of the Invention) As described in detail above, the present invention allows the end edge of the small diameter pipe to be expanded and brought into contact with the inner surface of the large diameter pipe using the first mold, and at the same time, the first mold and the central axis are connected to each other. Matched second
Since the edge of the large diameter pipe is drawn using a mold,
The central axes of the large-diameter pipe and the small-diameter pipe can be easily aligned, and there is no need to weld a ring to the small-diameter pipe as in the conventional method, so the number of welded parts can be reduced, and manufacturing is not labor-intensive.
又、大径管の端縁を絞り加工した後、該端縁を
小径管外面に溶接するので、溶接部分の外観を向
上させることができると共に、上述した大径管と
小径管の中心軸を容易に合わせることができるこ
とと相まつて均一な品質のポールを得ることがで
きる。 In addition, since the end edge of the large diameter pipe is drawn and then welded to the outer surface of the small diameter pipe, the appearance of the welded part can be improved, and the central axes of the large diameter pipe and small diameter pipe can be aligned. Coupled with the fact that it can be easily matched, it is possible to obtain poles of uniform quality.
第１図は本発明製造方法により製造された段付
きポールの要部を示す断面図、第２図は同段付き
ポールの一実施例を示す一部切欠正面図、第３図
は本発明製造方法を示す説明図、第４図は従来の
段付きポールを示す一部切欠断面図である。
１……大径管、１１……上端縁、１１′……端
縁、２……小径管、２１……下端縁、２１′……
端縁、３……第１の金型、３１……テーパー部、
３２……支持部、３３……金型基部、４……第２
の金型、４１……テーパー部、４２……支持部、
４３……金型基部。
FIG. 1 is a sectional view showing the main parts of a stepped pole manufactured by the manufacturing method of the present invention, FIG. 2 is a partially cutaway front view showing an embodiment of the stepped pole, and FIG. An explanatory diagram showing the method, FIG. 4 is a partially cutaway sectional view showing a conventional stepped pole. 1... Large diameter pipe, 11... Upper end edge, 11'... End edge, 2... Small diameter pipe, 21... Lower end edge, 21'...
Edge, 3...first mold, 31...tapered part,
32...Support part, 33...Mold base, 4...Second
mold, 41... taper part, 42... support part,
43...Mold base.
Claims (1)
部を挿入し、大径管内の小径管端部に第１の金型
を当接すると共に該金型と連結された管外の金型
基部を大径管他端部に当接し、第１の金型と中心
軸を合致させかつ小径管に外挿状態とした第２の
金型を大径管端部に当接すると共に該金型と連結
された管外の金型基部を小径管他端部に当接し、
上記両金型基部を圧縮し、第１の金型により小径
管の端縁を拡開して大径管内面に当接させると同
時に第２の金型により大径管の端縁を絞り加工し
た後に、該大径管の端縁を小径管外面に溶接する
段付きポールの製造方法。1. Insert one end of a small-diameter metal pipe into one end of a large-diameter metal pipe, and abut the first mold against the end of the small-diameter pipe inside the large-diameter pipe, and press the metal outside the pipe connected to the mold. The mold base is brought into contact with the other end of the large-diameter pipe, and the second mold, whose central axis is aligned with the first mold and which is inserted into the small-diameter pipe, is brought into contact with the end of the large-diameter pipe, and the second mold is brought into contact with the end of the large-diameter pipe. The mold base outside the pipe connected to the mold is brought into contact with the other end of the small diameter pipe,
The bases of both of the above molds are compressed, and the edge of the small-diameter tube is expanded with the first mold and brought into contact with the inner surface of the large-diameter tube, and at the same time, the edge of the large-diameter tube is drawn with the second mold. After that, the edge of the large diameter pipe is welded to the outer surface of the small diameter pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60073690A JPS61233179A (en) | 1985-04-08 | 1985-04-08 | Stepped pole and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60073690A JPS61233179A (en) | 1985-04-08 | 1985-04-08 | Stepped pole and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61233179A JPS61233179A (en) | 1986-10-17 |
| JPH0452825B2 true JPH0452825B2 (en) | 1992-08-24 |
Family
ID=13525459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60073690A Granted JPS61233179A (en) | 1985-04-08 | 1985-04-08 | Stepped pole and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61233179A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6371212U (en) * | 1986-10-27 | 1988-05-13 | ||
| JP4112134B2 (en) * | 1999-11-12 | 2008-07-02 | 帝金株式会社 | Car stop |
| JP4589637B2 (en) * | 2004-02-19 | 2010-12-01 | 株式会社岡村製作所 | Bench support structure |
| JP6271418B2 (en) * | 2011-05-17 | 2018-01-31 | シンセス・ゲーエムベーハーＳｙｎｔｈｅｓ ＧｍｂＨ | Nested telescopic screw for femoral neck fracture |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341956U (en) * | 1976-09-14 | 1978-04-11 |
-
1985
- 1985-04-08 JP JP60073690A patent/JPS61233179A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341956U (en) * | 1976-09-14 | 1978-04-11 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61233179A (en) | 1986-10-17 |
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