JPS63127719U - - Google Patents
Info
- Publication number
- JPS63127719U JPS63127719U JP1957287U JP1957287U JPS63127719U JP S63127719 U JPS63127719 U JP S63127719U JP 1957287 U JP1957287 U JP 1957287U JP 1957287 U JP1957287 U JP 1957287U JP S63127719 U JPS63127719 U JP S63127719U
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- mandrel
- expanded
- tube
- push
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
第１図は本考案の実施例にかかる拡管装置の縦
断面図、第２図は第１図の状態変化図、第３図は
第１図及び第２図の使用例（第１の使用例）で処
理された処理済の円筒管の断面図、第４図は第１
図の拡管装置の第２の使用例を示す説明図、第５
図は第４図の使用例で処理された処理済の円筒管
の断面図、第６図は第１図の拡管装置の第３の使
用例を示す説明図、第７図は第６図の使用例で処
理された処理済の円筒管の断面図、第８図は従来
の拡管装置の縦断面図である。
１……基台、２……押し引き操作装置、３……
心棒、３ａ……基端、３ｂ……先端、４……位置
決め部材、５……大径部材、６……拡径部材。
Fig. 1 is a vertical cross-sectional view of a pipe expansion device according to an embodiment of the present invention, Fig. 2 is a state change diagram of Fig. 1, and Fig. 3 is a usage example of Figs. 1 and 2 (first usage example). ), Figure 4 is a cross-sectional view of the treated cylindrical tube.
Explanatory diagram showing a second example of use of the pipe expansion device shown in Fig. 5.
The figure is a cross-sectional view of the treated cylindrical pipe treated in the usage example of Figure 4, Figure 6 is an explanatory diagram showing a third usage example of the tube expanding device of Figure 1, and Figure 7 is the same as that of Figure 6. FIG. 8 is a cross-sectional view of a treated cylindrical pipe treated in an example of use, and a vertical cross-sectional view of a conventional tube expanding device. 1... base, 2... push/pull operation device, 3...
Mandrel, 3a... base end, 3b... tip, 4... positioning member, 5... large diameter member, 6... diameter expanding member.
Claims (1)
径されるべき円筒管の内部に押通可能なる心棒３
の基端３ａを連結して該押し引き操作装置２を操
作することにより心棒３を直線方向に押し引き操
作せしめ得る如くし、さらに前記心棒３の基端３
ａ側寄り外周に前記被拡径管における拡径される
部位を位置決めするための位置決め部材４を前記
心棒３の基端３ａ側方向に移動不能なる如くして
遊嵌させる一方、前記心棒３の先端３ｂ側に前記
被拡径管内に挿通可能なる外径をもつ大径部材５
を設けるとともに、前記心棒３の外周における前
記位置決め部材４と前記大径部材５の間に、ゴム
などの弾性変形可能なる材料で円筒形に成形され
しかも前記心棒３が反押し引き操作装置側に押し
出されているときには外径寸法が前記被拡径管の
内径と同径かそれより小径となり且つ前記心棒３
が押し引き操作装置側に引き込まれているときに
は前記位置決め部材４と前記大径部材５との間で
圧縮されてその外径寸法が前記被拡径管の内径よ
り大きくなる如く変化して被拡径管を内側から拡
径せしめ得る如く作用する拡径部材６を装着して
構成されていることを特徴とする拡管装置。 A mandrel 3 that can be pushed into the inside of a cylindrical tube whose diameter is to be expanded by a push-pull operating device 2 installed on a base 1
By connecting the proximal end 3a of the mandrel 3 and operating the push/pull operation device 2, the mandrel 3 can be pushed and pulled in a linear direction.
A positioning member 4 for positioning the portion of the diameter-expanded tube to be diameter-expanded is loosely fitted on the outer periphery of the tube toward the a side so as to be immovable toward the proximal end 3a of the mandrel 3. A large-diameter member 5 having an outer diameter that can be inserted into the diameter-expanded tube on the side of the tip 3b.
is provided between the positioning member 4 and the large diameter member 5 on the outer periphery of the mandrel 3, the mandrel 3 is formed into a cylindrical shape from an elastically deformable material such as rubber, and the mandrel 3 is located on the side opposite to the push/pull operating device. When being pushed out, the outer diameter becomes the same as or smaller than the inner diameter of the tube to be expanded, and the mandrel 3
When the pipe is being pulled toward the push/pull operation device, it is compressed between the positioning member 4 and the large diameter member 5, and its outer diameter changes to become larger than the inner diameter of the pipe to be expanded, causing the pipe to be expanded. A tube expanding device characterized in that it is equipped with a diameter expanding member 6 that acts to expand the diameter of a diameter tube from the inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1957287U JPS63127719U (en) | 1987-02-12 | 1987-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1957287U JPS63127719U (en) | 1987-02-12 | 1987-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63127719U true JPS63127719U (en) | 1988-08-22 |
Family
ID=30814289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1957287U Pending JPS63127719U (en) | 1987-02-12 | 1987-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63127719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010066974A (en) * | 2000-08-10 | 2001-07-12 | 지정철 | A street lamp pole manufacture device and manufacture method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263154A (en) * | 1975-11-19 | 1977-05-25 | Yamaha Motor Co Ltd | Apparatus for forming pipe end |
-
1987
- 1987-02-12 JP JP1957287U patent/JPS63127719U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263154A (en) * | 1975-11-19 | 1977-05-25 | Yamaha Motor Co Ltd | Apparatus for forming pipe end |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010066974A (en) * | 2000-08-10 | 2001-07-12 | 지정철 | A street lamp pole manufacture device and manufacture method |
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