DK671488A - PROCEDURE AND APPARATUS FOR PREPARING FAKE INSERT - Google Patents
PROCEDURE AND APPARATUS FOR PREPARING FAKE INSERTInfo
- Publication number
- DK671488A DK671488A DK671488A DK671488A DK671488A DK 671488 A DK671488 A DK 671488A DK 671488 A DK671488 A DK 671488A DK 671488 A DK671488 A DK 671488A DK 671488 A DK671488 A DK 671488A
- Authority
- DK
- Denmark
- Prior art keywords
- seamed
- pipe profile
- section
- pipe
- seamed connection
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/10—Making tubes with riveted seams or with non-welded and non-soldered seams
- B21C37/101—Making of the seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/10—Making tubes with riveted seams or with non-welded and non-soldered seams
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Vehicle Body Suspensions (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
In a method for making lock-seamed push-in downpipes, the longitudinal edges of pipe profiles prerounded by forming sheet-metal strip blanks of a certain width and length under bending conditions are set on edge, then brought together to form a seamed connection, whereupon the latter is bent over flat onto the outer circumference of the pipe profile. In order to achieve high surface quality of the downpipes, the seamed connection is formed by forming the longitudinal edges of the pipe profile in several sections under bending conditions, using a rotary tool motion, the pipe profile is transported in the delivery direction by the length of the respectively formed section of the seamed connection and, in the production of the last section of the seamed connection, the pipe profile is widened in this section.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3740750 | 1987-12-02 | ||
DE19873740750 DE3740750A1 (en) | 1987-12-02 | 1987-12-02 | METHOD AND DEVICE FOR PRODUCING RAINFALL PIPES |
Publications (3)
Publication Number | Publication Date |
---|---|
DK671488D0 DK671488D0 (en) | 1988-12-01 |
DK671488A true DK671488A (en) | 1989-06-03 |
DK169907B1 DK169907B1 (en) | 1995-04-03 |
Family
ID=6341676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK671488A DK169907B1 (en) | 1987-12-02 | 1988-12-01 | Method and apparatus for making folded, insertable downpipes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0318905B1 (en) |
AT (1) | ATE107203T1 (en) |
DE (2) | DE3740750A1 (en) |
DK (1) | DK169907B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991016156A1 (en) * | 1990-04-12 | 1991-10-31 | Die-Craft Engineering Pty. Ltd | Tapered conduit |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1408232A (en) * | 1917-05-12 | 1922-02-28 | Frank H Stolp | Method of forming sheet metal |
US2644416A (en) * | 1949-02-02 | 1953-07-07 | Oldberg Mfg Company | Apparatus for forming tubes |
GB867915A (en) * | 1956-06-02 | 1961-05-10 | Metal Developments Ltd | Improvements relating to columns |
DE3022671A1 (en) * | 1980-06-18 | 1982-01-14 | Krückels, Gerhard, Dipl.-Ing., 7860 Schopfheim | PROFILING MACHINE AND METHOD FOR PRODUCING A PROFILE |
-
1987
- 1987-12-02 DE DE19873740750 patent/DE3740750A1/en not_active Withdrawn
-
1988
- 1988-11-29 EP EP88119856A patent/EP0318905B1/en not_active Expired - Lifetime
- 1988-11-29 AT AT88119856T patent/ATE107203T1/en not_active IP Right Cessation
- 1988-11-29 DE DE3850225T patent/DE3850225D1/en not_active Expired - Lifetime
- 1988-12-01 DK DK671488A patent/DK169907B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3850225D1 (en) | 1994-07-21 |
ATE107203T1 (en) | 1994-07-15 |
DE3740750A1 (en) | 1989-06-15 |
EP0318905A3 (en) | 1990-09-19 |
DK169907B1 (en) | 1995-04-03 |
EP0318905A2 (en) | 1989-06-07 |
DK671488D0 (en) | 1988-12-01 |
EP0318905B1 (en) | 1994-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B1 | Patent granted (law 1993) | ||
PBP | Patent lapsed |