DK671488D0 - PROCEDURE AND APPARATUS FOR PREPARING FAKE INSERT - Google Patents

PROCEDURE AND APPARATUS FOR PREPARING FAKE INSERT

Info

Publication number
DK671488D0
DK671488D0 DK671488A DK671488A DK671488D0 DK 671488 D0 DK671488 D0 DK 671488D0 DK 671488 A DK671488 A DK 671488A DK 671488 A DK671488 A DK 671488A DK 671488 D0 DK671488 D0 DK 671488D0
Authority
DK
Denmark
Prior art keywords
seamed
pipe profile
section
pipe
seamed connection
Prior art date
Application number
DK671488A
Other languages
Danish (da)
Other versions
DK671488A (en
DK169907B1 (en
Inventor
Peter Emmerich
Hans Marx
Original Assignee
Rheinzink Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rheinzink Gmbh filed Critical Rheinzink Gmbh
Publication of DK671488D0 publication Critical patent/DK671488D0/en
Publication of DK671488A publication Critical patent/DK671488A/en
Application granted granted Critical
Publication of DK169907B1 publication Critical patent/DK169907B1/en

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

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.
DK671488A 1987-12-02 1988-12-01 Method and apparatus for making folded, insertable downpipes DK169907B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873740750 DE3740750A1 (en) 1987-12-02 1987-12-02 METHOD AND DEVICE FOR PRODUCING RAINFALL PIPES
DE3740750 1987-12-02

Publications (3)

Publication Number Publication Date
DK671488D0 true DK671488D0 (en) 1988-12-01
DK671488A 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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE3850225D1 (en) 1994-07-21
EP0318905B1 (en) 1994-06-15
DK671488A (en) 1989-06-03
DE3740750A1 (en) 1989-06-15
EP0318905A3 (en) 1990-09-19
EP0318905A2 (en) 1989-06-07
ATE107203T1 (en) 1994-07-15
DK169907B1 (en) 1995-04-03

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed