IE33977B1 - Improved helically wound tubing - Google Patents

Improved helically wound tubing

Info

Publication number
IE33977B1
IE33977B1 IE1413/69A IE141369A IE33977B1 IE 33977 B1 IE33977 B1 IE 33977B1 IE 1413/69 A IE1413/69 A IE 1413/69A IE 141369 A IE141369 A IE 141369A IE 33977 B1 IE33977 B1 IE 33977B1
Authority
IE
Ireland
Prior art keywords
strip
rolls
channel
mandrel
ribs
Prior art date
Application number
IE1413/69A
Other versions
IE33977L (en
Original Assignee
Bowater Building Prod Ltd
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
Priority claimed from AU44936/68A external-priority patent/AU417205B2/en
Application filed by Bowater Building Prod Ltd filed Critical Bowater Building Prod Ltd
Publication of IE33977L publication Critical patent/IE33977L/en
Publication of IE33977B1 publication Critical patent/IE33977B1/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
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/156—Making tubes with wall irregularities
    • B21C37/157—Perforations
    • 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal
    • F16L9/06—Corrugated pipes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

1,237,325. Making tubing; coiling; seaming; perforating. BOWATER FLEXPIPE Ltd. 13 Oct., 1969 [17 Oct., 1968; 12 May, 1969], No. 50122/69. Headings B3A, B3E and B3J. [Also in Division F2] A method for the manufacture of helically wound metal tubes comprises longitudinally corrugating aluminium strip 1, see Fig. 1, by rolls (not shown), after which ribs 2 and 3, Fig. 4, are formed by rolls 4, the ribs 2 and 3 being deepened by rolls 5, 6 and 7. The edge margins of the strip are then turned down to form a channel element 11, see Fig. 6, and a flange element 12 having convexities 10. The strip is perforated by passing it between a spiked roll 37, see Fig. 16, and a backing roll 36 which can be moved towards or away from each other by operating a ram 43 which pivots a bracket 39 about a pivot 41. As the strip is fed to a forming head 17 it passes between rolls 21 and 22, see Fig. 8, and is coiled about a mandrel 18 with the flange 12 lying in the channel 11. The strip then passes between rolls 23 and 20 which deform the ribs 2 and 3 inwardly to partly close the mouth of the channel 11. As the partly formed seam continues around the mandrel it again passes rolls 21 and 22 which crush the seam flat. In a second embodiment, Fig. 13, a driven, grooved forming roll 23a provided with a V- groove 30 inwardly deforms the ribs 2 and 3 and the partly formed seam is flattened by a roll 31 placed at the end of the mandrel. In a third embodiment the strip has an L- shaped flange 51, Fig. 18, formed on one edge and a U-shaped channel 52 formed on the other edge, the channel 52 having its open mouth directed inwardly of the formed tube. The flange 51 is mated with the channel 52 and as the strip passes around the mandrel, it passes between rolls which nip-in the base of the channel to partially close its mouth as shown at A in Fig. 18. As the seam passes further around the mandrel it is finally flattened by the rolls 21, 22. In a fourth embodiment one edge of the strip has a pair of ribs formed on it which are outwardly directed with respect to the tube (Fig. 19, not shown), and the other edge has a pair of channels formed with their mouths facing inwardly with respect to the tube. As the strip is convoluted about the mandrel, the ribs are first mated with the channels after which the channels are spread apart and finally they are flattened down to form the locked seam. [GB1237325A]
IE1413/69A 1968-10-17 1969-10-14 Improved helically wound tubing IE33977B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU44936/68A AU417205B2 (en) 1968-10-17 1968-10-17 Improved helically wound tubing
AU5486369 1969-05-12

Publications (2)

Publication Number Publication Date
IE33977L IE33977L (en) 1970-04-17
IE33977B1 true IE33977B1 (en) 1974-12-30

Family

ID=25626989

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1413/69A IE33977B1 (en) 1968-10-17 1969-10-14 Improved helically wound tubing

Country Status (8)

Country Link
JP (1) JPS4925828B1 (en)
CA (2) CA918085A (en)
FR (1) FR2020909B1 (en)
GB (1) GB1237325A (en)
IE (1) IE33977B1 (en)
IL (1) IL33181A (en)
NL (1) NL6915752A (en)
SE (1) SE374677B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012625A (en) * 1975-09-05 1977-03-15 Honeywell Information Systems, Inc. Non-logic printed wiring board test system
DE3540125C3 (en) * 1985-11-13 1997-05-07 Hahn Fritz Gmbh Co Kg Method and device for producing a corrugated tube by helically winding a corrugated, thin strip, preferably a steel strip
GB0106819D0 (en) 2001-03-20 2001-05-09 Weatherford Lamb Tube manufacture

Also Published As

Publication number Publication date
SE374677B (en) 1975-03-17
CA927212A (en) 1973-05-29
JPS4925828B1 (en) 1974-07-03
FR2020909A1 (en) 1970-07-17
NL6915752A (en) 1970-04-21
CA918085A (en) 1973-01-02
IE33977L (en) 1970-04-17
GB1237325A (en) 1971-06-30
FR2020909B1 (en) 1977-01-21
IL33181A0 (en) 1969-12-31
IL33181A (en) 1974-09-10

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