US3374652A - Tube shaping apparatuses - Google Patents

Tube shaping apparatuses Download PDF

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Publication number
US3374652A
US3374652A US496274A US49627465A US3374652A US 3374652 A US3374652 A US 3374652A US 496274 A US496274 A US 496274A US 49627465 A US49627465 A US 49627465A US 3374652 A US3374652 A US 3374652A
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US
United States
Prior art keywords
section
rollers
mandrel
cross
tube
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
Application number
US496274A
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English (en)
Inventor
Hjalmarsson John Edvin
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3374652A publication Critical patent/US3374652A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21C37/155—Making tubes with non circular section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D15/00—Corrugating tubes
    • B21D15/02—Corrugating tubes longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2646—Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged

Definitions

  • This invention relates to an apparatus for shaping tubes of round cross section, preferably metal tubes for e.g. ventilating systems, into tubes of angular, rectangular or other non-circular cross section and substantially planar side surfaces.
  • Tubes of angular cross section are preferred for ventilating and like systems because such tubes take up less space than do tubes of round, i.e. circular or oval cross section. It has proved very diflicult, however, to realize an economical production of tubes of angular cross section, and so one has turned to the expedient of shaping tubes of round cross section into tubes of angular cross section, which is an economical and advantageous procedure.
  • the apparatuses which have been suggested hitherto, however, are extremely complicated and very costly.
  • the present invention has for its object to provide a simple and inexpensive apparatus of the type outlined above, wherein the tube of round cross section is passed onto a mandrel and wherein in each corner of the angular cross section the mandrel has rotatably mounted thereon edge-producing rollers, and in the proximity of and substantially between said edge-producing rollers on the mandrel further rollers are rotatably mounted around the mandrel for shaping the side surfaces of the angular cross section, said further rollers having their axes extending in parallel with the side surfaces of the angular cross section.
  • FIG. 1 is an end view of the shaping apparatus according to the invention.
  • FIG. 2 is a section on line II in FIG. 1;
  • FIG. 3 is a section on line 11-11 in FIG. 1.
  • the apparatus illustrated in FIG. 1 comprises two spaced apart sets of edge-producing means in the form of rollers 12 which taper towards their periphery and are mounted for rotation on a mandrel 10.
  • the mandrel presents a leading portion which is mounted on a stem 14 and on which the rollers are mounted for rotation in pairs by means of supports 16 (FIG. 3) which are adjustable with respect to the leading portion of the mandrel and extend longitudinally of said portion.
  • the two rollers in each support 16 constitute a pair and are thus aligned.
  • each pair of the edgeproducing rollers 12 is located in one corner of the angular cross section to be imparted to a tube of round cross section.
  • each pair of edge-producing rollers is mounted for rotation at one end of the diagonals of the angular cross section; in the present instance the diagonals of a square.
  • the diagonal distance between the rollers 12 of the first set which is situated at the apex of the leading portion of the mandrel 10
  • the diagonal distance between the rollers of the second set which is spaced from the first set.
  • the diagonal distance between the outer peripheries of the rollers in the second set is as large as the length of the diagonal in the square cross section.
  • Said means may be, for instance, curved rollers 18 which are mounted for rotation in a frame 20 surrounding the mandrel 10. It is also conceivable to substitute stationary means for the rollers, in which case the stationary means should be curved on the side facing the rollers corresponding to the curvature ofthe rollers 18.
  • the frame 20 can be secured in any conventional manner in relation to the second set of edge-producing rollers.
  • the rollers 18 extend along the sides of the square cross section and are slightly longer than the side of the square. The curvature of the rollers serves to overcome the resistance offered by the tube material to the shaping operation.
  • the tube walls will thus be shaped between the edge-producing rollers and the tube side wall shaping rollers when the tube is passed onto the mandrel.
  • a device for example a carriage with clamp ing means, may grasp the tube and pull it past the two sets of edge-producing rollers.
  • the device pulling the tube will guide it and thus prevent it from turning during the shaping operation.
  • the present invention thus makes it possible to shape a tube, preferably a metal tube of round cross section with the use of an extremely simple device into a tube of optionally angular cross section, e.g. square cross section, as mentioned above, or any polygonal cross section whatever.
  • edge-producing rollers in the set adjacent the rollers shaping the sides of the angular cross section taper towards their peripheries, while the edge-producing rollers V a 3374;652 a i Y 3 4 in the second set or the other sets have a more rounded References Cited shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US496274A 1964-10-21 1965-10-15 Tube shaping apparatuses Expired - Lifetime US3374652A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1264764 1964-10-21

Publications (1)

Publication Number Publication Date
US3374652A true US3374652A (en) 1968-03-26

Family

ID=20296080

Family Applications (1)

Application Number Title Priority Date Filing Date
US496274A Expired - Lifetime US3374652A (en) 1964-10-21 1965-10-15 Tube shaping apparatuses

Country Status (7)

Country Link
US (1) US3374652A (de)
AT (1) AT255877B (de)
BE (1) BE671090A (de)
CH (1) CH441201A (de)
DE (1) DE1267647B (de)
GB (1) GB1071378A (de)
NL (1) NL6513628A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9126257B2 (en) * 2011-04-04 2015-09-08 Batesville Services, Inc. Method of forming sheet metal casket shell

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE310641B (de) * 1967-06-06 1969-05-12 Asea Ab
DE3218100A1 (de) * 1982-05-13 1983-11-17 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Verfahren zur herstellung einer rohrkokille mit rechteckigem bzw. quadratischem querschnitt
EP0589099A1 (de) * 1992-09-24 1994-03-30 MANNESMANN Aktiengesellschaft Verfahren zum Umformen von runden Rohren in Profilrohre mit polygonalen oder anderen von der Kreisform abweichenden Querschnitten

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931416A (en) * 1958-05-20 1960-04-05 Krise Otis Milk case straightener
US3262304A (en) * 1966-07-26 Case straightener

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1019968A (en) * 1910-07-27 1912-03-12 Phenix Tube Company Tube-forming mechanism.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262304A (en) * 1966-07-26 Case straightener
US2931416A (en) * 1958-05-20 1960-04-05 Krise Otis Milk case straightener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9126257B2 (en) * 2011-04-04 2015-09-08 Batesville Services, Inc. Method of forming sheet metal casket shell

Also Published As

Publication number Publication date
BE671090A (de) 1966-02-14
GB1071378A (en) 1967-06-07
AT255877B (de) 1967-07-25
NL6513628A (de) 1966-04-22
CH441201A (de) 1967-08-15
DE1267647B (de) 1968-05-09

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