US3740995A - Method for bending a gutter or equivalent into a curve - Google Patents

Method for bending a gutter or equivalent into a curve Download PDF

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Publication number
US3740995A
US3740995A US00158507A US3740995DA US3740995A US 3740995 A US3740995 A US 3740995A US 00158507 A US00158507 A US 00158507A US 3740995D A US3740995D A US 3740995DA US 3740995 A US3740995 A US 3740995A
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US
United States
Prior art keywords
article
bent
die elements
bending
gutter
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
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US00158507A
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English (en)
Inventor
H Fredriksson
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
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Publication of US3740995A publication Critical patent/US3740995A/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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • B21D7/085—Bending rods, profiles, or tubes by passing between rollers or through a curved die by passing through a curved die

Definitions

  • a continuous curve can be produced which has a smooth inner surface. This is accomplished in that of the object to be bent, a small portion at a time is bent so that a continuous curve is formed, with this bending taking place in bending elements which have been shaped in accordance with the bending radius and the transverse section of the object to be bent, at which operation also the edges of the object are subjected to a pressure depending on the dimensioning of the gutter.
  • the invention further relates to a device comprising forming jaws, the forming surfaces of which have been shaped in accordance with the bending radius and the transverse cross section of the object to be bent, and retention jaws.
  • the device is further characterized in that the forming elements can be displaced along the object to be bent or that the device has been provided with an element displacing the object through an appropriate distance, whereby a continuous gutter curve is obtained.
  • a socalled outer-bend gutter or inner-bend gutter is obtained.
  • a pipe is obtained which has a smooth pipe curve and in which the joining seams are located on the sides.
  • F IG. 1 is a view partly in elevation and partly in section of a device in which the bottom of the gutter forms the inner bend of the curve
  • FIG. 3 is a view taken along the line III-III in FIG. 2, the view looking in the direction of the arrows.
  • the anvil body 2a and pressing body 3a defining forming elements bend a gutter 1 into a curve, in which the bottom of the gutter forms the inner bend of the curve.
  • Retaining means such as jaws 4a, 5a press the gutter at the forming phase, in order to preclude malformations.
  • an element 6 moves the gutter 1 forward through the distance that has been bent or through a fraction thereof, whereby a new, unbent portion of the gutter is positioned at the forming elements 2a, 3a. This operation continues until the desired length of curve has been produced.
  • FIG. 2 shows an embodiment in which the bottom of the gutter forms the outer bend.
  • FIG. 3 shows the shape of the forming elements in cross section. It is thus understood that the pressing element 3b has been shaped so that also the edges of the gutter are subjected to a pressing force from above.
  • a method for bending a gutter and like article of sheet metal a small portion at a time comprising the steps of placing together die elements defining therebetween a space substantially equal to the thickness of the sheet metal introduced therein, the space having longitudinal and transverse cross sections corresponding to the bending radius and the cross section of the article to be bent, and supporting the unbent portion ofthe article from inside and outside by retaining means immediately before the die elements while subjecting the edge surfaces of the article to be bent by pressure exerted by the die elements.
  • a device for bending a gutter and like article of sheet metal a small portion at a time comprising cooperating die elements, said die elements having surfaces corresponding to the bending radius and cross section of the article to be bent when positioned in operative relationship, the surface of the die element supporting the inside surface of the article being provided with projecting parts pressing against the side surfaces of the article to be bent, the projecting parts having a width corresponding to the thickness of the sheet metal to be bent, and retaining means located immediately before the cooperating die elements, the retaining means being provided with supporting surfaces corresponding to the unbent profile of the article.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US00158507A 1970-06-30 1971-06-30 Method for bending a gutter or equivalent into a curve Expired - Lifetime US3740995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI701839A FI46593C (fi) 1970-06-30 1970-06-30 Menetelmä ja laite metallilevystä tai vastaavasta tehdyn kourun tai va staavan kourumaisen profiilikappaleen taivuttamiseksi käyrälle.

Publications (1)

Publication Number Publication Date
US3740995A true US3740995A (en) 1973-06-26

Family

ID=8506269

Family Applications (1)

Application Number Title Priority Date Filing Date
US00158507A Expired - Lifetime US3740995A (en) 1970-06-30 1971-06-30 Method for bending a gutter or equivalent into a curve

Country Status (7)

Country Link
US (1) US3740995A (enExample)
CA (1) CA952004A (enExample)
DE (1) DE2132076A1 (enExample)
FI (1) FI46593C (enExample)
FR (1) FR2096617B3 (enExample)
GB (1) GB1360065A (enExample)
SE (1) SE389040B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136773A (en) * 1988-11-08 1992-08-11 Francois Mesnel Method of forming a shaped section for guiding and sealing a movable window

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136773A (en) * 1988-11-08 1992-08-11 Francois Mesnel Method of forming a shaped section for guiding and sealing a movable window

Also Published As

Publication number Publication date
DE2132076A1 (de) 1972-01-05
FI46593B (enExample) 1973-01-31
SE389040B (sv) 1976-10-25
FR2096617A3 (enExample) 1972-02-18
GB1360065A (en) 1974-07-17
FR2096617B3 (enExample) 1974-04-05
CA952004A (en) 1974-07-30
FI46593C (fi) 1973-05-08

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