WO1981002120A1 - Device for straightening of pipes - Google Patents

Device for straightening of pipes Download PDF

Info

Publication number
WO1981002120A1
WO1981002120A1 PCT/DK1981/000005 DK8100005W WO8102120A1 WO 1981002120 A1 WO1981002120 A1 WO 1981002120A1 DK 8100005 W DK8100005 W DK 8100005W WO 8102120 A1 WO8102120 A1 WO 8102120A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
base
corner
bending
bars
Prior art date
Application number
PCT/DK1981/000005
Other languages
French (fr)
Inventor
T Andersen
Original Assignee
T Andersen
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 T Andersen filed Critical T Andersen
Priority to DE8181900457T priority Critical patent/DE3166745D1/en
Priority to DE19813134460 priority patent/DE3134460A1/en
Publication of WO1981002120A1 publication Critical patent/WO1981002120A1/en

Links

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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/10—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments

Definitions

  • the invention relates to a device for straightening of pipes, especially for straightening of bent, tubular road sign posts.
  • a device By straightening of bent pipes a device is used that comprises two bases placed on each side of the bending on its outside. This device can not be used for straightening of bent road sign posts, where the bending is near the surface of the earth.
  • the purpose of this invention is to present a device to meet this disadvantage.
  • the device comprises a base in two parts to span the bent pipe on one side of its bending, which base is connected to one end of at least one bar. the other end of which is pivotally fastened to a piston rod in a working cylinder, which is pivotally fastened to a corner of a triangular straightener, another corner being pivotally fastened to one part of the base, and the side opposite this corner being the basis for a thrust block or roller arranged in a way that allows this to press against the other sice of the bending of the pipe.
  • the device can be easily placed on a pipe that is to be straightened.
  • the base is placed immediately under the bending, and thus benilngs close to the earth can be straightened.
  • the divice can be characterized in that the bars are pivotally fastened to each its on opposite sides of the pipe gripping tight-fitting thrust pad of the base, and that the bars are connected to the piston rod in the sar.e point, the lengths of the bars being fitted to allowing the thrust pads to squeeze the pipe, as the bars for- an acute angle to each other.
  • This embodiment is especially appropriate, as the base in two parts automatically tightens round the pipe when activating the working cylinder of the device.
  • the device can be characterized in that the thrust block or roller can be fastened to the side of the triangular straightener that is opposite the corner where the triangular straightener is connected to the base at different distances from the third corner of the triangular straightener.
  • the device consists of a triangular straightener 7, 14,15, to the lower corner 6 of which a thrust pad 3 is pivotally fastened to fit tightly against a pipe 1 at the inside of the bending.
  • a pneumatic or hydraulic working cylinder 9 is pivotally fastened, the piston rod 10 of which is pivotally fastened to two sets of bars 11 and 12.
  • One set of bars 11 are at the other end fastened pivotally to the corner 6 and the base 3.
  • another thrust pad 2 is mounted, pivotally too, at the other end 14 to fit tightly against the pipe 1 at the outside of the bending.
  • thrust roller 5 is mounted on one side 7 of the triangular straightener. This thrust roller 5 can be moved between several positions 13 at different distances from the corner 4.
  • the device functions in the following way.
  • the base 2, 3 in two parts is placed round the pipe 1 immediately below the bending so that the thrust roller 5 abuts the pipe 1 above and at the inside of the bending.
  • the thrust pads 2 and 3 are pressed firmly round the oioe 1, whereuoon the triangular ner turns about the corner 6 , the thrust roller 5 transmitting the straightening power from the working cylinder 9 to the pipe, which is then straightened, as the necessary reaction against the pipe 1 is transmitted through the thrust pad 2.

Abstract

By straightening of bent pipes a device with two bases is used, which bases are placed on one side of the pipe on each side of the bending, a third base being placed on the bending on the other side of the pipe, i.e. on the outside of the bending. In order to straighten road sign posts that are bent at the surface of the earth a device is used that comprises a base (2, 3) in two parts spanning the bent pipe (1) on one side of the bending of the pipe (1), which base (2, 3) is connected to one end of a bar (11), which is pivotally fastened at the other end to a piston rod (10) in a working cylinder (9). The working cylinder (9) is pivotally fastened to a corner (8) of a triangular straightener (7, 14, 15) another corner (6) being pivotally fastened to one part of the base (3), and the side (7) opposite this corner (6) bearing a thrust block or roller (5), which presses against the other side of the bending of the pipe (1).

Description

DEVICE FOR STRAIGHTENING OF PIPES.
The invention relates to a device for straightening of pipes, especially for straightening of bent, tubular road sign posts.
By straightening of bent pipes a device is used that comprises two bases placed on each side of the bending on its outside. This device can not be used for straightening of bent road sign posts, where the bending is near the surface of the earth.
The purpose of this invention is to present a device to meet this disadvantage.
This is achieved when the device comprises a base in two parts to span the bent pipe on one side of its bending, which base is connected to one end of at least one bar. the other end of which is pivotally fastened to a piston rod in a working cylinder, which is pivotally fastened to a corner of a triangular straightener, another corner being pivotally fastened to one part of the base, and the side opposite this corner being the basis for a thrust block or roller arranged in a way that allows this to press against the other sice of the bending of the pipe. Thus the device can be easily placed on a pipe that is to be straightened. The base is placed immediately under the bending, and thus benilngs close to the earth can be straightened.
According to claim 2 the divice can be characterized in that the bars are pivotally fastened to each its on opposite sides of the pipe gripping tight-fitting thrust pad of the base, and that the bars are connected to the piston rod in the sar.e point, the lengths of the bars being fitted to allowing the thrust pads to squeeze the pipe, as the bars for- an acute angle to each other. This embodiment is especially appropriate, as the base in two parts automatically tightens round the pipe when activating the working cylinder of the device.
Finally, according to claim 3, the device can be characterized in that the thrust block or roller can be fastened to the side of the triangular straightener that is opposite the corner where the triangular straightener is connected to the base at different distances from the third corner of the triangular straightener. By means of this heavily bent pipes can be straightened, even if a working cylinder with a limited length of .stroke is used.
The invention will be further explained with reference to the drawing, showing an embodiment according to the invention, seen from the side.
The device consists of a triangular straightener 7, 14,15, to the lower corner 6 of which a thrust pad 3 is pivotally fastened to fit tightly against a pipe 1 at the inside of the bending. At the other corner 8 a pneumatic or hydraulic working cylinder 9 is pivotally fastened, the piston rod 10 of which is pivotally fastened to two sets of bars 11 and 12. One set of bars 11 are at the other end fastened pivotally to the corner 6 and the base 3. To the other set 12 another thrust pad 2 is mounted, pivotally too, at the other end 14 to fit tightly against the pipe 1 at the outside of the bending. Finally thrust roller 5 is mounted on one side 7 of the triangular straightener. This thrust roller 5 can be moved between several positions 13 at different distances from the corner 4.
The device functions in the following way. The base 2, 3 in two parts is placed round the pipe 1 immediately below the bending so that the thrust roller 5 abuts the pipe 1 above and at the inside of the bending. When activating the working cylinder 9 the thrust pads 2 and 3 are pressed firmly round the oioe 1, whereuoon the triangular ner turns about the corner 6 , the thrust roller 5 transmitting the straightening power from the working cylinder 9 to the pipe, which is then straightened, as the necessary reaction against the pipe 1 is transmitted through the thrust pad 2.

Claims

C L A I M S
1. Device for straightening of e.g. bent, tubular road sign posts, c h a r a c t e r i z e d i n that the device comprises a base (2, 3). in two parts to span the bent pipe (1) on one side of its bending, which base (2, 3) is connected to one end of at least one bar (11), the other end of which is pivotally fastened to a piston rod (10) in a working cylinder (9), which is pivotally fastened to a corner (8) of a triangular straightener (7, 14, 15), another corner (6) being pivotally fastened to one part of the base (3), and the side (7) opposite this corner (6) bearing a thrust block or roller (5) arranged in a way that allows this to press against the other side of the bending of the pipe (1).
2. Device for straightening of pipes according to claim
1, and where two bars are placed on the base, c h a r a ct e r i z e d i n that the bars (11, 12) are pivotally fastened to each its on opposite sides of the pipe gripping tight-fitting thrust pad (2, 3) of the base, and that the bars (11, 12) are connected to the piston rod (10) in the same point (8), the lengths of the bars (11, 12) being fitted to allowing the thrust pads (2, 3) to squeeze the pipe (1), as the bars (11, 12) form an acute angle to each other.
3. Device according to claim 1 og 2, c h a r a c t e r i z e d i n that the thrust block or roller (5) can be fastened to the side (7) of the triangular straightener (7, 14, 15) that is opposite the corner (6) where the triangular straightener (7, 14, 15) is connected to the bas (3) at different distances from the third corner (4) of the triangular straightener (7, 14, 15).
PCT/DK1981/000005 1980-01-21 1981-01-15 Device for straightening of pipes WO1981002120A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8181900457T DE3166745D1 (en) 1980-01-21 1981-01-15 Device for straightening of pipes
DE19813134460 DE3134460A1 (en) 1980-01-21 1981-01-15 DEVICE FOR STRAIGHTENING OF PIPES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK232/80 1980-01-21
DK23280A DK23280A (en) 1980-01-21 1980-01-21 CANE COURSES

Publications (1)

Publication Number Publication Date
WO1981002120A1 true WO1981002120A1 (en) 1981-08-06

Family

ID=8091218

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1981/000005 WO1981002120A1 (en) 1980-01-21 1981-01-15 Device for straightening of pipes

Country Status (11)

Country Link
US (1) US4404833A (en)
EP (1) EP0043841B1 (en)
JP (1) JPS57500007A (en)
AT (1) ATE9968T1 (en)
AU (1) AU544139B2 (en)
BE (1) BE887143A (en)
DK (1) DK23280A (en)
GB (1) GB2079651B (en)
IT (1) IT1210654B (en)
NO (1) NO813154L (en)
WO (1) WO1981002120A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1024327A (en) * 1996-07-10 1998-01-27 Opton Co Ltd Bending device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243449B (en) * 1960-02-08 1967-06-29 Lely Nv C Van Der Device for mounting an agricultural device in front of a tractor
US3353393A (en) * 1963-01-14 1967-11-21 Maurice W Goodwill Modular roof construction unit and method of making same
US3584493A (en) * 1968-10-10 1971-06-15 Silas Ray Crees Wire bending apparatus
US3592038A (en) * 1967-07-11 1971-07-13 Leo Larikka Tool and/or machine tool to work a hole and its flange into a wall for a branch pipe to be attached to the wall
US3765219A (en) * 1972-01-03 1973-10-16 W Easom Wheel alignment device
US3844149A (en) * 1972-12-04 1974-10-29 Dako Werkzeugfab Kotthaus D Kg Pipe necking apparatus
US3861186A (en) * 1973-09-14 1975-01-21 Jr David H Wigner Portable bending apparatus
FI50843B (en) * 1973-06-28 1976-04-30 Leo Larikka

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1268844A (en) * 1917-07-26 1918-06-11 Kellogg M W Co Pipe-bending machine.
US3786668A (en) * 1972-08-18 1974-01-22 S Crees Cable bending apparatus
US4026138A (en) * 1976-07-12 1977-05-31 Applied Power Inc. Cable bender

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243449B (en) * 1960-02-08 1967-06-29 Lely Nv C Van Der Device for mounting an agricultural device in front of a tractor
US3353393A (en) * 1963-01-14 1967-11-21 Maurice W Goodwill Modular roof construction unit and method of making same
US3592038A (en) * 1967-07-11 1971-07-13 Leo Larikka Tool and/or machine tool to work a hole and its flange into a wall for a branch pipe to be attached to the wall
US3584493A (en) * 1968-10-10 1971-06-15 Silas Ray Crees Wire bending apparatus
US3765219A (en) * 1972-01-03 1973-10-16 W Easom Wheel alignment device
US3844149A (en) * 1972-12-04 1974-10-29 Dako Werkzeugfab Kotthaus D Kg Pipe necking apparatus
FI50843B (en) * 1973-06-28 1976-04-30 Leo Larikka
US3861186A (en) * 1973-09-14 1975-01-21 Jr David H Wigner Portable bending apparatus

Also Published As

Publication number Publication date
NO813154L (en) 1981-09-16
GB2079651B (en) 1983-07-06
JPS57500007A (en) 1982-01-07
US4404833A (en) 1983-09-20
GB2079651A (en) 1982-01-27
AU544139B2 (en) 1985-05-16
EP0043841B1 (en) 1984-10-24
ATE9968T1 (en) 1984-11-15
BE887143A (en) 1981-05-14
IT1210654B (en) 1989-09-20
IT8112414A0 (en) 1981-01-20
DK23280A (en) 1981-07-22
EP0043841A1 (en) 1982-01-20
AU6774681A (en) 1981-08-17

Similar Documents

Publication Publication Date Title
WO1981002120A1 (en) Device for straightening of pipes
EP0800884A3 (en) Workpiece clamping device
US3584493A (en) Wire bending apparatus
US2792046A (en) Method of forming objects and apparatus therefor
CN2117957U (en) Portable tube bending machine
GB1352358A (en) Apparatus for acting on and reshaping the damaged bodywork of automotive vehicles
FR2407164A1 (en) APPARATUS FOR LIFTING A LOAD
KR930005339Y1 (en) Bending machine for pipe
RU1784572C (en) Jack
US2534429A (en) Pipe bending machine
ATE12899T1 (en) HOLDING DEVICE FOR THE PIPE END PIECES IN A HYDRAULIC PIPE END PRESS.
FR2358218A1 (en) HYDRAULIC DISCHARGE PRESS FOR TUBE ENDS
FR2331392A1 (en) Bending press for heavy section steel plates - has former connected to pivot arm located by pin on bracket
US4048837A (en) Choker straightener
EP1034917A3 (en) Press with locking device for press ram
KR910005935A (en) Press brake system with sheet straightener
GB1377015A (en) Tube bending device
Dorner Tube Manufacturing Device
EP0183531A3 (en) Portable bending apparatus
US2659410A (en) Electrical conduit bending and straightening device
FR2293997A1 (en) Activating device for impaling tubes onto mandrel of bending machine - has hydraulically operated interconnected gripping jaws and pivoting linkage system (OE150176)
DE29724354U1 (en) Device for pulling a pipe tour
GB1250049A (en) Forming an elongated member
JPS5641023A (en) Reinforcing steel working device
GB932922A (en) Frame bending machine

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): AT AU CH DE GB JP NL NO SE US

AL Designated countries for regional patents

Designated state(s): AT CH DE FR GB NL SE

WWE Wipo information: entry into national phase

Ref document number: 1981900457

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1981900457

Country of ref document: EP

RET De translation (de og part 6b)

Ref document number: 3134460

Country of ref document: DE

Date of ref document: 19820429

WWE Wipo information: entry into national phase

Ref document number: 3134460

Country of ref document: DE

WWG Wipo information: grant in national office

Ref document number: 1981900457

Country of ref document: EP