GB1383364A - Apparatus and method for bending elongated objects - Google Patents
Apparatus and method for bending elongated objectsInfo
- Publication number
- GB1383364A GB1383364A GB1030372A GB1030372A GB1383364A GB 1383364 A GB1383364 A GB 1383364A GB 1030372 A GB1030372 A GB 1030372A GB 1030372 A GB1030372 A GB 1030372A GB 1383364 A GB1383364 A GB 1383364A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- plane
- zone
- downstream
- bending
- 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
Links
- 238000005452 bending Methods 0.000 title abstract 5
- 238000000034 method Methods 0.000 title 1
- 238000010438 heat treatment Methods 0.000 abstract 3
- 238000011144 upstream manufacturing Methods 0.000 abstract 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
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
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
- B21D7/025—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and pulling or pushing the ends of the work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Confectionery (AREA)
Abstract
1383364 Bending tubes COJAFEX NV 6 March 1972 [5 March 1971] 10303/72 Heading B5A [Also in Divisions B3 and C1] The cross-section of a plastics tube or other elongated member is controlled during bending by heating a narrow transverse zone of the tube while applying a bending moment, the zone lying at least in part in plane which does not pass through the centre of curvature of the arc into which the member is to be bent. Fig. 4, shows a tube being bent by an arm (not shown), pivoting about axis 1, the heated zone being inclined to the plane 4 transverse to the tube and passing through axis 1, so that the heated zone is downstream of plane 4 on the inside of the bend at 2e, and upstream on the outside of the bend at 2d. The tube may be cooled downstream of the heater, which may be adjustable. It is stated that displacement of the tube wall during bending may be compensated for or even over-compensated. The heated zone may be parallel to plane 4, but upstream (Fig. 2), or downstream (Fig. 3), of it, or may be in part in plane 4 and in part inclined to it (Fig. 5). The position of the heater may be adjustable, and may be adjusted automatically in response to the sensed ovality of the tube. Heating may be effected by induction heating or other radiation, or convection.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7103010A NL7103010A (en) | 1971-03-05 | 1971-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1383364A true GB1383364A (en) | 1974-02-12 |
Family
ID=19812630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1030372A Expired GB1383364A (en) | 1971-03-05 | 1972-03-06 | Apparatus and method for bending elongated objects |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE780274A (en) |
| DE (1) | DE2210715A1 (en) |
| FR (1) | FR2128665B1 (en) |
| GB (1) | GB1383364A (en) |
| IT (1) | IT952092B (en) |
| NL (1) | NL7103010A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596128A (en) * | 1984-07-26 | 1986-06-24 | Cojafex Bv | Method and apparatus for bending elongate workpieces, particularly pipes |
| GB2249750A (en) * | 1990-11-13 | 1992-05-20 | Mckechnie Plastics Ltd | Improved method and apparatus for shaping thermoplastic tubes |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL168729C (en) * | 1975-03-24 | 1982-05-17 | Mannesmann Roehren Werke Ag | TUBE BENDING DEVICE. |
| NL165667C (en) * | 1976-09-03 | 1981-05-15 | Cojafex | METHOD AND APPARATUS FOR CONTINUOUSLY BENDING OF LONG-LIKE OBJECTS SUCH AS TUBES. |
| SE7805811L (en) * | 1977-05-31 | 1978-12-01 | Prvni Brnenska Strojirna | DEVICE FOR BOOKING OF TUBES |
| FR2497697A2 (en) * | 1981-01-14 | 1982-07-16 | Stein Industrie | Elongated metallic element bending process - detects heated zone temp. or clearance between element and heater for adjustment from comparison with reference value |
| FR2488162B1 (en) * | 1980-08-05 | 1986-03-21 | Stein Industrie | METHOD AND DEVICE FOR BENDING AN ELONGATED METAL MEMBER |
| DE3173625D1 (en) * | 1980-08-05 | 1986-03-13 | Stein Industrie | Method and apparatus for bending a long metal object |
| FR2497696A2 (en) * | 1981-01-13 | 1982-07-16 | Stein Industrie | Method of bending metal tubes - entails stressing tube via traversing heating collar using equal cooling flows over and under zone leaving collar |
| DE3333911A1 (en) * | 1983-09-20 | 1985-03-28 | August Wilhelm 5901 Wilnsdorf Schäfer | DEVICE FOR BENDING TUBES OR THE LIKE |
| DE3333912A1 (en) * | 1983-09-20 | 1985-03-28 | August Wilhelm 5901 Wilnsdorf Schäfer | DEVICE FOR BENDING TUBES ODG. |
-
1971
- 1971-03-05 NL NL7103010A patent/NL7103010A/xx unknown
-
1972
- 1972-03-03 IT IT4873772A patent/IT952092B/en active
- 1972-03-06 BE BE780274A patent/BE780274A/en not_active IP Right Cessation
- 1972-03-06 FR FR7207705A patent/FR2128665B1/fr not_active Expired
- 1972-03-06 DE DE19722210715 patent/DE2210715A1/en active Pending
- 1972-03-06 GB GB1030372A patent/GB1383364A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596128A (en) * | 1984-07-26 | 1986-06-24 | Cojafex Bv | Method and apparatus for bending elongate workpieces, particularly pipes |
| GB2249750A (en) * | 1990-11-13 | 1992-05-20 | Mckechnie Plastics Ltd | Improved method and apparatus for shaping thermoplastic tubes |
| US5200124A (en) * | 1990-11-13 | 1993-04-06 | Mckechnie Plastics Limited | Method and apparatus for shaping thermoplastic tubes |
| GB2249750B (en) * | 1990-11-13 | 1994-09-07 | Mckechnie Plastics Ltd | Improved method and apparatus for shaping thermoplastic tubes |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2128665B1 (en) | 1978-02-10 |
| FR2128665A1 (en) | 1972-10-20 |
| NL7103010A (en) | 1972-09-07 |
| BE780274A (en) | 1972-07-03 |
| IT952092B (en) | 1973-07-20 |
| DE2210715A1 (en) | 1972-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed |