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Publication numberDE2513993 A1
Publication typeApplication
Application numberDE19752513993
Publication date21 Oct 1976
Filing date29 Mar 1975
Priority date29 Mar 1975
Also published asDE2513993C2
Publication number19752513993, 752513993, DE 2513993 A1, DE 2513993A1, DE-A1-2513993, DE19752513993, DE2513993 A1, DE2513993A1, DE752513993
InventorsWladimir Nikolaewitsch Schubin
ApplicantSchubin
Export CitationBiBTeX, EndNote, RefMan
External Links: DPMA, Espacenet
Thin wall pipe bending machine - has pipe held between rollers of twin frames pulled together by springs
DE 2513993 A1
Abstract
The feed mechanism and the pipe bending head (2) are ariven from one source. The feed has two parallel sets of rollers (17) symmetrical along the axis of the pipe (14). The rollers are held in cages (19, 20), one of which can turn normal to the roller axis and is spring loaded toward the other cage. Two closed loop hauling chains (28) enclose the rollers of each row and are linked to the drive to displace the work toward the bending head. Two closed loop strips are of resilient material (29) and are fitted to the outside of each chain. The pipe is then clamped in the gap between the material faces. Each chain pref. comprises the individual gear racks with teeth facing the rollers and driven by a gear pinion.
Description  available in
Claims  available in
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
DE1527425A1 *19 Jun 19639 Oct 1969Schubin Wladimir NAutomatisierte Rohrbiegemaschine
GB1351277A * Title not available
US1779479 *19 Feb 192928 Oct 1930Union Drawn Steel CompanyMachine for working metal rods, bars, and the like
US2033423 *22 Jul 193310 Mar 1936Frank Carl F WMachine for bending pipes and the like
US2642280 *25 Oct 194516 Jun 1953Fisk Gustaf LApparatus for cold reducing metal bars
US3074465 *26 Jan 195922 Jan 1963Combustion EngMachine for the fabrication of spiral tube coils
US3373587 *8 Dec 196619 Mar 1968Fedorovich Barsov AlexeiAutomatic tube bending machines
Classifications
International ClassificationB21D7/08, B21B39/06
Cooperative ClassificationB21B39/06, B21D7/08
European ClassificationB21D7/08
Legal Events
DateCodeEventDescription
16 Dec 1982D2Grant after examination
14 Mar 19858339Ceased/non-payment of the annual fee