Invention Grant
- Patent Title: Machine for manufacturing spiral seam piping from strip metal
- Patent Title (中): 用于制造带状金属螺旋缝管的机器
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Application No.: US629802Application Date: 1984-07-11
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Publication No.: US4578971APublication Date: 1986-04-01
- Inventor: Willi Leweke , Dietmar Orth
- Applicant: Willi Leweke , Dietmar Orth
- Applicant Address: DEX
- Assignee: Hoesch Aktiengesellschaft
- Current Assignee: Hoesch Aktiengesellschaft
- Current Assignee Address: DEX
- Priority: DEX3326050 19830720
- Main IPC: B21C37/12
- IPC: B21C37/12 ; B23K9/032
Abstract:
In a machine for manufacturing spiral seam piping from strip metal, using a set of three forming rolls consisting of a large number of individual bending rollers, the bending rollers acting on the inside of the pipe being arranged on a roller carrier which is capable of adjustment, the roller carrier (22) is controlled and driven in order to tilt it laterally by the use of a parallelogram control arm system (23) with two control arms (25, 26) arranged in a first control circle plane (24a) and one control arm (27) arranged in a second control circle plane (24b), at least one control circle adjuster (28, 29) associated with a control circle plane (24a, 24b), a link rod (31) acting in the direction of the pipe centerline (30), a lifting device (33) pivoted at the end (32) of the roller carrier (22), and a height-adjustable mounting (34) with a joint plate (36) carried in a bearing in the central portion of the roller carrier (22), a double lever (37) and a lifting device (38).
Public/Granted literature
- US5295141A Sensing and responding to invalid states in logic circuitry Public/Granted day:1994-03-15
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