Method and device for the cutting of pipes into separate pipe se

Details Method and device for the cutting of pipes into separate pipe se Method and device for the cutting of pipes into separate pipe se

1990-06-06

1991-12-24

Schwartz, Larry I.

Metal working

Method of mechanical manufacture

Obtaining plural product pieces from unitary workpiece

29414, 29 33T, 29 33S, 82 58, 82 70, 82 94, 83343, B21B 1500, B23B 306

Patent

active

050740180

ABSTRACT:
A method and apparatus for cutting pipes into sections are described. A punching unit (7) forms apertures (8) in strip (2) from which pipe (4) is formed on winding core (3). A cutting device (5) has a circular shears (10) which has a first, smaller-diameter cutting roller (13) and a second cutting roller (14) each having two cutting edges. The first cutting roller (13) is swivelled through aperture (8) into the pipe (4). Rotary movement of the pipe (4) effects cutting, during which the cutting rollers (13, 14) move in synchronism with the pipe (4) so that the pipe is cut from the inside and the outside by the cutting rollers (13, 14).

REFERENCES:
patent: 3133483 (1964-05-01), Glasby
patent: 3564707 (1971-02-01), Ensign
patent: 3813972 (1974-06-01), Van Alsburg
patent: 4220077 (1980-09-01), Miller et al.
patent: 4706481 (1987-11-01), Castricum

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