Title:
【発明の名称】管を個々の管片に切断する為の方法及び装置
Document Type and Number:
Japanese Patent JP2954981
Kind Code:
B2
Abstract:
In the production of endless sheet-metal tubes, the problem of accurate and safe cutting-to-length arises.
According to the method, openings (8) are punched in a strip (2) which serves to wind a tube (4), which openings (8) are punched before the winding. A cutting apparatus (5) for carrying out the method has roller shears (10) which are designed in such a way that they can pivot with a cutting roller into this opening (8). The cutting action is then effected by the rotary movement of the tube (4). The cutting rollers of the roller shears each have two cutting edges. During the cutting action, the roller shears (10) run in synchronism with the tube (4) produced.
The use of the method has proved especially successful in ventilation engineering for spirally wound tubes.
Inventors:
RUDORUFU BINGERI
FURITSUTSU RANGUMAIERU
FURITSUTSU RANGUMAIERU
Application Number:
JP15176690A
Publication Date:
September 27, 1999
Filing Date:
June 12, 1990
Export Citation:
Assignee:
SUPIRO INTERN SA
International Classes:
B21C37/12; B23D21/14; B23D21/00; B23D25/04; B23D25/08; B26D5/32; (IPC1-7): B23D21/00; B23D21/00
Domestic Patent References:
| JP6254619A | ||||
| JP6457985A |
Attorney, Agent or Firm:
Mitsufumi Esaki (2 others)