DEVICE FOR FLATTENING AUTOMATIC DEVELOPMENT OF STEEL PIPE STOCK

• Main Authors: HONDA SUECHIKA, OKA TAKASHI, TATSUTA SHOICHI
• Format: Patent
• Language: English
• Published: 04.07.1988
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MEASURING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PHYSICS; PUNCHING METAL; TESTING; TRANSPORTING

PURPOSE:To develop the steel pipe stock cutting one part of circumference in a plate shape by pressing two small diameter rolls to the pipe inner face inserting them into the pipe by placing a steel pipe stock on a large diameter roll and rotating the large diameter roll as well. CONSTITUTION:The steel pipe stock 1 cutting one place of the circumference is placed on a large diameter roll 2 by a feed robot, etc. The holding member 7 holding two small diameter rolls 5, 6 is inserted into the steel pipe stock 1 via a moving device 9 and moving platform 18. A lift platform 17 is then moved by descending it by a lift moving device 8 and the lower pair of the steel pipe stock 1 is held by a large diameter roll 2 and small diameter rolls 5, 6. A pressing member 11 is descended by rolling reduction devices 20, 21 and the pressing member 11 is descended by rolling reduction devices 22, 23 as well top press the holding member 7. In the case of subjecting each small diameter roll 5, 6 to a rolling reduction, the left moving device 8 is simultaneously shrank to move the small diameter rolls 5, 6 in parallel. The rolling reduction force by rolling reduction members 20-23 is transmitted to the small diameter rolls 5, 6 via pressing members 10, 11 and the holding member 7 and the steel pipe stock 1 is developed by the large diameter roll 2 and small diameter rolls 5, 6.