B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
153/16
B21D 19/00 (2006.01) B21D 41/00 (2006.01)
Patent
CA 1179244
ABSTRACT OF THE DISCLOSURE Apparatus for flanging tube ends are disclosed particularly adapted for use in flanging cylindrical sheet metal tubes to form rotatable drums for laundry machines. The apparatus for use in flanging one end of a thin metal tube comprises a frame, an outer carriage slidable on members forming part of the frame, a plurality of radially arranged pivotal outer forming tools pivotally mounted on the outer carriage so as to be pivotal through substantially 90°, an intermediate carriage slidable on the frame members, means on the intermediate carriage enabling a tube to be formed to be clamped thereon, a plurality of radially arranged pivotal inner forming means pivotally mounted on the intermediate carriage and arranged to be pivoted through substantially 90°, means to cause the outer forming means to pivot through said substantially 90° and force supplying means arranged to move the inner and outer forming means in a manner such that a radially inwardly directed flange on one end of the tube is formed, which flange has a width less than the radius of the tube and a cross sectional shape of a series of two sets of oppositely directed ribs the sides of which increase in depth from the tube wall towards the tube centre.
441615
Brodsky Alexander
Clark Richard J.
Fisher & Paykel Limited
Riches Mckenzie & Herbert Llp
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