Suction applying molded blocks in pipe forming apparatus

Details Suction applying molded blocks in pipe forming apparatus Suction applying molded blocks in pipe forming apparatus

B - Operations, Transporting

29

C

18/943

B29C 53/30 (2006.01) B29C 33/30 (2006.01) B29C 33/36 (2006.01) B29C 49/00 (2006.01) B29C 51/24 (2006.01)

Patent

CA 1298051

ABSTRACT The invention concerns apparatus for making corrugated tubing. Mold blocks for formation of a travelling mold tunnel are provided with suction to the mold face by means of communication between suction passages in the mold block and a suction chamber. Each mold block has a channel which slidingly engages a track of the suction chamber to receive suction as the mold blocks travel over the track. Tongue and groove connectors may be provided between the channel of each block and the track of the suction chamber and communication surfaces of the tongue and groove connectors to provide suction from the suction chamber to the mold face. 7074b

610446

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