Packerhead and core control system

Details Packerhead and core control system Packerhead and core control system

B - Operations, Transporting

28

B

25/16

B28B 21/24 (2006.01) B28B 21/06 (2006.01)

Patent

CA 1125999

ABSTRACT OF DISCLOSURE: A concrete pipe making machine having a packerhead vibrat- ing core and a control for automatically controlling the move- ment of the packerhead and core relative to each other as the packerhead and core move up and down within a mold to form a concrete pipe. The control has valve units operable to restrict the flow of hydraulic fluid supplied to the hydraulic control cylinders which control the movements of the packerhead and core.

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