Plastic article or earthenware shaping or treating: apparatus – Vibrating means including mechanical movement or power means
Patent
1987-08-19
1989-05-16
Hoag, Willard
Plastic article or earthenware shaping or treating: apparatus
Vibrating means including mechanical movement or power means
164203, 173 49, 209367, B06B 116, B28B 108
Patent
active
048305979
ABSTRACT:
A vibrator for a concrete block molding machine to make molded concrete blocks comprises a vibrating table which receives wooden production pallets with a block mold on support bars and further comprises a vibrating drive. Infinitely adjustable amplitude level and frequency setting of the vibrating table is permitted because the vibrating drive means comprises four unbalanced vibrating shafts disposed especially in pairs beside and above each other. Those of the vibrating shafts which are arranged horizontally beside each other are adapted to be driven in contrary sense at the same number of revolutions by way of universal joint shafts from a regulator and distributor transmission. An hydraulic drive motor attached to the transmission is fed from an hydraulic pump of adjustable delivery volume of the hydraulic unit. Thus the vibrating frequency is adjustable by the rotational drive speed of the two horizontal vibrating shaft pairs (directional oscillators). The transmission further serves to vary the phase position of the vibrating shaft pairs with respect to each other and thus the oscillation amplitude of the vibrating table. A control means may be provided to sense the acceleration of the vibrating table and production pallet.
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Advertisement of Schlosser in "Betonwerk und Fertigteil-Technik," No. 3, 1986, cover page and p. 194.
Sonnenberg, R., "Vibratory Compaction in Block Machines," Betonwerk und Fertigteil-Technik, No. 8, 1979, pp. 478-485.
Holthaus Erich W.
Kargl Hermann
Steier Klaus F.
Hoag Willard
Knauer GmbH Maschinenfabrik
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