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Title:
LOW NOISE MOLDING APPARATUS FOR CONCRETE SECONDARY ARTICLE
Document Type and Number:
Japanese Patent JP2627054
Kind Code:
B2
Abstract:

PURPOSE: To enable concrete material to be filled densely, and make noise or vibration relatively low by pivoting a transverse axle secured on the center of a mold frame receiving table to the main body frame, and making the mold frame receiving table rotate, and then making the mold frame receiving table rotate reversely with its reaction force after the collision of the mold frame receiving table to the the main body frame.
CONSTITUTION: The transverse axle 12 fixed on the center of a mold frame receiving table 1 Is pivoted on the frame 7 of a main body, and a crank shaft 13 having an almost elliptical through hole 15 is mounted on the transverse axle 12. A rotary disc is secured on the shaft of a motor 17 provided on the main body frame 7 of the main body, and a cam 30 is provided at the position being eccentric from the rotational center. Through rotation of the motor 17, the can 30 is put into contact with the inner peripheral surface of the through hole 15 in order to rotate the mold frame receiving table 1 in a swinging manner and give a large stroke and low frequency oscillation to the mold frame 48. As the end 3a or 3b of the mold frame receiving table 1 comes into collision with the main body frame 7, the cam 30 and through hole 15 are left not engaged with each other, and by the reaction force of collision, the mold frame receiving table 1 rotates reversely once or several times, to thus generate a high frequency oscillation.


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Inventors:
Tokuhiro Umezawa
Application Number:
JP20449994A
Publication Date:
July 02, 1997
Filing Date:
August 05, 1994
Export Citation:
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Assignee:
Tokuhiro Umezawa
International Classes:
B28B1/08; B28B13/00; (IPC1-7): B28B1/08; B28B13/00
Domestic Patent References:
JP5734906A
JP5076123A
Attorney, Agent or Firm:
Masuda Mamoru



 
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