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Title:
BENDING MOLD MACHINE FOR WOODY MATERIAL
Document Type and Number:
Japanese Patent JPH0245101
Kind Code:
A
Abstract:

PURPOSE: To avoid an excessive compression stress to be exerted to a woody material during the period of bending mold, and perform the bending mold smoothly by laying a flexible plate between a pair of arms, and disposing a pair of frames slidably on both sides of the upper flexible plate, and attaching a pressure detecting means and pressure adjusting means to a hydraulic cylinder, and enabling a press die to be moved up and down.

CONSTITUTION: A panel lumber 18 is laid in impregnating with moisture as a woody material to be molded on a flexible plate 11, and frames 12, 13 are brought into contact with the both side surfaces of the lumber 18 by sliding the frames 12, 13 on the flexible plate 11, besides, the pressure of a hydraulic cylinders 16, 17 is adjusted to be constant by means of a pressure adjusting valve 25 A. Under this condition, a press die 20 is descended so as to press the lumber 18, and a bending mold is then conducted through performing a high frequency heating. The lumber 18 may exert the pull- directional pressure to the flexible plate 11 as it is bent, and since the hydraulic pressure tends to rise, the hydraulic pressure is adjusted to a desired pressure by means of a pressure adjusting valve 25 A. Afterwards, the lumber 18 is rendered to be bent while the hydraulic pressure within the hydraulic cylinders 16, 17 is kept constant with respect to the desired pressure in this manner.


Inventors:
YOSHIHARA SHIGERU
Application Number:
JP19626088A
Publication Date:
February 15, 1990
Filing Date:
August 05, 1988
Export Citation:
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Assignee:
YOSHIHARA SHIGERU
International Classes:
B27H1/00; (IPC1-7): B27H1/00
Attorney, Agent or Firm:
Tadao Usami



 
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