PURPOSE: To prevent a sheet material from being ruptured as the sheet material is pulled into the relief recession of a suction mold at the time of sticking a sheet material on a basement material with use of a suction mold.
CONSTITUTION: When a suction mold is set on the basement material 3, a bracket 3b integrally mounted on the basement material 3 comes into the relief recession 10, and the lower end of the bracket 3b strikes against the lever 14 of a block member 11 from its upper part so that the lever 14 is pressed downwards under the influence of a weight of the basement material 3 and, therefore, the arm 15 rotates clockwise about the shaft 12 from the position of a phantom line to the position of a full line as shown in figure, so that the opening of the relief recession 10 is blocked to be nearly flush with the mold main body by a lid plate 16.
NOGUCHI HIROAKI
YASUTOMI SHIGEKI
