| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for setting a mold clamping force of an injection molding machine, configured to prevent burr while improving the quality by degassed molding or to prevent reduction in the service life of a mold by determining a necessary and minimum set mold clamping force for preventing the mold from being opened. <P>SOLUTION: When a transition point from a state 2 (the section in which a mold clamping force maximum increment in injection is increased when a set mold clamping force is increased) to a state 3 (the section in which the mold clamping force maximum increment is increased larger than in the state 2) is detected, measurement is performed at two arbitrary points of the two sections to acquire measured mold clamping force maximum increment Amax and mold clamping maximum increment Bmax respectively, and linear approximate expression Fmax=a*Fs+b is determined. Since a set clamping force C in the state 2 satisfies mold clamping force maximum increment Cmax≤(A*C+b)+β, and a set mold clamping force D in the state 3 satisfies measured mold clamping force maximum increment Dmax>(a*D+b)+β. The transition to the state 3 can be determined accordingly, and a proper mold clamping force can be set on the basis of the set mold clamping force in the transition from the state 2 to the state 3. <P>COPYRIGHT: (C)2013,JPO&INPIT |
