Patent ID: 6409945
Filing Date: 2002-06-25
Classification: B29C,G05B

Abstract:
A method of controlling an apparatus for taking out an injection-molded product, the apparatus being capable of taking out a injection-molded product (10) from a mold in an open state while being held by a product holder (42) and releasing it at a releasing position, the apparatus comprising: clamping direction driving means for moving a product holder (42) in a clamping direction; and ingress direction driving means for moving the product holder (42) in a direction at a right angle to the clamping direction such that the clamping direction driving means is operated during the operation of the ingress direction driving means and after stoppage thereof, whereby the product holder (42) is moved along a locus (C) starting from a waiting position (A1) via an initial linear zone (S), a curve zone (R) and a final linear zone (L) to a holding position (A4) for holding the product (10), the method comprising the steps of: determining a complementary time required for the movement of the product holder (42) toward a clamping direction from a starting position of movement in the clamping direction by a distance equal to a difference between a length from the waiting position (A1) to the holding position (A4) in the clamping direction and the length of the final linear zone (L); subtracting the complementary time from a ingress time required for the movement of the product holder (42) from the waiting position (A1) to a point on a straight line between the male and female molds in an open state; and adopting, as the length of the initial linear zone (S), a linear distance along which the product holder (42) moves from the waiting position (A1) toward a point on a linear line until the product holder (42) reaches the curved zone (R) for the same period of time as given by the subtraction.