MOLD THICKNESS ADJUSTING METHOD AND DEVICE FOR INJECTION MOLDER

摘要

PROBLEM TO BE SOLVED: To shorten a mold thickness adjusting time, execute a mold clamping stable for the change of a mold thickness due to disturbances or the like, and realize the detection of the position of a mold for executing the proper mold clamping by means of the low cost constitution of a device. ;SOLUTION: The positional relationship between a link housing 38 and a travelling die plate 34 is detected by an encoder 42a provided on a mold clamping servo motor 42. In addition, the amount of movement of a link housing 38 is detected with a rotational frequency detecting sensor 48 through a provided mold thickness adjusting motor 46 for rotatingly driving mold thickness adjusting nuts 39 engaging with threaded parts 36a formed at one end part of tie bar 36. After that, with a positional detecting sensor 50 provided at the retreated position of the link housing is detected so as to set the position of the die plate 34 from a fixed die plate 32 on the basis of the position of the link housing from the fixed die plate 32 through calculation.;COPYRIGHT: (C)2000,JPO