Clamping device of injection molding machine

摘要

An adaptor plate is provided between a platen and a mold to measure a temperature of each of divided regions obtained by dividing the adaptor plate into a plurality of regions and adjust a temperature for each of the regions. By doing so, it is possible to adjust the temperature at points closer to the center of the mold than tie bars. Further, by adjusting the temperature of the adaptor plate provided between the platen and the mold, it is possible to precisely adjust a tie bar balance and a platen parallelism even during molding.

主权项

1. A clamping device of an injection molding machine in which a rear platen and a fixed platen are coupled by a plurality of tie bars and corresponding nuts and in which a movable platen is arranged to be guided by the tie bars, the clamping device comprising:
an adaptor plate which is provided between the fixed platen and a fixed-side mold to be fixed to the fixed platen, and/or between the movable platen and a movable-side mold to be fixed to the movable platen; a temperature measuring unit configured to measure a temperature of each of a plurality of divided regions of the adaptor plate; a temperature adjusting unit configured to adjust the temperature of each of the plurality of divided regions of the adaptor plate; and a control unit configured to cause the temperature adjusting unit to adjust the temperature of each of the plurality of divided regions of the adaptor plate when a reference value is between a first reference value and a second reference value, wherein
the first reference value is a value based on which it is determined to perform adjustment by way of temperature control, andthe second reference value is a value based on which it is determined to perform mechanical adjustment, the mechanical adjustment comprising adjusting the nuts when the reference value is at or greater than the second reference value.