Other

Fujitsu Corporation

Ikushi Takasaki

Shusaku Nishiyama

Masao Kamiguchi

Tatsuhiro Uchiyama

Katsuya Sakaba

Jun Sasaki

Akihiko Yabuki

To provide a microinjection equipment capable of fitting a micro needle to a manipulator etc. manipulating the micro needle in short time on the occasion of an injection operation. Included are a micro needle transporting devicedetachably grasping a micro needlefilled with an introduction substance and disposed in a predetermined standby position and transporting the micro needleto a predetermined ready-for-introducing position, a manipulatorgrasping in the attachable/detachable manner the micro needledisposed in the predetermined ready-for-introducing position and inserting and removing the tip of the micro needleinto and from an introduction target micro body, and an introduction substance discharging devicedischarging the introduction substance in the micro needleby applying a predetermined pressure to an interior of the micro needlegrasped by the manipulator

Microinjection equipment

An injection is carried out under a certain molding condition with a nozzle in an injection molding machine left open to sample an injection pressure Pr in every certain cycle for storing. Detected pressure data Pr( ) to Pr(N) for one shot is stored as reference pressure data Pr ( ) to Pr (N). When defective molding occurs or when a resin lot is changed or the like, the injection is carried out with the nozzle left open under the same molding condition as that used in obtaining the reference pressure data to obtain the detected pressure data Pr( ) to Pr(N). Waveforms of the detected pressure data Pr( ) to Pr(N) and reference pressure data Pr ( ) to Pr (N) are graphically represented so that variation of the molding condition is observed. It is assumed that if there are any differences, a problem resides in the resin, while if there is no difference but the defective molding occurs, the problem resides in a mold.

Method for determining molding characteristic and injection molding machine

A resin flow analysis in a die is performed by CAE or the like to obtain a resin pressure curve at a resin inlet port or a resin pressure curve at a nozzle end portion of a molding machine. Injection (air shot) is performed while a nozzle is separated from a die, so that an injection pressure curve Pa to be detected at this time is obtained. From the injection pressure curve and the resin pressure curve, an injection pressure command curve serving as a molding condition in mass production is obtained. The resin pressure curve obtained by the resin flow analysis is compensated by the injection pressure curve in an air shot for a time lag and pressure loss caused by the mechanical elements of an injection molding machine, so that molding conditions in mass production can be easily obtained. In addition, a pressure loss at the nozzle portion is also obtained, so that an injection pressure command curve is obtained from the pressure loss, the injection pressure curve, and the resin pressure curve.

Method, apparatus, and medium for forming molding condition and molding machine

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Kawasaki, Japan

Ikushi Takasaki