Toshiba Kikai Kabushiki Kaisha

Yukio Mizota

Hiroshi Yokoyama

Norihiro Iwamoto

Masayuki Takamura

Kenichi Suzuki

Shunichiro Ito

A molding machine able to stably detect an abnormality of a squeeze pin, for example, a die cast machine having a squeeze pin able to apply pressure to a melt of a cavity repeatedly performing a molding cycle including a pressing process making the squeeze pin advance and applying pressure to the melt of the cavity in a state where the melt is filled in the cavity and a spray process making the squeeze pin advance and performing at least one of lubrication and cooling of the squeeze pin in the state where the melt is not filled in the cavity, and, in the spray process, detecting a stroke of the squeeze pin and detecting an abnormality of the squeeze pin based on a comparison of the detection result about the stroke and a predetermined reference value.

Method of detection of abnormality of squeeze pin and molding machine

A method of quality control of a die casting product, which method is capable of judging the quality in real time at a higher accuracy and updating and managing good quality product data for judging the higher quality thereof, includes a step of reading in measured data obtained as a result of a predetermined measurement with respect to the product cast by the die assembly in use together with the casting condition data, a step of sequentially accumulating the read measured data and casting condition data up to a predetermined capacity and performing a comparison display of the measured data combined with good quality product data to be used for judging a quality of the product, a step of repeating, if the comparatively displayed measured data are higher in quality than the present good quality product data, the above steps, then setting the accumulated measured data as a new good quality product data and updating the present good quality product data and the present casting condition data together with the above casting condition data, and a step of storing and holding the updated good quality product data and the updated casting condition data.

Method of quality control of die casting product and die casting machine

An injection device of a die casting machine including an injecting cylinder, in which a piston connecting to a piston rod is slidably thrust into a cylinder body and in which pressurized oil is fed to the side of the piston from a pressurized oil source and flows out from the side of the piston rod, and a servo valve controlling an injection speed of the injection cylinder device by controlling the amount of flow of pressurized oil that flows out from the injecting cylinder. The servo valve is directly attached to the cylinder body of the injecting cylinder and a flow channel connecting the injecting cylinder and servo valve is shortened.

Injection device of a die casting machine

A man-machine interface inputs basic data including die and product data to a casting condition calculating section for calculations to have candidate values computed therefrom by expressions for control items of a casting control process, which values are each received as a candidate value to be set for a corresponding control item by a casting condition setting section, which cooperates with a casting condition setting conformity deciding section for a decision on a conformity of the candidate value to a given condition that can be changed by an operator who can observe a result of the decision on a display and a result of an actual casting.

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Numazu, Japan

Yukio Mizota