Toshiba Kikai Kabushiki Kaisha

Toshiba Machine Co., Ltd.

Munekata Co., Ltd.

Kiyoshi Sasaki

Yutaka Yamaguchi

Tsuginobu Totani

Jun Koike

Hideo Tanaka

Hiroshi Katsuta

Yukio Iimura

Masahiro Tamaki

Makoto Nishizawa

Yasumasa Sugiyama

Fumiyuki Katoh

Shoji Hayashi

Shigeru Fujita

Kazuhito Kobayashi

Masamitsu Suzuki

Susumu Harada

Haruyuki Matsubayashi

Nobuyuki Asanuma

Hideo Banzai

Hiroshi Kumazaki

Akira Kanda

Hirofumi Tateyama

Fumiyuki Kato

Katsuo Ito

Saburo Bannai

Atsuhiro Suzuki

Kazuyuki Ushizaka

Fukio Iimura

Shogo Ishibashi

Kazuhiro Tashiro

Go Ikeda

Operation state information for each cycle of manufacturing operations of each of injection molding machinesis acquired by a center management terminal devicevia a network from a plurality of controlling terminal devicefor controlling the injection molding machines. Cumulative utilization of replacement parts of each injection molding machineput into practical operation is recognized by the operating condition recognizing section of the center management terminal devicebased on the parts state information for the replacement parts of each injection molding machineincluded in the operating state information. Based on the cumulative utilization, availability of the parts is recognized with reference to lifetime information concerning lifetime of the parts previously stored in the center storage section, and situation of the availability is displayed with a different display format on the center terminal displaying section

Management supporting apparatus, management supporting system, management supporting method, management supporting program, and a recording medium with the program recorded therein

In the filling step, the forward movement speed of the screw is controlled in accordance with a predetermined speed pattern until the screw reaches a deceleration initiation point, LS B. After the screw reaches LS B, a deceleration step is started. In the deceleration step, the forward movement speed of the screw is controlled in a feedback manner such that the internal pressure of the mold reaches a predetermined target pressure. When the screw reaches a pressure holding initiation point, LS (or pressure holding initiation time, TR ), the pressure holding step is started. In the pressure holding step, the target pressure, which is a function of time, is changed with time in accordance with a program. When the operation goes to the pressure holding step, the set of PID coefficients within the feedback control loop are replaced by different set of PID coefficients.

Method for controlling the forward movement speed of the screw in an injection molding machine

In an injection molding machine utilizing a setting method of the present invention, there is substantially no limitation in the numbers of steps of an injection speed and a holding pressure, and in addition to rectangle, slope, polygonal line and flat, an arc can be designated as a shape mode. Because of using codes to define the shape mode, the setting operation becomes easy. In order to form one injection speed control pattern, a mix of shape modes may be utilized. Also, in the present setting method, a plurality of code data predeterminedly defined are input sequentially in time, thereby setting the injection speed control pattern or pressure holding control pattern. The code defines a kind of function which figures out an injection speed command data or a holding pressure command data corresponding to each stroke position or time.

Method for setting an injection speed control pattern of an injection molding machine

A filling step control method of an injection molding machine for filling a molten resin into a die cavity is provided. The control method has the steps of: sampling in initiating the filling step for filling the molten resin into the die cavity by controlling an injection speed and, thereafter, by controlling a filling pressure while not exceeding a predetermined value; storing the injection speed over an entire filling process when a quality product can be stably obtained during the sampling step into a storage medium as a reference waveform; and after storing the reference waveform, molding for filling the molten resin into the die cavity by controlling the injection speed to follow the reference waveform over the entire filling step.

Filling step control method of injection molding machine

An injection unit including a heating barrel and an injection screw rotationally and axially movable and placed in the heating barrel is disposed on one side of a clamping mechanism for clamping a mold. The injection screw is driven and controlled for operation through a ball screw by an electric motor. Products, each of a moving speed of the ball screw and an operating current supplied to the electric motor in a unit time, are accumulated to calculate a total energy value indicating the amount of total energy supplied to the ball screw. A life energy value is predetermined on the basis of products, each of force generated by the ball screw and a moving speed of the ball screw. It is decided that a life of the ball screw has terminated when the total energy value A is equal to or greater than the life energy B (A&gE;B).

Method of estimating a life of ball screw included in electric injection molding machine and life estimating system

An injection speed control procedure is applied to controlling an injection screw included in an electric injection molding machine and driven by an electric motor. An injection process is divided into a plurality of injection stages. Injection speed at which the injection screw is moved is changed at a time point when a value PS obtained by integrating injection pressure with respect to the position of the injection screw or a value PT obtained by integrating injection pressure with respect to injection time coincides with a predetermined reference value determined for each injection stage.

Method of controlling electric injection unit of injection molding machine

The duty of a current to be supplied to an injection motor is calculated on the basis of the ratio between set injection time for which the injection motor operates and molding cycle time, a shaft torque of the injection motor is calculated on the basis of a set maximum injection force of the injection molding condition, a maximum current for the injection motor is determined on the basis of the calculated shaft torque, and it is decided that the injection motor is overloaded, an alarm is given, a duty for a current that enables continuous molding is retrieved for the maximum current, a state that enables continuous molding is displayed and the molding cycle time determining the duty of the current that enables continuous molding is corrected when the current having the calculated desired duty is smaller than the maximum current.

Motor control method for injection molding machine and motor controller

A method of storing data in an internal storage device included in a process controller for controlling a molding machine divides storage areas of the internal storage device hierarchically into a molding condition data storage area for storing molding condition data specific to a product or an operating environment, a changeable machine data storage area for storing changeable machine data specific to the molding machine and necessary for setting operating conditions and subject to change when necessary, and an unchangeable machine data storage area for storing unchangeable machine data specific to the molding machine. The molding condition data storage area, the changeable machine data storage area, and the unchangeable machine data storage area can selectively be initialized individually or in an optional combination.

Method of storing data in internal storage device in a molding machine

A man-machine interface system for a process controller according to the present invention enables its direct picture select button function to be effectively used by each user, and is improved in the operability of picture selection for interrupt display. The system includes a display, a picture data controller for controlling the pictures, which are displayed on the display, and at least one direct picture select button for requesting the display of an interrupt picture on the display to set control requirements and monitor operating conditions with the controller. In response to the interrupt picture display request by the button, a specified picture is displayed as an interruption on the display. The system further includes an interrupt picture definition table for setting by the user to changeably define on a user's setting picture the picture for interrupt display. The interrupt picture set by the user can be displayed independently of the initialization hierarchy by only operating the button.

Man-machine interface system for a process controller

A method and system of controlling a screw engaging position adjuster provided in a complex mold clamping system. A theoretical deviation of a screw engaging position is theoretically calculated on the basis of a distance by which a movable die has been moved from an origin set for a mold thickness adjustment in clamping process. A measured deviation of the screw engaging position is measured from a distance between a mold clamping cylinder and a movable platen in clamping process. The screw engaging position adjuster is so controlled that a difference between the theoretical deviation and the measuring deviation is within an allowable deviation having previously been set.

Method and apparatus for adjustment in mold thickness of a complex mold

The barrel temperature control apparatus for an injection molding machine can execute the barrel temperature control in such a way as to optimize the disturbance suppression characteristics. The temperature control section 7 comprises the manipulated variable addition and subtraction section 14 at the rear stage of the PiD control section 12 in such a way that the barrel temperature of the injection molding machine 1 can be controlled under both feedback and feed-forward. Further, when the same products are molded continuously, the barrel temperature is feed-forward controlled on the basis of the learned change manipulated variable.

Barrel temperature control system for injection molding machine

A control apparatus for an injection molding machine has a unit for setting data corresponding to a molding operation of the injection molding machine and for controlling the molding operation of the machine based on a setting of a setting unit. The setting unit has a register for holding numerical input data, an input/output control unit for inputting and outputting numerical value data to and from the register on the basis of an external command, a numerical value manipulating unit for incrementing and decrementing the numerical value data in the register through a manual operation, a numerical value display unit for displaying numerical value data stored in the register, and a place position shifting unit for shifting set places in the numerical value display and in the numerical value manipulating unit on the basis of the number of places in the integer part of the numerical value data.

Control apparatus for an injection molding machine

In an apparatus for indicating and controlling temperature at a plurality of positions, under the control of a function selecting device, set data stored in a data memory are transferred to a current memory and indicated in a plurality of indicators. A control device calculates control values based on the set values and sensed values, and delivers outputs for controlling the temperatures. When the function selecting device selects remote operation, the apparatus may be operated by a host computer and the like.

Temperature indicating control apparatus having data storing function

In an injection molding machine combined with a peripheral apparatus, control units capable of interchanging signals are provided for the molding machine and the peripheral apparatus. Each control unit comprises a memory device storing set molding data applied with numbers or identifications. When the control unit of the molding machine sends the set data number or identification to the control unit of the peripheral apparatus to read out from the memory devices, the set molding data are formed when the numbers or identifications coincide with each other.

Control systems of injection molding machines

A control panel of an injection molding machine is normally housed in a recess of the base of the machine. To operate operating buttons and to set operating data, the operating panel is swung to a horizontal position by a handle. The operating panel is supported by a gas filled damper connected between the bottom of the panel and the base.

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Mishima, Japan

Kiyoshi Sasaki