Toshiba Kikai Kabushiki Kaisha

Toshiba Machine Co., Ltd.

Makoto Nishizawa

Yutaka Yamaguchi

Jun Koike

Hiroshi Katsuta

Takashi Yamazaki

Kazuhito Kobayashi

Masamitsu Suzuki

Haruyuki Matsubayashi

Toshihiro Kasai

Yukio Iimura

Harumichi Tokuyama

Takaki Miyauchi

Takahiro Furuno

Nobuyuki Muroi

Kiyoshi Sasaki

Akira Yoshinaga

Yasumasa Sugiyama

Hiroyuki Onuma

Motoyuki Miyauchi

Fumiyuki Katoh

Katsuhito Ogura

Junsuke Kawai

Katsuyoshi Kido

Fumiyuki Kato

Kiyoshi Inoue

Nobuyuki Asanuma

Hideaki Kitta

Akira Kanda

Takamitsu Yamashita

Ryoji Tominaga

Kunihiko Noda

Motoyasu Ohue

Tatsuhiko Maru

Hirotaka Sekino

Nobuhide Tomura

Akihide Okube

Katsumi Watanabe

Tomonori Morita

Hajime Kitamura

Yutaka Yamaguohi

Used in a method of this invention is a die clamping unit, which comprises a tie bar movably attached to a stationary platen, a halfnut positioning servomotor which advances and retreats to the tie bar, a halfnut which is provided on a movable platen and fixes the movable platen and the tie bar together by engaging the tie bar, an engaging mechanism which engages the halfnut with the tie bar, a hydraulic die clamping cylinder which presses the stationary platen and the movable platen, and a control device which controls the halfnut positioning servomotor and the hydraulic cylinder. The control device drives the halfnut positioning servomotor to remove a clearance between the halfnut and an engaging groove of the tie bar before a die clamping process carried out by the hydraulic cylinder.

Die clamping method

Used in a method of this invention is a die clamping unit, which comprises a tie bar movably attached to a stationary platen, a halfnut positioning servomotor which advances and retreats the tie bar, a halfnut which is provided on a movable platen and fixes the movable platen and the tie bar together by engaging the tie bar, an engaging mechanism which engages the halfnut with the tie bar, a hydraulic die clamping cylinder which presses the stationary platen and the movable platen, and a control device which controls the halfnut positioning servomotor and the hydraulic cylinder. The control device drives the halfnut positioning servomotor to remove a clearance between the halfnut and an engaging groove of the tie bar before a die clamping process carried out by the hydraulic cylinder.

Die clamping unit and die clamping method

There is disclosed a control system of an injection molding machine in which a controller mounted on a main body side of an injection molding machine comprises a data memory having a memory area to always reflect information regarding a plurality of operation conditions and operation situations corresponding to peripheral devices, and a program to give a desired command to the peripheral devices, and a control section of the peripheral devices and the controller on the injection molding machine main body side comprise a data transmission line to always reflect information regarding the operation conditions and the operation situations, and a transmission control section equipped with a protocol regarding a signal transmitted through the transmission line.

Control system of molding machine

A plurality of condition setting screens necessary to set various operation conditions of an injection molding machine is switched and displayed on a touch-panel-equipped display unit of a human-machine interface.

Control device of injection molding machine

A die clamping unit includes a stationary platen, a tie bar which is attached to the stationary platen, a movable platen which is movable forwards and backwards along the tie bar with respect to the stationary platen, a first servomotor which moves the movable platen away from the stationary platen in a core-back operation, a second servomotor which moves the movable platen forwards and backwards to perform die-opening and -closing, and a control device which drives the first servomotor to move the movable platen away from the stationary platen and which drives the second servomotor to apply a force to the movable platen in the direction toward the stationary platen in the core-back operation.

Die clamping unit

White noise is applied to a servocontrol system of a servomotor in order to measure a frequency characteristic of a mechanical component in an electric injection molding machine, and a signal from an encoder is applied to a fast Fourier converter. Data from the fast Fourier converter is applied to a memory unit, and the content of the memory unit is displayed on a display unit in the form of a board diagram. Repair announcement is issued when a deviation of the resonant frequency of each mechanical component with respect to data at an initial setting time exceeds a predetermined value.

Method and apparatus for issuing repair alerts in a transmission mechanism

A control device of an injection molding machine which injects a molten resin from an injection nozzle is provided with a display section in which a touch panel is disposed, and a human-machine interface section equipped with a general-purpose operating system, and the human-machine interface section is provided with at least a storage section to store set values which are various molding conditions for each mold article and a control section which controls the display of the display section. The interface section displays, on the display section, a main screen to change settings for the molding conditions stored in the storage section and a subscreen to display indications such as monitors, and also constantly displays a change switch for a change of the screen in a fixed region of the display section.

Control device for use in injection molding machine

A movable die is held on the front face of a movable platen. Ejector pins are incorporated in the movable die. An ejector unit that is provided with an ejector plate, actuator rods, etc., is mounted on the back of the movable platen. In ejecting a molded product from a die face, the ejector plate is advanced to cause the actuator rods to push out the ejector pins. In the ejecting load monitoring method of the invention, a plurality of monitoring sections are provided in a movement area of the ejector plate (or the actuator rod), and an upper limit value of a forward thrust load of the ejector plate is previously set for each monitoring section. An alarm is issued when the forward thrust load of the ejector plate reaches the upper limit value set for any of the monitoring sections during the ejecting operation.

Ejecting load monitoring method for injection molding machine

A horizontal multi-material molding machine includes a rotary table having a rotation axis center in a horizontal direction, a multi-material molding metal mold mounted on the rotary table, injection plunger units disposed to advance to and retreat from the multi-material molding metal mold for injecting a molten resin into cavities of the multi-material molding metal mold, a servo motor for rotating the rotary table, and a brake mechanism mounted on the servo motor and actuated when the servo motor is stopped for maintaing the position of the rotary table.

Horizontal multi-material molding machine

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

Method for mold clamping of the present invention is capable of shortening a molding cycle without any initial setting works for an engaging position of a tie bars. The method is constituted the steps of moving the tie bars in the direction of mold closing during mold close operation, judging a relative moving speed between a movable die plate and the tie bar to be within a predetermined value, engaging the tie bars with the movable die plate mechanically by operating an engaging means when the relative moving speed is judged to be within the value, then further moving the movable die plate against a fixed die plate under engagement, and after contact of a movable mold with a fixed mold driving a mold clamping cylinder, thereby executing mold clamping operation.

Method and apparatus for mold clamping in an injection molding machine and the like

An injection apparatus for industrial machine capable of high speed injection is provided with an injection barrel communicating with a cavity formed by at least a pair of mold dies and introducing mold material to an end portion on communicating side of the barrel, a screw for injection inserted in the barrel in which the screw is capable of reciprocating motion so as to inject and fill the mold material into the cavity, a support means holding an end of the screw opposite to the cavity and capable of moving in the direction of the reciprocating motion, a first drive mechanism including an electric servomotor for moving the support means in the direction of the reciprocating motion and a second drive mechanism for moving the first drive mechanism in the direction of the reciprocating motion.

Injection apparatus for an industrial machine

An object of the present invention is to suppress a clamping force from sharply increasing when dies are clamped in an electric direct-acting die clamping unit of an injection molding machine. A movable platen is arranged to face a stationary platen. A stationary die is attached to the front surface of the stationary platen, whereas a movable die is attached to the front surface of the movable platen. The movable platen is connected to the front surface of a backup plate via four coil springs. A nut of a ball screw is fixed at each of diagonally-opposed corners of the backup plate. The threaded rod of the ball screw passes through the backup plate via the nut. The tip portion of the threaded rod is rotatably connected to the stationary platen. The rear end portion of the threaded rod is connected to a motor.

Electric direct-acting die clamping unit of an injection molding machine

When text information is inputted as electronic data from an operation panel of a display apparatus, which functions as a human-machine interface of an injection molding machine, an operation panel controller of the display apparatus stores the electronic data of the inputted text information. When an instruction to display text information is emitted from the operation panel, the operation panel controller displays the stored electronic text information in the display apparatus, according to the instruction.

Display apparatus of injection molding machine

An injection molding machine using a linear motor, has a linear motor serving as a linear drive mechanism; a temperature sensor configured to detect a temperature of a coil of said linear motor or an ambient temperature thereof; an input unit configured to input a signal of the temperature detected by said temperature sensor; a data converting unit configured to convert the detected temperature signal into temperature data; a storage unit, including a temperature data setting unit configured to preset an allowable temperature, etc., configured to store temperature data converted by said data converting unit; a comparing/calculating unit configured to compare the temperature data converted by said data converting unit with a set value set in said data setting unit and make a calculation thereof; an output unit configured to output an instruction signal and display data, corresponding to a result of the calculation by said comparing/calculating unit; and a display unit configured to display the display data outputted from said comparing/calculating unit.

Growing community of inventors

Numazu, Japan

Makoto Nishizawa