Abstract: An object of the present invention is to enable to use a common transfer machine for transferring performs to and for transferring products from a press-forming system for glass having a plurality of press units. The press-forming system for glass has a plurality of press units. A linear moving stage is arranged in the proximity of the press units. A transfer robot is mounted on the linear moving stage. A pallet changer is arranged in the proximity of an end of the linear moving stage. A tray presently in use is mounted on a first mount and a new tray on standby is mounted on a second mount on the pallet changer. The inner space of the tray is partitioned into sections so as to correspond to press units in number. In each section, a plurality of pockets is arranged for storing preforms or products one by one.

Abstract: A screw is incorporated in a heating barrel, and the tail end of the screw is rotatably supported by the front surface of an intermediate plate. Behind the intermediate plate, two linear motor units are connected in parallel and arranged around the shaft of the screw to form axial symmetry. The output shafts of the linear motor units are connected to the tail end of a driving shaft through a common connecting arm, and the leading end of the driving shaft is fixed to the rear surface of the intermediate plate. Each of the liner motor units is constituted by a plurality of voice coil linear motors connected in parallel. Each of the linear motor units can be independently controlled. Voice-coil linear motors to be used are selected according to the type of product to be manufactured.

Abstract: An injection apparatus comprises a screw drive shaft, a motor which generates torque to rotate the screw, a speed reducer, and a power transmission mechanism. The power transmission mechanism has a first pulley on an output shaft of the motor, a second pulley on an input shaft of the speed reducer, and a belt passed around the first and second pulleys. The speed reducer is located between the second pulley and the screw drive shaft. The speed reducer is formed of a planetary gear mechanism, and both its input and output shafts are situated on an extension of an axis of the screw drive shaft.

Abstract: The tail end of a heating barrel is supported by a front plate. The tail end portion of a screw is rotatably supported by an intermediate plate. Bearings are built in the rear plate. The nut of each of ball screws is attached to the front surface of the rear plate through a hollow shaft and the bearing. Through holes are provided in the intermediate plate. To the front surface of the intermediate plate are fixed load cells so as to block the front of the through holes. The leading end portion of the threaded rod of each of the ball screws and leading end portion of the nut are inserted in each of the through holes. The leading end of the threaded rod is fixed to the rear surface of the load cell.

Abstract: A display device of an industrial machine that operates in accordance with an operating condition according to an aspect of the invention includes a unit which inputs a state of an operating quality for a change in the operating condition, a unit which stores history data indicative of the change in the operating condition and the state of the operating quality corresponding to the change, and a unit which displays the history data.

Abstract: A front plate and rear plate are connected to each other through a plurality of the bars. An intermediate plate is arranged between the front plate and the rear plate and guided by the tie bars to be movable. The front plate is fixed to a slide table. The rear plate and intermediate plate are supported by a linear slide guide on the slide table. A rear end portion of a barrel is fixed to a central area of the front plate. A rear end portion of a screw is supported by the intermediate plate with a bearing in between. A ball screw is incorporated in the rear plate and a forward end of a threaded rod of the ball screw is fixed to a central area of a back surface of the intermediate plate through a load cell.

Abstract: The nozzle is constituted by a nozzle body and a connecting block. The nozzle body is constituted by a casing and a core. A first passage is formed in the center of the core and a second passage is formed between the external surface of the core and the internal surface of the casing. The first passage and the second passage join together in front of the core and then lead to a discharge port at the tip end of the casing. In the interior of the connecting block are formed a first supply line and a second supply line. The first supply line connects a sub injection unit to a first supply port, and a first stop valve is provided within the line. The second supply line connects a main injection unit to a second supply port, and a second stop valve is provided within the line.

Abstract: There is disclosed a mold protection apparatus of an injection molding machine in which a cross head position and movable mold position are read from a correspondence table, a calculator calculates a thrust force limit value set with respect to a movable mold, and a cross head position controller controls a thrust force of the cross head in the corresponding position via a servomotor, so that the thrust force of the cross head is controlled to indicate a limit value or less in accordance with position of the movable mold.

Abstract: A susceptor is arranged in a reaction chamber, and an induction heating coil is arranged at a lower side of the susceptor. A ceiling of a bell jar is provided with an observation port, and an infrared radiation thermometer is arranged outside the observation port. A control unit controls the turning angle of the infrared radiation thermometer with a stepping motor, and detects the temperature of the susceptor at predetermined positions in radial direction. The control unit adjusts the heights of the induction heating coil at support positions, and uniforms the temperature distribution within the surface of the susceptor.

Abstract: A control device which controls an industrial machine according to an aspect of the invention includes a unit which determines whether the user is a registrant registered in advance, a unit which, when the user is determined to be the registrant, selects one of a setting permission state and a setting inhibition state individually for at least one operating condition of the industrial machine in accordance with the operation of the registrant, and a setting unit which accepts from the registrant a setting of the operating condition for which the setting permission state is selected.

Abstract: 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.

Abstract: An object of the present invention is to provide an injection-molding machine capable of accurately and conveniently setting operational conditions in the filling and pressure-holding steps. A curve showing the position of a screw versus time in the filling and pressure-holding steps is displayed on the same screen as that displaying settings for a forward speed and a back-pressure of the screw in the filling and pressure-holding steps. The operator can change settings while monitoring the data indicated by a curve displayed on the screen.

Abstract: The present invention relates to a method of detecting a malfunction during a die clamping step in an injection molding machine. A reference pattern is taken which shows a relation between a die clamping force and a position of a movable platen when die clamping is normally carried out. One or more monitoring sections are set in advance with respect to that position on the basis of the reference pattern and an allowable limit value of a die clamping force in the respective monitoring sections is also set in advance in a form of a linear function of the position. The die clamping force is monitored in the respective monitoring section during a respective die clamping step and, when its value exceeds the allowable limit value, it is decided that a malfunction occurs and an alarm is issued.

Abstract: The force pushing the ejector pin when a molded product is ejected is obtained from the driving torque of the servomotor. A malfunction is detected in the ejection step as follows. First, a reference pattern is obtained in advance, when a molded product is normally removed. As the reference pattern, the relationship between torque of the servomotor and time from the initiation of ejecting the ejector pin or the position of an ejector pin is used. At least one monitoring zone is set based on the pattern and the upper and lower limits of torque of each of the monitoring zones are set. A torque value is monitored in each monitoring zone and when the torque value falls outside the upper and lower limits of any one of the monitoring zones, it is determined that a malfunction occurred and an alarm is raised.

Abstract: An injection molding apparatus comprises a cell assembly that has a tiered frame. The tiered frame is provided with lower unit storage sections and upper unit storage sections. The lower unit storage sections are provided with holders, individually, and injection molding machine units are mounted on the holders, individually. The upper unit storage sections are provided with holders, individually, and injection molding machine units are mounted on the holders, individually. Material supply pipes, temperature control piping, etc. of the injection molding machine units are arranged in a layout space on the side of a back portion of the cell assembly.

Abstract: A cross head position corresponding to a movable mold position set by a movable mold position setting unit is read out from a correspondence table, the position of the cross head is controlled by a cross head position controlling unit via a servo-motor, and the position of the cross head is converted into a position of the movable mold, whereby target position setting of the movable mold is achieved.

Abstract: This invention provides a method which makes it possible to reliably detect malfunctions during the ejecting step without rendering the injection molding machine more complicated. An ejector pin is incorporated in the movable die. This ejector pin is connected, via an ejector plate, a connecting rod, a connecting plate and a feed screw, with a servo motor. The force for ejecting the ejector pin pushing a molded product is measured from the driving torque of a servo motor. In this invention, the relationship between driving torque and elapsed time from the initiation of ejection of the molded product is stored as a reference pattern. The tolerance limit and monitoring interval of driving torque are preset relative to the reference pattern. When the value of driving torque falls outside the tolerance limit during the ejecting step, it is judged as a malfunction, and an alarm is generated to stop the machine in a safe state.

Abstract: A stationary die is held on the front surface of a stationary platen and a movable die is held on the front surface of a movable platen. A plurality of monitoring sections are set in advance within a moving range of the movable platen and an upper limit of forward thrust of the movable platen is set for each of the monitoring sections. When the forward thrust of the movable platen reaches the upper limit set in one of the monitoring sections during a die closing operation, it is determined that abnormality occurs to stop the movable platen from moving forward. If a die closing mechanism is of a toggle link type, the forward thrust of the movable platen is calculated based on the thrust of a crosshead which drives a toggle link mechanism, the moving speed of the crosshead, and the moving speed of the movable platen.

Abstract: This invention provides a method which makes it possible to reliably detect malfunctions during the ejecting step without rendering the injection molding machine more complicated. An ejector pin is incorporated in the movable die. This ejector pin is connected, via an ejector plate, a connecting rod, a connecting plate and a feed screw, with a servo motor. The force for ejecting the ejector pin pushing a molded product is measured from the driving torque of a servo motor. In this invention, the relationship between driving torque and elapsed time from the initiation of ejection of the molded product is stored as a reference pattern. The tolerance limit and monitoring interval of driving torque are preset relative to the reference pattern. When the value of driving torque falls outside the tolerance limit during the ejecting step, it is judged as a malfunction, and an alarm is generated to stop the machine in a safe state.

Abstract: The present invention is directed to reduce the total footprint of a press forming system for glass having a plurality of press units, and also to increase an actual availability of each press unit. A plurality of press units are arranged in two parallel rows and a first transfer robot is arranged at the center of the space between the two rows. In adjacent of the moving area of the first transfer robot, a palette changer is arranged. A tray in use is mounted on a first base of the palette changer and a stand-by tray before use is placed on a second base. Blanks and formed products are stored in the tray. Press units equipped with second transfer robots, respectively. In front of the press units, intermediate transfer points are respectively provided for temporarily storing a blank and a formed product.