摘要:
A method of monitoring data concerning injection pressure in an injection molding machine is disclosed in which a multipoint sampling technique is used to acquire and store injection pressure reference data in the form of a time varying data curve for a first injection molding cycle. The reference data is used to form upper allowance data which is stored in the form of a time varying data curve having a constant offset from the reference data curve. The upper allowance data is then compared with injection pressure data acquired using a multipoint sampling technique during a second injection molding cycle and an alarm is issued if the data acquired in the second injection molding cycle exceeds the upper allowance data.
摘要:
An apparatus for monitoring data concerning injection pressure in an injection molding machine is disclosed in which a multipoint sampling technique is used to acquire and store injection pressure reference data in the form of a time varying data curve for a first injection molding cycle. The reference data is used to form upper allowance data which is stored in the form of a time varying data curve having a constant offset from the reference data curve. The upper allowance data is then compared with injection pressure data acquired using a multipoint sampling technique during a second injection molding cycle and an alarm is issued if the data acquired in the second injection molding cycle exceeds the upper allowance data.
摘要:
In a method of and apparatus for controlling a plasticizing process of a resin of an in-line screw-type injection molding machine, a position of the screw is continuously detected in accordance with the movement thereof and a control function is determined by a back pressure of the screw which is compensated for by taking into consideration such as resin heating energy and shearing energy, which determine a temperature distribution of a resin to be injected. The operating condition, particularly the number of revolutions and the back pressure of the screw, is controlled on the basis of the screw position so as to make uniform the temperature distribution of the resin.
摘要:
A technique is disclosed for displaying monitoring data of a continuously varying operation condition of a drive mechanism driven by an actuator, in which data of one operation cycle of the drive mechanism is detected preliminarily as reference data and data for another operation cycle succeeding to the one operation cycle is detected. The last-detected data is then superposed on the reference data and displayed on a coordinate axis on a monitor to show deviation between the reference data and the detected data of each operation cycle. Allowable uppermost and lowermost limit data of the reference data are also calculated and displayed on the same coordinate axis of the displaying surface of the monitor.
摘要:
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.
摘要:
An apparatus for displaying monitoring data of a continuously varying operation condition of a drive mechanism driven by an actuator, in which data of one operation cycle of the drive mechanism is detected preliminarily as reference data and displayed on a coordinate axis on a monitor to show deviation between the reference data and the detected data of each operation cycle. Allowable uppermost and lowermost limit data of the reference data are also calculated and displayed on the same coordinate axis of the displaying surface of the monitor.
摘要:
An apparatus for supervising an injection stroke of an injection machine of the type wherein injection parameters are detected at a number of points in a filling stroke, and detected parameters are sequentially sampled at a plurality of points over the entire filling stroke, the filling stroke is divided into a plurality of regions, and the injection parameters measured in respective divided regions are judged as to whether the parameters can produce satisfactory products or not. Such parameters are used as reference values and sequentially sampled parameters are subtracted by the reference values. The differences are accumulated for respective regions and when accumulated differences exceed predetermined permissible values an alarm signal is issued.
摘要:
A full automatic operation system for an injection molding machine which is capable of smoothly and automatically starting the purge and start-up operations and then beginning to produce the completely molded products after the barrel, mold and hydraulic fluid are heated to their optimum temperatures, respectively, automatically stopping the molding operation in case that continuous production of incomplete molded products or an abnormal condition in the molding machine occurs during the automatic operation and automatically restarting the operation after the stop.
摘要:
A non-linear function f(A) of an effective value D' with respect to a desired value A regarding speed, pressure or the like of an actuator of a hydraulic apparatus in a closed loop control for the hydraulic apparatus is operated and a value regarding quantity of electricity to be applied to a valve of a drive mechanism of the hydraulic apparatus is outputted as a non-linear function f(A) in a case where a non-linear function D=f(A) is established between the desired value A and an effective value D regarding speed, pressure or the like of the actuator in the opened loop control for the hydraulic apparatus.
摘要:
A motor drive system used with industrial robots, processing machines, and the like comprising an external interface part ready for connecting a plurality of kinds of host controllers generating a command signal; a sensor interface part to which a motor rotation detecting sensor is connected; a main control part operating for feedback control of a motor according to signals provided by way of the interfaces; and a power amplification part for feeding a current to motor coils according to a control signal from the main control part and wherein the external interface part, the sensor interface part, the main control part, and the power amplification part are separate and modularized as cards. Advantageously, the various controllers, sensors and power systems are changeable to flexibly meet different user requirements.