Abstract: A document retrieval apparatus includes: a storage unit that stores documents and dictionaries applied to a model, a correspondence between a model and documents applied to the model, and a correspondence between a document and dictionaries applied to the dictionary; a model selecting unit that selects a model; a search target document specifying unit that specifies documents applied to the model selected by the model selecting unit as search target documents; a dictionary specifying unit that specifies dictionaries applied to the search target document; a query receiving unit that inputs a query; a search keyword extraction unit that extracts a search keyword group by applying the dictionary specified by the dictionary specifying unit to the query; a retrieving unit that retrieves the search target document using the search keyword group; and a retrieval result presenting unit that displays search results retrieved by the retrieving unit.

Abstract: To collect data collectable from edge equipment in a standard data format prepared by standardization. A data format preparing device 10 includes: a data dictionary storage unit 121 that stores a data dictionary 1211 containing the type and unit of collectable data for each type of the edge equipment 30; a data format storage unit 122 that stores a standard data format in which an edge server is to receive data from the edge equipment 30; a data format setting unit 111 that sets the standard data format on the basis of the data dictionary 1211 stored in the data dictionary storage unit 121; a data format examining unit 112 that examines the set standard data format; and a data format registering unit 113 that registers the standard data format with the data format storage unit 122.

Abstract: A document retrieval apparatus includes: a storage unit that stores documents and dictionaries applied to a model, a correspondence between a model and documents applied to the model, and a correspondence between a document and dictionaries applied to the dictionary; a model selecting unit that selects a model; a search target document specifying unit that specifies documents applied to the model selected by the model selecting unit as search target documents; a dictionary specifying unit that specifies dictionaries applied to the search target document; a query receiving unit that inputs a query; a search keyword extraction unit that extracts a search keyword group by applying the dictionary specified by the dictionary specifying unit to the query; a retrieving unit that retrieves the search target document using the search keyword group; and a retrieval result presenting unit that displays search results retrieved by the retrieving unit.

Abstract: The present invention is intended to provide a document retrieval apparatus and a document retrieval method that are capable of accurately retrieving a desired portion from a document. The document retrieval apparatus 1 includes: a query receiving unit 11 configured to receive a query; a search keyword extraction unit 12 configured to extract a search keyword group from the query; a first search unit 13 configured to search a document 221 stored in a document storage area 22 using the search keyword group, and thereby to retrieve a first search result; a second. search unit 14 configured to, if the search keyword group includes a general word 211 stored in a general word storage area 21, search the document 221 using a second search keyword group corresponding to the search keyword group with the general word 211 excluded, and thereby to retrieve a second search result; and a search result presentation unit 16 configured to output the first search result and.

Abstract: An object is to provide a knowledge providing program, a knowledge providing device and a operation service system for easily providing knowledge information so as to receive the value thereof. An edge server executes: an input step of receiving, with a data API, an input of information of an event which occurs in a unit; an inquiry step of making, based on the information of the event which is input, an inquiry for the cause of or a countermeasure against the event to a knowledge manager for managing and providing knowledge information that is produced on the same event as the event; a reception step of receiving, from the knowledge manager, data which includes an answer to the inquiry; and an output step of outputting the received data.

Abstract: An object is to provide a knowledge production system which can efficiently produce knowledge information from less confidential information. A knowledge production system includes: a data reception part that receives, when an event occurs in a unit, only data after a time at which to go back only a preset time until the occurrence of the event; and a production part that extracts, from the received data and data received in the past by the occurrence of the same event as the event, a feature amount on the event so as to produce knowledge information of the event.

Abstract: An injection pressure waveform for use as a target value for injection pressure feedback control is set based on the actual injection pressure waveform detected when a conforming molded article is obtained. Alternatively, the target injection pressure waveform may be set by modifying a previously retained injection pressure waveform or an actual injection pressure waveform. The previously retained injection pressure waveform or actual injection pressure waveform is displayed on a screen of a display device (T1). Two points on the displayed injection pressure waveform are assigned, and the pressure waveform is modified into a line connecting these two points (T3, T6, T8). Further, two points on the injection pressure waveform and one point between these two points are assigned, and the pressure waveform is modified into a circular arc connecting these three points (T4, T7, T8).

Abstract: An injection pressure waveform for use as a target value for injection pressure feedback control is set based on the actual injection pressure waveform detected when a conforming molded article is obtained. Alternatively, the target injection pressure waveform may be set by modifying a previously retained injection pressure waveform or an actual injection pressure waveform. The previously retained injection pressure waveform or actual injection pressure waveform is displayed on a screen of a display device (T1). Two points on the displayed injection pressure waveform are assigned, and the pressure waveform is modified into a line connecting these two points (T3, T6, T8). Further, two points on the injection pressure waveform and one point between these two points are assigned, and the pressure waveform is modified into a circular arc connecting these three points (T4, T7, T8).

Abstract: A method of and an apparatus for analyzing alarms of an injection molding machine, in which the relation between the alarm and the production time can be grasped clearly and also various kinds of statistical processing can be performed in accordance with operator's request. The ratio of the number of alarm occurrences and the occurrence time to an assigned production time is analyzed and displayed by numerical values or a graph. Thereby, an effect caused by the length of substantial operating time (production time) of injection molding machine can be eliminated, and the occurrence of alarms, which is an essential problem, can be evaluated objectively.

Abstract: In an injection molding machine whose movable part is driven by an AC servo motor, d-phase current in a direction of magnetic flux produced by a field system and q-phase current orthogonal to the d-phase current are obtained through d-q conversion on the basis of drive current of the AC servo motor and a phase of a rotor. Control of current is made in DC mode on condition that the d-phase current is set to zero, and the q-phase current is adapted for a current command. Control of current in the DC mode as described above is designed to advance the phase of the q-phase current command, which is an effective component of a current command at the time of the occurrence of magnetic saturation, thereby preventing, the influence of magnetic saturation to lessen the fall of torque.

Abstract: The correlation between an injection stage and an injection speed initially set in an injection condition file is graphically displayed on a display screen. A modification section is set by assigning a starting point and an end point on the graph. Then, the shape of a segment which connects the starting point and the end point is selected and assigned, out of those of a straight line and a circular arc. Thus, a section between the two points constitutes one new injection stage. In this new injection stage, moreover, the injection speed is not always a constant value, and can be optionally set so that it linearly increases or decreases or changes along a circular arc in this section.

Abstract: A zero point adjusting method and apparatus for a pressure detector of an injection molding machine, capable of carrying out a zero point adjustment of the pressure detector when external loads acting on the pressure detector are completely removed without disassembling an injection mechanism. An advance limit position Qf and a retreat limit position Qb of a screw are detected by driving the screw with a low output to determine an intermediate position Pm. By moving the screw to the intermediate position Pm, a resin reaction force acting directly on the screw is removed. Reciprocating motion in which an amplitude decreases gradually is imparted to the screw, thereby causing a backlash, having equal plays in the advance and retreat directions, between a ball nut and a ball screw. Then, the zero point adjustment of the pressure detector is made.

Abstract: Over the whole range of the injection process, standard injection speeds and pressures are set and sections for injection speed control and sections for pressure control are set according to the length of time t, screw position S, or injection pressure P, each after the start of injection, or following the combination of the length of time and the screw position or of the length of time and the injection pressure. The arrival at the point of changeover from one control section to another is followed by a control mode shift. If the shift is made for speed control, injection speed is controlled in a manner such that actual injection speed may agree with one standard injection pressure, while if pressure control is selected by the shift, there is provided feedback control which is put into practice so that actual injection pressure may coincide with one standard injection pressure.

Abstract: A reference pressure waveform for injection molding operation is set in advance; pressures corresponding to the pressure waveform are detected with predetermined detection times during the injection molding operation; pressure deviations between pressure stored in the pressure waveform, corresponding to the detection times, and the detected pressures are obtained; and the pressure deviation for each detection time is graphically displayed on a display screen along with the reference pressure waveform.

Abstract: A mold clamping control method capable of preventing any warp or strain on a molded product without stopping an injection pressure holding process so as to cancel the pressing force of an injection screw. In a series of injection and pressure holding processes, a movable platen is retracted from a mold clamping dwell position P2 to a mold opening dwell position P1, so that a substantial volume of a cavity of a mold is increased to temporarily lower the internal pressure of the cavity, thus making an internal stress of resin to be a product uniform to eliminate stress strains. In this method, an injection molding is performed to produce a precise product having no warp or strain even in molding a light guide plate which is subjected to molding abnormalities by the temporary stoppage of the injection pressure holding process according to the conventional method.

Abstract: A temperature control method for an injection molding machine capable of performing stable temperature control at all times irrespective of the heat capacity of an object of temperature control. A temperature of an object of temperature control, such as a heating region of an injection cylinder, an injection nozzle and a mold, is detected by a respective temperature sensor G1-Gn. A feedback control of temperature is performed by a servo CPU (24) so that the detected temperature coincides with a set temperature, to obtain an electric current command value. Further, an actual electric current flowing in each of heaters H1-Hn is detected, and a feedback control of electric current is performed so that the actual current coincides with the current command value obtained by the temperature feedback control.

Abstract: A cylinder temperature setting method in which the cylinder temperature distribution obtained in the condition setting operation is realized with fidelity, even when the molding operation is performed on injection molding machines which are different from the injection molding machine used for condition setting in the number and/or positions of heat sources arranged on the injection cylinder. A waveform representing the cylinder temperature distribution is obtained from the relationship between the temperatures of respective cylinder portions detected by thermocouples and the positions of the respective thermocouples when a conforming product is molded by a reference injection molding machine. The obtained waveform is stored and reserved in a record medium. The target values for temperature control of respective cylinder portions of another injection molding machine are obtained based on the reserved waveform, thereby realizing the cylinder temperature distribution obtained in the condition setting.

Abstract: A programmable logic controller capable of freely and sequentially controlling peripheral equipment without modifying a system program. Necessary data for sequence control of the peripheral equipment are selected from data defined in the system program. The memory addresses corresponding to the data are assigned to addresses to be used in a user program in an address storage unit. The controller executes the system program to sequentially control an industrial machine, and also executes the user program to control the peripheral equipment. The controller refers to the data being used in executing the system program, which are necessary for sequence control of the peripheral equipment, based on the designated relationship of the addresses stored in the address storage unit.

Abstract: In an injection molding machine which performs movement control such that the rotation and axial movement of a screw (1) in a cylinder (10) are controlled in accordance with set injection molding conditions and executes an injection process for injecting a plasticized resin, for use as an injection object, into a mold (12), an injection molding condition setting method for the injection molding machine comprises: information detection process for detecting information on a time-based pressure acting on the resin in the injection process by means of injection pressure sensors (4, 13, 14), etc.

Abstract: An average is obtained between output readings of a pressure sensor obtained when forward and reverse thrusts are applied to an injection screw by positively driving a servomotor for injection. The average value is used as a correction value for a reading deviation of the pressure sensor. The injection servomotor is positively driven to apply a thrust to the screw. This known thrust and the actual reading of the sensor are compared. A deviation between these values is used as the correction value for the reading deviation of the sensor.