JPH09174636A - Injection molding machine operation data display method - Google Patents

Abstract

(57) [Abstract] [Problem] A method of displaying operation data, which is very useful for cause analysis when a trouble occurs, by making it possible to visually confirm an actual measurement graph of a desired stroke speed and pressure and a logic graph at the same time. To be realized. A microcomputer for driving and controlling each part of a machine based on each set operating condition value and measurement information from each sensor is provided, and the microcomputer has a series of molding operations according to a predetermined molding operation program. In the injection molding machine that executes the stroke and stores and stores the measured data of each operating condition during operation, the microcomputer converts the acquired measured data according to the instruction of the operator and is attached to the machine. The display device is caused to display an actual measurement graph of the speed, pressure, etc. of the designated stroke and a logic graph showing the state of the input / output port of the designated stroke in the form of being written together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of displaying operation data of an injection molding machine, and more particularly, to a microcomputer (hereinafter referred to as a microcomputer) that captures and stores operation data during continuous operation and control of the microcomputer. The present invention relates to a method of displaying operation data in an injection molding machine equipped with a display device capable of displaying various mode images underneath.

[0002]

2. Description of the Related Art Recent microcomputer-controlled injection molding machines are equipped with a display device such as a color CRT display or a color liquid crystal display, and this display device sets or confirms molding operation conditions for automatic molding operation. Various setting condition display mode images to display, various measurement data display mode images to display actual measurement data of many measurement items during automatic molding operation, inspection items are automatically displayed at the time of regular operation, and periodic inspection is performed. Regular inspection mode image to prompt
An alarm mode image or the like is displayed to recognize this when an abnormality occurs.

Recently, a graphic image is often used as an image to be displayed in the actual measurement data display mode image, which enhances the visibility of the actual measurement data and is highly convenient for monitoring and data analysis. Has been realized. As a conventional technique capable of displaying such measured graphic data, for example, Japanese Patent Laid-Open No. 5-42 is available.
575 publication is mentioned. In the injection molding machine disclosed in this prior application, it is possible to display a measurement graph such as a measurement graph of a measurement process, a measurement graph of an injection process, a measurement graph of a mold opening / closing process, and a measurement graph of an eject process together with a setting graph. Also, the state of the input / output port, that is, the ON state of the actuator that controls the drive of each part.
A logic graph showing the ON / OFF timing can also be displayed.

[0004]

In the prior art according to the above-mentioned prior application, the actual measurement graph of each process and the logic graph showing the state of the input / output port can be displayed. However, the actual measurement of each process is possible. The graph and the logic graph were to be displayed separately on individual screens. Therefore, when the measured graphic image of a certain stroke is displayed, the O of the actuator corresponding to this stroke is displayed.
In order to check the N / OFF timing, the measured graphic image must be deleted and the logic graph image must be called, and the measured graph and the logic graph cannot be viewed simultaneously on the same screen. It was pointed out that is bad.

[0005] The present invention has been made in view of the above points,
The purpose is to make it possible to visually confirm the actual measurement graph of the desired stroke speed and pressure and the logic graph at the same time, thereby realizing a method of displaying operation data that is very useful for cause analysis when a trouble occurs. Especially.

[0006]

In order to achieve the above-mentioned object, the present invention comprises a microcomputer for driving and controlling each part of a machine based on each set operating condition value and measurement information from each sensor, The microcomputer executes a series of molding operation strokes according to a predetermined molding operation program, and instruct the operator in the operation data display method of the injection molding machine that captures and stores the actual measurement data of each operating condition during operation. Causes the microcomputer to convert the measured data taken in above and display it on the display device attached to the machine to measure the speed and pressure of the specified stroke and the status of the input / output ports of the specified stroke. , And the logic graph showing the are displayed together.

A trouble occurred by displaying a measured graph of, for example, velocity or pressure in a certain process and a logic graph of the input / output port corresponding to this process, for example, in the form of being written together along the same time axis. At times, it is possible to easily compare and collate the data of the actually measured graph with the state of the input / output port, that is, the ON / OFF timing of the actuator, which is convenient for analyzing the cause of the trouble.

[0008]

Embodiments of the present invention will be described below. FIG. 1 is a simplified block diagram of a control system of an injection molding machine according to an embodiment of the present invention (hereinafter referred to as this embodiment). In FIG. 1, 1 is a machine (injection molding machine)
A microcomputer that controls overall operation control and display control, 2 is a sensor group composed of many sensors provided in each part of the machine, and 3 is for driving and controlling many drive sources arranged in each part of the machine. Driver group composed of a large number of driver circuits, 4 is a key input device provided on the front surface of the machine, and 5 is a device provided adjacent to the key input device 4, such as a color CRT display, a color liquid crystal display, etc. It is a display device consisting of.

The microcomputer 1 shown in FIG. 1 controls the entire molding process such as weighing operation, injection operation, mold opening / closing operation, ejecting operation, calculation / storing process of measured data, non-defective / defective product determination process, and abnormality determination process. Various processing such as calculation / determination processing of the above, display control processing of the output image of the display device 5, and the like are executed. The microcomputer 1 actually comprises various I / O interfaces, ROM, RAM, CPU, etc., and executes various processes by various programs created in advance, but in this example, molding condition setting is performed. Storage unit 10, molding process control unit 11, measured value storage unit 1
2. The following description will be made assuming that the display processing unit 13 and the like are provided. The display processing unit 13 is provided with a data conversion processing unit 14, a graph scale generation unit 15, a fixed display data storage unit 16, a display image data generation unit 17, and the like.

Various operating condition values input by the key input device 4 are stored in the molding condition setting storage unit 10 in a rewritable form. Items of this operating condition include, for example, metering control condition, injection control condition, mold closing (mold clamping) control condition, mold opening control condition, eject control condition, band heater temperature of each part, control condition of automatic product take-out machine, etc. Is mentioned.

The molding process control unit 11 is based on a molding process control program created in advance and setting condition values stored in the molding condition setting storage unit 10, and the sensor group 2 arranged in each unit of the machine. While referring to the measurement information from (position sensor, pressure sensor, temperature sensor, etc.) and the timing information from the clock built in itself, the driver group 3 (motor driver, hydraulic cylinder driver,
A corresponding drive source is driven and controlled via a heater driver, etc., and a series of molding steps are executed.

The actually measured value storage unit 12 stores all actually measured data of preset monitor items during continuous automatic operation over a predetermined number of consecutive shots. The monitor items to be fetched include time monitoring items, position monitoring items, rotation speed monitoring items, speed monitoring items, pressure monitoring items, temperature monitoring items, power monitoring items, and the like, and the important items of the molding operation condition setting items described above. Are almost overlapping.

The display processing unit 13 displays display image data of a designated display mode based on a display image creation / control program created in advance by an instruction to call a display image in a mode desired by the operator using the key input device 4. Create

That is, when a predetermined display image calling command arrives by the operator, the data conversion processing unit 14 of the display processing unit 13 is stored in the molding condition setting storage unit 10 and the measured value storage unit 12 as needed. Data to be used for displaying the display mode image is extracted from the information, and is converted into a form corresponding to the specified display mode of the display mode image. For example, if the designated display mode is a graphic image of a certain process,
The extracted data is converted into line drawing image data, predetermined data such as the maximum value is converted into numerical image data, and the designated display mode is an operation state setting image of a certain stroke. Then, the extracted data is converted into numerical image data. Further, when the designated display mode is the graphic image, the graph scale generation unit 15 includes the contents of the data conversion processing unit 14 described above,
Alternatively, the graph scale (graph scale) generation program created in advance generates the graph scale image data and the scale numerical value image data at a predetermined magnification based on the scale instruction from the operator.

The generation processing data of the data conversion processing unit 14 and the graph scale generation unit 15 are fetched by the display image data generation unit 17, and when the designated display mode is a graphic image, a predetermined magnification is set. At a predetermined position on the graph scale image data, the line drawing-processed graphic image data, which has been converted and processed into an enlargement / reduction ratio according to the graph scale, is overwritten and combined. Also, from the fixed data for a large number of mode images, characters, symbols, graphic figures, ruled line data, etc., which are created and stored in the display fixed data storage section 16 in advance, they are used for displaying the display mode image. Data is extracted, and the data is extracted by the display image data generation unit 17 and is similarly synthesized as display image data.
As a result, the display image data generation unit 17 causes the specified graphic display image graph scale, scale number, line drawing graph, mode display character, unit symbol, item display character,
Image data is created in which predetermined data values and the like are arranged and synthesized in a predetermined manner, and color division information and the like are added, and the image data is rewritably held. If the designated display mode is not a graphic image, the contents of the data conversion processing unit 14 and the display fixed data storage unit 16
Similarly, image data for the designated display image is generated and held in the display image data generation unit 17.

The image data of the display image data generation unit 17 is transferred to a frame buffer (not shown) and temporarily stored therein, and the output of the frame buffer is sent to the display device 5 according to a command from the display processing unit 13. Display device 5
Will be displayed on the display screen.

FIG. 2 shows a speed measurement graph of the mold opening / closing stroke of the most recent molding cycle, which is called up on the display screen of the display device 5 by the operator appropriately operating the key input device 4, and electromagnetic waves for opening / closing the mold. It is a figure which shows an example of the type | mold opening / closing graphic logic graph which displayed with the logic graph showing the state of a control valve (solenoid of each valve) together on the same screen.

In FIG. 2, 21 is a measured graph of the mold closing speed, 22 is a measured graph of the mold opening speed, 23 is a logic graph of the first electromagnetic control valve (solenoid SOL51) for closing the mold, and 24 is the mold closing. Second electromagnetic control valve (solenoid SOL52) logic graph, 25
Is a first electromagnetic control valve for opening the mold (solenoid SO
L61) is a logic graph, 26 is a logic graph of the second electromagnetic control valve (solenoid SOL61) for mold opening, and each graph 21 to 26 is shown along the same time axis.

By calling up the image having the form as shown in FIG. 2 as necessary, the operator can obtain the data of the measured graph 21 of the mold closing speed and the logic graphs 23 and 24.
Alternatively, it becomes possible to compare and collate the measured mold opening speed graph 22 with the logic graphs 25 and 26 at a glance. Therefore, it is very convenient for analyzing the cause when a trouble occurs.

The display form shown in FIG. 2 is only an example, and an actual measurement graph of speed, pressure, etc. in a certain stroke and a logic graph showing the state of the input / output port in this stroke are shown together. Any form may be used as long as it is displayed in the form.

[0021]

As described above, according to the present invention, the actual measurement graph of the speed and pressure of the desired stroke and the logic graph can be visually recognized at the same time, which is very useful for the cause analysis when a trouble occurs. A method of displaying operation data can be realized.

[Brief description of the drawings]

FIG. 1 is a simplified block diagram of a control system of an injection molding machine according to an embodiment of the present invention.

FIG. 2 is a display form 1 according to an embodiment of the present invention.
It is explanatory drawing which shows an example.

[Explanation of symbols]

 1 Microcomputer (microcomputer) 2 Sensor group 3 Driver group 4 Key input device 5 Display device 10 Molding condition setting storage unit 11 Molding process control unit 12 Measured value storage unit 13 Display processing unit 21 Measured graph of mold closing speed 22 Mold opening speed Actual measurement graph 23, 24, 25, 26 Logic graph

Claims (1)

[Claims] 1. A microcomputer for driving and controlling each part of a machine on the basis of each set operating condition value and measurement information from each sensor is provided, and the microcomputer carries out a series of operations in accordance with a predetermined molding operation program. In the injection molding machine that executes the molding operation process of (1) and stores and stores the measured data of each operating condition during operation, the microcomputer converts the acquired measured data according to the operator's instruction. On the display device attached to the machine, the measured graph of the speed and pressure of the specified stroke and the logic graph showing the state of the input / output port of the specified stroke are displayed together. A method for displaying operating data of an injection molding machine, characterized by: