JPH0692106B2 - Molding monitoring data processing system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a system for processing molding monitoring data monitored by a control device for an injection molding machine or a die casting, and particularly processing the molding monitoring data for quality control. System.

[Conventional technology]

Conventional monitoring of molding monitoring data is performed by a relatively large-scale online monitor, and it is located in the integrated handling as so-called group management. It is collected online for each shot and immediately passed or rejected. It has been used as a means to improve quality by making judgments and displaying graphs (monitors).

[Problems to be solved by the invention]

However, the above-mentioned group management is very expensive in terms of capital investment, and such data analysis could not be performed for a user who does not have an online monitoring device.

Further, a large amount of data collected online for each shot was not stored and the data was not processed later, but at most output to the attached printer for each shot. Therefore, data analysis over the entire molding is manual and time consuming. In other words, there is only a printer that outputs molding monitoring data that processes data for each molding machine, and the processing and analysis of these data can be done by hand plotting or drawing, or by handing individual data. I was doing it by typing in the computer at work, but I spent a lot of time doing this.

[Means for solving problems]

In order to solve such a problem, the present invention provides an injection time, a metering time, a retreat time before die, an ejection time, a cycle time, a cushion amount, a holding pressure switching position, an injection pressure, each barrel temperature, a die temperature, A bubble cassette that stores molding monitoring data such as hydraulic oil temperature for each arbitrary shot, a read-only bubble cassette interface device for the molding monitoring data stored in this bubble cassette, and this bubble cassette via this bubble cassette interface device. A personal computer having a judgment processing means for reading the molding monitoring data stored in the bubble cassette set in the cassette interface device online and performing judgment processing such as quality judgment of molded products and statistical processing of molding monitoring data, The quality of molded products is controlled based on the output from a personal computer.

[Action]

In the present invention, the molding monitoring data is stored in the bubble cassette for each arbitrary shot. The molding monitoring data stored in the bubble cassette is read and processed online by the personal computer by setting the bubble cassette in the bubble cassette interface device.

〔Example〕

A processing system according to the present invention collects molding monitoring data logged by a control device by an interface device and a personal computer, displays the collected data, and performs statistical processing to improve quality control. . For example, a large amount of data for 2000 shots is stored in a bubble cassette, read by a personal computer, and statistically processed to perform quality analysis over the entire process.

FIG. 1 is a block diagram showing an embodiment of a molding monitoring data processing system according to the present invention. In FIG. 1, 1 is a control device, 2 is a bubble cassette, 3 is a bubble memory interface device, and 4 is a personal computer having a judgment processing means.

The specific data flow is shown below. By setting the bubble cassette 2 in the bubble cassette interface device 3, the contents of the bubble cassette 2 containing the molding monitoring data logged by the control device 1 can be read online by the personal computer 4 via the bubble cassette interface device 3. be able to. By performing statistical processing and the like using the data stored in the personal computer 4, the following reports and graphs can be output.

Defective product list The molding monitoring data of defective shots is output in time series, and it is possible to accurately grasp the cause of the defective products.

List of setting conditions In order to further pursue the cause of defective shots, this is for checking not only molding data but also set values.

Molding result table Also serves as a quality table on which the average and standard deviation values of molding monitoring data for non-defective shots are placed.

Correlation diagram This is for investigating the relationship between each factor by selecting any two factors in the molding monitoring data and expressing them in a correlation diagram.

Histogram By selecting one factor in the molding monitoring data, displaying it in a bar graph over all shots, and displaying the average and standard deviation values, it is possible to clearly see the variation in the data.

Trend graph This is a time-series line graph of several factors in the molding monitoring data over all shots, and is used to investigate temporal variations and the relationship of each factor.

In the above embodiment, the reading operation of the bubble cassette interface device 3 is performed by the built-in software.

〔The invention's effect〕

As described above, according to the present invention, the molding monitoring data stored in the set bubble cassette is read into the personal computer online via the bubble cassette interface device, and the judgment processing such as the quality judgment and the statistical processing of the molded product is performed. By doing so, it is possible to output statistical values such as defective factors of molded products, checking of set values, average and standard deviation values of molding monitoring data, and the relationship between each factor from the personal computer.
Further, since only desired ones to be analyzed can be selected from a large number of molding monitoring data, there is an effect that quality control of molded products can be performed at low cost without time and can be analyzed from various angles.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a molding monitoring data processing system according to the present invention. 1 ... Control device, 2 ... Bubble cassette, 3 ... Bubble cassette interface device, 4 ... Personal computer.

Claims (2)

[Claims] 1. Injection time, weighing time, retreat time before die, take-out time, cycle time, cushion amount, holding pressure switching position,
A bubble cassette that stores molding monitoring data such as injection pressure, each barrel temperature, mold temperature, and hydraulic oil temperature for each arbitrary shot, and a bubble cassette interface device for reading only the molding monitoring data stored in this bubble cassette. Through this bubble cassette interface device, the molding monitoring data stored in the bubble cassette set in this bubble cassette interface device is read online to make a judgment process such as quality judgment of the molded product and statistical processing of the molding monitoring data. A molding monitoring data processing system, comprising: a personal computer having a judgment processing means for carrying out the above, and performing quality control of a molded product based on an output from the personal computer. 2. The molding monitoring data processing system according to claim 1, wherein the bubble cassette interface device reads the molding monitoring data by software.