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Method for analyzing injection molding process capability by using data of sensor in injection mold cavity

A technology for injection mold cavity and capability analysis, which is applied in the field of injection molding process capability analysis using sensor data in the injection mold cavity, which can solve problems such as time-consuming and labor-intensive, and achieve the effect of improving statistical efficiency and reducing human error.

Pending Publication Date: 2021-08-20
上海澎睿智能科技有限公司
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Problems solved by technology

This method is not only time-consuming and laborious, it is difficult to weigh each product for mass-produced products

Method used

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  • Method for analyzing injection molding process capability by using data of sensor in injection mold cavity
  • Method for analyzing injection molding process capability by using data of sensor in injection mold cavity
  • Method for analyzing injection molding process capability by using data of sensor in injection mold cavity

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Embodiment

[0054] Such as Figure 1-9 As shown, the method for analyzing the capability of the injection molding process by using the sensor data in the injection mold cavity includes the following steps:

[0055] Step 1: Install a pressure sensor near the gate of the mold, and collect raw data from the sensor in tabular form;

[0056] Step 2: Store the collected data into the database;

[0057] Step 3: Select the mold and production date to be analyzed;

[0058] Step 4: Select the maximum pressure as the monitoring point;

[0059] Step 5: Remove the periodic data of shutdown and air launch;

[0060] Step 6: Graphically display the continuous curve of cavity pressure;

[0061] Step 7: Project the points on the curve to the ordinate to form one-dimensional data;

[0062] Step 8: Calculate Ca, Cp, Cpk;

[0063] Step 9: Judge the process and quality according to the values ​​of Ca, Cp, and Cpk;

[0064] Step 10: Calculate the quality distribution of all productions connected to the s...

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Abstract

The invention discloses a method for analyzing injection molding process capability by using data of a sensor in an injection mold cavity. The method comprises the following steps of installing a pressure sensor at a near sprue of a mold, and counting original data collected from the sensor in a table form; storing the collected data into a database; selecting a mold and a production date that need to be analyzed; selecting the maximum pressure value as a monitoring point; removing periodic data of shutdown and air shooting; displaying a mold cavity pressure continuous curve through a graph; projecting a point on the curve to longitudinal coordinates to form one-dimensional data; calculating Ca, Cp and Cpk; judging the process and the quality according to the values of Ca, Cp and Cpk. and calculating the quality distribution of all productions connected to a system. The method has the advantages that data of the sensor in the mold cavity is collected, the process capacity of injection molding production is automatically calculated through computer software, manual operation is not needed, errors are reduced, the efficiency is improved, the obtained injection molding process capacity index can help a main engine plant know the production capacity of an injection molding plant, and therefore a proper injection molding plant is selected.

Description

technical field [0001] The invention relates to the technical field of injection molding process capability analysis, in particular to a method for analyzing injection molding process capability by utilizing sensor data in an injection mold cavity. Background technique [0002] In the manufacturing industry, the ability to produce qualified products is generally judged by calculating Ca, Cp, and CPK. Process accuracy is an index to measure the consistency between the actual center value and the specification center value in the process, that is, the positional relationship. The calculation method is Ca= (Avg(X)–C) / (T / 2), where: Avg(X) is the sample average, C is the specification center, T is the specification tolerance, and the process precision is a parameter that reflects the process ability to meet the product quality standard , and its calculation method is Cp=(USL–LSL) / 6δ, where: [0003] [0004] Process Capability Index: A convenient method to indicate the level ...

Claims

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Application Information

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IPC IPC(8): B29C45/76
CPCB29C45/76B29C2945/76973
Inventor 王怡贺磊尹广亮郑优生
Owner 上海澎睿智能科技有限公司
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