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Method for controlling mold filling process of injection-molding machine

A technology of injection molding and mould, which is applied in the field of process control of mold filling process, can solve the problems of complex technical feasibility and cost, and achieve the effect of easy start and restart

Active Publication Date: 2016-05-18
KRAUSSMAFFEI TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it appears that at least some of the described solutions are complex and complicated and cost-intensive in terms of their technical implementation.

Method used

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  • Method for controlling mold filling process of injection-molding machine
  • Method for controlling mold filling process of injection-molding machine
  • Method for controlling mold filling process of injection-molding machine

Examples

Experimental program
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Embodiment Construction

[0073] According to the learning phase of the method of the present invention ( figure 1 ) begins by providing an injection molding machine equipped with a mold and configured to produce a good part in a cavity of the mould.

[0074] For a better understanding of the following graphs, it is emphasized that the screw position s(t) is at figure 1 , 2 from the start position s A until at the transition point COP L or COP P The screw position on (ie s=COP L or s=COP P )reduce.

[0075] Acquisition of the pressure change P when carrying out the injection molding learning cycle for a good part LMasse (t), which is related to the material pressure change for the injection molding learning cycle. The acquisition of this pressure change is done over time t. Complementary to this pressure change p Lmasse (t), at figure 1 In , the screw position s(t) and the screw speed v(t) are also drawn by means of dashed lines. Plot the characteristic moment t(s=CP on the time axis L ), ...

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Abstract

The invention relates to a method for filling a mold cavity of a molding tool in a volumetrically correct manner. A molded part / volume equivalence is ascertained during a learning phase, and production injection-molding cycles are influenced during a production phase such that the molded part / volume equivalence ascertained during the learning phase is also satisfied during the production injection-molding cycle.

Description

technical field [0001] The invention relates to a method for process control of a mold filling process of an injection molding machine. Background technique [0002] Solutions are known from the prior art for compensating process fluctuations which have a negative influence on the mold filling process of an injection molding machine and are caused by disturbing influences. [0003] A method is known from EP 2583811 A1 for quantifying process fluctuations in the injection process of an injection molding machine. The method utilizes a reference curve of characteristic values ​​along the stroke or number of positions (X) that sweep across the injection unit of the injection molding machine during the injection process. The individual characteristic values ​​can at the same time be pressure values, for example injection pressure, melt pressure, internal mold pressure or internal mold temperature. During the injection process at least one characteristic value is measured for a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/76
CPCB29C45/76B29C45/77B29C45/7646B29C2945/76006B29C2945/76063B29C2945/76381B29C2945/76404B29C2945/76936B29C2945/76949B29C2945/76966B29C2945/76056B29C45/7613B29C45/1808
Inventor R·席费尔斯S·莫泽S·克鲁帕
Owner KRAUSSMAFFEI TECH GMBH