Injection Molding Control Using 3D Part Data for Machine Setup
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Solution Overview
Problem
Existing methods for setting up injection molding machines require expert knowledge and manual parameter setting, limiting accessibility for non-experts and necessitating the production of test parts or offline simulations.
Innovation Solution
A control system that uses 3D geometry data of the intended injection molded part to automatically determine and set system and process parameters, eliminating the need for manual parameter input and reducing reliance on operator expertise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual parameter setting and expert knowledge are required for machine setup, then manufacturing precision and process reliability are maintained, but ease of operation and accessibility for non-experts deteriorate
Solution Approach 1:
The control system performs self-service by automatically determining system and process parameters based on geometric data of the molded part. The controller acts as an internal programmer that autonomously calculates injection molding parameters without requiring external expert intervention, thereby enabling non-experts to operate the machine while maintaining reliable parameter settings through algorithmic calculations
Solution Approach 2:
The patent replaces the mechanical/knowledge-based system (expert operator's brain and manual programming) with an automated computational system. The controller uses geometric data processing and algorithmic calculations to substitute the expert's manual parameter setting, transforming the setup process from a knowledge-intensive manual task to an automated digital process
2Productivity
If expert knowledge and manual parameter setting are required, then process reliability is maintained, but productivity and setup time are reduced
Solution Approach 1:
The control system performs preliminary action by automatically determining all necessary system and process parameters before the actual injection molding process begins. By pre-calculating parameters based on geometric data, the system eliminates the need for time-consuming manual setup and test parts, thereby increasing productivity while ensuring reliable parameters are established in advance
Solution Approach 2:
The patent uses geometric data (CAD models or 3D scans) as a digital copy of the molded part to derive all process parameters. This digital copy serves as the basis for automatic parameter calculation, eliminating the need for physical test parts and iterative manual adjustment, thus improving both productivity and reliability
3Manufacturing precision
If test parts and offline simulations are required for parameter determination, then manufacturing precision is ensured, but loss of time and productivity are increased
Solution Approach 1:
The patent replaces physical test part production and offline simulation processes with an automated computational system that directly calculates parameters from geometric data. This substitution eliminates the time-consuming iterative process of making test parts and performing offline simulations while maintaining manufacturing precision through algorithmic parameter determination
Solution Approach 2:
The system uses a digital copy (geometric data) of the molded part to directly determine process parameters without needing physical copies (test parts). This digital modeling approach allows for immediate parameter calculation and eliminates the time loss associated with producing and measuring physical test parts
Data Source
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AI summary
The invention relates to a method which is used to operate an injection molding machine for processing plastics, which has a mold closing unit (F) for opening and closing an injection mold (M) having at least one mold cavity (12) in order to produce an injection molded part (13), an injection molding unit (S) for plasticizing and injecting new plasticizable material into the mold cavity (12), and a control system (11) for operating the injection molding machine (10). Stored in the control system is expert knowledge (E) about the operation of the injection molding machine and the peripheral devices (P) of the latter which may possibly be present and about the production of injection molded parts (13) using injection molding technology, in order to produce an injection molded part (13) using interactive contact as needed by an operator by using injection molding parameters. The fact that, in further steps, information about the component or the mold cavity (12) is provided to the control system (10) means that the plant and process parameters required for the production of the injection molded part (13) can be calculated by the control system (10) before the first injection molded part is produced, such that an alternative procedure for the operator-friendly setting of a machine for processing plastics is made available.