Injection Molding Control Using 3D Geometry for Auto Setup
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Solution Overview
Problem
Existing methods for setting up injection molding machines require expert operators to individually specify parameters like speed, pressure, and temperature, limiting accessibility to non-experts and necessitating offline simulations or test parts.
Innovation Solution
A controller-internal system that uses geometric data of the molded part to determine and optimize plant and process parameters, shifting the dialogue from human expert to machine, allowing non-experts to operate the machine without manual parameter setting through a molding assistant that calculates necessary settings based on CAD data and material information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If expert operators manually specify parameters for injection molding machines, then manufacturing precision can be maintained, but ease of operation deteriorates as non-experts cannot operate the machine
Solution Approach 1:
The controller automatically determines plant and process parameters by itself based on geometric data of the molded part, without requiring expert operators to manually specify each parameter. The system serves itself by using integrated knowledge bases and algorithms to generate optimal settings autonomously
Solution Approach 2:
The system performs preliminary determination of all necessary parameters before the actual injection molding process begins. By pre-calculating optimal settings based on part geometry and material properties, the system eliminates the need for manual parameter specification during operation
2Productivity
If expert operators program all parameters individually, then reliability of the process can be ensured, but productivity deteriorates due to time-consuming setup
Solution Approach 1:
The controller performs preliminary determination of all process parameters based on geometric data before production begins. This advance calculation ensures reliable processes while eliminating time-consuming manual programming during setup
Solution Approach 2:
The system automatically adjusts and determines multiple process parameters simultaneously based on the geometric characteristics of the molded part. By changing from manual parameter-by-parameter specification to automated bulk determination, both productivity and reliability are improved
3Manufacturing precision
If offline simulation calculations are performed before production, then manufacturing precision can be optimized, but loss of time increases due to additional preparation steps
Solution Approach 1:
The system merges the simulation calculation functionality directly into the controller of the injection molding machine. By combining what were previously separate offline simulation tools with the machine control system, the patent eliminates the need for separate preparation steps while maintaining optimization capability
Solution Approach 2:
The controller performs necessary simulation and optimization calculations preliminarily based on geometric data before the injection molding process starts. This preliminary action integrates what would otherwise be separate time-consuming offline steps into the machine's own control system
4Ease of operation
If the controller uses geometric data of the molded part to automatically determine parameters, then ease of operation improves for non-experts, but device complexity increases
Solution Approach 1:
The controller is designed with multi-functionality, serving both as the basic machine control system and as an automated parameter determination system with simulation capabilities. By making the controller universal, the patent avoids adding separate complex devices while enabling non-expert operation
Data Source
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.