Injection Molding Machine Selective Condition Control
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Solution Overview
Problem
Existing injection molding machines face challenges in selectively maintaining and setting specific molding conditions without altering unrelated values, leading to inconsistencies and suboptimal settings during mold changes, particularly when transferring master conditions from a mold manufacturing department to a mass-production plant.
Innovation Solution
The injection molding machine is equipped with a system allowing operators to selectively designate and maintain specific molding condition items, using a display device and data input system to prevent changes to fixed values, while enabling controlled rewriting of other condition settings through two modes, ensuring consistency and preventing unintended changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If molding conditions are automatically set from storage device during mold replacement, then productivity is improved, but manufacturing precision deteriorates due to unintended changes in fixed values
Solution Approach 1:
The molding conditions are segmented into two distinct categories: mold-related conditions (to be automatically updated) and machine-related conditions (to be maintained fixed). This segmentation allows the system to selectively apply updates only to appropriate parameters, preventing unintended changes in fixed values while maintaining productivity benefits of automated mold condition transfer.
Solution Approach 2:
Different quality attributes are applied to different molding condition parameters. Mold-related parameters receive automatic update quality (high adaptability), while machine-related parameters maintain fixed quality (high precision). This local differentiation ensures that each parameter type receives the appropriate treatment based on its specific requirements.
2Ease of operation
If all molding conditions are collectively set from storage device, then ease of operation is improved, but reliability deteriorates due to inability to maintain fixed values
Solution Approach 1:
The system segments molding conditions into mold-related and machine-related categories, enabling selective automatic setting. Operators can benefit from the simplicity of automated condition transfer for mold parameters while maintaining reliability for machine parameters that should remain fixed, thus resolving the contradiction between ease of operation and reliability.
Solution Approach 2:
The system dynamically adjusts the setting behavior based on parameter type. For mold-related conditions, automatic setting is activated (dynamic adaptability); for machine-related conditions, fixed value maintenance is activated (dynamic stability). This dynamic control allows the system to adapt to different operational requirements without compromising reliability.
3Manufacturing precision
If molding conditions are manually adjusted for each mold, then manufacturing precision is improved, but productivity deteriorates due to time-consuming operations
Solution Approach 1:
By segmenting conditions into automatic and manual setting categories, the system allows rapid automatic transfer of mold-related parameters (boosting productivity) while maintaining the option for manual adjustment of critical machine-related parameters when needed (preserving precision). This segmentation enables a balance between speed and accuracy.
Solution Approach 2:
Mold-related molding conditions are pre-stored in the storage device with optimal values. When mold replacement occurs, these pre-prepared conditions are automatically retrieved and applied, eliminating the need for manual adjustment and significantly reducing setup time while maintaining manufacturing precision through pre-optimized parameters.
Data Source
AI summary
An injection molding machine configured so that items of molding conditions of which values are not changed can be set selectively when a set of molding conditions is read from a storage device so that values for the read molding condition items are set as the set values. Installation setting is established for the set items of those molding conditions of which set values are prohibited from being changed. When a set of predetermined values of the molding conditions is read from the storage device and set collectively, the set values for only those set items which are not designated to the installation setting are rewritten to the read values without changing the set values for the items designated to the installation setting. If a password with which the installation setting can be designated and canceled is entered, an installation setting mode is established, whereupon the installation setting for the set items can be designated or canceled. The set values for the items designated to the installation setting cannot be changed. If the set of molding conditions is read from the storage device and set collectively, therefore, the set values are fixed to the original ones without being changed. The set values for the items designated to the installation setting can be changed only if a special password is entered.